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机构地区:[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042
出 处:《橡胶工业》2011年第8期466-470,共5页China Rubber Industry
基 金:国家自然科学基金资助项目(50603009)
摘 要:应用RPA2000橡胶加工分析仪研究钼系支化高乙烯基聚丁二烯橡胶(b-HVPBR)的动态力学性能,并与BR、乳聚丁苯橡胶(ESBR)和溶聚丁苯橡胶(SSBR)进行对比。结果表明:在试验频率范围内,b-HVPBR(低频下)的剪切储能模量(G′)大于BR,SSBR和ESBR,损耗模量(G″)和损耗因子(tanδ)小于BR,SSBR和ESBR,复数粘度(η*)呈现假塑性流体的特征;在试验温度范围内,b-HVPBR的G′大于BR,SSBR和ESBR,tanδ值小于BR,SSBR和ESBR;在试验应变范围内,b-HVPBR的G′大于BR,SSBR和ESBR,tanδ值小于BR,SSBR和ESBR。The dynamic properties of molybdenum-catalyzed branched HVPBR(b-HVPBR) were studied by using rubber processing analyzer(RPA2000),and compared with those of BR,ESBR and SSBR.The results showed that,in the range of experimental frequency,the storage modulus(G′) of b-HVPBR was the highest under low frequency,the loss modulus(G″) and loss factor(tanδ) were smaller than those of BR,ESBR and SSBR,respectively,and their complex viscosity(η*) showed the same trait with that of pseudoplastic fluid.In the range of experimental temperature or strain,the G′ of b-HVPBR was higher than that of BR,ESBR and SSBR,and the tanδ was smaller.
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