超高相对分子质量聚乙烯纤维的表面改性研究  

Study on the Surface Modification of Ultra-high Molecular Weight Polythylene Fiber

作　　者：邝金艳[1,2] 南建举[1,2] 于俊荣[1,2] 胡祖明[1,2] 陈蕾[1,2] 诸静[1,2] 

机构地区：[1]东华大学高性能纤维及制品教育部重点实验室,上海201620 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《高科技纤维与应用》2010年第5期51-55,共5页Hi-Tech Fiber and Application

摘　　要：选择乙烯-醋酸乙烯酯共聚物作为表面改性剂,将其溶解在二甲苯中制成复合萃取液,对超高相对分子质量聚乙烯(UHMWPE)冻胶纤维进行萃取,经干燥和超倍拉伸制得表面改性UHMWPE纤维。对改性前后纤维的表面化学结构、结晶性能、表面粘接性能和力学性能进行了比较。结果表明:加入表面改性剂后,纤维表面引入了极性基团,结晶形态不变,纤维与树脂的抗界面剪切强度大大增加,纤维的力学性能变化不大。Ethylene/vinyl acetate copolymer（EVA） was selected as surface modifiers and dissolved in xylene to make complex extraction solvent.The modified ultra-high molecular weight polyethylene（UHMWPE） fibers were made after the gel fiber extracted with the complex solvent and followed by drying and subsequent multi-step hot drawing.The surface chemical structure,the crystallizing properties,as well as interfacial adhesive properties and mechanical properties of the original and the modified UHMWPE fibers were compared with detailed measure-ments.The results showed that the polar groups were introduced on the surface of the UHMWPE fibers after modi-fication.The crystal habit was unchanged.The interfacial shear strength between the fiber and resin matrix was greatly improved,while the mechanical propertities of fibers were changed little.

关 键 词：超高相对分子质量聚乙烯纤维 表面改性 粘接强度 研究 

分 类 号：TQ342.61[化学工程—化纤工业]