摘要
采用悬浮聚合法合成了不同分子量、不同甲基丙烯酸 (MAA)含量的系列苯乙烯 -甲基丙烯酸共聚物 (PSMAA)。用 DSC、拉伸、冲击、熔体流变试验等对共聚物的力学和加工性能进行了研究 ,结果表明 :(1)随着 MAA含量的增加 ,PSMAA共聚物的 Tg 升高 ,热稳定性增加。(2 )共聚物的拉伸、冲击强度均随MAA含量和分子量的增加而升高。(3) MAA含量在 8mol%以内 ,分子量 (Mn)在 2 0万左右 ;MAA含量在 18mol%以内 ,Mn 在 10万左右的
Styrene methyl acrylic acid copolymers (PSMAA) were synthesized by a suspension copolymerization with the different molecular weight and the content of methyl acrylic acid. The mechanical and the processing properties of PSM(AA copolymers were studied by tensile tester, impact testing machine and torque rheometer. The results show that: (1) both the glass transition temperature and the thermal stability increase with the increase of MAA content in PSMAA copolymer. (2)the tensile and impact strength enhance with the increase of either the MAA content or the molecular weight. (3) The processing properties of PSMAA copolymers are better, either molecular weight ( n) is in range of 1×10 5 and MAA content is 18 mol% or 2×10 5 molecular weight and 8 mol% MAA content.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2001年第6期67-70,共4页
Polymer Materials Science & Engineering
关键词
苯乙烯-甲基丙烯酸共聚物
悬浮聚合
力学性能
加工性能
合成
styrene methylacrylic acid copolymer
suspension polymerization
mechanical property
processing property
