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为了满足飞行器结构对碳纤维复合材料性能的要求,最近已研制生产出中模量(295 Gpa)、高强度(5590Mpa)的TORAYC A800碳纤维。采用T800碳纤维大大地改善了主要由纤维起控制作用的复合材料的拉、压模量,带孔、无孔拉伸强度以及穿透载荷等性能。但是,纤维模量和强度的增加对复合材料的横向拉、压强度以及面内剪切强度并没有影响。本文还从改善复合材料在冲击后的横向开裂和横向压缩强度两个方面叙述了树脂基体的最近进展情况。
TORAYC A800 carbon fibers have been recently developed to produce medium modulus (295 Gpa) and high strength (5590 Mpa) in order to meet the structural requirements of aircraft structures for carbon fiber composites. The use of T800 carbon fiber greatly improves the tensile, compression modulus, perforated, nonporous tensile strength and penetration load properties of composites primarily controlled by fibers. However, the increase in fiber modulus and strength has no effect on the transverse pull, compressive strength, and in-plane shear strength of the composite. This article also describes the recent progress of the resin matrix from two aspects of improving the transverse cracking and transverse compressive strength of the composite after impact.