文物保护与考古科学2025，Vol.37Issue(2)：37-47,11.DOI:10.16334/j.cnki.cn31-1652/k.20231103085
多因素耦合环境对聚乙二醇法加固饱水榉木文物微观结构的影响
Influence of the multi-factor coupling environment on the microstructure of waterlogged beech cultural relics reinforced using the polyethylene glycol method
摘要
Abstract
When the waterlogged beech cultural relics reinforced using the polyethylene glycol method are stored,they are susceptible to the combined effects of surrounding environmental factors such as temperature,humidity and light,resulting in the deterioration of cultural relics.In our work,Fourier transform infrared(FTIR)spectrometry,scanning electron microscopy(SEM)and other methods were used to study the changes of microstructure of waterlogged beech samples reinforced by polyethylene glycol dehydration under the coupling of temperature,humidity and ultraviolet light.The results show that the saturated beech wood sample dehydrated and reinforced with polyethylene glycol had full cell morphology,and polyethylene glycol could adaptively be filled or adsorbed into various sizes of cell lumens and conduit pores,effectively maintaining the structure of the cultural relic sample.After 30 days of testing at 40℃and 60%RH,the polyethylene glycol filled into the beech cells swelled and increased in volume,causing damage to the beech cell wall and continuous cracks between the cell structures.After natural drying,the polyethylene glycol underwent dehydration,contraction,and separation from the cell wall.The surface of the sample underwent yellowing,with a significant increase in brightness and a significant change in color difference after 30 days of testing in a coupled environment of 40℃,60%RH,and 351 nm of ultraviolet light.Photodegradation led to the melting of polyethylene glycol,and the molten polyethylene glycol continuously precipitated,greatly weakening its reinforcement effect on cell walls;the polyethylene glycol precipitated from the beech wood gradually covered the surface of the sample,and the surface texture thus became sticky.Finally,an influence mechanism of coupling environment on the structure of beech wood reinforced using the polyethylene glycol method was proposed.This study could provide reliable guidance for the application of polyethylene glycol to the dehydration and reinforcement of waterlogged wooden cultural relics.关键词
饱水榉木文物/聚乙二醇/温湿度/紫外光/SEMKey words
Waterlogged beech wood cultural relic/Polyethylene glycol/Temperature and humidity/Ultraviolet light/SEM分类
历史学引用本文复制引用
尚明玉,周和荣,肖阳,伊阳,魏彦飞,方北松,赵阳..多因素耦合环境对聚乙二醇法加固饱水榉木文物微观结构的影响[J].文物保护与考古科学,2025,37(2):37-47,11.基金项目
国家重点研发计划(2019YFC1520400)资助,甘肃省文物局重点科研基地(甘肃省文物考古研究所)项目(SJDK-2024-002)资助 （2019YFC1520400）
