Friedel-Crafts Resin/Carbon Fibre Composites: Part VI. Mechanical Properties.

摘要

The mechanical properties have been measured for composites of several types of carbon fibre with two different Friedel-Crafts resin matrices cured with two catalysts. Composite void contents averaged 4% and a processing procedure for minimsing voids is suggested. All composite mechanical properties were affected by the high void contents. However, calculations showed that strengths comparable with epoxy resin composites could potentially be obtained at zero void content. Composites where the resin was cured with FeCl3 had excellent strength retention at 200 C after postcure. BF3-cured resin composites had better interlaminar shear strengths than FeCl3-cured but had poorer properties at elevated temperatures. Aging at high temperatures indicated that, for FeCl3-cured resin, the time taken to lose a quarter of the initial composite strength would be one year at 200 C and 10 years at 150 C.