两种坡缕石基复合调湿材料的热湿性能测定与比较  

Tests and Comparison of Hygrotherml Properties of Two Kinds of Palygorskite-Based Composite Humidity Control Materials

作　　者：冯琳 赵蕾[1] 亓家伟 王飞[1] FENG Lin;ZHAO Lei;QI Jiawei;WANG Fei(School of Building Services Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学建筑设备科学与工程学院,陕西西安710055

出　　处：《建筑材料学报》2023年第8期931-938,共8页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51878535)。

摘　　要：鉴于调湿材料的热湿物性决定着其热湿传递行为,研制了2种新型坡缕石基复合调湿材料——坡缕石基亚麻纤维材料(FP)和坡缕石基木质纤维材料(WFP),全面测量了这2种复合调湿材料的水蒸气渗透系数、等温吸附曲线和湿扩散率等关系到其吸放湿能力和热湿传递特征的物性参数,探究了材料厚度和相对湿度上下限对复合调湿材料湿缓冲值的影响.结果表明:材料越厚,相对湿度区间越高,复合调湿材料的吸放湿能力就越强;厚度为2.5 cm的FP和WFP的湿缓冲值分别达到2.83、3.11 g/(m^(2)·%).In view of the fact that the hygrotherml properties of humidity control materials determine their heat and moisture transfer behavior,two new palygorskite‑based composite humidity control materials,namely palygorskite based flax fiber material(FP)and palygorskite based wood fiber material(WFP)were developed.The water vapor permeability coefficient,isothermal adsorption curve,moisture diffusivity and other physical parameters related to the moisture absorption and release capacity and heat and humidity transfer characteristics of two materials were measured.The influence of humidity control material thickness and upper and lower limits of relative humidity on the moisture buffer value were explored.The results show that the thicker the composite humidity control material,the higher the relative humidity range,the stronger its moisture absorption and desorption ability.The moisture buffer values of FP and WFP with a thickness of 2.5 cm reach 2.83,3.11 g/(m^(2)·%),respectively.

关 键 词：复合调湿材料 热湿性能 湿缓冲能力 湿渗透深度 

分 类 号：TU599[建筑科学—建筑技术科学]