摘要
采用机械共混法制得丁苯橡胶(SBR)/双酚A缩水甘油醚型环氧树脂(EP)复合材料,考察了橡胶硫化体系与EP固化体系的相互影响以及SBR/EP(质量比,下同)对复合材料结构和力学性能的影响。结果表明,SBR/EP复合材料中交联的形成分为橡胶交联和树脂交联网络2个阶段;橡胶硫黄硫化体系加速了EP的固化。复合材料中SBR与EP出现了相分离现象;当SBR/EP达到70/30时,EP形成连续相,复合材料成为具有双网络结构的橡塑复合材料;随着EP用量的增大,复合材料的拉伸强度、撕裂强度、100%定伸应力、硬度逐渐增大,扯断伸长率逐渐下降。
Styrene-butadiene rubber （ SBR ）/bis- phenol A glycidyl ether epoxy resin （EP） was pre2 pared by mechanical blending. The effects of inter- action between rubber curing system and EP curing system as well as the mass ratio of SBR to EP on morphology and mechanical properties of the com- posites were studied. The results showed that the formation of crosslinking network of the composite could be divided into two stages, rubber crosslinking and resin crosslinking, the sulfur vulcanizing system of rubber accelerated the curing of the EP. Thephase separation occurred in the composites. When the SBR/EP（mass ratio） was 70/30, the continuous phase of EP was formed, and the rubber-plastics composites exhibited double network structure. The tensile strength, tear strength, modulus at 100% , Shore A hardness of the composites gradually in- creased with the increase of EP amount, while elon- gation at break gradually decreased.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2012年第5期396-400,共5页
China Synthetic Rubber Industry
基金
湖南师范大学潇湘学者启动基金资助课题(化050613)
关键词
丁苯橡胶
环氧树脂
复合材料
双网络结构
相分离
力学性能
styrene-butadiene rubber
epoxy res-in
composite
double network structure
phase sep-aration
mechanical property
