马来酸酐接枝氯化聚丙烯的表面性质及粘接作用

研究了马来酸酐在氯化聚丙烯分子链上的接枝对其表面性质的影响,探讨了马来酸酐接枝氯化聚丙烯与聚丙烯及金属的粘接作用及耐水性。结果表明:随着MAH接枝率的增加,水与CPP-g-MAH的接触角逐步减小,CPP-g-MAH的表面能及极性部分增大;CPP-g-MAH对不锈钢、聚丙烯有良好的粘接作用,其粘接性能要明显优于CPP及市售的TS-2聚丙烯胶粘剂,随着接枝率的增加,粘接强度增大;CPP-g-MAH对聚丙烯的粘接作用具有良好的耐水性,经96 h 100℃沸水的浸泡,粘接强度没有发生明显下降。

Grafting of Chlorinated Polypropylene and Its Adhesion to Polypropylene

The effect of the grafting of maleic acid (MAH) onto chlorinated polypropylene(CPP) on the surface property was studied.The adhesion of CPP-g-MAH to polypropylene and metal and its hydrothermal resistance were investigated too.The results show that the dynamic contact angle of distilled water on CPP-g-MAH gradually decreases with increasing the grafting degree of CPP-g-MAH,the surface energy and its polar component increases.There is better adhesion of CPP-g-MAH to polypropylene and metal,the adhesion strength increases with increasing the grafting degree,which is superior to that of CPP and the commercial TS-2 adhesive special for polypropylene.The hydrothermal stability of the adhesion of CPP-g-MAH to PP is better,the significant debonding did not occur after immersed in boiling water for 96 h.