泡沫碳-SiO_(2)气凝胶复材在室内环境设计中的应用研究

Research on the application of foam carbon-SiO_(2) aerogel composite in indoor environment design

通过溶胶/凝胶法制备了泡沫碳-SiO_(2)气凝胶复合材料应用于室内环境设计中的装饰材料,通过热重分析和傅里叶变换红外光谱研究泡沫碳材料的热解机理。结果表明,具有5.44 kg/m^(3)的密度的超轻性能的泡沫碳复合材料,可以起到起支撑材料的骨架的作用。泡沫碳-SiO_(2)气凝胶复合材料最大抗压强度约为1.0 MPa,可以满足室内环境装饰品强度设计应用。在室温下,测得的泡沫碳和泡沫碳-SiO_(2)气凝胶热导率分别为0.035、0.024 W/(m·K),填充在泡沫碳中的气凝胶可以显著降低复合材料的热导率,可以有效避免复合材料在室内环境中发生易燃现象。

The foam carbon-SiO_(2) aerogel composites were prepared by sol/gel method and applied to decorative materials in indoor environment design.The pyrolysis mechanism of the foam carbon materials was studied by thermogravimetric analysis and Fourier transform infrared spectroscopy.The results showed that the ultra-lightweight carbon foam composite with a density of 5.44 kg/m^(3) couldact as a skeleton to support the material.The maximum compressive strength of the carbon foam-SiO_(2) aerogel composite was approximately 1.0 MPa,which couldmeet the strength design application of interior environmental decorations.The thermal conductivity of the carbon foam and the carbon foam-SiO_(2) aerogel were measured to be 0.035 W/(m·K)and 0.024 W/(m·K)respectively at room temperature.Aerogels filled with carbon foam can significantly reduce the thermal conductivity of composite materials,which can effectively avoid the flammable phenomenon of composite materials in indoor environment.