SPRAYABLE POWER OF FLUOROPOLYER PARTICLES

The present disclosure relates to a fluoropolymer powder for additive manufacturing of fluoropolymers having an average particle size (d50) in a range from 20 to 100 micrometers, preferably 30 to 70 micrometers, more preferably from 30 to 65 micrometers, most preferably from 30 to 60 micrometers and an average particle size (d90) in a range from 60 to 120 micrometers, and a bulk density of at least 800 g/l and no greater than 2000 g/l when measured according to DIN EN ISO 60:2000-1. Also provided are uses of the powder, processes of making the powders, articles produced by using the powder and processes for additive manufacturing using the powder.

Thermally Conductive Articles Including Entangled or Aligned Fibers, Methods of Making Same, and Battery Modules

The present disclosure provides a thermally conductive article including a pad having first and second opposed major surfaces and a thickness therebetween. The thickness is formed of entangled thermally conductive fibers and at least a portion of the entangled thermally conductive fibers have at least one terminal end at the first opposed major surface, the opposed second major surface, or both. The pad is at least partially impregnated with a polymer. Another thermally conductive article is provided including a) a pad having first and second opposed major surfaces and a thickness therebetween; b) a first thermally conductive skin layer; and c) a second thermally conductive skin layer. The thickness of the pad is formed of aligned thermally conductive fibers, and at least a portion of the thermally conductive fibers have a terminal end at the first opposed major surface and the opposed second major surface. The first and second thermally conductive skin layers each include a polymeric matrix at least partially embedded in the terminal end of at least a portion of the thermally conductive fibers at the first and second major surfaces of the pad, respectively. Methods of making the thermally conductive articles are also provided.

ADDITIVE LAYER MANUFACTURING METHOD AND ARTICLES

An additive layer manufacturing method, preferably using selective laser sintering, for manufacturing a solid article, the method including applying a layer of a powder, the powder including at least one powdered (co)polymer, onto a solid substrate in a processing chamber; fusing the powder layer onto the solid substrate; subsequently depositing successive layers of the powder, wherein each successive layer is selectively fused prior to deposition of the subsequent layer of powder so as to form the article. In some embodiments, the powder further includes abrasive particles having a hardness greater than or equal to that of aluminum oxide.

CONTROL CURE THERMALLY-CONDUCTIVE GAP FILLER MATERIALS

Control cure thermally-conductive gap filler materials are described, as are methods of curing. Also described are curing agents and methods of making curing agents. 1. A control cure thermally-conductive gap filler composition comprising a matrix polymer , a thermally-conductive filler , and a curing agent comprising zinc tosylate deposited onto a particle of zinc oxide.2. The control cure thermally-conductive gap filler composition of claim 1 , wherein the curing agent has a major axis dimension of from 5 to 50 microns.3. The control cure thermally-conductive gap filler composition of claim 1 , comprising an initiator paste that comprises the curing agent and the thermally-conductive filler and a base component that comprises the matrix polymer claim 1 , wherein the concentration of curing agent in the initiator paste is from 0.1 to 5.0 percent by weight based on the total weight of the initiator paste.4. (canceled)5. (canceled)6. The control cure thermally-conductive gap filler composition of claim 1 , comprising an initiator paste that comprises the curing agent and the thermally-conductive filler and a base component that comprises the matrix polymer claim 1 , wherein the concentration of zinc tosylate in the initiator paste is from 0.05 to 2.0 percent by weight based on the total weight of the initiator paste.7. (canceled)8. (canceled)9. The control cure thermally-conductive gap filler composition of claim 1 , wherein the matrix polymer comprises at least one aziridino-functional polyether polymer.12. The control cure thermally-conductive gap filler composition of claim 11 , wherein each R2 is independently selected from the group consisting of linear alkylene groups having 2 to 6 carbon atoms.13. The control cure thermally-conductive gap filler composition of claim 1 , wherein the thermally-conductive gap filler comprises at least 50% by volume of the thermally-conductive filler based on the total volume of the thermally-conductive gap filler.14. (canceled)15 ...

THERMALLY-CONDUCTIVE GAP FILLER

Thermally-conductive gap fillers are described. The gap fillers comprise a matrix polymer, a thermally-conductive filler, and a liquid flame retardant plasticizer. 1. A thermally-conductive gap filler comprising a matrix polymer , a thermally-conductive filler , and a liquid flame retardant plasticizer.2. The thermally-conductive gap filler of claim 1 , wherein the thermally-conductive gap filler comprises at least 50% by volume of the thermally-conductive filler based on the total volume of the thermally-conductive gap filler.3. The thermally-conductive gap filler of claim 1 , wherein the matrix polymer comprises at least one aziridino-functional polyether polymer.6. The thermally-conductive gap filler of claim 4 , wherein each R2 is independently selected from the group consisting of linear alkylene groups having 2 to 6 carbon atoms.7. The thermally-conductive gap filler of claim 1 , wherein the thermally-conductive gap filler comprises at least 65% by volume of the thermally-conductive filler based on the total volume of the thermally-conductive gap filler.8. The thermally-conductive gap filler of claim 1 , wherein the liquid flame retardant plasticizer is a phosphoric acid alkyl ester.9. The thermally-conductive gap filler of claim 8 , wherein the liquid flame retardant plasticizer has the general formula OP(OR1)(OR2)(OR3) claim 8 , wherein each of R1 claim 8 , R2 and R3 is independently selected from a C1-C10 aliphatic group (no aromatic ring) and a C6-C20 aryl group claim 8 , a C7-C30 alkylaryl group claim 8 , and a C7-C30 arylalkyl group.10. The thermally-conductive gap filler of claim 9 , wherein the liquid flame retardant plasticizer is 2-ethylhexyldiphenyl phosphate.11. The thermally-conductive gap filler of claim 1 , having a thermal conductivity of from 1.5 to 10.0 W/mK.12. The thermally-conductive gap filler of claim 11 , having a thermal conductivity of from 2.0 to 7.0 W/mK.13. The thermally-conductive gap filler of claim 1 , having a flame retardancy ...

Additive layer manufacturing method and articles

An additive layer manufacturing method, preferably using selective laser sintering, for manufacturing a solid article, the method including applying a layer of a powder, the powder including at least one powdered (co)polymer, onto a solid substrate in a processing chamber; fusing the powder layer onto the solid substrate; subsequently depositing successive layers of the powder, wherein each successive layer is selectively fused prior to deposition of the subsequent layer of powder so as to form the article. In some embodiments, the powder further includes abrasive particles having a hardness greater than or equal to that of aluminum oxide.

Boron nitride agglomerates, method of production thereof and use thereof

The flake-shaped agglomerates according to the invention are suitable as filler for polymers for making polymer-boron nitride composites and for hot pressing of boron nitride sintered compacts.

CHAIN-EXTENDED SILICONES, METHOD OF MAKING, CURABLE COMPOSITION INCLUDING THE SAME, AND THERMAL GAP FILLER

A chain-extended silicone represented by the formula Each R 1 independently represents H or a C 1 -C 15 hydrocarbyl group. Each R 2 independently represents H or a C 1 -C 6 alkyl group. Each A independently represents a C 1 -C 18 hydrocarbylene group, optionally substituted with up to 5 heteroatoms selected from the group consisting of O, N and S. Each Z independently represents a leaving group displaceable by a primary or secondary alkylamine. Each m independently represents an integer from 5 to 1000, inclusive. n represents an integer greater than or equal to two. The chain-extended silicone can be functionalized with aziridine groups. Methods of making the foregoing are also disclosed. Curable compositions, including a thermal gap filler, including the chain-extended silicone are also disclosed.

CURABLE COMPOSITION COMPRISING POLYAZIRIDINE AND OXIDIZED BORON NITRIDE PARTICLES, METHOD OF CURING THE SAME, AND CURED COMPOSITION

A curable composition comprises oxidized boron nitride particles and a polyaziridine. Each oxidized boron nitride particle comprises a hydrated boron oxide surface layer disposed on a boron nitride core. A method of curing and a cured reaction product are also disclosed.

ACID-CURABLE COMPOSITION

The present disclosure relates to an acid-curable composition, comprising: a) a base component comprising a cationically self-curable oligomeric compound; b) a curing system for the cationically self-curable oligomeric compound, which comprises: i. an ionogenic compound comprising an anion and ammonium as a cation; and ii. water. According to another aspect, the present disclosure is directed to a curing system suitable for an acid-curable composition comprising a cationically self-curable oligomeric compound. According to still another aspect, the present disclosure relates to a method of manufacturing an acid-curable composition. In yet another aspect, the disclosure relates to the use of an acid-curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

ACID-CURABLE COMPOSITION

The present disclosure relates to an acid-curable composition, comprising: a) abase component comprising a cationically self-curable oligomeric compound; and b) a curing system for the cationically self-curable oligomeric compound, which comprises an ionogenic compound comprising an anion and an aminium ion as a cation. According to another aspect, the present disclosure is directed to a curing system suitable for an acid-curable composition comprising a cationically self-curable oligomeric compound. According to still another aspect, the present disclosure relates to a method of manufacturing an acid-curable composition. In yet another aspect, the disclosure relates to the use of an acid-curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

AZIRIDINO-FUNCTIONAL POLYETHER THERMALLY-CONDUCTIVE GAP FILLER

Thermally-conductive gap fillers are described. The gap fillers comprise an aziridino-functional polyether polymer and thermally conductive particles. Initiators suitable for such systems e also described. Such gap fillers may be used in various applications including the manufacture of battery modules and subunits. 1. A thermally-conductive gap filler comprising an aziridino-functional polyether polymer and at least 30% by volume of a thermally-conductive filler based on the total volume of the gap filler.5. The thermally-conductive gap filler of any one of to , wherein R1 is an alkylene group having two carbon atoms.6. The thermally-conductive gap filler according to or , wherein each R2 is independently selected from the group consisting of linear alkylene groups having 2 to 6 carbon atoms.8. The thermally-conductive gap filler according to any one of to , wherein n is selected such that the calculated molecular weight of the at least one polyether polymer is no greater than 10 ,000 grams/mole.9. The thermally-conductive gap filler according to any one of the preceding claims , wherein the gap filler comprises at least 50% by volume of a thermally-conductive filler based on the total volume of the gap filler.10. The thermally-conductive gap filler according to any one of the preceding claims , wherein the thermally conductive filler is selected from the groups consisting of ceramics , metals , graphite , and combinations thereof11. The thermally-conductive gap filler according to any one of the preceding claims , further comprising an initiator.13. The thermally-conductive gap filler according to any one of the preceding claims , further comprising at least one of a plasticizer and a flame retardant.14. The thermally-conductive gap filler according to any one of the preceding claims , comprising a flame retardant selected from the group consisting of an intumescent material , an aluminum hydroxide , and combinations thereof.15. The thermally-conductive gap filler ...

Aziridino-functional polyether thermally-conductive gap filler

Thermally-conductive gap fillers are described. The gap fillers comprise an aziridino-functional polyether polymer and thermally conductive particles. Initiators suitable for such systems ae also described. Such gap fillers may be used in various applications including the manufacture of battery modules and subunits.

PRECURSOR COMPOSITIONS INCLUDING A CURABLE COMPONENT AND SURFACE COATED OR MODIFIED HOLLOW GLASS MICROSPHERES, ARTICLES, ADDITIVE MANUFACTURING METHODS, AND METHODS OF INTERFERING WITH ELECTROMAGNETIC RADIATION

The present disclosure provides compositions, articles, and methods related to altering electromagnetic radiation. An actinic radiation curable precursor composition of a three-dimensional article includes a) a resin comprising an actinic radiation curable component, wherein the resin has a viscosity no greater than 500 cP; b) hollow glass microspheres having a density no greater than 2 g/mL and an average diameter no greater than 200 micrometers; and c) a photoinitiator. At least part of the surface of the hollow glass microspheres comprises a surface coating or modification. An article includes a photo(co)polymerization reaction product of the composition. A method of manufacturing a three-dimensional article includes the steps of a) providing an actinic radiation curable precursor composition; and b) selectively exposing a portion of the composition to a source of actinic radiation to at least partially cure the exposed portion of the composition, thereby forming a cured layer. Steps a) and b) are repeated so as to form a three-dimensional article. A three-dimensional article is provided, obtained according to the method. Methods of interfering with electromagnetic radiation originating from an electromagnetic radiation producing device are provided, including integrating an article into the electronic device or placing an article in the vicinity of the electromagnetic radiation producing device.

Boron nitride agglomerates, method of production thereof and use thereof

The invention relates to boron nitride agglomerates, comprising lamellar, hexagonal boron nitride primary particles, which are agglomerated with one another with a preferred orientation, the agglomerates formed being flake-shaped. The invention also relates to a method for producing said boron nitride agglomerates, characterized in that lamellar, hexagonal boron nitride primary particles are agglomerated in such a way that they line up with one another with a preferred orientation. The flake-shaped agglomerates according to the invention are suitable as filler for polymers for making polymer-boron nitride composites and for hot pressing of boron nitride sintered compacts.

Boron nitride agglomerates, method of production and use thereof

The flake-shaped agglomerates according to the invention are suitable as filler for polymers for making polymer-boron nitride composites and for hot pressing of boron nitride sintered compacts.

Methods of Manufacturing Electromagnetic Radiation Altering Articles, Articles Made by the Methods, Apparatuses, and Methods of Altering Electromagnetic Radiation

The present disclosure provides methods, articles, and apparatuses related to altering electromagnetic radiation. A method of making articles includes a) forming an electromagnetic radiation altering material by providing a polymer matrix and optionally embedding dielectric particles in the polymer matrix and b) obtaining initial dielectric properties of the electromagnetic radiation altering material. The method further includes c) modeling electromagnetic radiation altering features of the material suitable for the article obtained from the material to have target electromagnetic radiation altering properties, thereby obtaining a simulation of the electromagnetic radiation altering article; and d) additive manufacturing the electromagnetic radiation altering article based on the simulation of the electromagnetic radiation altering article. An electromagnetic radiation altering article obtained by the method is also provided. Further, an apparatus is provided including the electromagnetic radiation altering article. Methods of altering electromagnetic radiation are provided, including integrating an electromagnetic radiation altering article into either an electronic device or an electromagnetic radiation producing device, or placing the article in the vicinity of the device. Aspects of the present disclosure advantageously contribute to achieving optimized materials and designs for electromagnetic radiation altering articles.

BORON NITRIDE AGGLOMERATES, METHOD OF PRODUCTION THEREOF AND USE THEREOF

The invention relates to boron nitride agglomerates, comprising lamellar, hexagonal boron nitride primary particles, which are agglomerated with one another with a preferred orientation, the agglomerates formed being flake-shaped. 1. Boron nitride agglomerates , comprising lamellar , hexagonal boron nitride primary particles , which are agglomerated with one another with a preferred orientation , characterized in that the agglomerates formed are flake-shaped.2. Boron nitride agglomerates according to claim 1 , characterized in that the boron nitride primary particles are agglomerated with one another with a preferred orientation in such a way that the planes of the lamellae of the boron nitride primary particles are essentially aligned parallel to one another.3. Boron nitride agglomerates according to claim 1 , characterized in that the texture index measured on the flake-shaped agglomerates is more than 1.5 claim 1 , preferably at least 2.0 claim 1 , more preferably at least 2.8 claim 1 , especially preferably at least 3.5.4. Boron nitride agglomerates according to claim 1 , characterized in that the texture index measured on the flake-shaped agglomerates is 0.7 or less claim 1 , preferably 0.5 or less claim 1 , more preferably 0.35 or less claim 1 , especially preferably 0.3 or less.5. Boron nitride agglomerates according to claim 1 , characterized in that the density of the flake-shaped agglomerates is at least 1.6 g/cm claim 1 , preferably at least 1.8 g/cm claim 1 , especially preferably at least 2.0 g/cm.6. Boron nitride agglomerates according to claim 1 , characterized in that the proportion of forming surface claim 1 , relative to the total surface of the flake-shaped agglomerates claim 1 , is at least 10% claim 1 , preferably at least 20%.7. Boron nitride agglomerates according to claim 1 , characterized in that the thickness of the flake-shaped agglomerates is 10 to 500 μm claim 1 , preferably from 15 to 350 μm claim 1 , especially preferably 30 to 200 μm. ...

Boron Nitride Agglomerates, Method of Production Thereof and Use Thereof

The invention relates to boron nitride agglomerates, comprising lamellar, hexagonal boron nitride primary particles, which are agglomerated with one another with a preferred orientation, the agglomerates formed being flake-shaped. 119-. (canceled)20. Boron nitride agglomerates , comprising: lamellar , hexagonal boron nitride primary particles , the primary particles having an average particle size of 0.5 to 15 μm , in a binder free , flake-shape agglomerate formed with an essentially parallel alignment of the lamellae; the flake-shaped agglomerate having an average size dup to 3 mm; and wherein the proportion of forming surface , relative to the total surface of the flake-shaped agglomerates , is at least 10%. The present invention relates to boron nitride agglomerates, comprising lamellar, hexagonal boron nitride, a method of production thereof and the use of said agglomerates as filler for polymers and for the hot pressing of boron nitride sintered compacts.Hexagonal boron nitride powder can, owing to its good thermal conductivity, be used as filler for polymers in applications simultaneously requiring good electrical insulation capability of the filler used. Furthermore, boron nitride powder is also used as sintering powder for hot pressing, for applications in metallurgy. Moreover, hexagonal boron nitride powder is used in cosmetic preparations, as a lubricant, as a parting compound in metallurgy and as raw material for the production of cubic boron nitride.Hexagonal boron nitride powder is synthesized industrially by nitriding boric acid in the presence of a source of nitrogen. Ammonia can be used as the source of nitrogen, and then usually calcium phosphate is used as the carrier material for the boric acid. An organic source of nitrogen such as melamine or urea can also be reacted under nitrogen with boric acid or borates. Nitriding is usually carried out at temperatures from 800 to 1200° C. The boron nitride then obtained is largely. amorphous, and it is ...

Boron Nitride Agglomerates, Method of Production Thereof and Use Thereof

The invention relates to boron nitride agglomerates, comprising lamellar, hexagonal boron nitride primary particles, which are agglomerated with one another with a preferred orientation, the agglomerates formed being flake-shaped. 119-. (canceled)20. Boron nitride agglomerates , comprising: lamellar , hexagonal boron nitride primary particles , the primary particles having an average particle size of 0.5 to 15 μm , agglomerated in an essentially parallel alignment of the lamellae , wherein the agglomerates formed are flake-shaped and have an average size dup to 3 mm; and wherein the proportion of forming surface , relative to the total surface of the flake-shaped agglomerates , is at least 10%.21. The boron nitride agglomerates according to claim 20 , wherein the average agglomerate size dis up to 1 mm.22. The boron nitride agglomerates according to claim 20 , wherein the texture index measured on the flake-shaped agglomerates is more than 1.5.23. The boron nitride agglomerates according to claim 20 , wherein texture index measured on the flake-shaped agglomerates is 0.7 or less.24. The boron nitride agglomerates according to claim 20 , wherein the density of the flake-shaped agglomerates is at least 1.6 g/cm.25. The boron nitride agglomerates according to claim 20 , wherein the thickness of the flake-shaped agglomerates is 10 to 500 μm.26. The boron nitride agglomerates according to claim 21 , wherein the average agglomerate size dis up to 500 μm.27. The boron nitride agglomerates according to claim 20 , wherein the agglomerates further comprise polymers other particles or combinations thereof selected from the group comprising carbides claim 20 , borides claim 20 , nitrides claim 20 , oxides claim 20 , hydroxides claim 20 , carbon and metals.28. The boron nitride agglomerates according to claim 20 , wherein the agglomerates are surface modified by means of additives selected from the group comprising polymers claim 20 , organometallic compounds claim 20 , silanes ...

THERMAL INTERFACE MATERIAL

Low Volatile Organic Content (VOC) thermal interface materials are described. The thermal interface materials include heat conducting fillers such a hexagonal boron nitride dispersed in a block copolymer resin system. Depending on the requirements, tackifiers and plasticizers may be included in the resin system while still retaining low VOC levels. 2. The thermal interface material of claim 1 , wherein the block copolymer is selected from the group consisting of a styrene-isoprene-styrene block copolymer claim 1 , an olefin block copolymer claim 1 , and combinations thereof.3. The thermal interface material of claim 2 , wherein the block copolymer comprises a styrene-isoprene-styrene block copolymer.4. The thermal interface material of claim 3 , wherein the styrene-isoprene-styrene block copolymer comprises a star block copolymer.58-. (canceled)9. The thermal interface material according to claim 1 , wherein the thermally conductive filler comprises hexagonal boron nitride.10. The thermal interface material according to claim 1 , comprising at least 60 percent by weight of the thermally conductive filler based on the total weight of the thermally conductive filler and the resin system.11. The thermal interface material according to claim 1 , comprising at least 5 percent by weight of hexagonal boron nitride thermally conductive filler based on the total weight of the thermally conductive filler and the resin system.12. The thermal interface material according to claim 1 , wherein the thermal interface material has a Volatile Organic Compound content of no greater than 200 ppm as measured according to the Thermal Desorption Procedure. The present disclosure relates to thermal interface materials. Generally, the thermal interface materials are based on heat conducting fillers dispersed in a block copolymer resin system. Depending on the requirements, tackifiers and plasticizers may be included in the resin system. The resulting compositions have low volatile organic ...

Aziridino-functional polyether thermally-conductive gap filler

Thermally-conductive gap fillers are described. The gap fillers comprise an aziridino-functional polyether polymer and thermally conductive particles. Initiators suitable for such systems ae also described. Such gap fillers may be used in various applications including the manufacture of battery modules and subunits.

Thermally-conductive gap filler

Thermally-conductive gap fillers are described. The gap fillers comprise a matrix polymer, a thermally-conductive filler, and a liquid flame retardant plasticizer.

Curable composition comprising polyaziridine and oxidized boron nitride particles, method of curing the same, and cured composition

A curable composition comprises oxidized boron nitride particles and a polyaziridine. Each oxidized boron nitride particle comprises a hydrated boron oxide surface layer disposed on a boron nitride core. A method of curing and a cured reaction product are also disclosed.

Acid-curable composition

The present disclosure relates to an acid-curable composition, comprising: a) a base component comprising a cationically self-curable oligomeric compound; and b) a curing system for the cationically self-curable oligomeric compound, which comprises an ionogenic compound comprising an anion and an aminium ion as a cation. According to another aspect, the present disclosure is directed to a curing system suitable for an acid-curable composition comprising a cationically self-curable oligomeric compound. According to still another aspect, the present disclosure relates to a method of manufacturing an acid-curable composition. In yet another aspect, the disclosure relates to the use of an acid-curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

Acid-curable composition

The present disclosure relates to an acid-curable composition, comprising: a) a base component comprising a cationically self-curable oligomeric compound; b) a curing system for the cationically self-curable oligomeric compound, which comprises: i. an ionogenic compound comprising an anion and ammonium as a cation; and ii. water. According to another aspect, the present disclosure is directed to a curing system suitable for an acid-curable composition comprising a cationically self-curable oligomeric compound. According to still another aspect, the present disclosure relates to a method of manufacturing an acid-curable composition. In yet another aspect, the disclosure relates to the use of an acid-curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

Thermally-conductive curable composition

The present disclosure relates to a thermally-conductive curable composition comprising: a) a base component comprising a cationically self-curable silicone-based oligomeric compound; b) a curing system for the cationically self-curable silicone-based oligomeric compound; and c) a thermally-conductive filler. According to another aspect, the present disclosure is directed to a method of manufacturing a thermally-conductive curable composition. In yet another aspect, the disclosure relates to the use of a thermally-conductive curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

Thermally-conductive curable composition

The present disclosure relates to a curable composition comprising: a) a base component comprising a cationically self-curable silicone-based oligomeric compound; b) a curing system for the cationically self-curable silicone-based oligomeric compound; and c) a thermally-conductive filler. According to another aspect, the present disclosure is directed to method of manufacturing a curable composition. In yet another aspect, the disclosure relates to the use of a thermally-conductive curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

Chain–extended silicones, method of making, curable composition including the same, and thermal gap filler

A chain–extended silicone represented by the formula Each R 1 independently represents H or a C 1 –C 15 hydrocarbyl group. Each R 2 independently represents H or a C 1 –C 6 alkyl group. Each A independently represents a C 1 –C 18 hydrocarbylene group, optionally substituted with up to 5 heteroatoms selected from the group consisting of O, N and S. Each Z independently represents a leaving group displaceable by a primary or secondary alkylamine. Each m independently represents an integer from 5 to 1000, inclusive. n represents an integer greater than or equal to two. The chain-extended silicone can be functionalized with aziridine groups. Methods of making the foregoing are also disclosed. Curable compositions, including a thermal gap filler, including the chain-extended silicone are also disclosed.

Thermally conductive articles including entangled or aligned fibers, methods of making same, and battery modules

The present disclosure provides a thermally conductive article including a pad having first and second opposed major surfaces and a thickness therebetween. The thickness is formed of entangled thermally conductive fibers and at least a portion of the entangled thermally conductive fibers have at least one terminal end at the first opposed major surface, the opposed second major surface, or both. The pad is at least partially impregnated with a polymer. Another thermally conductive article is provided including a) a pad having first and second opposed major surfaces and a thickness therebetween; b) a first thermally conductive skin layer; and c) a second thermally conductive skin layer. The thickness of the pad is formed of aligned thermally conductive fibers, and at least a portion of the thermally conductive fibers have a terminal end at the first opposed major surface and the opposed second major surface. The first and second thermally conductive skin layers each include a polymeric matrix at least partially embedded in the terminal end of at least a portion of the thermally conductive fibers at the first and second major surfaces of the pad, respectively. Methods of making the thermally conductive articles are also provided.

Boron nitride agglomerates, process for their preparation and their use

Gegenstand der Erfindung sind Bornitrid-Agglomerate, umfassend plättchenförmige, hexagonale Bornitrid-Primärpartikel, die miteinander mit einer Vorzugsorientierung agglomeriert sind, wobei die Agglomerate schuppenförmig ausgebildet sind. Gegenstand der Erfindung ist ebenfalls ein Verfahren zur Herstellung von solchen Bornitrid-Agglomeraten, wobei plättchenförmige, hexagonale Bornitrid-Primärpartikel in der Weise agglomeriert werden, dass sie sich zueinander mit einer Vorzugsorientierung ausrichten. Die erfindungsgemäßen schuppenförmigen Agglomerate eignen sich als Füllstoff für Polymere zur Herstellung von Polymer-Bornitrid-Verbundwerkstoffen sowie zum Heißpressen von Bornitrid-Sinterkörpern. The invention relates to boron nitride agglomerates comprising platelet-shaped, hexagonal boron nitride primary particles which are agglomerated with one another with a preferred orientation, the agglomerates being in the form of scales. The invention also relates to a method for producing such boron nitride agglomerates, platelet-shaped, hexagonal boron nitride primary particles being agglomerated in such a way that they align with one another with a preferred orientation. The scale-like agglomerates according to the invention are suitable as a filler for polymers for the production of polymer-boron nitride composites and for the hot pressing of boron nitride sintered bodies.

Thermally-conductive curable composition

The present disclosure relates to a curable composition comprising: a) a base component comprising a cationically self-curable silicone-based oligomeric compound; b) a curing system for the cationically self-curable silicone-based oligomeric compound; and c) a thermally-conductive filler. According to another aspect, the present disclosure is directed to method of manufacturing a curable composition. In yet another aspect, the disclosure relates to the use of a thermally-conductive curable composition for industrial applications, in particular for thermal management applications in the automotive industry.

Precursor compositions including a curable component and surface coated or modified hollow glass microspheres, articles, additive manufacturing methods, and methods of interfering with electromagnetic radiation

The present disclosure provides compositions, articles, and methods related to altering electromagnetic radiation. An actinic radiation curable precursor composition of a three-dimensional article includes a) a resin comprising an actinic radiation curable component, wherein the resin has a viscosity no greater than 500 cP; b) hollow glass microspheres having a density no greater than 2 g/mL and an average diameter no greater than 200 micrometers; and c) a photoinitiator. At least part of the surface of the hollow glass microspheres comprises a surface coating or modification. An article includes a photo(co)polymerization reaction product of the composition. A method of manufacturing a three-dimensional article includes the steps of a) providing an actinic radiation curable precursor composition; and b) selectively exposing a portion of the composition to a source of actinic radiation to at least partially cure the exposed portion of the composition, thereby forming a cured layer. Steps a) and b) are repeated so as to form a three-dimensional article. A three-dimensional article is provided, obtained according to the method. Methods of interfering with electromagnetic radiation originating from an electromagnetic radiation producing device are provided, including integrating an article into the electronic device or placing an article in the vicinity of the electromagnetic radiation producing device.

Precursor compositions including a curable component and surface coated or modified hollow glass microspheres, articles, additive manufacturing methods, and methods of interfering with electromagnetic radiation

The present disclosure provides compositions, articles, and methods related to altering electromagnetic radiation. An actinic radiation curable precursor composition of a three-dimensional article includes a) a resin comprising an actinic radiation curable component, wherein the resin has a viscosity no greater than 500 cP; b) hollow glass microspheres having a density no greater than 2 g/mL and an average diameter no greater than 200 micrometers; and c) a photoinitiator. At least part of the surface of the hollow glass microspheres comprises a surface coating or modification. An article includes a photo(co)polymerization reaction product of the composition. A method of manufacturing a three-dimensional article includes the steps of a) providing an actinic radiation curable precursor composition; and b) selectively exposing a portion of the composition to a source of actinic radiation to at least partially cure the exposed portion of the composition, thereby forming a cured layer. Steps a) and b) are repeated so as to form a three-dimensional article. A three-dimensional article is provided, obtained according to the method. Methods of interfering with electromagnetic radiation originating from an electromagnetic radiation producing device are provided, including integrating an article into the electronic device or placing an article in the vicinity of the electromagnetic radiation producing device.

Curable composition comprising polyaziridine and oxidized boron nitride particles, method of curing the same, and cured composition

A curable composition comprises oxidized boron nitride particles and a polyaziridine. Each oxidized boron nitride particle comprises a hydrated boron oxide surface layer disposed on a boron nitride core. A method of curing and a cured reaction product are also disclosed.

Gesinterte, polykristalline mischwerkstoffe auf basis von bornitrid und zirkoniumdioxid, verfahren zu deren herstellung und deren verwendung

Chain-extended silicones, method of making, curable composition including the same, and thermal gap filler

A chain–extended silicone represented by the formula Each R 1 independently represents H or a C 1 –C 15 hydrocarbyl group. Each R 2 independently represents H or a C 1 –C 6 alkyl group. Each A independently represents a C 1 –C 18 hydrocarbylene group, optionally substituted with up to 5 heteroatoms selected from the group consisting of O, N and S. Each Z independently represents a leaving group displaceable by a primary or secondary alkylamine. Each m independently represents an integer from 5 to 1000, inclusive. n represents an integer greater than or equal to two. The chain-extended silicone can be functionalized with aziridine groups. Methods of making the foregoing are also disclosed. Curable compositions, including a thermal gap filler, including the chain-extended silicone are also disclosed.

Thermally conductive articles including entangled or aligned fibers, methods of making same, and battery modules

Additive layer manufacturing method and articles

An additive layer manufacturing method, preferably using selective laser sintering, for manufacturing a solid article, the method including applying a layer of a powder, the powder including at least one powdered (co)polymer, onto a solid substrate in a processing chamber; fusing the powder layer onto the solid substrate; subsequently depositing successive layers of the powder, wherein each successive layer is selectively fused prior to deposition of the subsequent layer of powder so as to form the article. In some embodiments, the powder further includes abrasive particles having a hardness greater than or equal to that of aluminum oxide.

Gesinterte, polykristalline Mischwerkstoffe auf Basis von Bornitrid und Zirkoniumdioxid, Verfahren zu deren Herstellung und deren Verwendung

Methods of manufacturing electromagnetic radiation altering articles, articles made by the methods, apparatuses, and methods of altering electromagnetic radiation

The present disclosure provides methods, articles, and apparatuses related to altering electromagnetic radiation. A method of making articles includes a) forming an electromagnetic radiation altering material by providing a polymer matrix and optionally embedding dielectric particles in the polymer matrix and b) obtaining initial dielectric properties of the electromagnetic radiation altering material. The method further includes c) modeling electromagnetic radiation altering features of the material suitable for the article obtained from the material to have target electromagnetic radiation altering properties, thereby obtaining a simulation of the electromagnetic radiation altering article; and d) additive manufacturing the electromagnetic radiation altering article based on the simulation of the electromagnetic radiation altering article. An electromagnetic radiation altering article obtained by the method is also provided. Further, an apparatus is provided including the electromagnetic radiation altering article. Methods of altering electromagnetic radiation are provided, including integrating an electromagnetic radiation altering article into either an electronic device or an electromagnetic radiation producing device, or placing the article in the vicinity of the device. Aspects of the present disclosure advantageously contribute to achieving optimized materials and designs for electromagnetic radiation altering articles.

Shell structures for thermal interface materials

The present invention relates to a thermally conductive structure comprising a first and a second element, a shell structure between the first element and the second element, wherein the shell structure, the first element and the second element define an enclosed space, and a thermal interface material comprised in the enclosed space.

Adhesive sheet, cured foam and electric motor

An adhesive sheet is provided having an expandable adhesive layer having a foaming agent and excellent thermal conductivity after foaming curing. The adhesive sheet comprises a substrate, a first adhesive layer disposed on one surface of the substrate, and a second adhesive layer disposed on the other side of the substrate. The first adhesive layer comprises an adhesive (A), a thermally conductive filler (B) having a mean short side length of 1 μm or more, and a foaming agent (C). The thermally conductive filler (B) has an aspect ratio of 1.3 or more and includes a filler (B-1). The second adhesive layer contains an adhesive (A'), a thermally conductive filler (B') having a mean short side length of 1 μm or more, and a foaming agent (C'). The thermally conductive filler (B') comprises a filler (B'-1) having an aspect ratio of 1.3 or more.

Composition including particles and two liquid phases and related process

A curable composition includes 25 to 70 volume percent particles, 25 to 74.8 volume percent of a primary liquid phase, and 0.15 to 20 volume percent of a secondary liquid phase, based on the total volume of the curable composition. The primary liquid phase includes a first monomer containing at least one of n-butyl acrylate, an alkyl acrylate monomer, or an alkyl methacrylate monomer, wherein alkyl is linear or branched and has at least five carbon atoms. The secondary liquid phase and the primary liquid phase form separate phases after mixing within a temperature range of from -20°C to 30°C, and the particles are insoluble in the primary liquid phase and in the secondary liquid phase within a temperature range of from -20°C to 30°C. A pressure-sensitive adhesive precursor capillary suspension, a pressure- sensitive adhesive made from a capillary suspension, and a process for making a pressure-sensitive adhesive are also described.

Aziridino-functional polyether thermally-conductive gap filler

Thermally conductive articles including entangled or aligned fibers, methods of making same, and battery modules

The present disclosure provides a thermally conductive article including a pad having first and second opposed major surfaces and a thickness therebetween. The thickness is formed of entangled thermally conductive fibers and at least a portion of the entangled thermally conductive fibers have at least one terminal end at the first opposed major surface, the opposed second major surface, or both. The pad is at least partially impregnated with a polymer. Another thermally conductive article is provided including a) a pad having first and second opposed major surfaces and a thickness therebetween; b) a first thermally conductive skin layer; and c) a second thermally conductive skin layer. The thickness of the pad is formed of aligned thermally conductive fibers, and at least a portion of the thermally conductive fibers have a terminal end at the first opposed major surface and the opposed second major surface. The first and second thermally conductive skin layers each include a polymeric matrix at least partially embedded in the terminal end of at least a portion of the thermally conductive fibers at the first and second major surfaces of the pad, respectively. Methods of making the thermally conductive articles are also provided.

Curable composition comprising polyaziridine and oxidized boron nitride particles, method of curing the same, and cured composition

Curable composition comprising polyaziridine and oxidized boron nitride particles, method of curing the same, and cured composition

A curable composition comprises oxidized boron nitride particles and a polyaziridine. Each oxidized boron nitride particle comprises a hydrated boron oxide surface layer disposed on a boron nitride core. A method of curing and a cured reaction product are also disclosed.

Methods of Manufacturing Electromagnetic Radiation Altering Articles, Articles Made by the Methods, Apparatuses, and Methods of Altering Electromagnetic Radiation

The present disclosure provides methods, articles, and apparatuses related to altering electromagnetic radiation. A method of making articles includes a) forming an electromagnetic radiation altering material by providing a polymer matrix and optionally embedding dielectric particles in the polymer matrix and b) obtaining initial dielectric properties of the electromagnetic radiation altering material. The method further includes c) modeling electromagnetic radiation altering features of the material suitable for the article obtained from the material to have target electromagnetic radiation altering properties, thereby obtaining a simulation of the electromagnetic radiation altering article; and d) additive manufacturing the electromagnetic radiation altering article based on the simulation of the electromagnetic radiation altering article. An electromagnetic radiation altering article obtained by the method is also provided. Further, an apparatus is provided including the electromagnetic radiation altering article. Methods of altering electromagnetic radiation are provided, including integrating an electromagnetic radiation altering article into either an electronic device or an electromagnetic radiation producing device, or placing the article in the vicinity of the device. Aspects of the present disclosure advantageously contribute to achieving optimized materials and designs for electromagnetic radiation altering articles.

Curable liquid/liquid/solid multiphasic suspensions

The present invention relates to curable compositions comprising a plurality of particles, a primary liquid phase comprising at least one polymerizable or cross-linkable organic compound that can form organic polymers or networks, and a secondary liquid phase.

Seitenplatte für das dünnbandgiessen von stahl

Die Erfindung betrifft Seitenplatten für das Dünnbandgießen von Stahl, umfassend entweder einen Mehrschichtaufbau aus Schichten unterschiedlicher Härte oder einen Einschichtaufbau, bei dem die seitlichen Ränder der Seitenplatte, die als Kontaktfläche zwischen der Seitenplatte und den Rollen der Dünnbandgießanlage dienen, reduziert sind.

Thermally conductive articles including entangled or aligned fibers, methods of making same, and battery modules

The present disclosure provides a thermally conductive article including a pad having first and second opposed major surfaces and a thickness therebetween. The thickness is formed of entangled thermally conductive fibers and at least a portion of the entangled thermally conductive fibers have at least one terminal end at the first opposed major surface, the opposed second major surface, or both. The pad is at least partially impregnated with a polymer. Another thermally conductive article is provided including a) a pad having first and second opposed major surfaces and a thickness therebetween; b) a first thermally conductive skin layer; and c) a second thermally conductive skin layer. The thickness of the pad is formed of aligned thermally conductive fibers, and at least a portion of the thermally conductive fibers have a terminal end at the first opposed major surface and the opposed second major surface. The first and second thermally conductive skin layers each include a polymeric matrix at least partially embedded in the terminal end of at least a portion of the thermally conductive fibers at the first and second major surfaces of the pad, respectively. Methods of making the thermally conductive articles are also provided.