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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
办公地点:大连市凌工路2号大连理工大学西部校区化工实验楼A301,邮编:116024
电子邮箱:liyang@dlut.edu.cn
论文成果
当前位置: 大连理工大学李杨... >> 科学研究 >> 论文成果Morphological, Mechanical Properties, and Fracture Behavior of Bulk-Made ABS Resins Toughened by High-cis Polybutadiene Rubber
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论文类型:期刊论文
发表时间:2010-05-01
发表刊物:POLYMER ENGINEERING AND SCIENCE
收录刊物:SCIE、EI
卷号:50
期号:5
页面范围:961-969
ISSN号:0032-3888
摘要:Acrylonitrile-butadiene-styrene (ABS) resins with various rubber contents were prepared by applying nickel catalyzed high-cis polybutadiene rubber (BR9004) as toughening agent via bulk polymerization. The influence of rubber content and its characteristics on the morphology, mechanical properties, and fracture mechanisms of ABS resins were investigated. The relevant performance parameters were also evaluated and compared with a commercial injection grade resin (ABS-8434). The results show that each synthesized resin generally contains some irregular microsized particles with a certain amount of subinclusions besides the analogous 'sea-island' morphology to ABS-8434. The subinclusions considerably enhance the volume fraction of rubber phase; this leads to an increasing maximum loss tangent (tan delta) value, a decreasing storage modulus and glass transition temperature (T-g) of rubber phase. Besides, the higher grafting degree can not only produce a higher T-g of grafted copolymer but also improve the compatibility of rubber phase with matrix. Based on the performance measurements and fractography, the final product with a rubber content of 9.3% reveals ductile fracture behavior and excellent comprehensive properties far superior to ABS-8434 due to combined shear yielding and massive crazing. POLYM. ENG. SCI., 50:961-969, 2010. (C) 2009 Society of Plastics Engineers