阻燃剂六(4-酰腙基-2-甲氧基苯氧基)环三磷腈的合成及对ABS树脂的阻燃研究

Synthesis of fire retardancy hexakis(4- acylhydrazone-2-methoxyphenoxy)-cyclotriphosphazene and its application in fire retardancy of ABS resin

摘要:

以六氯环三磷腈为原料，与香兰醛发生亲核取代制得六(4-甲酰基-2-甲氧基苯氧基)环三聚磷腈（I），I再与取代酰肼反应得到相应的六(4-酰腙基-2-甲氧基苯氧基)环三磷腈类化合物（IIa-IIg），利用IR、1HNMR、13CNMR、ESI-MS和元素分析对化合物的结构进行了表征；并用该化合物（IIa-IIg）对ABS树脂进行阻燃处理，测试了其限氧指数和UL 94垂直燃烧性能。结果表明，所合成的化合物（IIa-IIg）对ABS树脂均具有显著地阻燃效果，化合物IIe、IIf阻燃效果最好。

Abstract:

Hexakis (4-formyl-2-methoxyphenoxy)-cyclotriphosphazene (I) was prepared by hexachlorocyclotriphosphazene and 4-hydroxy-3-methoxy-benzaldehyde. Hexakis (4-formyl -2 -methoxy-phenoxy)-cyclotriphosphazene (I) then reacted with substituted hydrazides to give hexakis(4- acylhydrazone-2-methoxyphenoxy)-cyclotriphosphazene ( IIa - IIg). The structures of IIa – IIg were confirmed by elementary analyses, IR, 1H NMR, 13C NMR, and MS spectra. Fire- resistant ABS resin were prepared by compound IIa – IIg and ABS resin, and the limited oxygen index (LOI) and UL 94 were tested. The results showed that they exhibited flame retardant effect, especially IIe, IIf exhibited a significant flame retardant effect.