Aqueous cold pigment double-coat multifunctional thermal-insulation external wall paint and preparation method thereof

Abstract

The invention discloses an aqueous cold pigment double-coat multifunctional thermal-insulation external wall paint and a preparation method thereof. The invention belongs to the field of paint, and relates to an external wall paint based on an aqueous organic silicone-acrylate emulsion, particularly a thermal-insulation external wall paint. The invention provides an aqueous cold pigment double-coat multifunctional thermal-insulation external wall paint. The paint is composed of a top-coat component and an intermidiate-coat component, wherein the top-coat component comprises aqueous organic silicone-acrylate emulsion, cold pigment, glass hollow microspheres, ceramic hollow microspheres, rutile type titanium dioxide, nano infrared emission ceramic powder, superfine French chalk, infrared emission ceramic powder, accessory ingredients and water. In the painting process, the top-coat and intermediate coat are used separately and respectively form a film. The paint can perform the functions of self cleaning and thermal insulation, thereby achieving the goals of energy saving, consumption reduction and environment protection.

Description

technical field [0001] The invention belongs to the field of coatings, and relates to the preparation of water-based organosilicon acrylic emulsion, and the emulsion is used as a base material to combine cold pigments, glass hollow microspheres, ceramic hollow microspheres, ultrafine infrared emitting ceramic powder, rutile titanium dioxide, etc. Exterior wall coatings prepared for pigments and fillers (including functional fillers). In particular it relates to thermally insulating exterior paints. technical background [0002] At present, the vast majority of buildings in our country are high-energy non-energy-saving buildings. In 2002, the Ministry of Construction issued the "Tenth Five-Year Plan" for Building Energy Conservation, actively promoting building energy conservation, which is conducive to improving people's living and working environment, ensuring the sustained and stable development of the national economy, reducing air pollution, reducing greenhouse gas emis...

AI Technical Summary

Problems solved by technology

[0010] 1. The design of thermal insulation coating products often focuses on the realization of the reflective heat insulation function, and comes with the functions of blocking heat insulation and radiation heat insulation, but it does not really design products from the three heat insulation mechanisms. In terms of solar heat insulation, the synergistic effect of the three heat insulation mechanisms of blocking heat insulation, radiation heat insulation and reflective heat insulation is realized to achieve high-efficiency heat insulation

[0011] 2. The color of the paint is single, mainly white, which cannot meet the application requirements

The reason for this situation is that no corresponding pigment with high reflectivity can be found.

[0012] 3. The thermal insulation coating with double-layer or multi-layer structure design may be to achieve the synergistic effect of multiple thermal insulation mechanisms, but in the functional design of the top coating, no attention is paid to the self-cleaning function and anti-aging function of the coating. Therefore, the influence and harm to the heat insulation effect of the coating due to factors such as coating pollution and aging are not considered

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