三聚氰胺改性脲醛树脂泡沫保温材料性能研究

Research on Properties of Melamine Modified Urea-formaldehyde Foam

脲醛树脂泡沫材料阻燃性能优异,作保温材料适用于外墙外保温系统。本文以提高脲醛树脂泡沫材料的硬度为出发点,采用三聚氰胺、脲醛树脂作为原料制备三聚氰胺改性脲醛树脂泡沫材料。采用万能力学仪器、显微镜、导热系数仪和热重-红外连用等仪器对三聚氰胺改性脲醛树脂泡沫材料的压缩强度、粉化率、泡孔形态、导热系数及氧指数进行探讨,并对其热分解特性进行深入分析。结果表明,三聚氰胺的引入可以有效的提高脲醛树脂泡沫材料的压缩强度,同时提高其耐热性及阻燃性。

Urea-formaldehyde foam materials have excellent flame retardant properties, which are suitable for external insulation systems as insulation materials. In order to improve the hardness of urea-formaldehyde foam, melamine modified urea- formaldehyde foam materials were prepared using melamine and urea-formaldehyde resin as raw materials. Effect of melamine on the mechanical properties, microstructure, fragility, limited oxygen index, thermal conductivity and thermal stability were studied by universal mechanical machine, microscopes, thermal conductivity analysis and thermal weight-infrared connection instruments. It was demonstrated that the melamine incorporated into the urea-formaldehyde foam increased the comprehension strength, thermal stability and the flame retardancy of urea-formaldehyde foam.