气凝胶毡液氮吸附性能的研究  

Study on Adsorption Properties of Aerogel Felt in Liquid Nitrogen

作　　者：王虹 李荣年 胡晓东 Wang Hong;Li Rongnian;Hu Xiaodong(Zhejiang Pengchen Paper Research Institute Co.,Ltd.,Zhejiang,311215)

机构地区：[1]浙江鹏辰造纸研究所有限公司,浙江311215

出　　处：《当代化工研究》2020年第17期42-43,共2页Modern Chemical Research

摘　　要：借助实验方法,分别以气凝胶毡、玻纤毡为吸附主体,液氮为被吸附物质,研究了吸附主体对液氮的吸附特性及液氮的蒸发特性,试验对比了保温容器内以气凝胶毡为吸附材料并加注定量液氮与保温容器直接充装液氮二者在相同环境条件下液氮的蒸发速度。结果表明:同等条件下单位体积气凝胶毡液氮吸附量高于玻纤毡,而气凝胶毡中的液氮蒸发速度则慢于玻纤毡中液氮的蒸发速度;保温容器内以气凝胶毡为吸附材料吸附定量液氮的试样比保温容器直接充装同体积液氮试样其液氮蒸发速度慢一倍以上。With the help of experimental methods,aerogel felt and glass fiber felt are used as the main adsorption body,and liquid nitrogen is used as the adsorbed substance.The adsorption characteristics of the adsorption main body to liquid nitrogen and the evaporation characteristics of liquid nitrogen were studied.The evaporation rate of liquid nitrogen under the same conditions for the adsorption of quantitative liquid nitrogen in the aerogel felt and the direct filling of liquid nitrogen in the heat preservation container were tested.The result shows:Under the same conditions,the adsorption of liquid nitrogen per unit volume of aerogel felt is higher than that of glass fiber felt,and the evaporation rate of liquid nitrogen in aerogel felt is slower than that of glass fiber felt;The sample of the aerogel felt adsorbing the quantitative liquid nitrogen in the heat preservation container is more than twice as slow as the liquid nitrogen evaporation rate of the sample directly filled with the same volume of liquid nitrogen in the heat preservation container.

关 键 词：气凝胶毡 玻纤毡 液氮 吸附材料 蒸发 

分 类 号：TB34[一般工业技术—材料科学与工程]