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《Acta Materiae Compositae Sinica》 2018-06
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Preparation and comprehensive performance of phase change and humidity storage fibers/gypsum composite

ZHANG Hao;LIU Xiuyu;School of Civil Engineering and Architecture,Anhui University of Technology;Key Laboratory of Metallurgical Emission Reduction & Resources Recycling,Anhui University of Technology,Ministry of Education;  
With plastering gypsum as the matrix,phase change and humidity storage fibers were mixed with plastering gypsum to prepare phase change and humidity storage fibers/gypsum composite.Basic performance,humidity storage humidity controlling performance,phase change temperature controlling performance and durability performance of phase change and humidity storage fibers/gypsum composite were tested and analyzed.Structural composition and microstructure of phase change and humidity storage fibers/gypsum composite were analyzed by FTIR and SEM.The results show that phase change and humidity storage fibers with mass content of 40.0 wt% can provide the best performance and good durability performance of phase change and humidity storage fibers/gypsum composite.The standard diffusion degree of water consumption is 0.70,initial setting time is 40 min,final setting time is 55 min,bulk density is 1 005.56 kg/m3,tensile connection strength is 0.10 MPa and compressive strength is 2.55 MPa.Equilibrium moisture content is 0.0395-0.0935 g·g-1 in relative humidity 40%-65%.Cooling time is 100 sform 35℃to 20℃ with clear phase change platform.After the cycling test,the moisture absorption performance decline of phase change and humidity storage fibers/gypsum composite is less than 10%,phase change and temperature controlling performance decline is less than 5%.
【Fund】: 中国博士后科学基金(2017M612051);; 冶金减排与资源综合利用教育部重点实验室(安徽工业大学)资助项目(KF17-08)
【CateGory Index】: TB332
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