摘要
研究了聚丙烯腈纤维的碱法水解工艺,并优化出作为型芯粘结剂的最佳水解工艺.采用对比试验的方法得出以下结论:随着反应时间的增加,聚丙烯腈纤维水解液的数均分子量,重均分子量和型芯的比抗拉强度均先增加后减小,当反应时间为7h时达到最大值.在这一反应时间,聚丙烯腈纤维与Na OH的用量比为1∶0.6,浴比(蒸馏水与纤维的比值)为8时,型芯的比抗拉强度达到最大值0.35 MPa,并且在这一条件下通过红外光谱图可以看出反应完全.聚丙烯腈纤维的碱法水解液多分散性在2左右,性能相对稳定.
The alkali hydrolysis process of PAN was studied in this paper, and the optimal hydrolysis technology was selected as bender of core. The following conclusions are drawn through the method of comparison test. Along with the extending of reaction time, Mn and Mw of PAN hydrolysate and the specific tensile strength of core increase and then decrease, and the maximum was reached when reaction time is 7h. In this case, the weight ratio of PAN to NaOH was 1 ： 0. 6 and the ratio of distilled water to fiber was 8, the maximum specific tensile strength of core was 0. 35, and it can be seen that the reaction is complete by IR spectrum in this condition. The dispersion of the alkali hydrolysis solution of PAN was around 2, and the performance was relatively stable.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2016年第1期18-21,共4页
Journal of Harbin University of Science and Technology
关键词
聚丙烯腈
型芯
力学性能
比抗拉强度
polyaerylonitrile
core
mechanical properties
specific tensile strength
