不同种类阻燃剂对涂层用环氧树脂的阻燃效率研究

摘要

The aim of this work is to study the efficiency of different classes of flame retardants for epoxy resins designed for coating applications.The thermal stability and fire retardant properties of the amine (JeffamineT403) cured epoxy resin,diglycidyl ether of bisphenol-A,have been studied using thermogravimetric analysis (TGA) under nitrogen atmosphere and cone calorimetry.In this study,an extensive series of flame retarded epoxy resins were prepared with commercially available flame retardant additives,including halogens,phosphorus,minerals,melamine derivative and intumescent additives.The range of flame retardant materials used in epoxy formulations of commercial interest was investigated.The amount of FR additives is maintained at 15 ％ (except mineral fillers 30 ％,mass fraction) to avoid impairment of the mechanical properties of epoxy resin.%主要研究了不同种类阻燃剂对涂层用环氧树脂的阻燃效率的影响.该环氧树脂由双酚A的二环氧丙醚经胺类固化剂固化而得,用氮气氛下的热重分析(TGA)和锥形量热研究了其热稳定性和阻燃性.本研究中,所用的阻燃剂都是商业化应用的阻燃添加剂,包括卤素、磷、无机物、三聚氰胺衍生物和膨胀型添加剂.研究所选用的阻燃环氧体系都具有较高的商业化应用价值.研究发现,固化剂的种类对环氧树脂的阻燃性有较大影响,在阻燃和抑烟方面,溴系阻燃剂比氯系阻燃剂更有效.亚磷酸盐对于环氧树脂具有很好的阻燃作用.氢氧化镁、硼酸锌比氢氧化铝的阻燃效率高.三聚氰胺化合物能够赋予环氧树脂较好的阻燃和抑烟性,此外膨胀型添加剂也是一种有效的阻燃剂.