摘要
通过二苯氧基磷酰氯和间苯二甲胺反应,合成了(N,N'-[1,3-对苯二亚甲基(亚甲基)]-二氨基磷酸)-P,P,P',P'-四苯基酯)(PNBE)磷氮阻燃剂。利用元素分析(EA)、傅里叶变换红外光谱(FTIR)、质谱(MS)、核磁共振氢谱(~1H—NMR)、核磁共振碳谱(^(13)C-NMR)确定了目标化合物的结构。利用热失重分析、锥形量热仪、极限氧指数仪以及扫描电子显微镜等研究了PNBE磷氮阻燃剂对环氧树脂的阻燃性能,并初步研究了其机理。结果表明,自制PNBE阻燃剂对环氧树脂具有较好的阻燃性,25%添加量可使其极限氧指数达到31.8%,阻燃级别达到V-0级,其阻燃机理为凝固相和气相协同阻燃机理,以凝固相为主。
N, N＇-[1,3-phenylenebis （methylene）] his-P, P, P＇, P＇-tetraphenyl ester （PNBE） was synthesized and characterized by elemental analysis （EA）, mass spectra （MS）, infrared spectroscopy （IR）, and nuclear magnetic resonance （NMR）. PNBE was introduced into epoxy resins as a flame retardant by solution casting. PNBE of 5 % could increase the limit oxygen index to 31.8 %, and the flame retardant grade was V-0 level. It worked in both condensed and gas phases but mainly followed the condensed phase mechanism.
出处
《中国塑料》
CAS
CSCD
北大核心
2015年第11期97-101,共5页
China Plastics
关键词
阻燃剂
阻燃
环氧树脂
flame retardant
flame retardancy
epoxy resin
