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High Temperature Epoxy Resin System

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High Temperature Epoxy Resin System


A high glass transition temperature (Tg) toughened carbon fiber prepreg system designed for autoclave or out of autoclave (OOA) curing at 177 ºC is discussed. The carbon fiber prepreg system can be further cured at 210 ºC using a free standing post cure wherein the part is cured off of the tooling in a conventional oven. This allows the resin to be processed with conventional tooling and bagging techniques and can be cured alongside other 177 ºC cured parts. The curing mechanism of this resin system was studied using thermal and mechanical analysis to better understand the cured matrix’s properties. When compared with TORAY’s current aerospace prepreg system, #3900, the new system has equal or better mechanical properties at ambient conditions. The advantage of this system is its superior mechanical performance and thermal oxidative stability (TOS) at elevated temperatures, especially after hot/wet conditioning, due to its high Tg.


Author: Ben Lehman


Conference: SAMPE Seattle 2017


SKU/Code: SE17--0702

Pages: 13

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