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Flame retardant epoxy resins based on diglycidyl ether of isobutyl bis(hydroxypropyl)phosphine oxide

机译:基于异丁基双(羟丙基)氧化膦的二缩水甘油醚的阻燃环氧树脂

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Phosphorous-containing epoxy resins were prepared from diglycidyl ether of isobutyl bis(hydroxypropyl)phosphine oxide (IHPOGly) and diglycidyl ether of bisphenol A (DGEBA) by crosslinking with 2,4-diaminotoluene. Several IHPOGly/DGEBA molar ratios were used to obtain materials with different phosphorous content. Thermal, dynamomechanical, and flame retardant properties were evaluated and related with the phosphorous content. The weight loss rate of phosphorous-containing resins is lower than that of the phosphorous-free resin for the thermoxidative degradation. Char yields under nitrogen do not show significant differences among the phosphorous-containing resins and the phosphorous-free resin, while under air char yields increase with the phosphorous content. The presence of phosphorous increases the limiting oxygen index (LOI) values even when the phosphorous content is low, and no significant differences with the phosphorous content are observed. V-0 materials were obtained when the resins were tested for ignition resistance with the UL-94 test. (c) 2005 Wiley Periodicals, Inc.
机译:通过与2,4-二氨基甲苯交联,由异丁基双(羟丙基)膦氧化物(IHPOGly)的二缩水甘油醚和双酚A(DGEBA)的二缩水甘油醚制备含磷环氧树脂。使用几种IHPOGly / DGEBA摩尔比来获得具有不同磷含量的材料。评估了热,动力机械和阻燃性能,并将其与磷含量相关。含磷树脂的重量损失率低于用于热氧化降解的无磷树脂的损失率。氮下的焦炭收率在含磷树脂和无磷树脂之间没有显着差异,而在空气中,焦炭收率随磷含量的增加而增加。即使当磷含量低时,磷的存在也会增加极限氧指数(LOI)值,并且与磷含量没有显着差异。当通过UL-94测试测试树脂的耐燃性时,获得了V-0材料。 (c)2005年Wiley Periodicals,Inc.

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