摘要
研究了由不同动态硫化时间制备的氯化丁基橡胶 (CIIR)和聚丙烯酸乙酯 (PEA)共混物熔体的流变行为。结果表明,在不同的动态硫化时间里,CIIR/PEA共混物熔体的黏度均随着剪切速率的增加而先增后减,共混物熔体显示出膨胀性流动和假塑性流动相复合的复杂流变行为;动态硫化时间越长,熔体的最大黏度越小,动态硫化时间越短,熔体的最大黏度越大。在高剪切速率下,共混物熔体均具有适宜于模塑的良好流动性。
Rheological behaviors of melt chlorinated butyl rubber(CIIR)/polyethylacrylate(PEA) blends in different dynamically cured time were studied. The results indicated that, with the increase of shear rate, the viscosities of CIIR/PEA blends in various dynamically cured time all showed firstly an increase, and then a decrease. The melts of CIIR/PEA exhibited a rheological behavior of complexity flow consisted of the both rheological behaviors of a dilatability flow and a pseudoplastic flow. The blend melt from a longer dynamically cured time had lower maximum melt viscosity, whereas, the blend melt from a shorter dynamically cured time had higher maximum melt viscosity. At the higher shear rate, anyhow, the melts always possessed good rheological behaviors to suit for molding.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2005年第2期130-134,共5页
China Synthetic Rubber Industry
基金
国家自然科学基金资助项目(10276025)。
关键词
氯化丁基橡胶
聚丙烯酸乙酯
动态硫化
流变行为
chlorinated butyl rubber
polyethylacrylate
dynamical vulcanization
rheological behavior
