Inorganic silicate imitation fair-faced concrete coating and its preparation method and application

Abstract

The invention relates to a paint and its preparation method and application. In terms of mass percentage, the coating includes 5%-8% of styrene-acrylic emulsion, 5%-20% of potassium silicate, 15%-30% of silica sol, 15%-18% of titanium dioxide, 15%-20% of filler, 1.6% to 4.5% of agent, 0.5% to 1% of organic silicon hydrophobic agent, 0.2% to 0.4% of color paste and the rest of water; among them, potassium silicate is silane modified potassium silicate with a modulus of 3.5 to 4.0; Silica sol is stabilized. Adhesive system composed of specific content of styrene-acrylic emulsion, potassium silicate and silica sol. Silicate has good permeability, reacts with cement wall, and can penetrate into the wall substrate, so the bonding force is strong. Styrene-acrylic emulsion It improves the encapsulation of the coating on the powder, and the synergistic effect of potassium silicate and silica sol improves the cohesion and crack resistance of the coating film. The paint has good stability, the prepared paint film has weak luster, and has a good and realistic imitation fair-faced concrete effect; and the paint film has strong bonding force with the base material, is not easy to peel off, and has good yellowing resistance.

Description

technical field [0001] The invention relates to the technical field of architectural decoration, in particular to an inorganic silicate imitation fair-faced concrete coating and a preparation method and application thereof. Background technique [0002] Fair-faced concrete is an expression method of architectural modernism, and it is also called decorative concrete because of its decorative effect. The production method of fair-faced concrete is that after the concrete is poured, there is no more coating, tile, stone and other materials, and the natural surface effect of cast-in-place concrete is directly used as the finish. , uniform color, sharp edges and corners, no damage and pollution. Due to the unique aesthetic performance of the fair-faced concrete structure, it is loved by the majority of designers. [0003] However, there are also many problems in the manufacturing process of fair-faced concrete. For example, due to the lack of decoration works after removing the...

AI Technical Summary

Problems solved by technology

Over time, some common problems of latex paint such as peeling, peeling, and yellowing of the paint film will greatly reduce the effect of imitation fair-faced concrete

Moreover, the paint film of latex paint has better sealability, the product is airtight, and the paint film has a stronger gloss, which will also cause a big difference in touch and appearance from inorganic fair-faced concrete, so it can only be seen from a distance, not up close.

Inorganic dry powder finishing mortar imitation fair-faced concrete system uses dry powder finishing mortar to add toner for coloring. The salt and alkali in the dry powder are likely to cause pan-alkali problems, and it is difficult to control the coloring with toner, which will easily lead to color difference and stubble between batches. question

Therefore, the preventive effects of the general organic imitation clear-water concrete system and the inorganic dry powder facing mortar imitation clear-water concrete system are not satisfactory.

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