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ABSTRACT: A phosphorus-containing epoxy resin, 6-H-dibenz[c,e][1,2] oxaphosphorin-6-[2,5-bis(oxiranylmethoxy)phenyl]-6-oxide (DOPO epoxy resin), was synthesized andcured with phenolic novolac (Ph Nov), 4,49-diaminodiphenylsulfone (DDS), or dicyandiamide(DICY). The reactivity of these three curing agents toward DOPO epoxy resinwas found in the order of DICY . DDS . Ph Nov. Thermal stability and the weight lossbehavior of the cured polymers were studied by TGA. The phosphorus-containing epoxyresin showed lower weight loss temperature and higher char yield than that of bisphenol-A based epoxy resin. The high char yields and limiting oxygen index (LOI) valuesas well as excellent UL-94 vertical burn test results of DOPO epoxy resin indicated theflame-retardant effectiveness of phosphorus-containing epoxy resins. The DOPO epoxyresin was investigated as a reactive flame-retardant additive in an electronic encapsulationapplication. Owing to the rigid structure of DOPO and the pendant P group, theresulting phosphorus-containing encapsulant exhibited better flame retardancy, higherglass transition temperature, and thermal stability than the regular encapsulantcontaining a brominated epoxy resin. High LOI value and UL-94 V-0 rating could beachieved with a phosphorus content of as low as 1.03% (comparable to bromine contentof 7.24%) in the cured epoxy, and no fume and toxic gas emission were observed. © 1999John Wiley & Sons, Inc. J Appl Polym Sci 73: 353–361, 1999
Key words: phosphorus-containing epoxy resin; 6-H-dibenz[c,e][1,2]oxaphosphorin-6-[2,5-bis(oxiranylmethoxy)phenyl]-6-oxide; phenolic novalac; 4,49-diaminodiphenylsulfone;
dicyandiamide; bisphenol-A; flame retardant; limiting oxygen index; UL-94V
test

摘要:磷-含有环氧树脂、六轰Dibenz[C、E][1,2]Oxaphosphorin-6-[2、5-国际清算银行(OXIRANYLMETHOXY)苯基]六氧化物(dopo环氧树脂),综合andcured与苯酚novolac(原电)4,49-Diaminodiphenylsulfone(国内发展服务)、dicyandiamide(dicy). 在这三个活性剂对治疗dopo发现一架resinwasdicy秩序. 国内发展服务. 十一月酸碱热稳定性好、重量lossbehavior聚合物的研究是澳洲. 磷的载Epoxyresin减肥气温较低,显示高收益率烧焦较耐-环氧树脂基础. 烧焦和限制产量高氧指数(皆)也很好Valuesas商标-94垂直燃烧测试结果表明dopo环氧树脂theflame--磷阻燃效果,含有环氧树脂. 在被调查的被动DopoEpoxyresin火燃烧电子encapsulationapplication添加剂. 由于结构僵化、链咀DopoP集团theresulting磷载出更好encapsulantretardancy火焰,Higherglass转变温度、热稳定性比正常的encapsulantcontaining溴化环氧树脂. 跟高价值和标志--V94-0度,可beachieved的磷含量低到1.03%(相当于7.24%溴contentof)治好了一架,也没有油烟排放的有毒气体和观察. ©1999john出版社父子有限公司工商局局长JApplPolym73:353-361,1999 关键字:磷载环氧树脂; 6-HDibenz[C、E]Oxaphosphorin[1,2]-6-[2、5-国际清算银行(OXIRANYLMETHOXY)苯基]六氧化物; 酚醛Novalac; 4,49-Diaminodiphenylsulfone; dicyandiamide. BisphenolA. 燃烧火焰; 氧指数限制; UL-94V 测试

摘要: phosphorus-containing 环氧树脂, 6-H-dibenz[c,e][1,2 ] oxaphosphorin 6 [2,5 bis(oxiranylmethoxy)phenyl] 6 氧化物(DOPO 环氧树脂), 被综合了andcured 以酚醛novolac (酸碱度11月), 4,49-diaminodiphenylsulfone (二氨基二苯基砜), 或dicyandiamide(DICY) 。这些三个治疗的代理反应性往DOPO 环氧resinwas 发现了按DICY 的顺序。二氨基二苯基砜。酸碱度11月。耐热性和被治疗的聚合物的重量lossbehavior 由TGA 学习了。 phosphorus-containing epoxyresin 比那bisphenol-A 根据了环氧树脂显示了更低的减重温度和更高的炭灰出产量。高炭灰出产量和限制氧气索引(LOI) valuesas 很好如同DOPO 环氧树脂的优秀UL-94 垂直的烧伤测试结果表明了phosphorus-containing 环氧树脂的theflame 阻化剂有效率。 DOPO epoxyresin 被调查了作为一个易反应的阻燃添加剂在一电子encapsulationapplication 。由于DOPO 和垂饰P 小组刚性结构, theresulting 的phosphorus-containing encapsulant 被陈列的更好的火焰retardancy, higherglass 转折温度, 并且耐热性比正规兵encapsulantcontaining 溴化的环氧树脂。高LOI 价值和UL-94 V-0 规定值能beachieved 以磷内容一样低象1.03% (可比较与溴contentof 7.24%) 在被治疗的环氧, 并且发烟和毒气放射未被观察。 . 1999John 威里& 儿子, 公司。 J Appl Polym Sci 73: 353.C361, 1999 年
关键词: phosphorus-containing 环氧树脂; 6-H-dibenz[c,e][1,2]oxaphosphorin 6 [2,5 bis(oxiranylmethoxy)phenyl] 6 氧化物; 酚醛novalac; 4,49-diaminodiphenylsulfone;
dicyandiamide; bisphenol-A; 阻燃; 限制氧气索引; UL-94V
测试

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