Stamford, CT, United States
Stamford, CT, United States

Hexcel is a materials company incorporated in Delaware and headquartered in Stamford, Connecticut, that manufactures composite materials and structural parts. The company was founded in 1946, and its first product was supplying honeycomb for the construction of military bombers. Hexcel claims to be the largest US producer of carbon fiber; a weaver of structural fabrics; the largest producer of composite materials such as honeycomb, prepreg, film adhesives and sandwich panels; and a manufacturer of composite parts and structures. Hexcel's primary markets are aerospace, defense, wind energy and industrial markets including automotive, marine and recreation. In 1971, Hexcel was a manufacturer of alpine skis, and it presently supplies composite materials for ski and snowboard manufacture.Hexcel has manufacturing facilities in West Valley City, Utah; Casa Grande, Arizona; Seguin, Texas; Decatur, Alabama; Pottsville, Pennsylvania; Burlington, Washington; Parla, Spain; Duxford, Cambridgeshire; Neumarkt im Hausruckkreis, Austria; Tianjin, China; Les Avenieres, France; Dagneux, France; and Welkenraedt, Belgium. Hexcel is publicly traded on the New York Stock Exchange under the ticker symbol HXL. Wikipedia.


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Patent
Hexcel Corporation | Date: 2015-08-07

A multi-sectional composite tooling for use in molding large composite structures. The tooling includes at least two tooling sections that are made from quasi-isotropic sheet molding compound. The two tooling sections are seamed together with a scarf plug at the tooling surface. The scarf plug is composed of specially oriented layers of consolidated quasi-isotropic sheet molding compound. The scarf plug is made from the same type of quasi-isotropic sheet molding compound that is used to make the tooling sections.


Patent
Hexcel Corporation | Date: 2015-10-16

An alternate resin-coated paper material for use in making honeycomb. The alternate resin-coated paper material is made from a paper that contains from 30 to 50 weight percent aramid fibers and from 50 to 70 weight percent of non-aramid fibers. A fire retarded phenolic resin is incorporated into the paper to make it self-extinguishing in less than 10 seconds with a self-extinguishing burn length of less than 12 inches when exposed to a 12-second vertical flame in accordance with the vertical burn test requirements set forth in 14 C.F.R. Part 25.583. The fire retarded phenolic resin includes a phenol formaldehyde resin and a phosphorous-containing fire retardant.


Patent
Hexcel Composites Ltd and Hexcel Corporation | Date: 2017-02-15

A prepreg comprising: a fiber reinforcement; and a curable resin which comprises: 25 to 35 weight percent tetrafunctional epoxy resin based on the total weight of the curable resin; 18 to 28 weight percent difunctional epoxy resin based on the total weight of the curable resin; 4 to 18 weight percent polyether sulfone based on the total weight of the curable resin; 2 to 10 weight percent polyamide 12 particles based on the total weight of the curable resin; 2 to 10 weight percent polyamide 11 particles based on the total weight of the curable resin; 1 to 8 weight percent potato shaped graphite particles based on the total weight of the curable resin; and 17.4 to 27.4 weight percent of a curing agent for said curable resin based on the total weight of the curable resin.


Tracking or tracing of both the global and local movements of unidirectional discontinuous fiber composite (UD-DFC ) chips during compression molding of UD-DFC molding compound. The tracking capability is provided by including tracer chips in the UD-DFC molding compound. The tracer chips include a resin matrix and at least one unidirectional carbon tow which is made up of a plurality of carbon filaments. The tracer chip further includes a unidirectional tracer yarn which is made up of a plurality of unidirectional filaments that are detectable by x-ray or other radiation-based scanning technique.


Patent
Hexcel Corporation | Date: 2017-01-11

Uncured epoxy resin for use in making prepreg for aerospace applications. The resin includes an epoxy resin component comprising difunctional epoxy resin, trifunctional epoxy resin and/or tetrafunctional epoxy resin and a sufficient amount of [3-(4-aminobenzoyl) oxyphenyl] 4-aminobenzoate (3-ABOAB, as a curing agent, such that the uncured resin can be stored at room temperature of at least 6 weeks and wherein the uncured resin can be fully cured in no more than 2 hours at a temperature of between 175C and 185C.


Patent
Hexcel Corporation and Hexcel Composites Ltd | Date: 2016-08-04

Uncured epoxy resin for use in making prepreg for aerospace applications. The resin includes an epoxy resin component comprising difunctional epoxy resin, trifunctional epoxy resin and/or tetrafunctional epoxy resin and a sufficient amount of [3-(4-aminobenzoyl) oxyphenyl] 4-aminobenzoate (3-ABOAB), as a curing agent, such that the uncured resin can be stored at room temperature of at least 6 weeks and wherein the uncured resin can be fully cured in no more than 2 hours at a temperature of between 175 C. and 185 C.


Patent
HEXCEL COMPOSITES Ltd and Hexcel Corporation | Date: 2015-02-06

Amino benzoates have been found to be useful curing agents for epoxy resins particularly para amino benzoates containing at least two primary amine groups and at least two carboxyl moieties, the amino benzoates are particularly useful as curatives in prepregs.


The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. The method comprises advancing a precursor fiber through an oxidation oven wherein the fiber is subjected to controlled stretching in an oxidizing atmosphere in which tension loads are distributed amongst a plurality of passes through the oxidation oven, which permits higher cumulative stretches to be achieved. The method also includes subjecting the fiber to controlled stretching in two or more of the passes that is sufficient to cause the fiber to undergo one or more transitions in each of the two or more passes. The invention is also directed to an oxidation oven having a plurality of cooperating drive rolls in series that can be driven independently of each other so that the amount of stretch applied to the oven in each of the plurality of passes can be independently controlled.


The invention is directed to carbon fibers having high tensile strength and modulus of elasticity. The invention also provides a method and apparatus for making the carbon fibers. The method comprises advancing a precursor fiber through an oxidation oven wherein the fiber is subjected to controlled stretching in an oxidizing atmosphere in which tension loads are distributed amongst a plurality of passes through the oxidation oven, which permits higher cumulative stretches to be achieved. The method also includes subjecting the fiber to controlled stretching in two or more of the passes that is sufficient to cause the fiber to undergo one or more transitions in each of the two or more passes. The invention is also directed to an oxidation oven having a plurality of cooperating drive rolls in series that can be driven independently of each other so that the amount of stretch applied to the oven in each of the plurality of passes can be independently controlled.


Patent
Hexcel Corporation | Date: 2015-05-13

Preforms for use in molding composite parts are made directly from composite chips that are composed of fibers and an uncured thermosetting resin. Cold composite chips are formed into a stream of non-agglomerating chips that is used to fill the cavity of a preform tool. The non-agglomerating chips flow into the preform tool cavity to form a population of non-cohesive composite chips. The non-cohesive composite chips are then heated to form a preform made up of a consolidated population of cohesive composite chips in which the non-sticky uncured thermosetting resin of the non-cohesive chips has been converted to a sticky uncured thermosetting resin.

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