陕西白水仓颉庙酥碱壁画脱盐修复的初步试验

Primary Test of Desalination to Treat the Disrupted Wall Painting in Cang Jie Temple of Baishui,Shaanxi Province

在前期研究和室内模拟试块脱盐试验的基础上,选择高吸水、高吸盐性脱盐材料和修复工艺对仓颉庙部分酥碱壁画进行治理。脱盐试验评估表明,脱盐使壁画中的含盐量明显降低,越接近表层脱盐效果越明显,尤其是可溶性的Na+、K+、Cl-、NO3-,含量降低的幅度约为1/3;二次脱盐可以降低壁画表面含盐量约70%。但是Ca2+、SO42-的脱盐效果不明显。加固后的壁画强度明显增加,外观没有明显的改变。脱盐技术初步试验表明,本次采用的脱盐工艺与材料适用于以NaCl、Na2SO4、NaNO3等易溶盐为主要成分的殿堂盐害壁画的脱盐加固,脱盐评估方法有较好的可行性、适用性。

Base of desalination test of previous study and coupon test,selected a kind of superabsorbent to water and salts and restoration technology to treat the some of Disrupted Wall Painting in Cang Jie Temple.The assessment of desalination test showed that,the content of the salt in the wall painting decreased obviously,especially on the surface,special for the soluble salts of containing Na+,K+,Cl-,NO3-,and the content could be short of 1/3;the content of salts on the surface could be short of 70% after the second desalting.But it is not ideal for the salts of containing Ca2+、SO42-.The wall painting becomes stronger and there is not obvious alteration on its appearance after the consolidation.The test showed that,the materials and technology was applied suits to the desalination consolidation of disrupted wall paintings in temple,and mainly to desalt the soluble salts,such as NaCl,Na2SO4,NaNO3 and etc.