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Sep 13, 2016
Wall material absorbs moisture will causeserious damage to the wall itself, needs the moisture in the wall of a flowchannel in the form of water vapor evaporation from the wall material. Therefore,reducing the water absorption of building materials, exterior wall materialsgiven "breathing" function, is to improve the building decoration,waterproof important way. Silicone Coating with organopolysiloxane with certainreactive groups as the main film-forming material, its backbone structure has astrong chemical affinity, and a small amount of active groups on the moleculesin the film forming process and silicon reactive with the hydroxy acidsubstrate. Coating the capillary channel should not be closed, the water withinthe substrate to diffuse outward in time, to ensure a good base"breathing" function. Sun et al examined the new"breathing" properties and water-resistant silicone coatings, provethat the coating can be used for exterior protection of high-grade buildings. Ina building with a silicone resin film formed on the surface layer of material,which can effectively improve the performance of buildings surface weathering(weathering resistance, and acid rain soaking rain erosion capacity),especially for high-end architectural protection of ancient buildings it has acertain practical Value.