PP-g-Si对PP／GF的增容作用

制备了硅烷接枝聚丙烯(PP-g-Si)，研究了PP-g-Si作为聚丙烯／玻纤(PP／GF)复合体系的界面相容剂对界面结合和力学性能的影响，并与马来酸酐接枝聚丙烯(PP-g-MAH)的增容效果进行了比较。结果表明，PP-g-Si对PP／GF体系有增容作用，不仅可以改善PP／GF复合体系的拉伸强度，而且可以改善其韧性。硅烷接枝聚丙烯可以降低PP／GF复合体系的最大扭矩。玻纤的加入可以提高聚丙烯的热变形温度，硅烷接枝聚丙烯对PP／GF复合体系的热变形温度有稍微改善。扫描电镜观察表明，玻纤与基体间具有强有力的界面结合，硅烷接枝聚丙烯的增容效果优于马来酸酐接枝聚丙烯。

Compatibilization of Silane Grafted Polypropylene on PP/GF Composites

A silane was grafted onto polypropylene (PP) and the product was employed as a coupling agent in PP/glass-fiber composites.SEM showed that the interaction at the interface between PP and glass fiber was strengthened by the grafting.As a result,the tensile strength,the toughness,and the thermal deformation temperature were increased.However,the maximal torque was reduced.Compared with maleic anhydride grafted PP,the silane grafting exhibited a better effect of compatibilization.