Synthesis and analysis of new humidity-controlling composite materials
来源期刊：International Journal of Minerals Metallurgy and Materials2017年第5期
论文作者：Jian-li Shang Zhi-fang Zong Hao Zhang
文章页码：594 - 602
摘 要：Gypsum is a traditional building material.To improve the humidity-controlling properties of gypsum,we prepared a new type of humidity-controlling composite using the sol–gel method.Methods to determine the maximum equilibrium moisture content and speed of adsorption/desorption were subsequently applied to analyze the performance of the samples.The appearance and structural properties of the samples were characterized by scanning electronic microscopy（SEM）.The experimental results show that the humidity-controlling gel with added LiCl exhibits high moisture storage and that the equilibrium maximum moisture content is 5.652 g/g at a 75.29% relative humidity（RH）.A mass ratio of LiCl/sol = 0.15 is demonstrated to be appropriate for the preparation of the new humidity-controlling composites.A coarse network with tiny pores is observed on the surface of the new humidity-controlling composites,and this pore network provides sufficient space for moisture adsorption.
Jian-li Shang，Zhi-fang Zong，Hao Zhang
College of Materials and Mineral Resources,Xi’an University of Architecture and Technology
摘 要：Gypsum is a traditional building material.To improve the humidity-controlling properties of gypsum,we prepared a new type of humidity-controlling composite using the sol–gel method.Methods to determine the maximum equilibrium moisture content and speed of adsorption/desorption were subsequently applied to analyze the performance of the samples.The appearance and structural properties of the samples were characterized by scanning electronic microscopy（SEM）.The experimental results show that the humidity-controlling gel with added LiCl exhibits high moisture storage and that the equilibrium maximum moisture content is 5.652 g/g at a 75.29% relative humidity（RH）.A mass ratio of LiCl/sol = 0.15 is demonstrated to be appropriate for the preparation of the new humidity-controlling composites.A coarse network with tiny pores is observed on the surface of the new humidity-controlling composites,and this pore network provides sufficient space for moisture adsorption.
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