Research on the deterioration mechanism and "reinforcement of the same material" of wool cultural relics unearthed in the Astana tomb group in Xinjiang

Abstract Taking the textile cultural relics unearthed from the Astana tomb group in Xinjiang as the research object, the combination of NaClO and Ca(ClO)₂ is used to simulate the aging environment of cultural relics, the deterioration process and mechanism of wool cultural relics are discussed, and the replacement samples of cultural relics are produced; the keratin extracted from waste blended fabric is used as the reinforcement of the cultural relics. Material, simulated wool aging samples use the "same material reinforcement method" to carry out the reinforcement experiment of glutaraldehyde and ethylene glycol glyceryl ether (EGDE) to compare the reinforcement effect of keratin/glutaraldehyde and keratin/EGDE. The results show that the dissolution rate and keratin extraction rate of wool in the process of optimizing the recovery of keratin in the mixed acid system are about 90% and 50%; the aging conditions of NaClO and Ca(ClO)₂ mixed solution are 3%, and the aging cycle is 28 days. Under this condition, the degree of damage to wool is relatively close to Cultural samples; Compared with the reinforcement effects of keratin/glutaraldehyde and keratin/EGDE, the fabric fracture stress and strain has increased by 2.66 times, 3.81 times, 2.40 times and 3.10 times respectively. The effect of the keratin/glutaraldehyde reinforcement system is better than that of the keratin/EGDE reinforcement system.