两种不同粒径的SBR粒子对透明ABS树脂力学性能影响  

THE EFFECT ON MECHANICAL PROPERTY OF TRANSPARENT ABS RESIN CAUSED BY SBR BI-MODEL PARTICLES

作　　者：张大雷[1] 栾明玥[1] 林权[1] 崔占臣[1] 杨柏[1] 

机构地区：[1]吉林大学超分子结构与材料教育部重点实验室,长春130012

出　　处：《高分子学报》2006年第2期356-360,共5页Acta Polymerica Sinica

基　　金：国家重大基础研究专项经费资助项目(项目号G1999064803);长江学者和创新团队发展计划资助项目号IRT0422)

摘　　要：从SBR橡胶粒子出发，采用乳液原位悬浮聚合方法合成了一系列透明ABS树脂．采用小粒径SBR橡胶粒子虽然可以获得透明性良好的透明ABS树脂，但树脂的抗冲性能较差．采用大粒径SBR橡胶粒子ABS树脂的透明性明显下降．采用由粒径分别为400nm和70nm两种SBR橡胶粒子所组成的双峰粒子（指粒度分布谱上有两个峰）体系，当二者比例在4／6—6／4范围内，总橡胶粒子含量为15％～18％时，所得到的透明ABS树脂冲击强度已经达到90—120J／m，透光率超过80％．初步探讨了不同增韧体系的ABS树脂的脆韧转变关系；研究了不同粒径橡胶粒子的协同增韧效应．确定了由SBR双峰粒子增韧体系获得具有良好力学和透光性能的ABS树脂的基本条件．A series of transparent ABS （T-ABS） resins have been prepared by emulsion in situ suspension polymerization process. It was found that the transparence of T-ABS was satisfactory but the impact strength was lower when smaller SBR particles was used as rubber phase. The transparence of T-ABS was lowered when larger SBR particles were used as rubber phase. When SBR bi-modal particles （S70 nm/S400 nm= 4/6- 6/4,total rubber content 15% to 18% ） were used as the dispersion phase,the transparence of ABS resin was higher than 80% and the impact strength was between 90 J/m and 120 J/m. The brittle-tough transition of T-ABS resin using different SBR particles as rubber phase was preliminarily discussed. Synergistic toughening effect of different SBR particles on T- ABS resin was studied. The basic conditions under which the prepared T-ABS resin showed high transparence and satisfactory mechanical properties were found.

关 键 词：透明ABS树脂 双峰分布SBR粒子 增韧 

分 类 号：TQ325.2O629.73[化学工程—合成树脂塑料工业]