摘要
以芳烃含量约３８％的油品作填充油，对用膦酸酯（２－乙基己基膦酸单２－乙基己酯）稀土催化体系合成的高顺－１，４－聚丁二烯橡胶的充油效应及充油橡胶的性能进行了研究。结果表明，随着充油量的增加，充油生胶的可塑性增大，混炼行为和流动性得以改善，而屈服强度、拉伸强度和扯断伸长率均下降；充油硫化胶的３００％定伸应力、硬度、撕裂强度、回弹性、生热和磨耗等均降低，永久变形与抗湿滑性增加，拉伸强度大约在充油量为７０份时出现极大值。综合考虑，充油量以６０～７０份为宜。
The oil-extented effect and the properties of the oil-extended rubber of high cis-1.4-polybutadiene prepared with rare earth phosphonate(2-ethylhexyl phosphonate mono-2-ethylhexyl ester)catalyst system were studied with the oil of about 38% aromatic content as extender.The results showed that with increasing the oil loading,the plasticity of the oil-extended rubber increased,the yield and ten sile strength and elongation at bread decreasecd,thus improved the mixing behavior and flowability. The modulus at 300% elongation,hardness,tear strength,resilience,heat build-up and abrasiom of the oil-extended vulcanizaties all derdased,but th set and wet skid resistance incrseased with incresing the oil loading.There was a peak value at 70 phr of oil loading for their tensile strength.It was suitable in the oil loading of 60～70 phr.
出处
《合成橡胶工业》
CSCD
北大核心
1994年第2期98-101,共4页
China Synthetic Rubber Industry
基金
国家自然科学基金
关键词
膦酸酯
稀土催化剂
顺丁橡胶
充油
phosphate rare earth catalyst
high cis-1
4-polybutadiene
oil-extended rubber
vulcanizate
processability
mechanical property.
