用 DCB测定和 SEM观察了 PEK- C增韧 PF基玻璃布复合材料 型层间断裂。结果表明 ,随 PEK- C含量的增加 ,形成的球粒 -网络结构中连续相逐渐以线性结构为主 ;第二相球粒的数量也随之增多。同时 PEK- C中羰基提高了基体与玻纤的界面结合强度 ,织物交织孔隙造成的树脂柱“铆接”和织物平面弯曲引起的“界面转换”都阻碍了层间裂纹的扩展 ,提高了层间断裂韧度。 DCB determination and SEM observation of PEK-C toughened PF-based glass cloth composite material type interlaminar fracture. The results show that with the increase of PEK-C content, the continuous phase in the spherulite-network structure is gradually dominated by the linear structure, and the number of the second phase spheroids also increases. At the same time, the carbonyl group in PEK-C improves the interfacial bonding strength between the matrix and the glass fiber, the “riveting” of the resin column caused by the interlacing of the fabric and the “interfacial transition” caused by the plane bending of the fabric all hinder the expansion of the interlaminar crack, Fracture toughness.