英语翻译INTRODUCTIONEpoxy resins have excellent moisture,solvent

英语翻译
INTRODUCTION
Epoxy resins have excellent moisture,solvent and chemical resistance,low shrinkage on cure,superior electrical and mechanical properties,and good adhesion to many substrates.The versatility in formulation also makes epoxy resins widely applicable industrially for surface coatings,adhesives,painting materials,pottings,composites,laminates,encapsulants for semiconductors,and insulating materials for electric devices,etc.1–4
However,the common epoxy systems cannot satisfy field applications that require high thermal and flame resistance.Considerable environmental attention and health restrictions have been considered in the last three decades in regard to controlling inherent flammability of common organic polymer by incorporation of fire-retardant additives.Several approaches for modification of the epoxy backbone to enhance the thermal properties of epoxy resins have been reported.5–8
Flame retardants such as tetrabromobisphenol A,phosphorus–halogen mixtures,ammonium phosphate,and organophosphorus compounds have been used to impart flame retardancy to epoxy resins.9–12 In a fire,halogens (i.e.,of bro mine and chlorine) produce problems of smoke and possibly enhanced toxicity,and corrosion.Organic phosphates have less tendency to cause these problems.Recently,organophosphorus compounds have demonstrated good ability as flame retardants for epoxy resins,and also have been found to generate less toxic gas and smoke than halogen-containing compounds.13–21 Flameretardant epoxy resins can be obtained by chemically bonding flame-retardant groups onto epoxy resins,and the permanent attachment of a flame retardant frequently leads to high efficiency in flame retardancy.17–18,22–23
In this study,a rigid phosphorus-containing reactive 2-(6-oxido-6-H-dibenzo[c,e][1,2] oxaphosphorin- 6-yl)-1,4-benzenediol (ODOPB) is converted to a phosphorus-containing epoxy resin,6-H-dibenz[c,e][1,2] oxaphosphorin-6-[2,5-bis- (oxiranylmethoxy)phenyl]-6-oxide (DOPO epoxy resin),which is expected to exhibit the required flame retardancy,less fumes,and higher thermal stability than the conventional flame-retardant epoxy resin systems containing tetrabromobispheno A (TBBA).

介绍
环氧基树脂树脂有优良的湿气,有偿付能力的和化学的抵抗,对许多基体的在治疗,上好的电和机械的财产和好附着上的低收缩.形成的多种变化为表面的涂料,黏性物,画材料,pottings ,合成物,积层塑料板也工业地使环氧基树脂树脂广泛可适用,encapsulants 对于半导体,而且为电的装置,等等使材料绝缘.1 – 4
然而,通常的环氧基树脂系统不能够使需要高的上升温暖气流和火焰抵抗的领域申请满意.相当多的环境注意和健康限制已经在关心的最后三十年内被考虑到被火- retardant 添加剂的结合控制通常有机聚合体的固有易燃的.提高环氧基树脂树脂的热财产的为环氧基树脂脊椎的修正一些方法已经被报告.5 – 8
火焰 retardants,像是 tetrabromobisphenol 一,磷–卤素混合,氨盐基磷酸盐和 organophosphorus 化合物已经用来传授对环氧基树脂树脂的火焰 retardancy .火的 9 – 12,卤素 (也就是,bro 我的和氯) 生产烟和可能可提高的毒性问题 ,和腐蚀.有机的磷酸盐让引起的比较少的趋向这些问题.最近,organophosphorus 化合物已经为环氧基树脂树脂示范如火焰 retardants 的好能力,以及已经被发现产生比较不有毒瓦斯和烟胜于包含卤素的化合物.13 – 21个 Flameretardant 环氧基树脂树脂能被用化学会接获得火焰- retardant 在环氧基树脂树脂之上聚集,而且火焰 retardant 的长备附着时常导致火焰 retardancy.17 – 18,22 – 23 的高效率
在这一项研究中,硬的包含磷的无功 2-(6-oxido-6-H-dibenzo[c,e][1,2] oxaphosphorin- 6-yl)-1,4-benzenediol(ODOPB) 被转换到一个包含磷的环氧基树脂树脂,6-H-dibenz[c,e][1,2] oxaphosphorin-6-[2,5- 双 (oxiranylmethoxy)本基]-6- 氧化物 (DOPO 环氧基树脂树脂),被期望展现必需的火焰 retardancy ,较少的臭气和比较高的热安定胜于包含 tetrabromobispheno 一 (TBBA) 的传统火焰- retardant 的环氧基树脂树脂系统.