糠醇加固饱水考古木材的效果分析OA

This study investigated the effects and mechanisms of furfuryl alcohol(FA)in reinforcing waterlogged archaeological wood by analyzing the weight percent gain(WPG),chromaticity,oven-dry shrinkage rate,anti-swelling efficiency(ASE),and equilibrium moisture content of FA-treated archaeological wood.The reinforcement effects of FA on waterlogged archaeological wood were evaluated.Additionally,the distribution of FA resin within the wood and the chemical composition changes of the treated wood were analyzed using scanning electron microscopy,fluorescence microscopy,and Fourier-transform infrared spectroscopy.These analyses provided valuable insights into the mechanisms by which FA reinforces waterlogged archaeological wood.The results showed that FA successfully entered the wood and cured it to form a FA resin,which filled cell walls of the wood and blocked the entrance of water,so that FA was able to successfully strengthen the waterlogged archaeological wood.When the mass fraction of FA was 10％,the FA resin did not yet fully fill and swell the cell walls.However,when the mass fractions were 30％and 50％,the cell walls were more filled with FA resin,with minimal differences observed between these two groups of archaeological wood under electron microscopy.At the FA mass fraction of 50％,the absolute dry WPG of the impregnated archaeological wood reached the maximum value of 269％,and the surface color difference value was 2.66,i.e.,no obvious change in the surface color.Volumetric shrinkages of control and archaeological wood samples impregnated with 10％,30％and 50％FA solutions were 78.00％,4.23％,1.52％and 1.43％,respectively.The ASEs of the impregnated archaeological wood were all in the range of 90％to 100％.The water vapor adsorptions at 84.20％relative humidity were 13.27％,3.89％,4.08％and 4.10％for the control and archaeological wood samples impregnated with 10％,30％and 50％FA solutions,respectively.The dimensional stability and hygroscopicity of archaeological wood samples impregnated with FA solutions increased and decreased,respectively,and the differences caused by different FA mass fractions were small.This study verified that the FA impregnation of waterlogged archaeological wood effectively improved its dimensional stability and hygroscopicity,which can serve as a novel and effective method to preserve waterlogged archaeological wood.