秦陵铜车马彩绘保护的最佳湿度研究

A study on the ideal relative humidity of preserving colour drawings of bronze chariot and horses

在对秦陵铜车马彩绘取样分析的基础上 ,对其保存环境湿度进行了模拟测试 ,以红、白、蓝、绿4种矿物质颜料为代表 ,通过改变环境湿度、温度和有无光照等来考查色差值 ΔE的变化情况。结果表明 :在无光照条件下 ,湿度对彩绘颜色变化影响不大。在光照条件下 ,湿度、紫外线和光化学反应等因素的综合结果 ,其保护湿度应控制在 44%～

On the basis of analysis of samples of Qin Shi Huang Mausoleum colour drawings on the bronze chariot and horses components,the analogue test is made on the humidity to preserved surrounding environment of bronze chariot and horses.After changing environmental humidity, temperature and illuminating with or without ultraviolet ray, the changing situation of chromatic aberration Δ E according to the study of four typical mineral pigments including of white, blue, green pigments is inspected. It is found that humidity can not affect colour drawings without ultraviolet ray, on the other hand, both moisture and actinic ray can change the state of colour drawings under the condition of ultraviolet ray.Relative humidity of 44%～55% is selected as the ideal one for preserving bronze chariot and horses decorated with colored drawings.