增容PP／回收PET共混物的力学性能  

Mechanical properties of compatibilized polypropylene/recycled poly(ethylene terephthalate) blends

作　　者：陶友季[1,2] 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,教育部聚合物复合材料及功能材料重点实验室,广东广州510275 [2]中国电器科学研究院,工业产品环境适应性国家重点实验室,广东广州510663

出　　处：《合成树脂及塑料》2009年第6期54-57,共4页China Synthetic Resin and Plastics

基　　金：广东省科技计划项目(2008A010500003);广东省自然科学重点基金(06104925);广州市应用基础研究项目

摘　　要：采用熔融挤出法制备了聚丙烯(PP)/增容剂/回收聚对苯二甲酸乙二酯(r-PET)共混物,研究了r-PET、不同增容剂和混合增容剂对PP/r-PET共混物力学性能的影响。r-PET提高了PP的拉伸强度、弯曲强度及其模量,但降低了冲击强度;采用马来酸酐接枝聚丙烯(PP-g-MAH)增容,可提高PP/r-PET共混物的拉伸强度、弯曲强度及其模量,但使冲击强度稍有降低;马来酸酐接枝乙烯-辛烯共聚物(POE-g-MAH)增容或PP-g-MAH/POE-g-MAH混合增容可提高PP/r-PET共混物的冲击强度,且对共混物的拉伸和弯曲强度影响不大。Blends of polypropylene（PP）/compatibilizers/recycled poly（ethylene terephthalate）（PET） were prepared by melt extrusion. Effects of recycled PET and different compatibilizer systems on the mechanical properties of PP/recycled PET blends were investigated. The results show that adding recycled PET increases the tensile strength and modulus, flexural strength and modulus of PP/recycled PET blends, but decreases the impact strength of the blends. The compatibilization of PP grafted by maleic anhydride（PP-g-MAH） further improves the tensile strength and modulus, flexural strength and modulus, but leads to a slight decline in the impact strength of PP/recycled PET blends. The compatibilization of ethylene-octene copolymer grafted by maleic anhydride（POE-g-MAH） or the combined use of PP-g-MAH/POE-g-MAH enhances the impact strength of PP/ recycled PET blends and have little influence on the tensile and flexural strength of the blends.

关 键 词：聚丙烯 聚对苯二甲酸乙二酯 回收 力学性能 增容剂 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]