本体法ABS和乳液法ABS共混研究

Study on blends of bulk and emulsion polymerized ABS

将本体法丙烯腈-丁二烯-苯乙烯共聚物(ABS)和乳液法ABS共混,研究了共混体系的力学性能。结果表明:当本体法ABS质量分数为30%～50%时,共混体系的悬臂梁缺口冲击强度高于单组分的性能,与本体法ABS相比,增幅可达28%;拉伸强度和弯曲强度介于共混前2种ABS之间。动态力学研究表明,来自于2种工艺ABS中的苯乙烯-丙烯腈共聚物相容性良好。

Acrylonitrile-butadiene-styrene terpolymer（ABS） blends were prepared through blending bulk and emulsion polymerized ABS resins and the mechanical properties of the blends were investigated. The results indicate that the notched Izod impact strength of the blends is higher than those of either bulk polymerized ABS or emulsion polymerized ABS when the mass fraction of bulk polymerized ABS is 30%-50% and the impact strength of the blends increases by 28% compared with that of bulk polymerized ABS. The tensile and flexural strength is between those of the two ABS resins before blending. The dynamic mechanical analysis shows that the styrene-acrylonitrile copolymer （SAN） from bulk polymerized ABS is compatible with that from emulsion polymerized ABS.