What are the better reflective insulation coatings? Introduction: Research believes that the key to establishing standards for reflective heat-insulating coatings is the solar reflection ratio. In general, titanium dioxide can reflect both infrared and visible light, and white architectural coatings are most easily reflected. However, the color of architectural coatings is determined by the decoration. Generally speaking, the usage rate of colored buildings is higher than that of white buildings, with the usage rate being as high as 80%. Therefore, colored reflective insulation coatings are more practical than white coatings. This article will introduce the reflective insulation coating standards in detail.

Introduction to reflective heat-insulating coatings

Reflective heat-insulating coatings are made through the processing of resins, pigments, fillers and production processes. They reflect sunlight to achieve cooling, The purpose of thermal insulation. Generally speaking, the wavelength of solar energy is mainly concentrated in the near-infrared region and visible light region of 0.4-1.8um. ??Therefore, the higher the reflectivity of the reflective thermal insulation coating in the wavelength range, the better the thermal insulation performance of the coating. This coating was mainly developed to meet aerospace and military needs. Later, because the coating can insulate heat and reduce the surface temperature of objects, it was widely used in the petrochemical industry, house building walls, etc.

Reflective heat-insulating coating standards

At present, the standards for reflective heat-insulating coatings include JG/T235-2008 "Architectural Reflective Heat-insulating Coating" and GB/T25261-2003 " "Reflective Insulating Coatings for Buildings", GJB1670-1993 "Specifications for Heat Reflective Coatings", JC/T1040-2007 "Heat Reflective Insulating Coatings for Building Exterior Surfaces" and the American ASTMC1483-04 "Standard for Solar Radiation Control Coatings for Exterior Buildings" regulations .

After the GB/T25261-2003 "Reflective Insulating Coating for Buildings" test, the test results are as follows:

1. The solar reflection ratio of white reflective insulating coating is equal to or greater than 0.8 ;

2. The hemispheric emissivity of reflective heat-insulating coating is equal to or greater than 0.8;

After the test of JG/T235-2008 "Architectural Reflective Heat-insulating Coating", the test result is:< /p>

1. The thermal insulation temperature difference of reflective thermal insulation coating is greater than 10 degrees Celsius;

2. The thermal insulation temperature difference attenuation of reflective thermal insulation coating is less than 12 degrees Celsius;

After the test of JC/T1040-2007 "Heat reflective insulation coating for building exterior surfaces", the test results are as follows:

1. The water impermeability of the coating can be maintained for 30 minutes under a water pressure of 0.3MPa Impermeable;

2. Impact resistance is 50kg per cm;

3. No significant change within 4 hours in salt spray environment.

Through this article, have you all understood the standards for reflective thermal insulation coatings? If you want to know more relevant knowledge, please log on to the Tubatu website~

Edited on 2018-11-24

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