HDI三聚体加固材料对纸质文物字迹保护性能研究

以HDI三聚体化学加固材料对纸质文物中字迹保护效果为研究对象,选用纸质档案中常见的墨汁、碳素墨水、蓝黑墨水、纯蓝墨水、红色墨水、铅笔字迹等材料,根据加固前后字迹的颜色变化、扩散现象,以及与壳聚糖、羧甲基纤维素、明胶-甘油溶液加固材料所做的对比,对HDI三聚体加固纸质文物字迹的安全性进行评估,并依据耐酸性、耐碱性、耐氧化性和耐干热老化性能对其耐久性做出综合分析,进而探究HDI三聚体加固材料对字迹的保护效果。结果表明:在安全性上,HDI三聚体相比其他加固材料性能更优；在耐久性上,其对墨汁、碳素墨水字迹的保护效果较好,对蓝黑墨水、纯蓝墨水、红色墨水、铅笔字迹的保护效果相对较差。另外,依据字迹材料特点,选取适当质量分数加固溶液方能达到理想的加固效果。

Research on the conservation of handwriting on paper relics using the HDI trimer reinforcement material

The HDI trimer is a chemical reinforcement material for paper. In order to evaluate its safety for the reinforcement of handwriting on paper relics, we selected handwriting materials, Chinese ink, carbon ink, blue-black ink, pure blue ink, red ink and pencil, which are commonly seen in paper files. We noted the color changes before and after reinforcement and the diffusion of the handwriting materials. We also compared the HDI trimer with other reinforcement materials such as chitosan, carboxymethyl cellulose and a gelatin-glycerin solution. In addition, we did a comprehensive analysis of its durability according to the resistances to acid, alkali, oxidation and dry heat aging, and also further investigated the effects of conservation on handwriting. The results show that 1) the HDI trimer performs better than other reinforcement materials in terms of safety; 2) with regard to durability, the HDI trimer has good conservation effects on handwriting materials of Chinese ink and carbon ink, but relatively poorer conservation effects on those of blue-black ink, pure blue ink, red ink and pencil. In addition, in order to achieve ideal reinforcement effects, appropriate mass fractions of the reinforcement material should be chosen according to the characteristics of different writing materials.