Middle layer of lacquer of lacquer layer in the middle is the aggregate, binder (base material), various additives and solvent composition.?? Aggregate aggregate including colored aggregate and normal aggregate two. Colored aggregate is natural stone material after crushing, cleaning, screening multi-step processing and and has good weather resistance, acid and alkali resistance and fastness
For the non artificial sintered sand. Ordinary aggregate to the choice of good whiteness, high silicon content of quartz sand, due to the natural stone powder color is dim, when used alone, color dull, with a certain amount of white quartz sand and natural color powder with the use of, shades of the color adjustment, the coating of the tone of a rich sense of the level, can achieve similar to natural stone texture, while also reducing the production cost.
Particles of the aggregate level pairing of lacquer construction and coating performance influence is very large, if the aggregate particles is too coarse, in the paint is easy to precipitate, spraying floor sand will also increase, the amount of coating will be, and the coating coverage decreased, the appearance of the coating rough, easy to accumulate dust and pollution; such as aggregate particles are too small, decorative effect is poor. Therefore, the use of particle size collocation is used, is not easy to affect the coating decorative effect, can also the density of coating. "
Binder (base material) binder is one of the key factors influencing the performance of the lacquer, its quality directly affects the real stone paint film hardness, bonding strength, water resistance, weather resistance and other aspects of performance. For lacquer emulsion should meet the requirements of the following three aspects:
A emulsion is stable, the formation of colorless, transparent, transparent, in the ultraviolet light is not easy to yellow and pink;
B film hardness is high, in order to improve the stain resistance of coating;
C film, the swelling ratio is smaller, the formation of water resistance and whitening film, which has the ability of anti white water.