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导热系数是建筑保温材料的基本物性参数,也是建筑热工与节能设计的重要指标。然而如何确定导热系数的环境影响因素及其影响程度,目前仍然缺乏相关研究。本研究明确了温度、湿度和受力因素是保温材料导热系数在建筑应用中发生变化的可能影响因素,给出了导热系数在温度、湿度和力学三种单因素影响作用下的试验验证设计方案,并针对具有代表性的三种保温材料:EPS(有机保温材料)、岩棉(松散纤维状材料)和泡沫玻璃(无机保温材料)进行了模拟试验研究以验证方案设计,为最终确定导热系数的环境影响因素、程度乃至热工规范修编中导热系数修正系数的确定奠定了方法基础。
Thermal conductivity is the basic physical properties of building insulation materials, building thermal and energy-saving design is an important indicator. However, how to determine the environmental factors affecting the thermal conductivity and the degree of its influence, there is still a lack of relevant research. The research identified that the factors of temperature, humidity and force are the possible influencing factors of the thermal conductivity of thermal insulation materials in architectural applications. The experimental verification design scheme of thermal conductivity under the influence of three single factors of temperature, humidity and mechanics is given , And simulation tests were conducted on three representative thermal insulation materials, EPS (organic thermal insulation material), rockwool (loose fibrous material) and foam glass (inorganic thermal insulation material) to verify the scheme design. In order to finally determine the thermal conductivity Environmental factors, the extent and even thermal engineering standards in the thermal conductivity coefficient correction coefficient laid the foundation for the method.