聚苯乙烯无机浆体复合发泡聚氨酯保温板性能研究与工程应用探析

Research on the Performance of Polystyrene Inorganic Pulp Composite Foamed Polyurethane Insulation Board and Its Engineering Application

结合现阶段建筑节能技术应用现状和发展瓶颈,研发制备一种高效节能复合保温板材,以取代传统匀质保温材料如EPS板、XPS板、PU板和岩棉板等.通过可分散乳胶粉掺量对复合保温板材干密度、抗折强度、抗压强度等性能影响进行试验研究,同时采用电子显微镜测试观察其试样在微观结构状态下的表面形貌和闭孔率,对比分析不同材料界面复合方式对复合材料试件内部胶结性能的影响.试验研究和工程应用实践分析表明,密度等级为110 ~ 160 kg/m3的聚苯乙烯无机浆体复合发泡聚氨酯保温板,其当量导热系数约为0.035 ~0.041 W/(m·K),在设计厚度、密度和粘结固定等方面工程应用优势明显,为解决现阶段寒冷地区基于高节能率设计条件下的建筑外墙保温工程防火难题提供了可操作性探索.

This paper developed a high energy efficiency compound insulation board to replace the traditional homogeneous insulating materials such as EPS,XPS,PU and rock wool boards on the background of the present building energy efficiency technologies application and its developing bottleneck in China. An experiment was made of the influence of the dispersible latex powder admixture on the properties of the composite insulation board concerning its density,flexural strength and compressive strength,meanwhile an electron microscope test to observe the surface morphology and hole-closure of the sample under microscopic structure were also conducted,and a comparative analysis effect of different interfacial composite modes on internal cementation properties of composite materials specimens was made. The experimental research and the practical analysis on its engineering application show that polystyrene inorganic pulp composite foamed polyurethane insulation board with a density of 110 to160 kg/m3 and an equivalent thermal conductivity of0. 035 to 0. 041 W/( m·K) has more obvious engineering application advantages in design thickness,density and bond fixation compared with those of the traditional insulation materials. The newly-developed board meets the current requirements of both exterior wall thermal insulation and fire protection. And it also provides references for further operational exploration to solve the problem in designing high energy efficiency and fire protection walls in cold regions.