解配位剂配比对CaCl_2/PA6干纺纤维结构和性能的影响  

Effect of decomplexing agent proportion on structure and properties of CaCl_2/PA6 dry-spun fiber

作　　者：杨中开[1,2] 彭文娟[3] 贾清秀[2] 李小宁[2] 高绪珊[1,2] 

机构地区：[1]四川大学轻纺与食品学院纺织研究所,四川成都610065 [2]服装材料研究开发与评价北京市重点实验室,北京100029 [3]北京碧水源科技股份有限公司,北京100097

出　　处：《合成纤维工业》2012年第2期1-4,共4页China Synthetic Fiber Industry

基　　金：国家自然科学基金项目(50803001);北京市自然基金项目(2092012)

摘　　要：以相对黏度19.44的PA6为原料、甲酸为溶剂、CaCl_2为配位剂,制备CaCl_2/PA6纺丝原液并进行干法纺丝,所得纤维经拉伸后于不同配比的解配位剂水/乙醇混合溶液中解配位处理,得到CaCl_2/PA6干纺纤维,并利用X射线分析、差示扫描量热法、扫描显微镜、红外光谱分析等手段对纤维进行表征。结果表明:随着混合溶液中乙醇含量的增加,解配位处理后纤维(002)晶面对应的呈α结晶形态的晶粒尺寸先减小后增加,而晶粒含量和纤维熔点则表现出先增加后降低的规律;解配位处理后纤维的-NH伸缩振动频率随乙醇含量的增加而增加,直至达到纯PA6纤维数值;解配位剂中乙醇体积分数40%～60%较佳。CaCl_2/PA6 spinning dope was prepared using PA6 with the realtive viscosity of 19.44 as raw material,formic acid as a solvent and CaCl_2 as a complexing agent and was dry-spun into fibers which was explored to decomplexation subsequent to drawing process using a decomplexing agent of water/ethanol blend solution at different ratios to prepare dry-spun CaCl_2/PA6 fiber. The obtained fiber was characterized by X-ray analysis,differential scanning calorimetry,scanning electron microscopy and infrared spectrometry.The results showed that the crystallite size ofα（002） reduced first and then grew andαcrystal content and the melting point of the fiber increased first and then decreased while raising the ethanol content in the blend solution;for the decomplexed fiber,the stretch vibration of—NH group shifted to higher frequency until equal to the value of pure PA6 fiber while raising the ethanol content;and the volume fraction of ethanol should be controlled as 40%- 60%based on the decomplexing agent.

关 键 词：聚己内酰胺纤维 氯化钙 干法纺丝 解配位剂 相对黏度 乙醇 

分 类 号：TQ342.11[化学工程—化纤工业]