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Hexcel manufactures aramid fabrics for use in aerospace applications as well as marine, tooling and recreational products where high strength, low weight, and impact resistance are essential.
Aramid fibers are 43 percent lighter than fiber glass, with a density of 1.44 g/cc compared to 2.55 g/cc for fiber glass. They are twice as strong as E-glass, ten times as strong as aluminum and approach the strength of high strength carbon on a specific tensile strength basis.
Aramids display excellent dimensional stability with a slightly negative coefficient of thermal expansion (-2.4 X 10-6/ºC.) They are resistant to chemicals with the exception of a few strong acids and alkalis.
Aramids have excellent stability over a wide range of temperatures for prolonged periods. They show essentially no embrittlement or strength loss at temperatures as low as -320ºF (-196ºC). Aramids do not melt or support combustion but will start to carbonize at approximately 800ºF (427ºC).
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Aramid & Hybrid products: Most aramid & hybrid products are made to order, although some biaxial +/-45 fabrics are made regularly, and these are shown on the list below. Please discuss your exact requirements with our technical sales team..
All fabrics available cut into tapes .
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Hybrid fabrics allow to optimize the different chemical - physical properties of the fibres to obtain synergy between them, together with a good compromise on costs.
It is therefore possible to combine in the same fabric the rigidity of carbon fibres with the impact resistance of para-aramidic fibres, or the better adhesion of the resins to glass fibres with the mechanical and anti-ballistic properties of para-aramidic fibres.
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SGL Group operates the most up-to-date facilities for the production of pre-impregnated materials. Our unidirectional SIGRAFIL® prepregs are based on carbon fibers, and our SIGRATEX® fabric prepregs are made from carbon fiber fabrics.
By acquiring epo gmbh and the prepregs brand PREDO®, we have expanded our product portfolio as well as our core competency in the field of pre-impregnated materials.
* SIGRATEX® fabric prepregs
* SIGRAFIL® unidirectional prepregs
* PREDO® prepregs (For further information on the product, please refer to related subjects)
The fiber type is the main factor determining the strength, Young's modulus and other important properties of fiber composite products. The reinforcement fibers are precisely aligned and economically combined with the resin matrix.
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L-701 is a 250°F (121°C) curing, high peel strength, flame retardant, epoxy prepreg available on aramid fabrics such as 285 style or other styles as requested. L-701 is intended to be used as a single ply or multiple ply skin for aramid/phenolic honeycomb, aluminum honeycomb or PVC foam core sandwich panels.
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