硅烷交联改性对UHMWPE纤维蠕变性能的影响  

Effect of Silane Crosslinking on the Creep Behavior of UHMWPE Fibers

作　　者：张秀雨 于俊荣[1] 彭宏 王彦[1] 陈蕾[1] 诸静[1] 胡祖明[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620 [2]宏丽纤维研发有限公司,上海200031

出　　处：《东华大学学报（自然科学版）》2015年第1期1-5,27,共6页Journal of Donghua University(Natural Science)

基　　金：中央高校基本科研业务费专项资金资助项目(11D10625);国家重点基础研究发展计划资助项目(2011CB606103)

摘　　要：将热引发剂和硅烷交联剂引入萃取阶段的超高分子量聚乙烯(UHMWPE)纤维中,使其在纤维的热拉伸过程中引发接枝并在纤维内形成交联结构,以改善UHMWPE纤维的抗蠕变性能.研究了UHMWPE纤维对改性剂的吸附情况,测定了改性前后纤维的表面官能团分布、结晶性能、力学性能以及不同温度及应力水平下的蠕变行为.研究结果表明:改性剂被有效吸附在UHMWPE纤维内及其表面,拉伸后改性纤维内形成了交联结构;改性纤维的结晶度变大,对纤维的力学性能有轻微影响,改性后纤维的抗蠕变性能均得到较大程度的改善.Thermal initiator and silane crosslinking agent were introduced into ultra-high molecular weight polyethylene（UHMWPE）fibers in the process of extraction.Then,the grafting reactions were initiated during hot drawing process and crosslinking structures were formed to improve the creep resistance of UHMWPE fibers.The modifiers adsorption of UHMWPE fibers was studied,the surface functional groups,crystallization properties,mechanical properties and creep behavior of modified UHMWPE fibers under different temperature and different stress were measured.The results showed that the modifier could be effectively absorbed by UHMWPE fibers and crosslinking structures were formed after hot drawing.The crystallinity of modified fibers was increased,the mechanical properties of fibers was slightly decreased.The creep resistance of UHMWPE fibers was greatly improved after crosslinking modification.

关 键 词：超高分子量聚乙烯(UHMWPE)纤维 硅烷 交联改性 蠕变 

分 类 号：TQ34[化学工程—化纤工业]