摘要
对不同分子量及其分布、不同门尼黏度和冷流性（挺性）的溶聚丁苯橡胶（SSBR）和LS5025—2在挤出机中的脱水过程和在密炼机中的混炼加工进行了研究。结果表明，降低中分子量聚合物的质量份数，提高大分子聚合物的质量份数，适当控制低聚物的质量份数，有利于改善溶聚丁苯橡胶分子量的分布及后续加工性能，适宜的SSBR挺性应大于83％、门尼黏度控制在48-62、分子量分布指数高于1．57是后续加工的保证。这样，混炼胶具有较好的力学性能，能满足高性能轮胎的要求。
In this paper, the dewatering performance in extruder and mixing process pertbrmance in internal mixer of different molecular weight and its distribution, mooney viscosity, cold current＇s SSBR and LS5025-2 were researched. The results indicated that it was benefited to improve the molecular weight distribution of SSBR and the extent machinable property by reduced the content of middle molecule polymer, improved the content of macromolecular, properly control the content of low molecule polymer. The mixing process performance could be ensured by controlled the cold current greater than 83%, mooney viscosity between 48-62 and molecular weight distribution no less than 1.57. The rubber compound could be better physical and mechanical properties, and it could meet the demands of high performance tyre.
出处
《世界橡胶工业》
2013年第7期28-29,30-35,共8页
World Rubber Industry
关键词
挤出
密炼
extruder and mixing process performance, internal mixer ,molecular weight and its distribution, cold current, content of high- middle -low molecule polymer
