微波发泡法制备的脲醛树脂泡沫塑料建筑用保温材料  

Preparation of Urea-formaldehyde Resin Foam Thermal Insulation by Microwave Foaming

作　　者：张显权[1] 周继源 谭海彦[1] Zhang Xianquan;Zhou Jiyuan;Tan Haiyan(Northeast Forestry University,Harbin 150040,P.R.China)

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2020年第8期123-128,共6页Journal of Northeast Forestry University

基　　金：黑龙省博士后基金启动项目(LBH-Q17003)。

摘　　要：选用微波发泡技术方法制备脲醛树脂泡沫塑料;采用电子显微镜(SEM)、热重分析仪-红外联用(TG-FTIR)、导热系数测定仪、极限氧指数测试仪等,对发泡材料的力学性能、热性能、表观形态、微观结构、燃烧性能进行系统表征,分析微波辐射功率、辐射时间对泡沫结构与性能的影响。结果表明:微波发泡法制备的脲醛树脂泡沫保温材料,在微波功率为输出功率的100%时综合性能较好,力学性能达243 kPa,达到建筑保温材料的要求;从热性能看,脲醛树脂泡沫材料的主要质量损失的温度为272℃,最终的残余量为18.6%,热稳定性较好;微观结构表征表明,泡沫材料的泡孔结构较均匀;氧指数性能表征显示,制备的发泡材料具有难燃性能,满足建筑材料B1级别要求。Microwave foaming technology was used to prepare urea-formaldehyde resin foam. The mechanical properties, thermal properties, apparent morphology, microstructure and combustion properties of the foamed materials were investigated by electron microscopy (SEM), thermogravimetric (TG-FTIR), thermal conductivity tester and limit oxygen index tester, and analyze the influence of microwave radiation power and radiation time on foam structure and performance. The urea foaming resin prepared by microwave foaming method has good comprehensive performance when the foaming power is 100% of the output power, and its mechanical properties are 243 kPa, which meets the requirement of building insulation materials. From the perspective of thermal performance, the temperature of the main mass loss of urea-formaldehyde resin foam is 272 ℃, the final residual amount is 18.6%, which reflects its thermal stability is good. Microstructure characterization shows that the cell structure of the foam is uniform. The oxygen index performance characterization indicates that the prepared foamed material has flame retardant properties and meets the requirements of building materials B1 level.

关 键 词：微波发泡 脲醛树脂泡沫塑料 保温材料 建筑材料 

分 类 号：TU55[建筑科学—建筑技术科学] TQ328[化学工程—合成树脂塑料工业]