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The Fundamental Researches for Discoloration and Recovery of Lead Glass Pigments for Japanese Style Paintings

日式绘画用铅玻璃颜料的变色与恢复基础研究

基本信息

批准号：
08610068
负责人：
SUGAI Hiroko
金额：
$ 1.47万
依托单位：
Gangouji Insitute for Research of Cultural
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

项目摘要

Lead glass pigments ("Shin-iwaenogu" are one of the most popular painting materials for Japanese style paintings. We examined the discoloration of lead glass pigments.First, we confirmed that there were dark silver gray parts on the picture of lead glass pigments. In this part, PbS has been detected. The picture had foundation layr of HgS.Possibly, lead glass interact with S^<2-> from HgS.Next, we examined what various gases influence lead glass pigments (sample colors : pink, yellow, green, pale blue, and gray)* SO_2 10ppm, high humidity, 20ﾟC,20 hoursYellow color turned to brown, gray color changed to ivory, and other colors were brighten. Various product may have formed on pigments.* H_2S 10ppm, high humidity, 20ﾟC,20 hoursAll colors were dark-browned. Some sulfides may have formed on pigments.* Formaldehyde 25ppm, high humidity, 20ﾟC,20 hoursChanges of color were not confirmed.At 1) or 2) cases, foundation layr of chalk have playd the part of buffer to acid gases.After 1) experiment, we try to recover, using O_3. Pale blue and gray pigments recovered their blueness slightly. But some blurs remained on surface of test panel.

铅玻璃颜料（“Shin-iwaenogu”）是日本风格绘画中最流行的绘画材料之一。我们检查了含铅玻璃颜料的变色情况。首先，我们确认铅玻璃颜料的图片上有暗银灰色的部分。在本部分中，已经检测到PbS。图中有HgS的基础层。铅玻璃可能与来自HgS的S^<2->相互作用。接下来，我们研究了不同气体对铅玻璃颜料（样品颜色：粉红色、黄色、绿色、淡蓝色和灰色）的影响* SO_2 10ppm，高湿度，20个浓度，20小时黄色变成棕色，灰色变成象牙色，其他颜色变亮。颜料上可能会形成各种各样的产物。* H_2S 10ppm，高湿，20 C，20小时所有颜色为深褐色。有些硫化物可能在颜料上形成。*甲醛25ppm，高湿，20 C，20小时。在1)或2)种情况下，基层的粉笔对酸性气体起缓冲作用。1)实验后，我们尝试用O_3进行恢复。淡蓝色和灰色颜料略微恢复了蓝色。但测试板表面仍有一些模糊。