超高相对分子质量聚乙烯冻胶的流变行为研究  

Rheological study on ultrahigh-molecular weight polyethylene gel

作　　者：梁琳俐[1] 王新鹏[2] 王依民[2] 王燕萍[2] 

机构地区：[1]东华大学材料科学与工程学院,上海200051 [2]东华大学纤维改性国家重点实验室,上海200051

出　　处：《合成纤维工业》2005年第2期27-29,共3页China Synthetic Fiber Industry

摘　　要：研究了超高相对分子质量聚乙烯(UHMWPE)冻胶的流变特性,以及温度、相对分子质量对冻胶 的lgη_a-lgγ流动曲线、非牛顿指数和结构粘度指数的影响。结果表明:UHMWPE冻胶属于宾汉流体,具 有明显的非牛顿性,结构粘度指数随UHMWPE相对分子质量的增大而增大,随冻胶温度的升高而降低。The rheological behavior of ultrahigh-molecular weight polyethylene (UHMWPE) gel was studied, as were the effects of temperature and molecular weight on lgηa -lgγ flow curve, non-Newtonian index and structural viscosity index of the gel. The results showed that UHMWPE gel belonged to Bingham fluid and showed distinct non-Newtonian behavior. The structural viscosity index was increased while increasing UHMWPE molecular weight and was decreased while increasing gel temperature.

关 键 词：超高相对分子质量聚乙烯 冻胶 行为研究 结构粘度指数 UHMWPE 流变特性 流动曲线 宾汉流体 非牛顿性 指数和 温度 增大 

分 类 号：O632.1[理学—高分子化学]