The ancient bonding materials on pottery are closely related to the repair process of pottery,and are one of the reflections of the level of pottery making in society at that time.In this study,we conducted a scientific and technological analysis on an ancient adhesive used for pottery buildings unearthed from the Han Dynasty cliff tombs at Baozishan,Xinjin District,Chengdu.The inorganic and organic components of the adhesive were investigated respectively using scanning electron microscopy-energy dispersive spectrometry(SEM-EDS),X-ray diffraction(XRD),laser particle size analysis,Fourier transform infrared spectrometry(FTIR)and gas chromatography-mass spectrometry(GC-MS).The results show that the particle state,size and composition of the adhesive were similar to those of clay particles,so it is inferred that its main inorganic component was clay.The characteristic peaks of FTIR spectrum at the wave numbers 3 431 cm-1,1 670 cm-1 and 1 419 cm-1 were consistent with the amide group.The result of amino acid analysis shows that its organic component contained a protein binder,a mixture of animal glue and egg.The organic mixed materials had a higher viscosity to make up for a single material,and the clay could increase the density of hydrogen bonds in the system and played a filling role.The synergistic effect of each component in the adhesive is the reason for its high adhesion and certain stability.However,due to its poor durability and incompatibility with the overall style of pottery,it is speculated that the material was a temporary adhesive.In addition,its composition and use were very similar to those of the ancient adhesive used for the Qin Terra-Cotta Warriors,which shows the inheritance and evolution of the burial system and pottery-making techniques of the Qin Dynasty in the Han Dynasties.The research results provide information for the study of the history of pottery restoration in China,and also provide a scientific basis for the conservation and restoration of contemporary pottery.
关键词
宝资山汉代崖墓/彩绘陶楼/粘接剂/"有机-无机"复合材料/汉承秦制/陶器修复
Key words
Han Dynasty cliff tombs at Baozishan/Painted pottery building/Adhesive/"Organic-inorganic"composite material/Inheritance of Qin Systems by the Han Dynasties/Restoration of pottery
维普
万方数据