高浓度超高相对分子质量聚乙烯冻胶流变行为的研究  

Study on Rheological Behavior of High-concentration Ultra High Molecular Weight Polyethylene Gel

作　　者：彭刚[1] 施佳炜[1] 叶敏[1] 江洪[1] 冯晨[1] 王依民[1,2] 

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维》2010年第11期10-14,共5页Synthetic Fiber in China

基　　金：上海市重点学科建设资助项目(项目编号B603)

摘　　要：应用Rosand RH7D型双料筒毛细管流变仪,研究了以白油为溶剂的高浓度超高相对分子质量聚乙烯(UHMWPE)冻胶的流变特性,以及冻胶浓度、温度对高浓度冻胶的流变曲线、非牛顿指数和结构黏度指数的影响。结果表明:高浓度UHMWPE冻胶属于宾汉流体,不同浓度的UHMWPE冻胶非牛顿指数随温度的升高先增大后减小,结构黏度指数随UHMWPE冻胶浓度及温度的增高而减小。The rheological behavior of high concentration UHMWPE gel was studied by a Rosand RH7D double-barrel capillary rheometer.The effects of gel concentration and temperature on rheological curve,non-Newtonian index and structural viscosity index of the gel were analyzed.The results indicated that high concentration UHMWPE gel belonged to Bingham fluid and all non-Newtonian index of different concentration gel showed a trend of first increase and then decrease with increasing gel temperature.The structural viscosity index decreased with increasing of UHMWPE gel concentration and increasing of gel temperature.

关 键 词：超高相对分子质量聚乙烯纤维 冻胶纺 高浓度 流变行为 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]