In order to study the building moisture absorption and release characteristics of com-mon insulation materials,several common insulation materials,such as EPS,were selected for research and moisture absorption and release experiments were conducted.Emphasis is placed on studying the moisture absorption and desorption process and the moisture absorption and desorption curve under 25℃ and 40℃ operating conditions,and testing the thermal conductivity during the moisture absorption and desorption process.The results show that the moisture hysteresis during the first stage of EPS dehu-midification is much smaller than that during the third stage.When EPS is dehumidified to 50％relative humidity in the first stage,its moisture hysteresis is 0.0014 kg/kg,and when EPS is dehumidified to 0.0027 kg/kg in the third stage.The hysteresis effect of EPS moisture absorption and release at 40℃ can be ignored.
关键词
EPS/保温材料/建筑/吸放湿特性/节能
Key words
EPS/insulation materials/architecture/moisture absorption and release characteris-tics/energy conservation
维普
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