Application Research On Impregnation Technology Used In Ancient Ivory Protection

In order to protect the ancient ivory unearthed from Jinsha effectively, impregnation technology used in ancient ivory protecting was studied, "double-container" vacuum pressure impregnation equipment was manufactured, modified sodium silicate and PDMS/ SiO₂ hybrid was used in vacuum pressure impregnation protecting for ancient ivory, modified paraffin material was used in normal pressure impregnation protecting for ancient ivory. Effectives were compared, theory of impregnation was studied. The results of research as follows:(1) Developed a "double-container" vacuum pressure impregnation equipment for ancient ivory protecting. The equipment could enhance the efficiency of impregnation through eliminating the water and air in ancient ivory; it could avoid the damage to ancient ivory caused by the boiling of impregnating materials; it could also control the pressure to minimize the damage to ancient ivory. (2) The ancient protected by modified sodium silicate through vacuum impregnation was well felted, the strength of the ancient ivory was raised, the shape look of ancient ivory did not change basically. But the inside of ancient ivory cracked during drying process. The ancient protected by PDMS/ SiO₂ hybrid through vacuum impregnation was well filled by impregnation material, the shape look of ancient ivory did not change basically. But some piece of the ancient ivory cracked during drying process because the impregnation material contracted dramatically. The material was supposed to be improved. (3)The ancient ivory impregnated by modified paraffin material through normal pressure impregnation was well protected. The material not only filled the crack of ancient ivory, but also filled the microstructure. The strength of ancient ivory was improved dramatically. The size of ancient ivory was not changed basically. But ancient ivory lustered after protected.