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酸化纸质历史文献冷冻干燥特性研究

, PP. 37-40

Keywords: 历史文献,脱酸保护,冷冻干燥,工艺研究

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Abstract:

采用真空冷冻干燥法对脱酸后的纸质历史文献进行干燥,以确保历史文献脱酸干燥后形状良好.采用曲线分析法得出试验纸质历史文献的共晶点温度,研究了部分预冻过程和干燥过程的参数.通过分析冻干曲线,验证了辐射导热联合干燥温度分布均匀,干燥效果良好.试验结果表明,脱酸后历史文献的暗黄度明显减轻,纸张酸性能基本去除,真空冷冻干燥法能有效控制历史文献的收缩变形.

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