摘要
以2-(乙氧甲基)四氢呋喃为结构调节剂,采用负离子聚合法合成了耐低温溶聚丁苯橡胶(SSBR),考察了2-(乙氧甲基)四氢呋喃用量和反应温度对SSBR微观结构的影响,研究了SSBR的物理机械性能和动态力学性能,并与市售SSBR产品进行了对比。结果表明,该调节剂具有温度不敏感性,当反应温度为60℃、2-(乙氧甲基)四氢呋喃质量分数为140×10-6时,所制得SSBR的结合苯乙烯与1,2-结构质量分数分别为15%和50%,苯乙烯在分子链上的无规度达到100%,玻璃化转变温度为-47℃;与市售SSBR产品相比,所制得SSBR的回弹性较好,永久变形小,耐磨性能良好,耐老化性能略优,滚动阻力较低。
The solution polymerized styrene-buta- diene rubber （SSBR） with low temperature resist- ance was synthesized by anionic polymerization with 2-（ethoxymethyl） oxolaue as structural modifier, effects of 2-（ethoxymethyl） oxolane amount and temperature on microstructure of SSBR were investi- gated, the mechanical properties and dynamic me- chanical properties of SSBR were studied and com- pared with commercial SSBR. The results showed that 2-（ethoxymethyl） oxolane was temperature-in- sensitive for mircostructure modification of SSBR. When mass fraction of 2-（ethoxymethyl） oxolane was 140 ×10^-6 and temperature was 60 ℃, themass fraction of 1,2-unit of polybutadiene and poly- styrene of SSBR were 50% and 15%, respectively, the randomness degree of polystyrene was 100% , and the glass transition temperature was -47 ℃. Compared with commercial. SSBR, the obtained SSBR had better resilience, wear resistance and ag- ing resistance, lower permanent set and rolling re- sistance.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2016年第3期173-177,共5页
China Synthetic Rubber Industry
关键词
2-(乙氧甲基)四氢呋喃
溶聚丁苯橡胶
微观结构
耐低温性能
物理机械性能
动态力学性能
2-（ethoxymethyl） oxolane
solutionpolymerized styrene-butadiene rubber
microstruc-ture
low temperature resistance
mechanical prop-erty
dynamic mechanical property
作者简介
作者简介：崔彦君（1985-），女，甘肃张掖人，博士，工程师。主要从事合成橡胶方面的研究，已发表论文3篇（SCI收录），国际会议论文2篇。
