陕西杨家湾出土西汉彩绘兵马俑的修复保护研究

陕西咸阳杨家湾出土的西汉彩绘兵马俑出现大面积严重风化褪色现象及彩绘层严重脱落、起翘，应尽快采取抢救性保护措施对其进行保护。在系统分析了该批彩绘兵马俑的病害种类及其产生原因后，通过XRD、SEM—EDS和Micro FT-IR对其彩绘颜料成分进行了分析。此基础上，制定了一个系统的修复方案，选取了合适的修复工艺及修复保护剂。结果表明，三乙氧基硅烷缩合而成的树脂胶材料对彩绘层进行回帖后，其强度有了明显的增强。经过自行研制的RFC显现加固剂处理后的彩绘颜色显现出了其古朴清晰的原貌，且颜料附着力增强。

Restoration and conservation study of colored terra-cotta pottery excavated from Yangjiawan village, Shaanxi

Western Han Dynasty terra-cotta figurines excavated from the northern highland of Yangjiawan,a vil- lage in Shaanxi,have decayed seriously.Weathering,color-fading,and paint detachment were observed.Rescue conservation should be taken as soon as possible for the protection.In this paper,the types and causes of the decay were discussed.Meanwhile,the pigment compositions were analyzed with XRD,SEM-EDS,and Micro FT-IR. Based on the research,a systematic restoration plan was designed with suitable conservation techniques and protec- tive reagents.Our results revealed that paint layer glued back with polymerized triethoxysilane resin showed great improvement of attachment.Painted colors clearly showed its old appearance and could be attached better to the pottery body after being treated with RFC,a reagent designed by ourselves.