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Effect of Sodium Carbonate on Ultrasonic Atomization Deacidification of Paper Documents
Received:April 21, 2022  
DOI：10.11980/j.issn.0254-508X.2022.10.009
Key Words:ultrasonic atomization  Na2CO3  paper documents  deacidification
Fund Project:广州市科技计划项目（项目编号 GZDD201808）。
Author NameAffiliationPostcode
FAN Huiming* State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640
Guangzhou Lingnan Literature Protection Research Center， Guangzhou， Guangdong Province， 510640 		510640
XIE Kexin State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640
Guangzhou Lingnan Literature Protection Research Center， Guangzhou， Guangdong Province， 510640 		510640
LIU Jianan State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640
Guangzhou Lingnan Literature Protection Research Center， Guangzhou， Guangdong Province， 510640 		510640
MOU Hongyan State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640
Guangzhou Lingnan Literature Protection Research Center， Guangzhou， Guangdong Province， 510640 		510640
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Abstract:In this study， the soluble aqueous deacidification agent Na2CO3 solution was used to deacidify the paper documents by ultrasonic atomization， and the effects of ultrasonic atomization mass fraction range， ultrasonic atomization rate， atomization amount， atomization stability， atomization particle size， deacidification uniformity and so on were explored. The results showed that the ultrasonic atomization mass fraction of Na2CO3 solution ranges was from 0 to 12%. The ultrasonic atomization of Na2CO3 solution with high mass fraction was difficult with a small ultrasonic atomization rate. The lower the mass fraction of Na2CO3 solution， the more unstable the ultrasonic atomization rate. With the increased of the mass fraction of Na2CO3 solution， the average particle size of ultrasonic atomization increased with little change. In the range of experimental conditions， compared with other mass fraction， 6% of Na2CO3 solution had the largest atomization amount， high ultrasonic atomization stability and the best deacidification uniformity.The paper documents could still maintain a good deacidification effect after deacidification for a period of time.
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