What Is a Psychrometric Chart?

To retrieve cultural relics, we must grasp the wet and dry levels of the relics. Freshly unearthed textiles have almost no mechanical strength if saturated. The fibrous cells swell too much, and the adsorption force between the fibers is strengthened by the action of water. At this time, peeling will break the fibrous cells, and the fabric will be damaged like mud. On the other hand, if the textile relics are untreated in time and placed in an excessively dry environment, the moisture content of the fabric will be too low and it will not be suitable for removal.