阻滞阴离子聚合应用I.星形高抗冲聚苯乙烯的制备及其抗冲击性能.pdf

研究与开发
合成树脂及塑料,2015,32(4):
CHINA SYNTHETIC RESIN AND PLASTTCS
阻滞阴离子聚合应用
.星形高抗冲聚苯乙烯的制备及其抗冲击性能
王艳色,张月媛,吴家红,申凯华,李杨
(大连理工大学化工与环境生命学部高分子材料系,精细化工国家重点实验室
辽宁省高分子科学与工稈重点实验室,辽宁省大连市116024)
摘要:采用阻滞阴离子聚合方法,以白制多锂为引发剂,三异丁基铝为阻滯剂,制备了一系列含有星形高
抗冲苯乙烯-丁二烯(S-B)二元共聚物的星形高抗冲聚苯乙烯(S-HIPS),考察了聚合物的分子参数、单体配比、组
成分布、微观形态结构等对其抗冲击性能的影响。结果表明:S-HIPS由橡胶相屎形丁苯ーbー苯乙烯嵌段共聚物和树
脂相星形聚苯乙烯组成;随着橡胶相含量的增加和树脂相相对分子质量的增大,S-HIPS冲击强度显著提高;当橡胶
相质量分数在15.3%时,树脂相相对分子质量为82.6×10时,冲击强度高达33.0kJ/m2。
关键词:阻滯阴离子聚合星形高抗种聚苯乙烯抗冲击性能形态结构
中图分类号:TQ32.42文献标识码:B文章编号:1002-1396(2015)04-0001-05
Application of retarded anionic polymerization
L. Preparation of star high impact polystyrene and the impact properties
Wang Yanshai, Zhang Yeyuan, Wu Jiahong, Shen Kaihua, Li Yang
( State Key Laboratory of Fine Chemicals, Key Laboratory of Polymer Science and Engineering of Liaoning Province
Department of Polymer Science and Engineering, Faculty of Chemical, Environmental and Biological Science and Technology
Dalian University of Technology, Dalian 116024, China)
Abstract: A series of star high impact polystyrene(s-hips)with star impact styrene-butadiene
copolymers were synthesized based on retarded anionic polymerization by using self-made alkyl lithium as an
nitiator and triisobutyl aluminium as a retarder. The effects of polymer molecular parameter, monomer ratio
composition profiles, microstructure on the impact properties of the copolymers were investigated. The results
show thal S-HIPS is composed of rubber phase-star butadiene styrene copolymer-b-polystyrene and resin
ohase-star polystyrene(s-ps). The impact strength of the S-HIPS is increased significantly with the rise in the
content of rubber phase and the relative molecular mass of S-PS. The impact strength reaches 33.0 KJ/m when
the mass fraction of rubber phase is 15.3% and the relative molecular mass of S-PS is 82.6 10
My Keywords: retarded anionic polymerization; star high m pact polystyrene; impact resistance; morphology
strcture
高抗冲聚苯乙烯(HIPS)是由弹性体改性聚
苯乙烯制成的,传统的HIPS主要采用自由基聚合
收稿日期:2015-01-27;修回日期:2015-04-26
法生产,但存在单体转化不完全、残留单体多、结
作者简介:王艳色,女,1985年生,在读博士研究生,工
程师,现从事阻滯阴离子聚合理论与应用研究。E-mail
构不可控等问题,而且工艺繁琐,生产成本高"。
wangyanshai(@dlu.edu.cn;联系电话:15998500392
活性阴离子聚合法是实现聚合物分子结构设计
基金项目;基于阻滞阴离子聚合制备星形高抗沖丁二
最为精确、有效的方法,实现了从微观结构到序
烯异戊二烯/本乙烯树脂方法研究,中央高校基本科研业
务费(DUT13RC208)
列结构乃至聚集态结构、复杂拓扑结构的精确设
通信联系人。 liyang(@ Cdut.edu.en