PA1111/SEBS-g-MAH共混体系的力学性能与微观结构形态研究  

MECHANICAL PROPERTY AND MICROCOSMIC STRUCTURE OF PA1111/SEBS-g-MAH BLENDS

作　　者：徐迎强[1] 杨韶辉[1] 李召朋[1] 傅灿平[1] 张彦昌[1] 傅鹏[1] 刘民英[1] 王玉东[1] 赵清香[1] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450002

出　　处：《工程塑料应用》2009年第6期24-26,共3页Engineering Plastics Application

基　　金：河南省杰出人才创新基金项目(0521001300)

摘　　要：以马来酸酐接枝(苯乙烯/乙烯/丁烯/苯乙烯)共聚物(SEBS-g-MAH)为增韧剂制备出了一系列超韧尼龙(PA)1111/SEBS-g-MAH共混体系,并对其力学性能和微观结构进行了研究。结果表明,随着增韧剂含量的增加,共混体系的缺口冲击强度显著提高,当增韧剂质量分数为25%时,缺口冲击强度为39.4kJ/m2,是纯PA1111的11.3倍。微观结构研究表明,PA1111的断裂属于韧性断裂,PA1111/SEBS-g-MAH共混体系的缺口冲击断面有明显的应力发白现象,冲击强度提高的主要原因在于应力集中点的增多而引发大量银纹所致。Flesibilizer SEBS-g-MAH was used to prepare the system of PAl 111/SEBS-g-MAH, and the mechanical and microcosmic properties were studied. The result indicated that the notched izod impact strength enhanced obviously with the increase of toughening agent. When the content of SEBS-g-MAH was up to 25% ,the notched izod impact strength is 39.4 kJ/m2 ,which is 11.3 times of that of pure PAl 111. Microstructure showed that the fracture of PAl 111 belonged to ductile. There was the phenomenon of stress whitening on the cross-section of notched impact obviously, and the more stress content ration points and crazing resulted in the improvement of impact strength.

关 键 词：PA1111 马来酸酐接枝(苯乙烯/乙烯/丁烯/苯乙烯)共聚物 增韧 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]