rPET/POE/LDPE-g-AA复合材料的制备及性能  

PREPARATION AND PROPERTY OF rPET/POE/LDPE-g-AA BLENDS

作　　者：甘晓平[1] 张华集[1] 陈晓[1] 张雯[1] 沈永鑫[1] 

机构地区：[1]福建师范大学化学与材料学院福建省高分子材料重点实验室,福州350007

出　　处：《工程塑料应用》2011年第11期4-7,共4页Engineering Plastics Application

基　　金：福建省科技厅项目(2009H0017);福州市科技计划项目(2010-G-109)

摘　　要：以回收聚对苯二甲酸乙二酯(rPET)为基体材料,乙烯-辛烯共聚物(POE)为增韧材料,丙烯酸接枝低密度聚乙烯(LDPE-g-AA)为增容剂,制备了rPET/POE/LDPE-g-AA复合材料。分析了POE、LDPE-g-AA对rPET玻璃化转变温度、断面相结构、结晶性能、力学性能的影响。结果表明,加入POE,rPET/POE复合材料的熔融温度和结晶度有所下降,断裂伸长率及缺口冲击强度明显提高;含质量分数2.0%LDPE-g-AA的rPET/POE/LDPE-g-AA复合材料,其结晶温度升高,结晶速率加快,与纯rPET相比,缺口冲击强度提高249.3%,断裂伸长率提高17.2倍,柔韧性大幅度提高。Blends of recycled poly （ ethylene terephthalate ） （ rPET ）/poly （ ethylene octene ） （ POE ）/acrylic acid grafted low density polyethylene （ LDPE-g-AA ） were prepared by using rPET as matrix material, POE as toughening agent, and LDPE-g-AA as compatibilizer. The effects of POE and LDPE-g-AA on glass transition temperature, crystalline behavior, morphology and mechanical properties of blends were investigated.The results indicated that by blending with POE, the melting temperature and crystallinity of rPET in rPET/POE blends decreased appreciably, the blends＇ notched Izod impact strength and fracture elongation increased.When the content of compatibilizer was 2.0wt%, the crystallization temperature of rPET in rPET/POE /LDPE-g-AA blends shifted to higher temperature, and the crystalline rate of the rPET in blends increased.Compared with rPET, mechanical properties of rPET/POE/LDPE-g-AA blends improved ulteriorly, the blends＇ notched Izod impact strength increased by 249.3%, and fracture elongation improved 17.2 times.

关 键 词：回收聚对苯二甲酸乙二酯 乙烯-辛烯共聚物 丙烯酸接枝低密度聚乙烯 复合材料 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]