What are the better reflective thermal insulation coatings?

What are the better reflective thermal insulation coatings? Lead: It is believed that the key to establish the standard of reflective thermal insulation coatings is solar reflectivity. Generally speaking, titanium dioxide can reflect both infrared light and visible light, and white architectural coatings are the easiest to reflect. The color of architectural coatings is determined by decorative collocation. Generally speaking, the utilization rate of colored buildings is higher than that of white buildings, and the utilization rate is as high as 80%. Therefore, color reflective heat insulation coating is more practical than white coating. This paper will introduce the standards of reflective thermal insulation coatings in detail.

Brief introduction of reflective thermal insulation coatings

Reflective thermal insulation coating is made of resin, pigment, filler and production technology. By reflecting sunlight, the purpose of cooling and heat insulation is achieved. Generally speaking, the wavelength of solar energy is mainly concentrated in the near infrared region and visible region of 0.4- 1.8um, so the higher the reflectivity of reflective thermal insulation coatings in this wavelength range, the better the thermal insulation performance of the coatings. The coating is mainly developed to meet the needs of aerospace and military. Later, because it can insulate heat and reduce the surface temperature of objects, it is widely used in petrochemical industry and building walls.

Standard for reflective thermal insulation coating

At present, the standards of reflective thermal insulation coatings are JG/T235-2008, GB/T2526 1-2003, GJB 1670- 1993, and thermal reflective coatings specification.

Through the test of GB/T2526 1-2003 "Reflective Thermal Insulation Coatings for Buildings", it is found that:

1. The solar reflectance of the white reflective thermal insulation coating is equal to or greater than 0.8;

2. The hemispherical emissivity of the reflective thermal insulation coating is equal to or greater than 0.8;

Through the test of JG/T235-2008 Reflective Thermal Insulation Coatings for Buildings, it is found that:

1. The thermal insulation temperature difference of the reflective thermal insulation coating is equal to 65438 00 degrees Celsius;

2. The thermal insulation temperature difference attenuation of the reflective thermal insulation coating is as small as 65438 02 degrees Celsius;

Through the test of JC/T 1040-2007 "Thermal Reflective Thermal Insulation Coatings for External Surfaces of Buildings", it is found that:

1. The water tightness of the coating is that it can be kept watertight for 30 minutes under the water pressure of 0.3MPa;

2. Impact resistance 50k g/cm；;

3. There is no obvious change within 4 hours in salt spray environment.

Through this article, do you all know the standard of reflective thermal insulation coatings? To learn more, please visit the Tuba Rabbit website ~

Edited on 2018-11-24.

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