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采用共辐照接枝法合成UHMWPE-g-AA接枝共聚物;采用共混技术制备UHMWPE/PA1010合金。以UHMWPE-g-AA接枝共聚物作为UHMWPE/PA1010合金增容剂。由于PA1010与UHMWPE-g-AA有较强的相互作用,UHMWPE/PA1010合金的冲击强度和断裂伸长率提高,韧性得到改善;同时,这种相互作用限制了PA1010的结晶,使PA1010中正常的结晶含量减少,结晶温度升高。SEM结果表明,增容作用使基体与分散相间界面张力减小,粘结性增强,从而使分散相的粒子尺寸减小,分布更加均匀,拉伸断面显示明显的牵拉现象。共混体系的摩擦系数与纯PA1010相比明显降低,摩擦时在PA1010表面形成完整UHMWPE的润滑膜,使磨耗量减小,摩擦系数降低。
UHMWPE-g-AA graft copolymer was synthesized by co-irradiation grafting method. UHMWPE / PA1010 alloy was prepared by blending technology. UHMWPE-g-AA graft copolymer as UHMWPE / PA1010 alloy compatibilizer. Due to the strong interaction between PA1010 and UHMWPE-g-AA, the impact strength and elongation at break of UHMWPE / PA1010 alloy are improved and the toughness is improved. At the same time, this interaction limits the crystallization of PA1010, Crystal content decreased, the crystallization temperature increased. SEM results show that the compatibilization can reduce the interfacial tension between the matrix and the disperse phase and enhance the adhesion, so that the particle size of the dispersed phase decreases, the distribution is more uniform, and the tensile section shows obvious pulling phenomenon. Compared with pure PA1010, the friction coefficient of blends decreased obviously. When rubbed, a complete UHMWPE lubricating film was formed on the surface of PA1010 to reduce the wear and reduce the friction coefficient.