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Composites

Toho Tenax develops new super high heat resistant prepreg

The new prepreg does not reach glass-transition below 320 degrees thanks to Toho Tanax’s original resin-formulation technology.

6th November 2014

Innovation in Textiles
 |  Tokyo

Protective, Transport/​Aerospace, Industrial

A carbon fibre sheet pre-impregnated with matrix resin, the new prepreg does not reach glass-transition below 320 degrees thanks to Toho Tanax’s original resin-formulation technology.

It also maintains oxidation resistance without heat cracks under continuous use in the range of upper 200 degrees, according to the manufacturer.

Prepregs

Prepregs, which are used as intermediate materials of carbon fibre reinforced plastics (CFRPs), are generally impregnated with lightweight high intensity epoxy resin.

 Conventional bismaleimide resin-impregnated prepreg has been already used for high-temperature applications, such as automotive and motorbike engine compartments, but it degrades due to resin oxidation after continuous use at high temperatures, allowing the formation of microcracks after repeated heat expansion and contraction.

Expansion

Toho Tenax, which has been developing technologies for new prepregs for aircraft, is now expanding the scope to include other high-heat applications, such as automotives.

To further expand its carbon fibres and composites business, Toho Tenax also intends to develop CFRP technologies to explore new applications in downstream industries, including materials for structural parts.

Teijin Group

Teijin is a technology driven group offering advanced solutions in the areas of sustainable transportation, information and electronics, safety and protection, environment and energy, and healthcare.

Its main fields of operation are high-performance fibres such as aramid, carbon fibres and composites, healthcare, films, resin and plastic processing, polyester fibres, products converting and IT. The group has some 150 companies and around 16,000 employees spread out over 20 countries worldwide.

www.teijin.com

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