跨湖桥遗址考古木材的二次保护

跨湖桥遗址考古木材出土后经过脱盐处理,然后采用聚乙二醇(PEG)进行定形加固。保护后的考古木材存在色泽变深的问题,需要对这些考古木材进行二次保护。在二次保护过程中,选用1,2-二甲基-3-羟基-4(1H)-吡啶酮复配溶液作为脱盐脱色络合溶液,以PEG为定形加固剂,采用真空冷冻方式进行脱水干燥。二次保护取得了良好的效果,考古木材尺寸和形状基本保持不变,色泽更为自然,木材纹理清晰可见。

Re-conservation of archaeological wood excavated from Kuahuqiao Sites

Archaeological timbers were desalinated and then stabilized and consolidated with polyethylene glycol (PEG) after being excavated from Kuahuqiao Sites. However, due to darkening after conservation, the archaeological timbers needed to be re-conserved. In the process of re-conservation, a solution of 1,2-dimethyl-3-hydroxy-4(1H)-pyridone was selected for desalting and decolorizing, PEG was used as a stabilizing and consolidating agent, and the vacuum freezing method was used for dehydration and drying. The re-conservation has achieved good results. The dimension and shape of the archaeological wood remain unchanged, the color is more natural, and the wood texture is clear and visible.