溶剂含量对UHMWPA6干纺初生丝及纤维的影响  

Impact of solvent content on UHMWPA6 dry-spinning nascent filament and fibers

作　　者：邓召良[1] 杨中开[2] 李小宁[2] 贾清秀[2] 付中玉[2] 

机构地区：[1]北京服装学院材料科学与工程学院,北京100029 [2]北京服装学院服装材料研究开发与评价北京市重点实验室,北京100029

出　　处：《天津工业大学学报》2010年第6期1-4,共4页Journal of Tiangong University

基　　金：国家自然科学基金项目(50803001);北京市科技新星计划项目(2008B06)

摘　　要：以UHMWPA6(相对粘度22.46)为原料,以甲酸为溶剂、CaCl2为络合剂,通过局部络合制备纺丝液,并经干法纺丝制备PA6纤维,研究溶剂含量不同的初生丝对所得纤维结构及性能的影响.结果表明,随着溶剂含量的增加,初生丝的回弹率提高,拉伸倍数呈现先升高后降低趋势;晶型产生明显变化,α晶型相对含量呈现出先减少后增加的趋势,试样的DSC曲线熔融峰呈现出相应的变化规律;溶剂质量分数为14.0%的初生丝所得纤维的模量和强度最佳.By using UHMWPA6 with relative viscosity 22.46 as raw materials,the partially complexed fibers of PA6 /CaCl2 are prepared in formic acid solution by dry spinning.The effects of solvent content on fiber structure and properties are studied.The results show that with the increasing of solvent content,the rebound degree of PA6 nascent filament increases,and the draw ratio increases first and then decreases.Crystalline structure significantly changes at the same time,and α crystalline structure content generally shows an increasing trend after the first reduction,the corresponding DSC curves of melting peak of samples shows the same variation.The optimum solvent content of fiber with the highest mechanical properties is 14.0%.

关 键 词：尼龙6 络合 干法纺丝 溶剂含量 

分 类 号：TS102.521[轻工技术与工程—纺织工程] TQ323.6[轻工技术与工程—纺织科学与工程]