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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 22. Отображено 21.
24-02-2022 дата публикации

Copoly(urethane carbonates) with tunable properties and methods for making and using the same

Номер: US20220056211A1
Автор: Bryce L. Horvath, Christopher J. Wohl, Nasef A. Junaid, Sidney Eichelberger
Принадлежит: National Aeronautics and Space Administration NASA

Described herein are copoly(carbonate urethanes) with tunable properties. The copoly(carbonate urethanes) are produced from the reaction between an aryl diamine and an oligomer. By varying the molecular weight of the oligomer, the mechanical and thermal properties of the copoly(carbonate urethanes) can be modified (i.e., tuned). The copoly(carbonate urethanes) can be used to produce filaments for 3D printing applications that could have tunable properties for a variety of applications.

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Номер записи: 1
12-03-2020 дата публикации

Durable Contamination Resistant Coatings

Номер: US20200079897A1
Автор: Balderson Lilly Lynn, Beck Devon, JR. Joseph G., Lin Yi, Smith, Wohl Christopher J.
Принадлежит:

In an illustrative example, one or more coating formulations may be used and may have characteristics useful in different situations. During evaluations, a plurality of coating formulations comprising epoxy resins and diamine hardeners were prepared and evaluated with regards to impact ice adhesion strength and durability. Alone, such coating formulations provided a significantly reduced impact ice adhesion strength as compared to uncoated aluminum and/or stainless steel surfaces. However, a durability of the coatings, when applied to aluminum or stainless steel surfaces, was insufficient to be considered for use on external aircraft surfaces. By including nano-sized and/or micro-sized particles as additives to the coating formulations, resulted in improved durability without significantly reducing ice adhesion performance of the resin base. 1. An epoxy resin comprising a diamine , a bisphenol-A based epoxy , and an additive , wherein the additive improves an abrasion resistance of the epoxy resin by at least 40 percent.2. The epoxy resin of claim 1 , wherein the additive comprises at least 35 percent of a diglycidyl ether.3. The epoxy resin of claim 1 , further comprising a diglycidyl claim 1 , wherein the diamine comprises 1 claim 1 ,3-Bis(4-aminophenoxy)benzene and the diglycidyl comprises Poly(ethylene glycol) diglycidyl ether.4. The epoxy resin of claim 1 , further comprising an additive causing a reduction in a wear index of at least 50 percent as compared to the epoxy resin alone.5. The epoxy resin of claim 1 , further comprising an additive causing a reduction in a wear index of at least 50 percent as compared to the epoxy resin alone claim 1 , wherein the additive comprises holey graphene.6. The epoxy resin of claim 1 , further comprising an additive causing a reduction in a wear index of at least 50 percent as compared to the epoxy resin alone claim 1 , wherein the additive comprises core-shell rubber particles.7. The epoxy resin of claim 1 , further ...

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Номер записи: 2
01-10-2020 дата публикации

Recycle Feedstocks for On-Demand Article Manufacturing

Номер: US20200308365A1
Автор: Applin Samantha I., Horvath Bryce L., Schniepp Hannes, Wohl Christopher J.
Принадлежит:

A method of recycling a polymer structure includes converting a first polymer structure into feedstock. The first polymer structure comprises particles that are bonded to one another by chemical click bonds to form a first shape. The first polymer structure is converted into feedstock particles by breaking the click bonds. The feedstock particles are formed into a second shape, and the feedstock particles are chemically click-bonded together to form a second polymer structure having a second shape. Breaking the click bonds may include heating the particles. The structures may be formed by causing first particles having dienes to chemically bond to dienophiles of second particles. 1. A method of recycling a polymer structure , the method comprising:converting a first polymer structure comprising particles that are bonded to one another by chemical click bonds to form a first shape into feedstock particles by breaking the click bonds;forming the feedstock particles into a second shape;chemically click bonding the feedstock particles together to form a second polymer structure having a second shape.2. The method of claim 1 , wherein:breaking the click bonds includes heating the particles.3. The method of claim 1 , including:forming the first structure by causing first particles having dienes to chemically bond to dienophiles of second particles.4. The method of claim 3 , including:forming epoxy particles having surfaces;chemically bonding first polymers comprising dienes to the surfaces of the epoxy particles to form the first particles;chemically bonding second polymers comprising dienophiles to the surfaces of epoxy particles to form the second particles.5. The method of claim 4 , wherein:the first and second polymers are formed from monomeric species compatible with chemically interacting with amine species on the epoxy particle surface such that the polymer is chemically bound.6. The method of claim 5 , wherein:the polymers are synthesized in solution with the ...

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Номер записи: 3
03-12-2015 дата публикации

Fluorinated Alkyl Ether Epoxy Resin Compositions and Applications Thereof

Номер: US20150344748A1
Автор: Connell John W., GARDNER John M., Palmieri Frank M., Siochi Emilie J., Smith Joseph G., Wohl Christopher J.
Принадлежит:

Epoxy resin compositions prepared using amino terminated fluoro alkyl ethers. The epoxy resin compositions exhibit low surface adhesion properties making them useful as coatings, paints, moldings, adhesives, and fiber reinforced composites. 1. An epoxy composition comprising a reaction product of:(i) at least one epoxy resin including at least one glycidyl, alicyclic epoxy, oxirane, or ethoxyline group; and(ii) at least one amino terminated fluorinated alkyl ether oligomer or polymer including at least one amine which reacts with the epoxy resin and at least one fluorinated pendant group which migrates to the surface of the epoxy composition.2. The composition of claim 1 , wherein the at least one amino terminated fluorinated alkyl ether oligomer or polymer is represented by formula (I):{'br': None, 'sub': y', '2', '2', 'm', 'y, 'sup': 1', '2', '3', '1, '(E)R—C(O)—O—[CHCRR—CH—O]—C(O)—R(E)\u2003\u2003(I)'} [{'sub': '2', 'E comprises —NH;'}, 'y is 1;', {'sup': '1', 'Ris an aliphatic or aromatic hydrocarbon moiety of 1 to 10 carbon atoms;'}, {'sup': '2', 'Ris —H, —F, or an alkyl of 1 to 6 carbon atoms;'}, {'sup': 3', '4', '5', '4', '4', '4', '5, 'sub': (n-a)', 'a', '(n-a)', 'a', '(n-a)', 'a, 'Ris —F, —RHF, —R—O—RHF, or —O—RHF, wherein Ris an alkyl or ether moiety of 1 to 30 carbons, Ris an alkyl moiety of 1 to 30 carbons, a is an integer of 3 to n, and n is twice the number of carbon atoms in the alkyl moiety plus 1; and'}, 'm is from 4 to 500., 'wherein3. The composition of claim 2 , wherein Ris a divalent phenyl group; Ris alkyl of 1 to 3 carbon atoms; Ris —R—O—RHF claim 2 , the omega carbon of Rhas three fluoride substituents; Ris —Cl—O—C(X)—CF claim 2 , wherein X is —H or —F; and m is between about 6 and 100.4. The composition of claim 1 , wherein the at least one amino terminated fluorinated alkyl ether oligomer or polymer is an oligomer represented by formula (II):{'br': None, 'sub': y', 'm', 'y, 'sup': 1', '1, '(E)R—C(O)—O-[Q]-C(O)—R(E)\u2003\u2003(II)'} [{'sub ...

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Номер записи: 4
26-01-2021 дата публикации

Hydrogen-bonding surfaces for ice mitigation

Номер: US10899937B2
Автор: Christopher J. Wohl, JR., Joseph G. Smith, Jr.
Принадлежит: National Aeronautics and Space Administration NASA

Various embodiments provide ice mitigating surface coatings and methods for applying ice mitigating surface coatings. Various embodiment ice mitigating surface coatings may be formed by hydrolysis of one or more substituted n-alkyldimethylalkoxysilanes terminated with functionalities having the following characteristics with respect to water: 1) non-polar interactions; 2) hydrogen bonding through donor and acceptor interactions; or 3) hydrogen bonding through acceptor interactions only. The substituted n-alkyldimethylalkoxysilanes of the various embodiments may include methyl terminated species, hydroxyl terminated species, ethylene glycol terminated species, and methoxyethylene glycol terminated species. Various embodiment ice mitigating surface coatings may be applied to metal surfaces, such as aluminum surfaces. Various embodiment substituted n-alkyldimethylalkoxysilanes may have an aliphatic chain that is saturated and liner or branched or that is partially unsaturated and liner or branched.

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Номер записи: 5
14-04-2011 дата публикации

Modification of Surface Energy Via Direct Laser Ablative Surface Patterning

Номер: US20110086204A1
Автор: Christopher J. Wohl, JR., John W. Connell, John W. Hopkins, Marcus A. Belcher
Принадлежит: National Aeronautics and Space Administration NASA

Surface energy of a substrate is changed without the need for any template, mask, or additional coating medium applied to the substrate. At least one beam of energy directly ablates a substrate surface to form a predefined topographical pattern at the surface. Each beam of energy has a width of approximately 25 micrometers and an energy of approximately 1-500 microJoules. Features in the topographical pattern have a width of approximately 1-500 micrometers and a height of approximately 1.4-100 micrometers.

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Номер записи: 6
02-06-2020 дата публикации

Dye doped polymer microparticles

Номер: US10669360B2
Автор: Christopher J. Wohl, JR., Jason E. Danley, Pacita I. Tiemsin, Paul M. Danehy
Принадлежит: National Aeronautics and Space Administration NASA

Various embodiments provide dye-doped polystyrene microspheres generated using dispersion polymerization. Polystyrene microspheres may be doped with fluorescent dyes, such as xanthene derivatives including Kiton Red 620 (KR620), using dispersion polymerization. Certain functionalities, such as sodium styrene sulfonate, may be used to shift the equilibrium distribution of dye molecules to favor incorporation of the dye into the particles. Polyelectrolyte materials, such as poly(diallyldimethyl ammnonium chloride), PolyDADMAC, may be used to electrostatically trap and bind dye molecules within the particles. A buffer may be used to stabilize the pH change of the solution during dye-doped polystyrene microsphere generation and the buffer may be selected depending on the pKa of the dye being incorporated. The various embodiments may provide dye-doped polystyrene microspheres, such as KR620-doped polystyrene microspheres that are non-toxic and non-carcinogenic. These non-toxic and non-carcinogenic dye-doped polystyrene microspheres may be suitable for use in wind tunnel testing.

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Номер записи: 7
04-02-2020 дата публикации

Off-set resin formulations and blocking/deblocking resin systems for use as a “co-cure-ply” in the fabrication of large-scale composite structure

Номер: US10549516B2
Автор: Christopher J. Wohl, JR., Frank L. Palmieri, John W. Connell
Принадлежит: National Aeronautics and Space Administration NASA

A method for bonding composite substrates includes coupling a first co-cure prepreg layer having a first off-set amine to epoxide molar ratio onto a surface of a first composite substrate and coupling a second co-cure prepreg layer having a second off-set amine to epoxide molar ratio onto a surface of a second composite substrate. The first and second composite substrates are cured to the first and second co-cure prepreg layers, respectively, using a first cure cycle (including B-stage and cure temperatures) to form a first and a second co-cure prepreg layer portion. The method further includes coupling the first co-cure prepreg layer portion to the second co-cure prepreg layer portion and applying a second cure cycle to cure the first co-cure prepreg layer portion of the first composite substrate to the second co-cure prepreg layer portion of the second composite substrate to form a monolithic covalently bonded composite structure.

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Номер записи: 8
21-11-2023 дата публикации

Copoly(urethane carbonates) with tunable properties and methods for making and using the same

Номер: US11820866B2
Автор: Bryce L. Horvath, Christopher J. Wohl, Nasef A. Junaid, Sidney Eichelberger
Принадлежит: National Aeronautics and Space Administration NASA

Described herein are copoly(carbonate urethanes) with tunable properties. The copoly(carbonate urethanes) are produced from the reaction between an aryl diamine and an oligomer. By varying the molecular weight of the oligomer, the mechanical and thermal properties of the copoly(carbonate urethanes) can be modified (i.e., tuned). The copoly(carbonate urethanes) can be used to produce filaments for 3D printing applications that could have tunable properties for a variety of applications.

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Номер записи: 9
19-09-2023 дата публикации

Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor

Номер: US11760738B2
Автор: Christopher J. Wohl, JR., Emilie J. Siochi, John W. Connell, Joseph G. Smith, Jr.
Принадлежит: National Aeronautics and Space Administration NASA

Copoly(imide oxetane) materials are disclosed that can exhibit a low surface energy while possessing the mechanical, thermal, chemical and optical properties associated with polyimides. The copoly(imide oxetane)s are prepared using a minor amount of fluorinated oxetane-derived oligomer with sufficient fluorine-containing segments of the copoly(imide oxetane)s migrate to the exterior surface of the polymeric material to yield low surface energies. Thus the coatings and articles of manufacture made with the copoly(imide oxetane)s of this invention are characterized as having an anisotropic fluorine composition. The low surface energies can be achieved with very low content of fluorinated oxetane-derived oligomer. The copolymers of this invention can enhance the viability of polyimides for many applications and may be acceptable where homopolyimide materials have been unacceptable.

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Номер записи: 10
05-09-2023 дата публикации

Durable contamination resistant coatings

Номер: US11746183B2
Автор: Christopher J. Wohl, Devon Beck, Joseph G. Smith, Jr., Lilly Lynn Balderson, Yi Lin
Принадлежит: National Aeronautics and Space Administration NASA

In an illustrative example, one or more coating formulations may be used and may have characteristics useful in different situations. During evaluations, a plurality of coating formulations comprising epoxy resins and diamine hardeners were prepared and evaluated with regards to impact ice adhesion strength and durability. Alone, such coating formulations provided a significantly reduced impact ice adhesion strength as compared to uncoated aluminum and/or stainless steel surfaces. However, a durability of the coatings, when applied to aluminum or stainless steel surfaces, was insufficient to be considered for use on external aircraft surfaces. By including nano-sized and/or micro-sized particles as additives to the coating formulations, resulted in improved durability without significantly reducing ice adhesion performance of the resin base.

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Номер записи: 11
06-08-2020 дата публикации

Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor

Номер: US20200247770A1
Автор: Christopher J. Wohl, JR., Emilie J. Siochi, John W. Connell, Joseph G. Smith, Jr.
Принадлежит: National Aeronautics and Space Administration NASA

Copoly(imide oxetane) materials are disclosed that can exhibit a low surface energy while possessing the mechanical, thermal, chemical and optical properties associated with polyimides. The copoly(imide oxetane)s are prepared using a minor amount of fluorinated oxetane-derived oligomer with sufficient fluorine-containing segments of the copoly(imide oxetane)s migrate to the exterior surface of the polymeric material to yield low surface energies. Thus the coatings and articles of manufacture made with the copoly(imide oxetane)s of this invention are characterized as having an anisotropic fluorine composition. The low surface energies can be achieved with very low content of fluorinated oxetane-derived oligomer. The copolymers of this invention can enhance the viability of polyimides for many applications and may be acceptable where homopolyimide materials have been unacceptable.

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Номер записи: 12
03-05-2018 дата публикации

Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor

Номер: US20180118702A1
Автор: Christopher J. Wohl, JR., Emilie J. Siochi, John W. Connell, Joseph G. Smith, Jr.
Принадлежит: National Aeronautics and Space Administration NASA

Copoly(imide oxetane) materials are disclosed that can exhibit a low surface energy while possessing the mechanical, thermal, chemical and optical properties associated with polyimides. The copoly(imide oxetane)s are prepared using a minor amount of fluorinated oxetane-derived oligomer with sufficient fluorine-containing segments of the copoly(imide oxetane)s migrate to the exterior surface of the polymeric material to yield low surface energies. Thus the coatings and articles of manufacture made with the copoly(imide oxetane)s of this invention are characterized as having an anisotropic fluorine composition. The low surface energies can be achieved with very low content of fluorinated oxetane-derived oligomer. The copolymers of this invention can enhance the viability of polyimides for many applications and may be acceptable where homopolyimide materials have been unacceptable.

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Номер записи: 13
20-01-2022 дата публикации

Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor

Номер: US20220017479A1
Автор: Christopher J. Wohl, JR., Emilie J. Siochi, John W. Connell, Joseph G. Smith, Jr.
Принадлежит: National Aeronautics and Space Administration NASA

Copoly(imide oxetane) materials are disclosed that can exhibit a low surface energy while possessing the mechanical, thermal, chemical and optical properties associated with polyimides. The copoly(imide oxetane)s are prepared using a minor amount of fluorinated oxetane-derived oligomer with sufficient fluorine-containing segments of the copoly(imide oxetane)s migrate to the exterior surface of the polymeric material to yield low surface energies. Thus the coatings and articles of manufacture made with the copoly(imide oxetane)s of this invention are characterized as having an anisotropic fluorine composition. The low surface energies can be achieved with very low content of fluorinated oxetane-derived oligomer. The copolymers of this invention can enhance the viability of polyimides for many applications and may be acceptable where homopolyimide materials have been unacceptable.

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Номер записи: 14
23-03-2017 дата публикации

Blocking/Deblocking Resin Systems for Use as a "Co-Cure-Ply" in the Fabrication of Large-Scale Composite Structure

Номер: US20170080685A1
Автор: Christopher J. Wohl, JR., Frank L. Palmieri, John W. Connell
Принадлежит: National Aeronautics and Space Administration NASA

A method for bonding composite structures which includes providing a first and second composite substrate and coupling a co-cure prepreg tape having chemically protected polymerizable functional groups onto a surface of both the first and second composite substrates. The first and second composite substrates are then cured to the co-cure prepreg tape at a first temperature to form a co-cure prepreg tape portion where the first and second composite substrates are fully cured and the co-cure prepreg tape is partially cured. The co-cure prepreg tape portion of the first composite substrate is then coupled to the co-cure prepreg tape portion of the second composite substrate and a deprotection initiator is applied to facilitate deprotection of the chemically protected polymerizable functional groups and cure the co-cure prepreg tape portion of the first and second composite substrates to form a single covalently bonded composite structure.

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Номер записи: 15
28-12-2017 дата публикации

Off-Set Resin Formulations and Blocking/Deblocking Resin Systems for Use as a "Co-Cure-Ply" in the Fabrication of Large-Scale Composite Structure

Номер: US20170368812A1
Автор: Frank L. Palmieri, John W. Connell, Wohl Christopher J, JR.
Принадлежит: National Aeronautics and Space Administration NASA

A method for bonding composite substrates includes coupling a first co-cure prepreg layer having a first off-set amine to epoxide molar ratio onto a surface of a first composite substrate and coupling a second co-cure prepreg layer having a second off-set amine to epoxide molar ratio onto a surface of a second composite substrate. The first and second composite substrates are cured to the first and second co-cure prepreg layers, respectively, using a first cure cycle (including B-stage and cure temperatures) to form a first and a second co-cure prepreg layer portion. The method further includes coupling the first co-cure prepreg layer portion to the second co-cure prepreg layer portion and applying a second cure cycle to cure the first co-cure prepreg layer portion of the first composite substrate to the second co-cure prepreg layer portion of the second composite substrate to form a monolithic covalently bonded composite structure.

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Номер записи: 16
12-11-2015 дата публикации

Dye Doped Polymer Microparticles

Номер: US20150322336A1
Автор: Christopher J. Wohl, JR., Jason E. Danley, Pacita I. Tiemsin, Paul M. Danehy
Принадлежит: National Aeronautics and Space Administration NASA

Various embodiments provide dye-doped polystyrene microspheres generated using dispersion polymerization. Polystyrene microspheres may be doped with fluorescent dyes, such as xanthene derivatives including kiton red 620 (KR620), using dispersion polymerization. Certain functionalities, such as sodium styrene sulfonate, may be used to shift the equilibrium distribution of dye molecules to favor incorporation of the dye into the particles. Polyelectrolyte materials, such as poly(diallyldimethyl ammonium chloride), PolyDADMAC, may be used to electrostatically trap and bind dye molecules within the particles. A buffer may be used to stabilize the pH change of the solution during dye-doped polystyrene microsphere generation and the buffer may be selected depending on the pKa of the dye being incorporated. The various embodiments may provide dye-doped polystyrene microspheres, such as KR620-doped polystyrene microspheres that are non-toxic and non-carcinogenic. These non-toxic and non-carcinogenic dye-doped polystyrene microspheres may be suitable for use in wind tunnel testing.

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Номер записи: 17
22-08-2024 дата публикации

Hydrogen-bonding surfaces for ice mitigation

Номер: US20240279485A1
Автор: Christopher J. Wohl, JR., Joseph G. Smith, Jr.
Принадлежит: National Aeronautics and Space Administration NASA

Various embodiments provide ice mitigating surface coatings and methods for applying ice mitigating surface coatings. Various embodiment ice mitigating surface coatings may be formed by hydrolysis of one or more substituted n-alkyldimethylalkoxysilanes terminated with functionalities having the following characteristics with respect to water: 1) non-polar interactions; 2) hydrogen bonding through donor and acceptor interactions; or 3) hydrogen bonding through acceptor interactions only. The substituted n-alkyldimethylalkoxysilanes of the various embodiments may include methyl terminated species, hydroxyl terminated species, ethylene glycol terminated species, and methoxyethylene glycol terminated species. Various embodiment ice mitigating surface coatings may be applied to metal surfaces, such as aluminum surfaces. Various embodiment substituted n-alkyldimethylalkoxysilanes may have an aliphatic chain that is saturated and liner or branched or that is partially unsaturated and liner or branched.

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Номер записи: 18
01-05-2018 дата публикации

Method of making dye-doped polystyre microparticles

Номер: US09957336B2
Автор: Christopher J. Wohl, JR., Jason E. Danley, Pacita I. Tiemsin, Paul M. Danehy
Принадлежит: National Aeronautics and Space Administration NASA

Various embodiments provide dye-doped polystyrene microspheres generated using dispersion polymerization. Polystyrene microspheres may be doped with fluorescent dyes, such as xanthene derivatives including kiton red 620 (KR620), using dispersion polymerization. Certain functionalities, such as sodium styrene sulfonate, may be used to shift the equilibrium distribution of dye molecules to favor incorporation of the dye into the particles. Polyelectrolyte materials, such as poly(diallyldimethyl ammonium chloride), PolyDADMAC, may be used to electrostatically trap and bind dye molecules within the particles. A buffer may be used to stabilize the pH change of the solution during dye-doped polystyrene microsphere generation and the buffer may be selected depending on the pKa of the dye being incorporated. The various embodiments may provide dye-doped polystyrene microspheres, such as KR620-doped polystyrene microspheres that are non-toxic and non-carcinogenic. These non-toxic and non-carcinogenic dye-doped polystyrene microspheres may be suitable for use in wind tunnel testing.

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Номер записи: 19
21-11-2017 дата публикации

Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor

Номер: US09822088B2
Автор: Christopher J. Wohl, Emilie J. Siochi, John W. Connell, Joseph G. Smith
Принадлежит: National Aeronautics and Space Administration NASA

Copoly(imide oxetane) materials are disclosed that can exhibit a low surface energy while possessing the mechanical, thermal, chemical and optical properties associated with polyimides. The copoly(imide oxetane)s are prepared using a minor amount of fluorinated oxetane-derived oligomer with sufficient fluorine-containing segments of the copoly(imide oxetane)s that migrate to the exterior surface of the polymeric material to yield low surface energies. Thus the coatings and articles of manufacture made with the copoly(imide oxetane)s of this invention are characterized as having an anisotropic fluorine composition. The low surface energies can be achieved with very low content of fluorinated oxetane-derived oligomer. The copolymers of this invention can enhance the viability of polyimides for many applications and may be acceptable where homopolyimide materials have been unacceptable.

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Номер записи: 20
24-01-2017 дата публикации

Fluorinated alkyl ether epoxy resin compositions and applications thereof

Номер: US09550911B2
Автор: Christopher J. Wohl, Emilie J. Siochi, Frank M. Palmieri, John M. Gardner, John W. Connell, Joseph G. Smith
Принадлежит: National Aeronautics and Space Administration NASA

Epoxy resin compositions prepared using amino terminated fluoro alkyl ethers. The epoxy resin compositions exhibit low surface adhesion properties making them useful as coatings, paints, moldings, adhesives, and fiber reinforced composites.

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Номер записи: 21