后处理对MF-PVA阻燃纤维结构与性能的影响  

Effect of post-treatment on structure and properties of MF-PVA flame-retardant fiber

作　　者：卢奎林[1] 施楣梧[2] 黄司琪[1] 叶光斗[1] 徐建军[1] 

机构地区：[1]四川大学高分子材料与工程国家重点实验室高分子科学与工程学院,四川成都610065 [2]总后勤部军需装备研究所,北京100010

出　　处：《合成纤维工业》2008年第1期26-29,共4页China Synthetic Fiber Industry

摘　　要：以聚乙烯醇(PVA)为成纤剂,与三聚氰胺甲醛(MF)溶液共混,湿法纺丝制得MF-PVA纤维。研究了后处理方式对MF-PVA纤维结构与性能的影响。结果表明:湿热处理有利于提高MF-PVA纤维的极限氧指数(LOI),其LOI最高达35;热定型处理后,纤维两相分离明显,纤维的力学性能、耐热水性能和结晶性能提高,其拉伸强度和水中软化点分别可达2.55 cN/dtex和104%;不同的后处理方式对纤维的热性能影响不大。Melamine formaldehyde-polyvinyl alcohol （MF-PVA） fiber was prepared via wet spinning process from the blend solution of PVA as a fiber-forming agent and MF solution. The effects of post-treatment technology on the structure and properties of MF-PVA fiber were studied. The results showed that wet heat treatment helped to improve the limiting oxygen index （ LOI ） of MF-PVA fiber which could be maximized as 35. After the heat treatment, the fiber showed obvious two-phase separation, mechanical properties, hot water resistance and crystallinity improved and tensile strength and softening point in water up to 2.55 cN/dtex and 104℃ respectively. The post-treatment technology had no great effect on the thermal property of the fiber.

关 键 词：聚乙烯醇纤维 三聚氰胺 甲醛 湿热处理 热定型 性能 

分 类 号：TQ342.41[化学工程—化纤工业]