端氨基环三聚磷腈在阻燃环氧树脂中的应用  

Application of Terminal Amino Phosphazene in Flame Retardant Epoxy Resin

作　　者：徐建中[1] 王旭[1] 何立乾[1] 谢吉星[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《塑料科技》2014年第12期114-118,共5页Plastics Science and Technology

摘　　要：利用亲核取代反应和非均相催化氢转移还原法合成了六对氨基苯氧基环三磷腈(HANPCP),并用核磁共振氢谱进行了表征。在环氧树脂(EP)/间苯二胺体系中,加入HANPCP后可同时提高EP的力学性能和阻燃性能。在添加5份HANPCP时,与比空白样品相比,EP样品的拉伸强度提高了16.9%,冲击强度提高了19.3%,垂直燃烧性能最优,达UL 94V-1级。同时加入HANPCP后EP样品氧指数(OI)逐渐增大,在HANPCP含量为10份时,达到35.5%。热重红外联用仪及残炭SEM分析结果表明:HANPCP的阻燃机理主要是捕捉环氧脱水产物生成较稳定物质,同时生成的磷酸催化EP分解形成致密炭层,将难燃气体包裹在内部,阻止了氧气与EP的进一步接触。By using the nucleophilic substitution reaction and heterogeneous catalytic hydrogen transfer reduction, the hexakis（p-aminophenoxy） cyclotriphosphazene （HANPCP） was prepared and characterized with NMR. The addition of HANPCP to epoxy composite （EP） contributed to the promotion in terms of both flame retardant and mechanical properties. When the additive amount of HANPCP was 5%, the vertical combustion performance of EP samples was optimal, which could reach to UL 94V-1 level and tensile and impact strength increased by 16.9% and 19.3% than that of neat EP, respectively. The OI increased with the addition of HANPCP into EP sample, it would reach to 35.5% when the content of HANPCP was 10 phr. The analysis results of TG- FTIR and SEM indicate that the flame retardant mechanism of HANPCP is mainly to capture the epoxy dehydration product to generate more stable material, phosphoric acid as catalyst and decomposition of EP generated form compact carbon layer, will be difficult to burn gas wrapped inside, preventing further contact with oxygen and EP.

关 键 词：环氧树脂 六对氨基环三磷腈 阻燃 热分析 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]