Research On Surface Putty And Coating Of The Stone Historic Relics

Stone historical relics, such as stone tools of the Stone Age, rock caves, statues, stone tablets and engravings relics, are the glorious culture of China. One of the most notable characters of these cultural heritages is that they are non-renewable. But as years gone, stone historical relics in the world have been suffered from lots of damages, concluding long-time exposure in the sunshine, gale, heavy rain and snow. All have caused the stone cracking to powder. The results are that the characters of tablets are fuzzy, the outline of statues are unclear and so on. So the stone historical relics needs for the conservation urgently.Conservation of the stone historical relics mainly includes the following three steps: cleanout, reinforcement and seal. Among them the step of reinforcement is the most important one. It determines the validity and the permanence of conservation. This paper investigated surface material, surface bepaint coating. Several performances were also analyzed.Firstly, the acrylate, acrylate-styrene and acrylate- silicone were synthesis, also some tests were taken. And then influence of some major materials on the basic performances of putty was studied, and finds the major constitutes and mix proportion. The results showed that the new putty what we studied have excellent water-resistance, stability and high strength etc. Finally, the reason that the performances of putty were improved was analyzed from the point of micro by Scanning Electron Microscope(SEM), Differential Scanning Calorimeter(DSC) and Fourier Transform Infrared Spectrometry(FTIR).During the experiment process, this paper synthesis polyacrylate modified with silicone emulsion and FEVE resin, and then choose polyacrylate modified with silicone emulsion as the primordial material of coating. The effects of many factors on performances of emulsion and film such as kinds of monomer , component and ratio were discussed. At the same time, film performances in water resistance, chemical resistance would also be increased greatly. Finally, the reason that the performances of coating were improved was analyzed from the point of micro by Scanning Electron Microscope(SEM), Differential Scanning Calorimeter(DSC) and Fourier Transform Infrared Spectrometry(FTIR).