间位芳纶溶液凝固性能研究  

Study on Solidifiability of Meta-aramid in Coagulant

作　　者：姚理荣[1] 王坚 任娟[1] 徐山青[1] 

机构地区：[1]南通大学纺织服装学院,江苏南通226019 [2]南通醋酸纤维有限公司,江苏南通226007

出　　处：《南通大学学报（自然科学版）》2015年第1期55-59,共5页Journal of Nantong University(Natural Science Edition)　

基　　金：江苏省科技厅基础研究计划青年基金项目(BK2012234);南通市科技局应用研究计划项目(BK2012041);南通大学科研创新计划(YKC14001)

摘　　要：采用LiCl/DMAc溶解间位芳纶纤维,以H2O/DMAc为凝固浴,研究了凝固剂H2O与溶剂DMAc配比、LiCl质量分数和温度对间位芳纶溶液凝固性能的影响,并计算了凝固浴在芳纶溶液中的扩散系数.结果显示:凝固值随凝固浴中H2O含量的增大而逐渐减小,临界浓度则几乎没有变化;凝固值随芳纶溶液温度和LiCl质量分数的升高不断增大,而临界浓度则不断减小;凝固浴在芳纶溶液中的扩散系数随芳纶溶液质量分数的增大而减小,随凝固浴中凝固剂H2O含量的增大而增大.The solvent system LiCl/DMAc was used to dissolve meta-aramid fiber, and coagulant H2O/DMAc was used in this paper. The effects of weight proportion of H2O/DMAc was investigated, content of LiCl and temperature on solidifiability of meta-aramid in coagulant, and the diffusion coefficients were calculated. The results indicated that the coagulation value increases with the content of DMAc in coagulant decreasing, however, the critical concentration has almost no changes;the coagulation value increases with the content of LiCl in coagulant and temperature increasing, and the critical concentration decreases conversely;the diffusion coefficient of coagulant decreases with the concentration of aramid increasing, and increases with the content of H2O in coagulant increasing.

关 键 词：芳纶溶液 凝固浴 凝固值 临界浓度 扩散系数 

分 类 号：TS102.5[轻工技术与工程—纺织工程]