文献类型：期刊文献

英文题名：Tensile deformation mechanism of polyamide 6,6/SEBS-g-MA blend and its hybrid composites reinforced with short glass fibers

作者：Tjong, Sie Chin[1]; Xu, Shi-Al[2]; Mai, Yiu-Wing[3,4]

机构：[1]City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China;[2]E China Univ Sci & Technol, Inst Polymer Sci & Engn, Shanghai 200237, Peoples R China;[3]City Univ Hong Kong, MEEM Dept, Hong Kong, Hong Kong, Peoples R China;[4]Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

年份：2003

卷号：38

期号：2

起止页码：207

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;EI(收录号：2003097372930);WOS:【SCI-EXPANDED(收录号:WOS:000179311100003)】；

语种：英文

外文关键词：Compounding (chemical) - Debonding - Elastomers - Glass fiber reinforced plastics - Injection molding - Polyamides - Scanning electron microscopy - Strain - Tensile properties

摘要：Short glass fiber (SGF) reinforced polyamide 6,6 hybrid composites toughened with maleated styrene-ethylene butylenes-styrene (SEBS-g-MA) elastomer were prepared by compounding and subsequent injection molding. The hybrids were reinforced with 5, 10, 15, 20 and 30 wt% SGF. The matrix of the hybrids consisted of 80 wt% PA6,6 and 20 wt% SEBS-g-MA. Dilatometery was employed to characterize the deformation mechanisms of tough PA6,6/SEBS-g-MA 80/20 blend and its hybrid composites under uniaxial tension. Dilatometric responses showed that both cavitation and shear yielding occur in PA6,6/SEBS-g-MA 80/20 blend during deformation. And the cavitation deformation prevailed over shear yielding in this blend after the initial elastic deformation. Moreover, the volume strain was observed to increase considerably with increasing SGF content for the hybrids investigated. SEM examination revealed that microvoids originated from the debonding of glass fiber from the PA6,6 matrix were responsible for the cavitation strain in the hybrids. Consequently, cavitation deformation predominated over shear yielding in hybrids. (C) 2003 Kluwer Academic Publishers.