摘要
研究了苯乙烯 -丁二烯 -苯乙烯三嵌段共聚物 (SBS)对聚丙烯 /聚苯乙烯 (PP/PS)合金的形态结构和力学性能的影响。结果表明 :SBS是PP/PS合金良好的增容剂 ,只要体系中加入质量分数少于 10 %的SBS ,就能很大程度提高合金的冲击强度 ,改善体系的相形态结构 ;当m (PP)∶m (PS) =75∶2 5时 ,与简单物理共混的PP/PS相比 ,其冲击强度由 4 5 3kJ/m2 增加到 65 3 6kJ/m2 ;同时随PS质量分数的增加 。
The effects of triblock copolymer poly(styrene butadiene stryene)(SBS) on the morphology and mechanical properties of polypropylene/polystyrene(PP/PS) alloy were studied The results showed that SBS could be used as a good compatibilizer for PP/PS alloy When the mass fraction of SBS in the triblock copolymer was less than 10%,the impact strength and the morphology could be improved greatly For example,the impact strength of PP/PS alloy increased from 4 53 kJ/m 2to 65 36 kJ/m 2when m(PP)∶m(PS)=75∶25,and the tensile strength of the PP/PS blends increased with the increase of PS mass fraction
出处
《塑料工业》
CAS
CSCD
北大核心
2003年第9期15-17,41,共4页
China Plastics Industry
