合成橡胶工业
閤成橡膠工業
합성상효공업
CHINA SYNTHETIC RUBBER INDUSTRY
2010年
2期
92-96
,共5页
苯乙烯%丁二烯%正丁基锂%结构调节剂%高苯乙烯橡胶%负离子溶液聚合
苯乙烯%丁二烯%正丁基鋰%結構調節劑%高苯乙烯橡膠%負離子溶液聚閤
분을희%정이희%정정기리%결구조절제%고분을희상효%부리자용액취합
styrene%butadiene%n-butyl lithium%structure regulator%high styrene rubber%anionic solution polymerization
以环己烷为溶剂、苯乙烯和丁二烯为单体、n-BuLi为引发剂、二乙二醇二甲醚(2 G)为结构调节剂,通过活性负离子溶液聚合合成了高苯乙烯橡胶,研究了引发剂种类、聚合温度、2 G/n-BuLi(摩尔比)、苯乙烯/丁二烯(质量比)、相对分子质量及其分布对共聚橡胶力学性能的影响.结果表明,当苯乙烯/丁二烯为60/40、2 G/n-BuLi为1.0时,在(65±2) ℃下可聚合得到力学性能较好的高苯乙烯橡胶,其数均分子量为15×10~4～20×10~4、分子量分布为1.40左右.
以環己烷為溶劑、苯乙烯和丁二烯為單體、n-BuLi為引髮劑、二乙二醇二甲醚(2 G)為結構調節劑,通過活性負離子溶液聚閤閤成瞭高苯乙烯橡膠,研究瞭引髮劑種類、聚閤溫度、2 G/n-BuLi(摩爾比)、苯乙烯/丁二烯(質量比)、相對分子質量及其分佈對共聚橡膠力學性能的影響.結果錶明,噹苯乙烯/丁二烯為60/40、2 G/n-BuLi為1.0時,在(65±2) ℃下可聚閤得到力學性能較好的高苯乙烯橡膠,其數均分子量為15×10~4～20×10~4、分子量分佈為1.40左右.
이배기완위용제、분을희화정이희위단체、n-BuLi위인발제、이을이순이갑미(2 G)위결구조절제,통과활성부리자용액취합합성료고분을희상효,연구료인발제충류、취합온도、2 G/n-BuLi(마이비)、분을희/정이희(질량비)、상대분자질량급기분포대공취상효역학성능적영향.결과표명,당분을희/정이희위60/40、2 G/n-BuLi위1.0시,재(65±2) ℃하가취합득도역학성능교호적고분을희상효,기수균분자량위15×10~4～20×10~4、분자량분포위1.40좌우.
High styrene rubber was synthesized by living anionic solution polymerization with cyclohexane as solvent, styrene(St) and butadiene(Bd) as monomers, n-BuLi as initiator, diethylene glycol dimethyl ether (2 G) as structure regulator. The effects of initiator spicies, polymerization temperature, 2 G/n-BuLi(mole ratio), St/Bd(mass ratio), relative molecular mass and its distribution on mechanical properties of high styrene rubber were studied. The results showed that the high styrene rubber with number-average molecular mass of 15×10~4-20×10~4, and its distribution of 1.40 could be obtained at polymerization temperature (65±2) ℃, St/Bd (mass ratio) 60/40, 2 G/n-BuLi(mole ratio) 1.0, and the high styrene rubber had better mechanical properties under this conditions.
