界面柔性层对玻璃纤维毡增强聚丙烯复合材料力学性能的影响

通过橡胶分子链在玻璃纤维表面的接枝，在玻璃纤维毡增强聚丙烯复合体系中引入了界面柔性层，研究了柔性层的种类及厚度对复合体系界面结合及力学性能的影响，结果表明，采用容易与玻璃纤维表面形成化学键等牢固结合与基体树脂有一定相容性的橡胶分子链作为界面柔性层，可以获得高强度，高抗冲的玻璃纤维毡增强聚丙烯复合材料，柔性层的厚度对复合体系的力学性能有很大的影响，超过一定的厚度后，随着柔性层的增厚，玻璃纤维增强聚丙烯复合材料的力学性能呈下降的趋势。

INFLUENCE OF THE FLEXIBLE INTERLAYER ON THE MEC HANICAL PROPERTIES OF GLASS MAT REINFORCED POLYPROPYLENE COMPOSITE

The flexible interlayer was introduced into glass mat reinforced polypropylene composite by the grafting of rubber chain onto fiber surface. And the effect of the kind and thickness of flexible interlayer on the interfacial adhesion and the mechanical properties of composites was investigated. The results show that the composites having high strength and impact resistance can be obtained when the rubber chain that is easy to form chemical bonding with fiber surface and compatible with matrix resin is used as flexible interlayer. Furthermore, the thickness of flexible interlayer affects the mechanical properties of composite system. A limit value exists above which the mechanical properties will decrease with increasing the thickness.