摘要
采用SEM研究了B30/iPP,B30/sPS和sPS/iPP/B30共混体系的相形态结构。结果表明,B30/iPP,B30/sPS可相容;sPS/iPP是不相容体系,但B30可作为sPS/iPP共混体系的相容剂。DSC结果表明,加入适量的相容剂B30,共混体系中iPP玻璃化温度(iPP-Tg)随B30加入量增加而逐渐升高,而sPS玻璃化温度(sPS-Tg)随B30加入量增加而逐渐降低。在最佳配比条件下,共混物的力学性能比均聚物的要好.共混体系sPS/iPP/B30=90/10/10的无缺口冲击强度为42.3 kJ/m2,拉伸强度为33.7 MPa。
The phase morphology and mechanical properties of B30/iPP, B30/sPS and sPS/iPP/B30 blends were investigated by SEM. These results show that B30/iPP, B30/sPS and sPS/iPP/B30 blends are compatible. While sPS/iPP blend is incompatible. B30, the copolymer of sPS-b-polybutene-1（B30） promoted by metallocene catalyst Cp ＊ Ti（OBz）3/mMAO, can be used as compatilizer to improve the miscibility of sPS/iPP blends. DSC results show that in B30/iPP and sPS/iPP/B30 blends the onset temperature of the iPP-Tg region shifts toward the sPS-Tg, and, the sPS-Tg shifts inward slightly. The mechanical results show that under typical component the mechanical properties of sPS/iPP/B30 blends are better, unnotched izod impact strength is 42. 3 kJ/m^2, tensile strength 33.7 MPa.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第6期105-108,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(20574003
29634010)
关键词
间规聚苯乙烯
等规聚丙烯
力学性能
热性能
形态结构
sydiopolystyrene
isotactic polypropylene
mechanical properties
thermal behavior
phase morphology
