环氧树脂对SGF/PET共混体系性能及微观结构的影响  

Effects of EP on Properties and Microstructure of SGF/PET Blends

作　　者：孙静[1] 杨其[1] 王琦[1] 黄亚江[1] 

机构地区：[1]四川大学高分子科学与工程学院高分子材料工程国家重点实验室,四川成都610065

出　　处：《塑料工业》2011年第4期82-86,共5页China Plastics Industry

基　　金：国家自然科学基金项目(50773042);新世纪优秀人才支持计划资助(NCET-10-0576);国家重点实验室专项经费项目

摘　　要：将两种不同环氧当量的双酚A型环氧树脂(EP)对短切玻纤(SGF)进行表面处理后,与聚对苯二甲酸乙二醇酯(PET)进行共混。通过力学性能、差示扫描量热法(DSC)以及扫描电镜(SEM)的测试,说明了EP的环氧当量和用量对SGF/PET共混体系力学性能,结晶性能以及微观形貌的影响。实验结果表明,用0.5份的EP903和EP619D对SGF进行表面处理后,共混体系的拉伸强度由原来的77.9 MPa分别提高到87.06 MPa和86.42 MPa,EP903型的改性效果优于EP619D型。用EP对SGF进行表面处理后,使共混体系的结晶度降低。通过SEM发现,EP对SGF处理后,SGF断裂面表面粗糙,黏附的基体较多,增强了SGF与PET之间的界面黏结性。the surface of SGF with two different epoxy equivalent of bisphenol-A EP was treated, and then blended with PET. The effects of contents of epoxy and epoxy equivalent on the mechanical properties, crystallization behavior, and microstructure of the composites were studied by mechanical property testing, DSC, and SEM. It was found that with the content of 0. 5 phr EP903 and EP619D treated the surface of SGF, the tensile strength of blends increased from 77.9 MPa to 87.06 MPa and 86.42 MPa respectively, and the modification effect of EP903 was better than the EP619D. The surface treatment of SGF lowered the crystallinity of PET and the fracture surface of SGF was rough, adhesion of the matrix was increased, also enhanced the interface adhesion between SGF and PET

关 键 词：聚对苯二甲酸乙二醇酯 短切玻璃纤维 环氧树酯 表面处理 共混 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]