硅丙乳液的表征, 性能及其在模拟病害壁画修复中的应用.

In order to establish a complete and objective evaluation method in theory for property, a systematic study of silicone acrylic emulsion is carried out in this paper. The thermal stability, structure, morphology and particle size of silicone acrylic emulsion are characterized and analyzed. The relationship between the concentration of silicone acrylic emulsion with its viscosity and surface tension is investigated. In addition, to further verify the properties, the silicone acrylic emulsion is used for repairing the flaking and disrupting murals. The results show that the silicon acrylic emulsion is amorphous, the particles are nearly spherical without agglomeration, and its average particle size is 190 nm. The thermal stability and thermal aging resistance are improved effectively due to the introduction of Si-O-Si bond. With the increase of silicon-acrylic emulsion concentration, the surface tension decreases and the relative viscosity increases. Silicon-acrylic emulsion has good mechanical stability, storage stability, thermal stability and salt tolerance. Silicon-acrylic emulsion is used for restoration of the flaking and disrupting murals as cementing materials after aging experiment in various conditions. It is shown that silicone acrylic emulsion is a suitable material for mural conservation. All results indicate that silicon-acrylic emulsion can be used as a kind of excellent cementing material in repairing the flaking and disrupting mural. [ABSTRACT FROM AUTHOR]