Outer wall real stone paint and preparation method thereof
A real stone paint, exterior wall technology, applied in the direction of coating, can solve the problems of poor weather resistance, water absorption and discoloration, high resilience, and achieve the effects of good decorative effect, good weather resistance and low cost.
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Embodiment 1
[0027] The present invention is realized through the following technical scheme, a real stone paint for exterior walls, comprising the following components by weight: 100-200 parts of colored sand, 25-50 parts of silicon-acrylic emulsion, 4-20 parts of film-forming aids, dispersing 0.2-1.5 parts of agent, 0.5-2 parts of thickener, 1-2 parts of defoamer and 0.1-0.5 parts of water repellent.
[0028] It should be noted that, through the above improvements, the silicon-acrylic emulsion uses TD-661 as the base material for the best bond strength.
[0029] Silicone-acrylic emulsion is an emulsion that is polymerized by adding unsaturated bond-containing organosilicon monomers and acrylic monomers with suitable additives through a core-shell coating polymerization process. It combines the high temperature resistance, weather resistance, chemical resistance, hydrophobicity, low surface energy and non-pollution of silicone with the high color retention, flexibility and adhesion of acr...
Embodiment 2
[0032] This example is further optimized on the basis of the above example, including the following components by weight: 150 parts of colored sand, 25 parts of silicon acrylic emulsion, 5 parts of film-forming aid, 1 part of dispersant, 0.5 parts of thickener 1 part, 1 part of defoamer and 0.2 part of water repellent.
[0033] Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.
Embodiment 3
[0035] This embodiment is further optimized on the basis of the above embodiments. A real stone paint for exterior walls includes the following components by weight: 100-200 parts of colored sand, 25-50 parts of silicon-acrylic emulsion, and 4 parts of film-forming aids. -20 parts, 0.2-1.5 parts of dispersant, 0.5-2 parts of thickener, 1-2 parts of defoamer and 0.1-0.5 parts of water repellent.
[0036] Through the test, it is found that the particle size of the colored sand has a great influence on the appearance and cost of the real stone paint coating. If the particles are rough, they will easily precipitate, and the covering power of the coating will decrease. The appearance of the coating will be rough and easily polluted by the sand layer. Too fine coating texture is poor, not plump, the demand for colored sand particles is large, and the cost is high;
[0037] When using colored sand grading 20-40 mesh to account for 10%, 40-80 mesh to account for 35%, and 80-120 mesh t...
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