碳酸钠对纸质文献超声雾化脱酸效果的研究

Effect of Sodium Carbonate on Ultrasonic Atomization Deacidification of Paper Documents

关键词:  超声雾化  碳酸钠  纸质文献  脱酸

Key Words:ultrasonic atomization  Na₂CO₃  paper documents  deacidification

摘要:本研究使用易溶性水相脱酸剂Na₂CO₃溶液，通过超声雾化对纸质文献进行脱酸处理，对其可超声雾化质量分数范围、超声雾化速率、雾化量、雾化稳定性、雾化粒径、脱酸均匀性等效果进行了探究。结果表明，Na₂CO₃溶液可超声雾化质量分数范围为0~12%；质量分数高的Na₂CO₃溶液超声雾化较为困难，超声雾化速率小；Na₂CO₃溶液质量分数越低，超声雾化速率越不稳定；随Na₂CO₃溶液质量分数的升高，超声雾化平均粒径递增且变化幅度不大。在实验条件范围内，相对于其他质量分数，质量分数6%的Na₂CO₃溶液雾化量最大，超声雾化稳定性高，脱酸均匀性最好，脱酸一段时间后，纸质文献仍能保持较好的脱酸效果。

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.