PBO fiber reinforced resin-based composite material and preparation method thereof

The invention discloses a PBO fiber reinforced resin-based composite material and a preparation method thereof. According to the method, PBO high-strength and high-modulus fibers are used as a reinforcing material, polyimide resin is used as a matrix, modified phenyl imide silane is used as a coupling agent to carry out surface modification on the PBO fibers, and then the PBO fiber reinforced resin-based composite material is obtained through compression molding of the PBO fibers and the polyimide resin. The composite material prepared by the method has the performance characteristics of lightweight, high temperature resistance, high strength and high modulus. 本发明公开了一种PBO纤维增强树脂基复合材料及其制备方法，该方法以PBO高强高模纤维为增强材料，以聚酰亚胺树脂为基体，先以经过改性的苯基酰亚胺硅烷作为偶联剂对PBO纤维进行表面改性，再通过PBO纤维与聚酰亚胺树脂模压成型，得到PBO纤维增强树脂基复合材料。采用该方法制备的复合材料具有轻质、耐高温、高强度、高模量的性能特点。