PP-g-MA及其混合相容剂增容r-PET/PP共混物的力学性能  

Mechanical Properties of r-PET/PP Blends Compatibilized by PP-g-MA and Its Mixture

作　　者：王春广[1] 林劲新[1] 章自寿[1] 麦堪成[1] 

机构地区：[1]中山大学化学与化学工程学院材料科学研究所∥聚合物基复合材料近功能材料教育部重点实验室∥新型聚合物材料设计合成与应用广东省高校重点实验室,广东广州501275

出　　处：《中山大学学报（自然科学版）》2013年第1期63-67,73,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广东省重大科技专项资助项目(2010A080804021)

摘　　要：为利用废弃PET(r-PET)发展r-PET/PP共混物,该文制备了不同r-PET/相容剂、r-PET/PP和PP-g-MA及其混合相容剂增容r-PET/PP共混物,研究了以上共混物的拉伸、弯曲和冲击性能,讨论了不同相容剂对r-PET力学性能,r-PET对PP力学性能和增容共混物力学性能的影响。结果表明相容剂加入降低r-PET力学性能,r-PET提高PP拉伸和弯曲性能,r-PET/PP共混物的拉伸和弯曲性能随r-PET用量增加而提高,表明r-PET对PP中具有增强作用。PP-g-MA加入提高r-PET/PP共混物拉伸和弯曲性能,POE-g-MA和EVA-g-MA加入提高PP-g-MA增容r-PET/PP共混物冲击强度,采用混杂相容剂可获得综合性能优良的r-PET/PP共混物。In order to develop PP blends with recycled polyethylene terephthalate （r-PET）, the blends of r-PET with compatibitizer, r-PET/PP and compatibilized r-PET/PP blends were prepared. PP-g-MA and its mixture of POE-g-MA or EVA-g-MA with same functional group were used as compatibilizers. The ten- sile strength, flexural strength and modulus and impact strength of blends were characterized. The effect of compatibilizer and r-PET on mechanical properties of blends was studied. The results indicated that the mechanical properties of r-PET decreased by adding compatibilizer. But the tensile strength, flexural strength and modulus of iPP increased by introduction of r-PET, and the mechanical properties of r-PET/ iPP blends increased by adding compatibilization of PP-g-MA further. The increased mechanical properties of uncompatibilized and compatibilized r-PET/iPP blends with increasing r-PET contents indicated the presence of reinforcement of r-PET in the iPP matrix. The r-PET/iPP blends with high strength and high toughness could be obtained by compatibilization of mixture of compatibilizers. Addition of POE-g-MA or EVA-g-MA increased the impact strength of PP-g-MA compatibilized r-PET/PP blends. The r-PET/PP blends with high performance could be obtained by compatibilization of mixture PP-g-MA and POE-g-MA.

关 键 词：回收PET 聚丙烯 相容剂 力学性能 

分 类 号：O631.5[理学—高分子化学]