氧化锌-玻璃纤维复合物增韧PP材料的研究

Study on Toughening PP Materials with ZnO-GF Composites

用原位生成法制备了氧化锌-玻璃纤维（ZnO-GF）复合物。并通过熔融共混得到聚丙烯（PP）/ZnO-GF复合材料。考察了ZnO-GF复合物对PP结晶性能．力学性能和抗紫外老化性能的影响。结果表明：使用原位生成法可使ZnO在GF表面大量生成，并结合紧密；ZnO—GF复合物可在PP基体中均匀分散，PP／ZnO-GF复合材料的结量度降低；加入15份ZnO—GF可使PP复合材料的拉伸强度，弯曲强度和冲击强度分别提高33％，24％，23％，同时复合材料的抗紫外老化性能明显提高。

Zinc oxide-glass fiber （ZnO-GF） composites were prepared by in-situ synthesis and polypropylene （PP）/ZnO-GF composites were prepared by melt blending. The effects of ZnO-GF complex on the crystallization, mechanical properties and UV aging resistance of PP were investigated. The results show that： ZnO is synthesized in large amounts on the surface of GF and also binds tightly. The ZnO-GF complex can be dispersed uniformly in the PP matrix, and the crystallinity of the PP/ZnO-GF composite decreases. The tensile strength, bending strength and impact strength of PP composites are increased by 33%, 24% and 23% respectively, when 15 phr ZnO- GF is added, and the ultraviolet aging resistance of the composites is improved obviously.