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Preparation of Water Sensitive Paper with Modified Zeolite as a Functional Filler and Its Color Performance
Received:July 09, 2023  
DOI：10.11980/j.issn.0254-508X.2023.12.004
Key Words:zeolite  cobalt chloride  relative humidity  test paper
Fund Project:国网吉林省电力有限公司科技项目（2022-12）。
Author NameAffiliationPostcode
ZHANG Ming Siping Power Supply Company， State Grid Jilin Electric Power Limited Company， Siping， Jilin Province， 136100 136100
FANG Chongfeng Siping Power Supply Company， State Grid Jilin Electric Power Limited Company， Siping， Jilin Province， 136100 136100
ZHANG Xuefeng School of Chemical Engineering， Northeast Electric Power University， Jilin， Jilin Province， 132012 132012
CHEN Zicheng* School of Chemical Engineering， Northeast Electric Power University， Jilin， Jilin Province， 132012 132012
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Abstract:In this study， 2 g of zeolite was immersed in 30% cobalt chloride aqueous solution at room temperature for 60 min to prepare modified zeolite with cobalt chloride loading of 7.97%. The water sensitive test paper was further prepared with the modified zeolite as a functional filler. The results showed that the modification with cobalt chloride did not change the crystalline structure of zeolite， and cobalt chloride was uniformly deposited on the surface of zeolite. The test paper prepared with modified zeolite could make color response to the change of relative humidity in the air within 1~5 min， and produce naked eye discernable color change when relative humidity increased from 12.5% to 54.0%， of which the detection capacity was better than that of commercially available cobalt chloride test paper.
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