Introduction of heat reflective thermal insulation coatings

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Heat-reflecting heat-insulating coating is a kind of coating with high solar reflectivity and infrared emissivity. It is a new type of cooling and thermal insulation coating that integrates reflection, radiation and hollow micro-bead insulation. The coating can reflect solar infrared rays and ultraviolet rays in the range of 400 nm to 2500 nm, automatically perform heat radiation cooling, radiate heat on the surface of the object to the air, and lower the temperature of the object. At the same time, the hollow microspheres with extremely low thermal conductivity are added to the coating, which can effectively block the heat energy transfer and ensure the permanent constant temperature of the internal space of the object.

The thermal insulation principle of the coating is to reflect the infrared radiation in sunlight to the external space through the reflection of the coating film, thereby preventing the object from rising due to absorption of infrared rays. The thermal insulation effect of the reflective coating in practical applications is closely related to the surface reflectance of the coating film, and is substantially independent of the thickness of the coating film. The coating can be widely used in heat reflection, heat insulation and cooling of construction, chemical, petroleum, electric power, metallurgy, shipbuilding, textile, storage, transportation, aerospace and other industries.

In general, there are three types of heat transfer: conduction, radiation, and convection. In the air, thermal radiation accounts for 85% of the total heat transfer, and the rest is absorbed and transmitted. As long as it can effectively control the three heat transfer methods, the ideal heat insulation effect can be achieved. The main material of high-quality heat-reflecting heat-insulating coating is aluminum oxide-treated vacuum micro-elastic resin sphere, which is finally formed into the paint-forming film to form a heat-reflecting interface on the surface of the coating, and its heat reflectivity can reach over 90%. . When the paint is used in a building, the thermal load of the building can be reduced, and the internal temperature of the building can be lowered, thereby saving the cost of refrigeration and air conditioning. In addition to buildings, this type of coating can also be used for metal components, oil and gas tanks, outdoor pipelines, and outdoor equipment and containers to accelerate the emission of heat, thereby reducing the temperature of the protected objects and reducing the cost of electricity, labor and equipment. Create a comfortable environment and extend the life of your equipment.

Key features of SE-R01 Roof Reflective Insulation Coating (Heat Reflective) and SE-W511 Exterior Reflective Insulation Coating (Heat Reflective) include:

1. High solar reflectivity and hemispheric emissivity The architectural reflectance thermal insulation coating requires that the solar reflectance and hemispheric emissivity of the building reflective heat-insulating coating reach 0.80 or higher. The solar reflectance and hemispheric emissivity of the product are 0.85 respectively. And 0.86.

2. Energy-saving effect Obvious test data shows that dark gray roofs only reflect 8% of solar heat, white (asphalt felt) tiles and clay tiles have reflections of 25% and 34%, respectively, while white metals can reflect 66% of solar energy. . SE-R501 and SE-W511 architectural reflective thermal insulation coatings (heat reflective) reflect more than 85% of solar energy.

3. Extending the service life of roofing Roofing is largely related to the aging of roofing materials, which are often caused by chemical reactions, which typically double the chemical reaction rate for every 10 °C increase in temperature. The coating can reduce the surface temperature of the building by 15 ° C ~ 25 ° C, which can effectively extend the service life of the roofing material. At present, the main raw material for building reflective heat-insulating coatings is acrylic acid, which has good initial energy-saving effect but poor staining resistance. The coating uses a fluorocarbon emulsion with excellent stain resistance and aging resistance, which can extend the service life of energy-saving coatings by 10 to 20 years.

4. Excellent physical and chemical properties SE-R501 roof reflective thermal insulation coating has excellent physical and chemical properties, tensile strength >1.5MPa, elongation >150%; no blistering, peeling and cracking within 5 hours at high temperature of 90 °C; At a low temperature of -30 ° C, there is no crack within 1 hour and does not leave the substrate.

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