聚酰胺表面改性三聚氰胺氰尿酸盐及其阻燃聚酰胺6研究  

Melamine Cyanurate with Surface Modified by Polyamide Resin and Its Flame Retardancy on Polyamide 6

作　　者：费国霞[1] 刘渊[1] 王琪[1] 汤洪梅[1] 

机构地区：[1]高分子材料工程国家重点实验室四川大学高分子研究所,四川成都610065

出　　处：《中国塑料》2005年第10期44-47,共4页China Plastics

基　　金：国家高技术研究发展计划(863项目)--高性能低成本工程塑料制备新技术(2002AAA333070)资助项目

摘　　要：以聚酰胺树脂的无机酸溶液为介质进行三聚氰胺-氰尿酸分子自组装合成三聚氰胺氰尿酸盐(MCA),并同时实现聚酰胺树脂对阻燃剂的表面包覆改性,集MCA的合成及表面改性于一体。该阻燃剂与目标阻燃树脂聚酰胺6 的相容性良好,阻燃剂粒子与聚酰胺6(PA6)树脂基体之间相界面基本消失。聚酰胺6中添加7％该阻燃剂即达到 UL94-1．6mm V0级别,成功解决了传统MCA阻燃PA6燃烧熔滴易引燃脱脂棉的问题,其极限氧指数高达34％,阻燃效率远高于传统MCA。材料力学性能良好,具有较好的市场应用前景。Melamine cyanurate （MCA） is an important nitrogen-containing flame retardant, particularly suitable for PA. However, the poor dispersion of MCA in PA matrix may result in a low flame retardan- cy. The extinguish time was long and the melt-drip of PA6 may ignite the absorbent cotton. In this paper, a self-assembled melamine-cyanurate was prepared in an inorganic acid solution of polyamide 6 and was simultaneously encapsulated with polyamide 6. The modified MCA had good compatibility with PA6 and enhanced the flame retardancy. PA6 samples containing 7 % modified MCA achieved a limit- ing oxygen index （LOI） of 34 % and an UL94-1.6 mm V0 rating. The melting dripping no longer ignited the absorbent cotton during the UL-94 flame test. The tensile and Izod notched impact strength of the sample were 61.3 MPa and 4.0 kJ/m^2, respectively.

关 键 词：三聚氰胺氰尿酸盐 阻燃剂 表面改性 聚酰胺6 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业]