摘要
采用自由基乳液聚合方法,通过苯乙烯-异戊二烯-丁二烯三元共聚合技术,设计合成了新型三元集成胶乳(SIBL)替代传统成本较高的聚丁二烯胶乳(PBL),制备丙烯腈-丁二烯-苯乙烯共聚物(ABS树脂)。将高温乳液法制备的SIBL进行附聚,再经过乳液接枝法制备高胶含量的ABS粉料,最后将ABS粉料与本体苯乙烯-丙烯腈共聚物(SAN树脂)掺混、熔融挤出、造粒,制备了低成本新型ABS树脂。考察3种单体配比对SIBL聚合动力学和粒径大小、分布、凝胶含量、玻璃化转变温度(Tg)和ABS树脂性能的影响。结果表明,采用自由基乳液聚合制备三元集成胶乳的方法可行,得到的增韧ABS树脂综合性能优异,悬臂梁缺口冲击强度由139J/m提高到233J/m。
Styrene-isoprene-butadiene copolymer latex （SIBL） was synthesized via tree radmal emulsion polymerization, which was used to replace high cost butadiene latex in the preparation of ABS. The synthesis of SIBL underwent four steps： （i） synthesis of styrene-isoprene-butadiene copolymer; （ii） the agglomeration of the copolymer; （iii） emulsion grafting polymerization and （iv） the melt blending of styrene-acryonitrile copolymer （SAN） and high rubber content ABS power. The effect of monomer ratio on the grafting efficiency, kinetics, polydispersity, gel content, and Tg was studied. The resulted ABS resin possessed excellent comprehensive properties, in which Izod impact strength increased from 139 to 233 J/m.
出处
《中国塑料》
CAS
CSCD
北大核心
2013年第8期27-31,共5页
China Plastics
关键词
集成胶乳
乳液共聚合
附聚
接枝共聚
丙烯腈-丁二烯-苯乙烯共聚物
性能
integrated latex
emulsion copolymerization
agglomeration emulsion grafting acrylo-ntrile-butadiene-styrene copolymer
performance
