采用“离位”增韧技术对双马来酰亚胺复合材料层压板进行了层间增韧,然后对增韧和未增韧的两种双马复合材料层压板进行准静态压入及冲击后压缩剩余强度试验研究,并用超声C扫描和热揭层对层压板的损伤进行测量.结果表明:经过“离位”增韧的双马复合材料层压板层间形成了热塑性树脂/热固性树脂双连续的结构,该结构不仅能抑制增韧层压板的内部损伤面积,改善损伤阻抗,使其表面凹坑深度更明显,而且还大幅提高了其损伤容限.%The bismaleimide composite laminates were toughened via "Ex~situ" toughened technique. Then the toughened and non-toughened composite laminates were tested by using the quasi-static indentation and compression after impact, and the damage of laminates was also investigated by ultrasonic C-scan and deply. The results indicate that the thermoplastic resin/thermoset resin bicontinuous structure forms in the interlayer of the toughened bismaleimide laminates. The special structure can inhibit the damage area of the toughened laminates and improve the damage resistance of laminates, resulting in a more apparent dent depth on the laminates surface. In addition, the damage tolerance of laminates is also improved.
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