Conservation and Restoration of Color on Cultural Properties

为了保存各种文化属性的颜色，对颜色的变色进行了检测和记录，并对颜色进行了固定和重新粘合处理。(1)利用X射线衍射法对国家重点木结构建筑的油漆工人使用的颜料进行了鉴定，发现使用了两种不同的颜料，根据作品的不同而使用了一种名称。(2)研制了斜光仪，并制作了实用的第一个模型。该装置在平面物体的任意点投射角度固定、光量均匀的平行光束，为记录受损色层的拍照提供了理想的照明条件。(3)利用风化室对木材人工老化后的红铅色进行检测，了解老化后开始剥落的动物胶的最低浓度。确定了以丙烯酸树脂为介质制备的色层在高浓度下具有较好的耐久性。(4)测定了木质建筑常用的三种颜料的变色程度。(5)通过三种动物胶中羟脯氨酸与其他氨基酸的比值来指示胶水的来源。(6)调查了神社寺庙木构件的颜色状况。检查了纸上的推拉门和木质装饰品上的画作是否有剩余的颜色层。

In order to conserve color on various cultural properties, examination and recording of deterioration of color are performed and developed as well as fixing and re-adhering treatment for the color.(1)X-ray deffraction method was employed for identifying the pigments which were used by a painter for national important wooden building, and found that two different pigments are used with one name depending on the works.(2)Raking light apparatus was developed and a first model for practical use was made up. The apparatus projects parallel light beam with fixed angle and even light value at any point of a flat object, and gives ideal lighting condition for taking photo of recording damaged color layer.(3) Red lead color on wood was examined after artificial aging by weathering chamber, to know the minimum concentration of animal glue in which the red lead color started peeling after the aging. It was confirmed that color layer which was prepared with acrylic resin as a medium, showed good durability in its high concentration.(4)Degree of discoloration was measured on three pigments on wood which were traditionally used by painters for wooden building.(5)The ratio of hydroxy-proline to other amino-acid contained in three kinds of animal glue, was found to indicate the source of the glue.(6)The condition of color on wooden member of shrines and temples were surveyed. Paintings on paper of sliding door and a wooden ornament were examined for remained color layers.