文献类型：期刊文献

英文题名：Drop weight impact and work of fracture of short glass fiber reinforced polypropylene composites toughened with elastomer

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

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, Peoples R China;[3]Univ Sydney, Ctr Adv Mat Technol, Sydney, NSW 2006, Australia;[4]City Univ Hong Kong, Dept Mfg Engn & Engn Management, Kowloon, Hong Kong, Peoples R China

年份：2003

卷号：24

期号：3

起止页码：437

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：2004168114458);WOS:【SCI-EXPANDED(收录号:WOS:000183848600014)】；

语种：英文

外文关键词：Composite materials - Copolymers - Deformation - Elastomers - Fracture - Polypropylenes - Rubber - Toughness

摘要：Short glass fiber (SGF) reinforced polypropylene composites toughened with styrene-ethylene butylene-styrene (SEBS) or maleated SEBS (SEBS-g-MA) triblock copolymer were injection molded. Charpy drop-weight impact properties and the impact essential work of fracture (EWT) of the SGF/SEBS/PP and SGF/SEBS-g-MA/PP hybrids were investigated. Drop-weight impact results revealed that the SGF/SEBS/PP hybrid exhibits higher impact strength than the SGF/SEBS-g-MA/PP hybrid at low impact speeds. This was derived from the pull-out of fibers from the SGF/SEBS/PP hybrid. At high impact speeds, the impact strength of the SGF/SEBS-g-MA/PP hybrid was slightly higher than that of the SGF/SEBS/PP hybrid. Impact EWT measurements showed that the hybrids only exhibit specific essential work (omega(e)) at a high impact speed of 3 ms(-1). The non-essential work does not occur in the hybrids under high impact rate loading conditions. Moreover, SEBS or SEBS-g-MA addition was beneficial in enhancing the high-rate specific essential work of the SGF/SEBS/PP and SGF/SEBS-g-MA/PP hybrid composites.