瓷器传统修复材料变色成因分析

瓷器文物修复需要经过多道工序方可完成,修复后的瓷器经过1～3年不等的时间均会出现修复部位不同程度的变色。为不影响瓷器文物的展陈效果,往往进行再次修复,多次修复对瓷器文物带来一定的损伤。为此,本研究以传统瓷器修复材料为研究对象,开展瓷器修复材料变色成因分析研究,以期为提高瓷器修复材料耐久性的研究提供一定的研究思路。本研究通过模拟瓷器修复工艺处理市售白色瓷板,然后进行干热、湿热和氙灯老化,利用色差仪和光泽度仪表征了老化前后各模拟样品的色差和光泽度。结果表明:作色处理色差变化最大,而且引起变色的环境因素主要是光和温度,故瓷器在修复后需避光和低温保存。

Analysis of the discoloration of restoration materials for porcelains

The restoration of porcelain relics can only be completed through multiple processes. The parts restored may show different degrees of surface discoloration in just 1~3 years. In order not to affect exhibitions, discolored porcelain relics often have to be restored again. However, multiple restorations may cause some damage to porcelain relics. Using some traditional restoration materials for porcelains as study objects, we conducted analyses on material discoloration for the purpose of improving their durability. In our study, white porcelain plates were treated with traditional porcelain restoration methods and then subjected to various ageing treatments with:dry heat, wet heat and exposure to xenon lamp light. The samples were then characterized by color difference and glossiness. The results show that 1) tinted samples show the biggest color change and 2) the environmental factors causing discoloration are light and temperature. Therefore, restored porcelains should be kept at lower temperatures and away from light.