r-PET/ABS共混合金材料的研究  

Study on the r-PET/ABS blends

作　　者：刘丽娟[1] 张华集[1] 陈晓[1] 张雯[1] 姚忠亮[1] 许静[1] 

机构地区：[1]福建师范大学化学与材料学院,福州350007

出　　处：《化工新型材料》2011年第2期104-106,共3页New Chemical Materials

基　　金：福建省科技厅资助项目(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醇酯(r-PET)为基体材料,丙烯腈-丁二烯-苯乙烯共聚物(ABS)为增强材料,添加相容剂A,通过挤出、注塑成型方法制备r-PET/ABS共混合金材料。用SEM观察分析r-PET/ABS共混体系形态结构,用差示扫描量热法(DSC)对r-PET/ABS共混体系的结晶性能进行了表征,并对其力学性能进行分析测试。结果表明:r-PET/ABS共混合金为两相共连续结构,相容剂A的加入能改善r-PET/ABS共混合金两相界面,细化两相结构,增容效果良好;r-PET/ABS共混合金材料较纯r-PET熔融温度下降4.9℃,结晶温度升高23.7℃,结晶速度明显加快;含2%相容剂A的r-PET/ABS共混合金材料,与纯r-PET相比,拉伸强度提高45.14%,断裂伸长率提高60.42%,弯曲强度提高72.15%,缺口冲击强度提高29.19%,力学性能较大幅度提高。Novel blends of recycled poly（ethylene terephthalate）/acrylonitrile-butadiene-styrene（r-PET/ABS） were prepared by extrusion and injection molding. By contrasting with r-PET, the blends＇ morphology, crystalline behavior and mechanical properties were investigated. SEM studies of the fracture surface exhibited that r-PET and ABS morphologies appeared to be continuous throughout the structure. Besides, compatibilizer A might help the phases of blends disperse better and had great effect in improving the compatibility among the phases. By blending with ABS the melting temperature of the r-PET was decreased by 4.9℃, crystallization temperature increased markedly by 23.7℃, besides crystalline rate of the r-PET increased evidently. Added with 2wt% of compatibilizer A, mechanical properties of the blend improved apparently and comprehensively compared with r-PET： the tensile strength, fracture elongation, flexural strength, notched Izod impact strength were increased by 45.14%, 60.42%, 72.15% and 29.19%, respectively.

关 键 词：r-PET ABS 相容剂 共混合金材料 

分 类 号：TQ320.7[化学工程—合成树脂塑料工业]