摘要
以苯乙烯(St)、丁二烯(Bd)为单体,正丁基锂为引发剂,通过阴离子聚合合成了丙烯腈-丁二烯-苯乙烯(ABS)改性用丁苯嵌段共聚物(LBS)。探讨了聚合温度、加料工艺对产品分子结构及性能的影响规律。详细分析了相对分子质量及其分布、结合St质量分数、分子结构参数、St序列分布与产品性能的关系,探讨了影响产品生胶门尼粘度(MV)的关键因素。合成出了可用于连续本体ABS改性的LBS新产品,并进行了连续本体ABS改性性能评价实验。
The styrene-butadiene block copolymer as a modifier for ABS was synthesized with styrene and butadiene as monomers, butyl lithium as the initiator by the process of anionic polymerization. Influences of polymerization temperature and the feeding process on final product＇s molecular structure and properties were discussed. The relationship between molecular structure,relative molecular weight, styrene content and styrene-random sequence distribution and the performance of final products were studied in detail. The significant factors of effect on the products＇ Mooney viscosity were investigated in the process of discussion. A styrene-butadiene block copolymer used for modifying continuous bulk ABS was synthesized, and the performance evaluation experiments on modified ABS were also carried out.
出处
《弹性体》
CAS
2013年第2期12-16,共5页
China Elastomerics
基金
中国石油化工股份有限公司重点科研项目(410094)
关键词
丁苯两嵌段共聚物
微观结构
性能
门尼粘度
改性
styrene-butadiene block copolymer
microstructure
property
Mooney viscosity
modification
