接枝三聚氰胺粘胶纤维的合成及优化工艺  

Synthesis method and optimization process of carboxylated adhesive fiber grafted melamine

作　　者：苏昱 朱云阳 龙海 董丽楠 周小华[2] 王丹[2] Su Yu;Zhu Yun-yang;Long Hai;Dong Li-nan;Zhou Xiao-hua;Wang Dan(Chongqing Firesafety Technology Research Services LLC,Chongqing 401121,China;School of Chemical Engineeringof Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆消防安全技术研究服务有限责任公司,重庆401121 [2]重庆大学化工学院,重庆400044

出　　处：《化学研究与应用》2020年第8期1341-1348,共8页Chemical Research and Application

基　　金：一种新型无卤磷系阻燃剂的合成及其在粘胶纤维的应用研究(CQZJKY2017002)。

摘　　要：以表面羧基化粘胶纤维为基材,以三聚氰胺为阻燃功能基,二环己基碳二亚胺(DCC)为交联剂,合成接枝三聚氰胺粘胶纤维并表征其形貌、力学及热性能,探索其优化合成工艺。合成接枝三聚氰胺粘胶纤维的优化工艺为:DCC用量为羧基化粘胶纤维质量的0.6%,温度65℃,pH4.0,在此条件下反应2h,三聚氰胺对羧基化粘胶纤维的接枝率达到了5.57%。接枝三聚氰胺粘胶纤维其平均直径为4.643μm;其干态强度与干态断裂伸长率分别增加了20.99%、18.13%;接枝三聚氰胺粘胶纤维的LOI为29.2%,燃烧时间为26.9s,分别比粘胶纤维增加62.2%和76.97%,热释放量减少10.12%,有显著的阻燃效果。A novel flame retardant viscose fiber was synthesized that has melamine as the functional fragment and surface carboxylated viscose fiber as the base material and dicyclohexylcarbodiimide(DCC)as a crosslinking agent.Its appearance,mechanically and thermal properties were characterized,and the optimal process was explored.The optimal process for synthetic the carboxylated viscose fiber grafting melamine are that DCC dosag is 0.6%of the mass of carboxylated viscose fiber,the reaction temperature is 65℃,the pH is 4,and the reaction time is 2 h.At these conditions,the grafting ratio of melamine is reached 5.57%.Compared with viscose fiber the average diameter of melamine is 4.643μm,and the dry strength and dry elongation at break is increased by 20.99%and 18.13%,respectively;the resistance of grafted melamine the LOI of the viscose fiber is increased by 62.2%,the burning time is extended by 76.97%,and the heat release is reduced by 10.12%.

关 键 词：粘胶纤维 三聚氰胺 羧基化 接枝 极限氧指数 

分 类 号：O633.22[理学—高分子化学]