Method for producing sized glass fibers and resulting products

A process for producing sized glass yarns, which entails:a) drawing streams of molten glass from orifices located at a bottom of one or more dies, in a form of one or more fans of continuous filaments,b) assembling the filaments into one or more moving supports,wherein a first stable composition having a viscosity of between 0.5 and 250 cP is deposited onto the surface of the continuous filaments, and a second stable composition, supplied separately from the first and having a viscosity of between 0.5 and 300 cP, is deposited onto the surface of the filaments of the yarns, at the earliest during deposition of the first composition and at the latest during collection of the years, the difference in viscosity between the two compositions deposited being less than 150 cP, the mixture of the deposited compositions functioning as a sizing composition and being polymerizable at room temperature.

Procede de preparation de zircone stabilisee a l'yttrium et produit ainsi obtenu

L'invention a trait a un procede de preparation d'une poudre fine de zircone stabilisee a l'yttrium essentiellement sous la forme quadratique, ledit procede etant caracterise en ce qu'il comprend les etapes suivantes : a) on prepare un melange aqueux d'acetate de zirconyle et d'acetate d'yttrium, b) on amene le pH dudit melange a une valeur au moins egale a 5, c) on elimine le solvant dudit melange, d) on pyrolyse le residu solide obtenu a l'issue de l'etape c. Elle concerne egalement les produits obtenus par ledit procede.

Method for producing sized glass fibres and resulting products

Process for quantifying the moisture in a fiber blanket

A process for quantifying the moisture in a blanket of fibers includes the emission of an incident electromagnetic wave towards the blanket, by at least one emitter; the receiving of the electromagnetic wave transmitted through the blanket, by at least one receiver; the identification of a variation of at least one parameter of the transmitted wave relative to the incident wave; the determination of a representative value of moisture in the blanket of fibers, as a function of the variation and of the effective volume of blanket that has actually interacted with the incident wave.

Composition for joints

A composition based on calcium carbonate includes nanometric boehmite and/or nanometric aluminum trihydroxide. A coating can be obtained from this composition. This composition makes it possible to obtain products having better high-temperature dimensional stability.

Glass fibre coating composition, method using said composition and resulting product

The present invention relates to a sizing composition for a glass yarn, consisting of a solution whose solvent content is less than 5% by weight, this solution comprising at least 60% by weight of polymerizable components, at least 60% by weight of these polymerizable components being components with a molecular mass of less than 750 and these polymerizable components comprising at least one mixture capable of polymerizing:of component(s) containing at least one reactive acrylic function and/or at least one reactive methacrylic function, andof component(s) containing at least one reactive primary amine function and/or at least one reactive secondary amine function,at least 20% of the polymerizable components containing at least two reactive functions chosen from acrylic, methacrylic, primary amine and secondary amine functions.

PROCESS FOR QUANTIFYING THE MOISTURE IN A FIBER BLANKET

A process for quantifying the moisture in a blanket of fibers includes the emission of an incident electromagnetic wave towards the blanket, by at least one emitter; the receiving of the electromagnetic wave transmitted through the blanket, by at least one receiver; the identification of a variation of at least one parameter of the transmitted wave relative to the incident wave; the determination of a representative value of moisture in the blanket of fibers, as a function of the variation and of the effective volume of blanket that has actually interacted with the incident wave. 1. A process for quantifying the moisture in a blanket of fibers , comprising:emitting an incident electromagnetic wave towards the blanket, by at least one emitter,receiving the electromagnetic wave transmitted through the blanket, by at least one receiver,identifying a variation of at least one parameter of the transmitted wave relative to the incident wave,determining a representative value of the moisture in the blanket of fibers, as a function of said variation and of an effective volume of blanket that has actually interacted with the incident wave.2. The process as claimed in claim 1 , wherein the incident wave is a microwave.3. The process as claimed in claim 1 , wherein a variation of one parameter of the transmitted wave relative to the incident wave is a phase shift.4. The process as claimed in claim 1 , wherein a variation of one parameter of the transmitted wave relative to the incident wave is a change in amplitude.5. The process as claimed in claim 1 , wherein the representative value of the moisture in the blanket of fibers corresponds to an actual amount of water that has interacted with the incident wave claim 1 , referred to as effective amount of water.6. The process as claimed in claim 5 , wherein the effective amount of water is determined by means of a mathematical relationship giving the variation of one parameter of the transmitted wave relative to the incident wave ...

Composition for joints

A composition based on calcium carbonate includes nanometric boehmite and/or nanometric aluminium trihydroxide. A coating can be obtained from this composition. This composition makes it possible to obtain products having better high-temperature dimensional stability.

COMPOSITION FOR JOINTS

Process for preparing solid solutions of nitrides and oxynitrides of certain transition metals and new solid solutions of said nitrides and oxynitrides

PROCESS FOR PRODUCING SIZED GLASS YARNS AND RESULTING PRODUCTS

SIZING COMPOSITION FOR GLASS WIRES, PROCESS USING THIS COMPOSITION AND RESULTING PRODUCTS

SIZING COMPOSITION FOR GLASS WIRES, PROCESS USING THIS COMPOSITION AND RESULTING PRODUCTS

The invention concerns a glass fibre coating composition consisting in a solution whereof the solvent content is less than 5 wt. %, said solution comprising at least 60 wt. % of polymerisable, said polymerisable constituents consisting for at least 60 wt. % of them constituents with molecular mass less than 750 and said polymerisable constituents comprising at least a polymerisable mixture of: constituent(s) having at least an acrylic reactive function and/or at least a methacrylic reactive function and constituent(s) having at least a primary amine reactive function and/or at least a secondary amine reactive function; at least 20 % of the polymerisable constituents having at least two reactive functions selected among acrylic, methacrylic, primary amine and secondary amine functions.

FILTERS INCLUDING SEPARATING LAYERS BASED ON BETA-SIC

Filtre pour la filtration d'un liquide, comprenant ou constitué par un élément support fait dans un matériau céramique poreux et une couche séparatrice membranaire pour la filtration dudit liquide, ledit élément support étant recouvert sur la partie de sa surface au contact du liquide à filtrer par ladite couche séparatrice membranaire, ladite couche séparatrice étant faite dans un matériau comprenant au moins 70% poids de carbure de silicium SiC par rapport au poids total de l'ensemble des composés minéraux présents dans ladite couche séparatrice, ledit filtre étant caractérisé en ce que le ratio entre la teneur molaire en SiC sous la forme béta et la teneur molaire en SiC sous la forme alpha est supérieur à 0,5. Filter for the filtration of a liquid, comprising or constituted by a support element made of a porous ceramic material and a separating membrane layer for the filtration of said liquid, said support element being covered on the part of its surface in contact with the liquid to be filtered by said membrane separating layer, said separating layer being made of a material comprising at least 70% by weight of silicon carbide SiC relative to the total weight of all the mineral compounds present in said separating layer, said filter being characterized in that the ratio between the molar content of SiC in the beta form and the molar content of SiC in the alpha form is greater than 0.5.

New process for obtaining metal carbonitrides, in particular of vanadium, niobium and tantalum, and of metal oxycarbonitrides, in particular of niobium and new niobium oxycarbonitrides

Composition for joints

The invention relates to a composition based on calcium carbonate, comprising nanometic boehmite and/or nanometric aluminium trihydroxide, and also a coating obtained from said composition. This composition makes it possible to obtain products having a better dimensional stability at high temperature.

Glass fibre coating composition, method using said composition and resulting product

The invention concerns a glass fibre coating composition consisting in a solution whereof the solvent content is less than 5 wt. %, said solution comprising at least 60 wt. % of polymerisable, said polymerisable constituents consisting for at least 60 wt. % of them constituents with molecular mass less than 750 and said polymerisable constituents comprising at least a polymerisable mixture of: constituent(s) having at least an acrylic reactive function and/or at least a methacrylic reactive function and constituent(s) having at least a primary amine reactive function and/or at least a secondary amine reactive function; at least 20 % of the polymerisable constituents having at least two reactive functions selected among acrylic, methacrylic, primary amine and secondary amine functions.

Fiberglass coating composition, application thereof and the product obtained

Sposób kwantyfikacji wilgoci w macie z włókien

Método para cuantificar la humedad en una estera de fibras

Un método para cuantificar la humedad en una estera (14) de fibras (12) comprende hacer que al menos un transmisor (44c, 44d) transmita una onda electromagnética incidente en la dirección de la estera (14); tener al menos un receptor (46c, 46d) recibir la onda electromagnética transmitida por la estera (14); identificar una variación de al menos un parámetro de la onda transmitida con respecto a la onda incidente; determinar un valor que representa la humedad en la estera (14) de fibras (12) dependiendo de dicha variación y del volumen efectivo de la estera (14) que ha interactuado efectivamente con la onda incidente. (Traducción automática con Google Translate, sin valor legal)

Schlichtzusammensetzung für glasfasern, verwendungsverfahren und produkte daraus

Filtres comprenant des couches separatrices a base de beta-sic

Filtres comprenant des couches separatrices a base de beta-sic

Filtros que comprenden capas de separación basadas en SiC beta

Filtro para la filtración de un líquido, que comprende o está formado por un elemento de soporte fabricado a partir de un material cerámico poroso y una capa de separación de membrana para la filtración de dicho líquido, estando cubierto dicho elemento de soporte en la porción de su superficie en contacto con el líquido para ser filtrado por dicha capa de separación de membrana, estando hecha dicha capa de separación de un material que comprende al menos 70% en peso de carburo de silicio SiC con respecto al peso total de todos los compuestos minerales presentes en dicha capa de separación, caracterizándose dicho filtro porque la relación entre el contenido molar de SiC en forma beta y el contenido molar de SiC en forma alfa es superior a 0,5. (Traducción automática con Google Translate, sin valor legal)