新型磷硅阻燃剂的合成及其对PC/ABS的阻燃研究  

SYNTHESIS OF NOVEL FLAME-RETARDANT CONTAINING PHOSPHORUS AND SILICON AND ITS FLAME-RETARDANT EFFECT ON PC/ABS

作　　者：闵峰[1] 韦平[1] 江平开[1] 疏引[1] 吴发盛[1] 

机构地区：[1]上海交通大学化学化工学院,上海200240

出　　处：《工程塑料应用》2008年第4期5-8,共4页Engineering Plastics Application

基　　金：上海市重点学科建设资助项目(B202)

摘　　要：以三氯氧磷、季戊四醇和二乙氧基氨丙基硅甲烷为原料合成了一种磷硅阻燃剂PN,并通过红外光谱和核磁共振测定了其结构。将PN与聚碳酸酯/(丙烯腈/丁二烯/苯乙烯)共聚物(PC/ABS)体系共混后研究了PN对PC/ABS体系热降解性能、阻燃性能和残炭形貌的影响。结果表明,PN能改善PC/ABS体系的高温热稳定性和残炭量,在燃烧时形成内表面发泡、外表面致密连续的膨胀炭层;且能提高PC/ABS体系的阻燃性能,当PN的添加量从0增加到30份时,PC/ABS共混材料的极限氧指数由21%增加到29%;当PN添加量超过20份后,共混材料的阻燃等级能够达到UL94V-1级。A novel flame-retardant poly （spirocyclic pentraeythritol bisphosphorate disphosphoryl chloride N-aminopropyle methyl diethoxy silane） （PN） with a structure containing phosphorus and silicon was synthesized from pentaerythritol, phosphorus oxychloride and N-arninopropyle methyl diethoxy silane, and its structure was characterized by FTIR, ^1HNMR and ^31PNMR. The effect of PN on the thermal degradation behavior, flame-retardancy and char morphology of PC/ABS was investigated after blending PN with PC/ ABS. Results showed that PN improved the high temperature thermal stability and residue char amount of PC/ABS, and made a good contribution to the forming of a char layer with an inner surface as a＂ foam＂ structure and a continuous dense outer surface; PN improved the flame retardancy of PC/ABS obviously. With the PN addition level increased from 0% to 30% , the LOI of PC/ABS/PN increased from 21% to 29%. And it passed UL 94 V - 1 testing at tile addition level of more than 20%.

关 键 词：阻燃剂 合成 热降解 硅氧烷 聚碳酸酯 (丙烯腈/丁二烯/苯乙烯)共聚物 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业] TQ174.759