【摘要】 冷冻干燥是除去饱水文物中水分的有效方法。作者利用浓度逐步升高的PEG2000溶液对木质文物样品进行处理后,在自制的冷冻干燥装置上进行了冻干。冻干效果良好,无开裂和断裂现象发生,试样中最大的、冻干前质量为460 g的文物样品冻干后在三个方向上的收缩率均小于2.5%。更多还原

【Abstract】 Freeze-drying is an effective process to remove the water from waterlogged archaeological artifacts.With the PEG2000 solution whose concentration was gradually increased applied to the samples of those articrafts and then they were freeze-dried on a freeze-drier we developed,the results showed that no cracks/fractures are found on the samples.A 460g-sample as the biggest one revealed that its 3-D shrinkage ratios are all less than 2.5% after freeze-drying.更多还原