Cultural Relic Freeze Dryer

Cultural Relic Freeze Dryer

Application of freeze dryer in freeze-drying of wooden cultural relics! Cultural relics are the historical witness of a country and region. How to protect the unearthed cultural relics is an urgent problem to be solved. Bamboo utensils and wooden utensils unearthed in the southern country are basically in a saturated state, and can only be preserved, displayed, or studied for a long time after physical or chemical dehydration. The traditional hot air drying method is easy to causes shrinkage and cracking of cultural relics. The natural drying method takes a long time from immersion to complete drying. After the treatment of water-saturated cultural relics with serious corrosion, shrinkage, deformation, and cracking will occur.

The working principle of the cultural relic freeze dryer is to remove water by turning water into ice and then subliming the ice. This method is applied to the preservation of cultural relics, which can effectively eliminate the cracking phenomenon caused by the surface tension of liquid water, and basically maintain the cultural relics. original appearance. Compared with the natural drying method, the processing time of the freeze-drying method is greatly shortened, and it is not limited by the environment and season. The appearance of the freeze-dried cultural relics remained good, and no significant shrinkage or cracking occurred.

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