Reflection and heat insulation paint for buildings

Abstract

The invention discloses reflection and heat insulation paint for buildings. The reflection and heat insulation paint comprises the following ingredients in parts by weight: 9.5 to 23 parts of water, 0.44 to 1.08 parts of thickening agents, 0.45 to 0.55 parts of dispersing agents, 0.1 to 0.2 parts of wetting agents, 0.4 to 0.8 parts of defoaming agents, 0.05 to 0.25 parts of multifunctional auxiliaries, 0.05 to 0.15 parts of preservatives, 0.05 to 0.25 parts of mould inhibitors, 15 to 25 parts of titanium dioxide, 0 to 22.5 parts of composite heat insulation powder, 2 to 6.5 parts of fillings, 1 to 2 parts of antifreezing agents, 1.25 to 2 parts of film forming auxiliaries, 0.01 to 0.2 parts of emulsifying agents, 25 to 40 parts of emulsion, 2.5 to 5 parts of hydrophobing agents, 0.05 to 0.15 parts of pH value regulating agents and 0.02 to 0.07 parts of tributyl phosphate, wherein the composite heat insulation powder is a powder mixture obtained by Rectorite powder, potassium hexatitanate whiskers and ferro-nickel spinel through mixed dispersion, and the hydrophobing agents are polysiloxane emulsion. The reflection and heat insulation paint has high reflection, blockage and radiation performance on solar spectrum, the heat insulation effect is good, in addition, the composite heat insulation power is easy to prepare, and the preparation cost is lower.

Description

technical field [0001] The invention relates to a reflective and heat-insulating coating for buildings, which belongs to the technical field of building materials. Background technique [0002] In recent years, with the country's emphasis on building energy conservation, the external wall insulation market has developed rapidly. Although various forms of external wall insulation systems such as rock wool board, polystyrene board, extruded board and thermal insulation particle mortar have played a certain role in energy saving and emission reduction in the construction field, some shortcomings have gradually been exposed, such as The construction method is complex, the construction period is long, the cost is high, and the quality control is difficult. [0003] In view of this, great progress has been made recently in the research of reflective and heat-insulating coatings for buildings. Different from traditional external insulation of external walls, reflective thermal in...

AI Technical Summary

Problems solved by technology

[0005] However, for the first type of barrier heat-insulating coating, the particle size of the microbead-type functional filler is generally large, which cannot meet the requirements in some occasions where the fineness of the coating is required; the most important deficiency is due to The brittle and brittle properties of its functional fillers cannot be produced completely according to the traditional architectural coating process; therefore, most manufacturers currently use the rolling altar method for production, but this production process is inefficient, prolongs production time, and is difficult to clean equipment. And the investment in equipment is huge

For the second type of heat-reflective heat-insulating coating, the nano-titanium dioxide and modified titanium dioxide-based functional fillers have a high refractive index and have a good reflection effect on visible light, but the reflection on infrared light is relatively low. Difference

For the third type of radiant insulation coating, its application is greatly limited due to the darker color of the metal oxide it uses

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