Abstract: The composite materials used in the restoration of porcelain cultural relics are called porcelain materials. At present, the porcelain materials commonly used in the restoration of porcelain cultural relics generally have the problems of poor aging resistance and insufficient mechanical properties. 3M^TM solid ceramic microsphere is a spherical ceramic material with high hardness, high whiteness and corrosion resistance, which can effectively enhance the aging resistance and mechanical properties of material. In this paper, three commercially available ceramic microspheres (W-210, W-410 and W-610) were used as research object, and the commonly used porcelain replenishment material calcium carbonate was used as control group. Under the four experimental conditions of strong ultraviolet irradiation aging, weak ultraviolet irradiation aging, wet-heat dry-cold alternating aging and non-aging, the samples were subjected to bending test, tensile test, impact test, hardness test, color difference test and gloss test. The results show that the aging resistance and mechanical properties of 3M^TM solid ceramic microspheres are better than those of calcium carbonate, and the aging resistance and mechanical properties of ceramic microspheres W-410 are the best. Compared with the calcium carbonate control group, the mechanical properties of the experimental group are comprehensively improved by 25%~30%, and the aging resistance is comprehensively improved by 50%. It can be used as a new replenishment material for porcelain restoration.

Key words: 3M^TM solid ceramic microsphere, calcium carbonate, epoxy resin, porcelain replenishment, mechanical property