Teijin Develops Highly Heat- and Impact- resistant Prepreg as Carbon Fiber Intermediate Material for Aerospace Applications
Tokyo, Japan, March 4, 2019 — Teijin Limited announced today its development of Japan’s first prepreg, or carbon fiber sheet pre-impregnated with bismaleimide (BMI) matrix resin
that offers high resistance to both heat and impact, making it ideally suited to use in aerospace engine components.
Highly heat- and impact-resistant prepreg
Teijin’s new BMI resin pre-impregnated prepreg achieves a high glass transition temperature (Tg) of 280℃ and compression after impact (CAI) of 220MPa, a previously difficult combination made possible based on Teijin’s original resin-composition formulating technology.
The new prepreg also maintains its coefficient of linear thermal expansion and high dimensional stability at both low and high temperatures.
Moreover, by adjusting resin viscosity, Teijin also has improved moldability by adjusting the resin flow through preforms in the mold cavity and reduced curing time with its new prepreg compared to conventional BMI-based prepregs.
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