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作 者:贾润萍[1] 魏路[1] 何新耀[1] 徐耀民[1] 黄茂松[1]
机构地区:[1]上海应用技术学院材料科学与工程学院,上海201418
出 处:《功能材料》2015年第B06期156-160,共5页Journal of Functional Materials
基 金:国家自然科学青年基金资助项目(21106083);上海市重点学科资助项目(J51504);校复合材料重点学科建设资助项目(10210Q 140001);上海教师专业发展工程资助项目(201456);上海市联盟计划资助项目(LM201449;LM201450)
摘 要:利用三聚氰胺和甲醛的羟甲基化反应得到液态多羟甲基三聚氰胺,并借助共起始剂引发其与环氧氯丙烷的阴离子开环聚合,得到三聚氰胺基结构阻燃聚醚多元醇(MNFRP)。FT-IR和1H NMR结果均证实MNFRP分子链段中含有三聚氰胺的特征三嗪环结构。进而将其作为基础树脂,制备出三聚氰胺基本征阻燃PU硬泡材料。SEM观察结果表明该泡沫具有致密的多边形泡孔结构。不使用阻燃剂其氧指数高达24.2%,较普通聚醚4110基PU硬泡(18.1%)有较大提高。In this paper,the hydroxymethylation reaction of melamine and formaldehyde was employed to syn-thesize liquid multi-methylolate melamine.At the presence of coinitiator,it was used to react with epoxy chlo-ropropane (ECH)through anionic ring-opening polymerization method,and thus get melamine-based structural flame retardant polyether polyol (MNFRP).Both of FT-IR and 1 H NMR spectra proved the presence of the characteristic peak for melamine triazine ring structure in MNFRP polyol.In order to study the flame retardant performance of MNFRP,melamine-based flame retardant polyurethane (PU)rigid foam was further prepared by using MNFRP as base resin.Scanning electron microscopy analysis (SEM)observations showed that the PU foam have uniform and dense polygon-like cell structure.Even without the use of flame retardant,its limiting oxygen index (LOI)can be reach to 24.2%,which was higher by 33.7% than that of traditional PU rigid foam (18.1%)fabricated by 41 10-based polyether.
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