英语翻译ABSTRACT:A phosphorus-containing epoxy resin,6-H-dibenz[

英语翻译
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