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.
出处
《功能材料》
EI
CAS
CSCD
北大核心
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)
关键词
三聚氰胺
结构阻燃
聚醚多元醇
合成
性能
melamine
structural flame retardant
polyether polyol
synthesis
performance
