Infrared shielding type glass heat-insulating coating and preparation method thereof

Abstract

The invention relates to an infrared shielding type glass heat-insulating coating which is prepared from the following raw materials in percentage by weight: 40 to 50 percent of organic silicon modified acrylic polymer emulsion, 17 to 25 percent of nanometer semiconductor material, 0.1 to 1.5 percent of molecular bridge and 0.5 to 0.7 percent of dispersant. The coating enhances the transmission rate of a coating layer for visible light, so that the light transmission rate of the coating layer reaches 90 percent. The coating layer achieves high infrared reflectivity and shielding rate: the reflectivity thereof for infrared rays reaches 85 percent, and the coating layer with the high infrared reflectivity has high heat-insulating effect; coated glass can not be penetrated by an infrared night vision instrument due to the high infrared shielding rate of the coating layer, and indoor privacy is protected. In addition, the coating of the invention has lower heat transfer coefficient, and the heat transfer quantity thereof is lower than 29 percent of solar energy.

Description

technical field [0001] The invention relates to a glass coating, in particular to an infrared shielding glass heat-insulating coating and a preparation method thereof. Background technique [0002] Sustained and rapid economic development has brought about increasingly prominent energy and resource issues. Environmental protection, energy conservation and emission reduction, rational use of resources, and the development of a low-carbon circular economy have become major themes of national concern. [0003] The construction industry has always been one of the areas that consume the most energy. According to incomplete statistics, the energy consumption for heating and cooling of building facilities in my country has reached more than 30% of the country's total energy. The so-called building energy saving is to reduce the energy consumption rate of continuous heating and cooling of building rooms through scientific material selection, rational design, performance optimization...

AI Technical Summary

Problems solved by technology

[0004] At present, coated glass, filmed glass, and low-emissivity glass (LOW-E glass) are widely used in my country, but it is reported that the coated glass with the best heat insulation effect has a heat transfer of 39% of the sun's energy, and its heat insulation is only 39%. 61%; the energy-saving effect has room for further improvement

These above-mentioned glasses also have the problem of low light transmittance. For example, because of containing metallic silver ions in LOW-E glass, cause its light transmittance to be low, only 63~68%; Most of the existing transparent glass coatings use Made of modified acrylic fluorosilicone resin and crosslinking agent, the light transmittance of glass treated with it is only 75%

At the same time, the existing glass coatings have low reflectivity and shielding rate to infrared rays, such as their reflectivity to infrared rays is only about 30%, and they are expensive, which restricts their wide application and popularization.