摘要
从聚合物的结构一性能关系入手，分析了影响ＳＢＲ抗湿滑性和滚动阻力的结构因素。提出，减少硫化胶中“自由末端”数目，可使滚动阻力明显下降；同时，为克服由此而造成的抗湿滑性下降，可适当提高聚了二烯部分的１，２－结构含量。以此分析为基础，应用阴离子聚合方法，多官能团锂为引发剂，环己烷为溶剂，极性添加剂为无规化剂和结构调节剂，合成出Ｓｔ％＝５～２５％，Ｂｖ％＝３５～６５％，Ｍｎ＝２３～３３万，Ｍｗ／Ｍｎ＝１．８～６．８的节能型溶聚丁苯，并且对影响ＳＢＲ链结构的各种因素进行了研究。
The influence of structure fsctors on rolling resistance and wet skid resistance of S-SBR wasanalyzed from the relationship between copolymer structure and its properties. The results showedthat the rolling resistance can be decreased by decreasing the number of flee ends in vulcanizedrubber. In order to improve the wet skid resistance the Bv% can be increased. For analysismentioned above a new type of save-energy S-SBR was synthesized by using POlyfunctional lithiumas initiator, cyclohexane as solvent and by adding polar additive to control the structure ofcopolymer chain. The structures of S-SBR were as follows: St = 5～ 25 %, Bv= 35～ 65 %, Mn= 230000～ 330000, Mw/Mn = 1. 8～ 6. 8. The influences upon chain structure were also studied.
出处
《弹性体》
CAS
1994年第4期15-19,共5页
China Elastomerics
关键词
高分子
分子设计
丁苯橡胶
共聚物
溶液聚合
Molecular design of macromolecular
Solution polymerization of styrene butadiene
Synthesis
Chain structure
