解络合时间对UHMWPA6纤维结构与性能的影响  

Effect of decomplexation time on structure and properties of UHMWPA6 fiber

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]服装材料研究开发与评价北京市重点实验室,北京100029

出　　处：《合成纤维工业》2011年第2期1-3,共3页China Synthetic Fiber Industry

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：以甲酸为溶剂、相对粘度18.85的超高相对分子质量聚己内酰胺(UHMWPA6)为溶质制备纺丝液,同时加入络合剂CaCl_2,通过干法纺丝制备UHMWPA6初生纤维;以水为解络合剂,对初生纤维初拉伸后进行解络合反应,研究了解络合时间对所得纤维的结构及性能的影响。结果表明:随着解络合时间的延长,UHMWPA6初拉伸纤维的断裂强度呈下降趋势,初始模量升高,呈现出单一的γ晶型,其熔点逐渐升高;当解络合时间大于30 min时,初拉伸纤维酰胺官能团的红外吸收峰与纯PA6纤维相近。As-spun ultrahigh-relative molecular mass polycaprolactam 6 （UHMWPA6） fiber was prepared by dry spinning process from the spinning solution using formic acid as the solvent and UHMWPA6 with the relative viscosity of 18.85 as the solute in presence of a complexing agent CaCl2. The decomplexation reaction of the as-spun fiber was conducted using water as the decomplexing agent subsequent to the initial drawing process. The effect of the decomplexation time on the structure and properties of the fiber was studied. The results showed that the breaking strength of the as-drawn UHMWPA6 fiber appeared a downward tendency, the initial modulus rose, the full T crystal formed and the melting point gradually rose while prolonging the decomplexation time. The as-drawn fiber had the similar infrared absorption peak of amide functional group to PA6 fiber when the decomplexation time was above 30 min.

关 键 词：超高相对分子质量 聚己内酰胺纤维 高强高模纤维 干法纺丝 络合剂 解络合 

分 类 号：TQ342.1[化学工程—化纤工业]