任娟,李小娟,徐山青,姚理荣
REN Juan,LI Xiao-juan,XU Shan-qing,YAO Li-rong

• 1:南通大学纺织服装学院

摘要(Abstract)：

以二甲基乙酰胺(DMAc)、二甲基甲酰胺(DMF)、二甲基亚砜(DMSO)、1-甲基-2-吡咯烷酮(NMP)为溶剂,分别加入LiCl和CaCl_2制备溶解体系,研究了间位芳纶在这几种溶解体系中的溶解性能。再以H_2O-DMAc、H_2O-DMF、H_2O-DMSO、H_2O-NMP为凝固浴,研究了溶剂种类、芳纶溶液质量分数、离子浓度等对间位芳纶溶液的凝固性能的影响。结果显示:Li Cl-DMAc溶解体系具有更强的溶解性能;凝固值随凝固浴中凝固剂H_2O的含量的增加不断减小,而临界浓度几乎没有变化;随着凝固浴温度的增加,凝固值增大,临界浓度减小;凝固值随凝固浴中离子浓度的升高而增大,但临界质量分数则不断降低。另外,间位芳纶溶液的扩散系数随着凝固浴中H_2O的含量的减少不断减小,随着芳纶浓度的增加不断减小。
Using dimethyl acetamide(DMAc),dimethyl formamide(DMF),dimethyl sulfoxide(DMSO),1-methyl-2-pyrrolidone(NMP)as solvents,the Li Cl and Ca Cl2 were added to prepare solvent system,and thecoagulation properties of aramid fiber in them were invstigated.Then,H2O-DMAc,H2O-DMF,H2O-DMSO,H2O-NMP were used as coagulating bath respectively,the effect of solvents,the concentration of aramid so-lution,and the ion concentration on the coagulation properties of the aramid fiber were studied.The resultsshowed that the dissolution system of Li Cl-DMAc had a stronger dissolving capacity.The coagulation valuedecreased with the increasing of the content of H2 O in coagulation bath,while the critical concentrationbarely changed.With the increasing of the coagulation bath temperature,the coagulation value increasedand the critical concentration decreased.The coagulation value increased with the increasing of ion concen-tration in coagulation bath,but the critical concentration decreased.In addition,the diffusion coefficient ofmeta-aramid solution decreased with the decreasing of the content of H2 O in coagulation bath,and de-creased with the increasing of the conten of meta-aramid solution.

关键词(KeyWords)： 间位芳纶;黏度;导电率;凝固值;临界浓度;扩散系数
meta-aramid;viscosity;electric conductivity;coagulation value;critical concentration;diffusion coefficient

Abstract:

Keywords:

基金项目(Foundation): 江苏省青年基金项目(BK2012234);; 江苏省产学研联合创新资金——前瞻性联合研究项目(BK2014081-05);; 南通市自然科学基金项目(BK2012041);; 南通大学研究生科技创新计划项目(YKC14001)

作者(Author): 任娟,李小娟,徐山青,姚理荣
REN Juan,LI Xiao-juan,XU Shan-qing,YAO Li-rong

DOI: 10.16090/j.cnki.hcxw.2016.03.005

参考文献(References)：

• [1]杨福萍,李福才,刘璐萍.三大高性能纤维的发展及应用浅析[J].中国纤检,2012(3):78-80.
• [2]袁金慧,江棂,马家举.芳纶的应用和发展[J].高科技纤维与应用2005,30(4):27-30.
• [3]肖改丽,韩卿.用Li Cl/极性溶剂制备芳纶浆粕纤维溶液[J].中华纸业,2008,24:55-58.
• [4]张伟,周琪,姚理荣.静电纺间位芳纶纤维的制备及其性能[J].纺织学报,2011,32(2):11-17.
• [5]Yao L R,Lee C H,Kim J Y.Fabrication of electrospun meta-aramid nanofibers in different solvent system[J].Fibers and Polymers,2010,11(7):1 032-1 040.
• [6]Zhang S F,Zhang M Y,Li K C.Adhesion force between aramid fibr and aramid fibrid by AFM[J].Polymer Bulletin,2010,66(3):351-362.
• [7]Yao L R,Kim K,Kim J.Comparative study on fibrid formation model[J].Fibers and Polymers,2013,14(2):324-329.
• [8]Yao L R,Kim K,Kim J.Fabrication of meta-aramid fibrid by precipi tation[J].Fibers and Polymers,2012,13(3):277-281.
• [9]Yao L R,Zhao W T,Xu S Q,et al.The preparation of aramid pape and its properties[J].Advanced Material Research,2013,796:290-293.
• [10]兰建武,骞锡高,杨大令,等.聚芳醚砜酮溶液凝固相分离的研究[J].合成纤维,2001,30(6):7-9.
• [11]Liu P T,Jian X G.Coagulation phase separation of novel copolyam ides containing phthalazinone moiety[J].Journal of Macromolecular Sci ence,2008,47(3):384-391.
• [12]陆赵情,张美云,王志杰,等.芳纶纤维纸研究及进展[J].绝缘材料,2006,39(4):21-23.
• [13]黄志义,胡小芳,高香丽.芳纶浆粕/橡胶复合材料的应用研究进展[J].现代橡胶技术,2012,38(6):20-24.
• [14]任玉柱,刘力,吴卫东,等.高性能芳纶浆粕/HNBR复合材料的制备及性能研究[J].橡胶工业,2006,53(2):69-74.
• [15]金伟,俞金林,李军,等.聚砜酰胺原液凝固性能研究[J].合成纤维,2009,38(10):23-25.
• [16]Hou C,Liang Y,Wang C G.Determination of the diffusion coefficient of H2O in polyacrylonitrile fiber formation[J].Journal of Polymer Research,2005,12(1):49-52.
• [17]Zhang Y M,Tu X P,Liu W W,et al.Diffusion dynamics of ionic liquids during the coagulation of solution spinning for acrylic fibers[J].Polymer Engineering and Science,2008,48(1):184-190.
• [18]蔡良珍,孙忠华,李明珠,等.微波促进4-氟-1-酰基苯的胺化反应[J].复旦大学学报,2008,47(3):387-390.
• [19]Dong X G,Wang C G and Chen J.Study on the coagulation process of polyacrylonitrile nascent fibers during Wet-spinning[J].Polymer Bulletin,2007,58(5-6):1 005-1 012.6