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.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
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)
