TPP/TPPFR对ABS树脂成炭阻燃机理研究  

The Charring Flame-Retardant Mechanism of TPP/ TPPFR on ABS Resin

作　　者：陈磊[1] 陈力[1] 郭红[1] 蔡绪福[1] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065

出　　处：《塑料》2009年第2期1-4,共4页Plastics

基　　金：国家自然科学基金(20674052)

摘　　要：热塑性酚醛树脂(TPPFR)与磷酸三苯酯(TPP)复配作为无卤阻燃剂加入到ABS树脂中,极大地提高了ABS的阻燃性能。当ABS/TPPFR/TPP质量比为75/12.5/12.5时,阻燃体系极限氧指数可达44%,并且达到UL-94 V0级别。红外光谱与热失重分析表明:TPPFR和TPP在燃烧过程中发生了复杂的化学反应,进而形成网状结构,抑制了TPP挥发并通过芳构化提升体系成炭率,从而提高了体系对ABS的阻燃效果。The thermoplastic phenol-formaldehyde type resins （TPPFR） mixtured with triphenyl phosphate （TPP） as halogen-free flame retardants were found to be effective in enhancing the flame retardancy of acrylonitrile-butadiene-styrene resin（ABS）. When the mass percent of ABS/TPPFR/TPP composite was 75/12.5/12. 5, the composite＇ s LOI could reach 44 % and the result of UL-94 test was classified as V0. Some direct evidences from FTIR and TG experiments were presented that complicated chemical reactions were taken place between TPPFR and TPP during burning process. Then the system formed network to enhance the promotion of char forming and restrain the volatilization of TPP. So the compound of TPPFR/TPP increased the efficiency of flame retardancy on ABS.

关 键 词：热塑性酚醛树脂 磷酸三苯酯 ABS 无卤阻燃 极限氧指数 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] TQ314.248