Thermal insulation coating refers to a kind of functional coating that has been developed in recent years, has a reflective heat-ray type, has a short construction period, and has a quick effect. Thermal insulation coatings have great economic significance for industry and civilian use. It can prevent heat conduction, keep heat energy from being lost, and has important significance for saving energy and improving people's lives and working environment. Do you know the principle and function of thermal insulation coating? Now let's take a look at the principles and functions of insulation coatings and reflective heat insulation coating standards.
Thermal insulation coating principle
Insulation coating is a new type of cooling coating that integrates reflection, radiation and hollow microsphere heat insulation. The coating can reflect solar infra-red and ultraviolet rays in the range of 400nm to -2500nm and does not let the heat of the sun accumulate on the surface of the object. It can also automatically radiate heat and cool down, radiate the heat from the surface of the object to the space, lower the temperature of the object. Even in cloudy days and nights, the coating can radiate heat and lower the temperature. At the same time, the heat conductivity is very low in the paint. The transmission of thermal energy from the hollow microspheres can block external heat conduction to the interior of the object even when the atmospheric temperature is high. The three functions ensure that the objects coated with the paint cool down, ensuring that the interior space of the objects can maintain a constant temperature state.
When the sunlight is strong, the paint can lower the surface temperature of the object by more than 20°C, and the temperature can be reduced by more than 3°C on cloudy days and nights, or can be reduced to the same temperature as the atmospheric temperature. Zhisheng Coating has good waterproof and anti-leakage effect on small cracked objects. The paint has a variety of colors to choose from. It can paint different colors of normal temperature cooling paint according to different color requirements, and the other paint is applied. Smooth, smooth, hydrophobic, self-cleaning performance, so at room temperature cooling coating is a new type of room temperature cooling energy-saving long-life coating with high efficiency cooling, thin layer, decoration, self-cleaning, waterproof, moisture, UV aging, acid and alkali, and anti-corrosion. . Zhisheng brand heat insulation coating can be widely used in construction, chemical, petroleum, electric power, metallurgy, shipbuilding, textile, storage, transportation, aerospace and other industries to cool down, save energy, and create a comfortable human life and work environment.
Thermal insulation function has the following
1. Reflective heat insulation coatings and high temperature heat insulation coatings inhibit solar radiant heat, infrared radiant heat and shielded heat conduction, and their thermal performance is superior to other heat insulating materials.
2. Reflective heat insulation coatings and heat-resistant heat insulation coatings can be used in places where volume and weight are limited. (Recognized) 1mm thick reflective heat insulation coatings and high temperature heat insulation coatings reflect all heat About 90% to 95% of radiation is equivalent to a 10 mm thick styrofoam with an R value of 20.
3ã€Reflective insulation coatings and high temperature insulation coatings have excellent functions of moisture-proof and waterproof vapor, which can impede vapor condensation and prevent the oxidation of insulation surfaces (such as steel pipes, boilers, etc.). It is also important that The thermal insulation will not decrease when exposed to moisture.
Reflective insulation coating standard
At present, the standards for reflective thermal insulation coatings include JG/T235-2008 "Building Reflective Thermal Insulation Coatings", GB/T25261-2003 "Building Reflective Thermal Insulation Coatings", GJB1670-1993 "Reflective Coatings Specification", JC /T1040-2007 "Thermo-reflective Insulation Coatings for Building Exterior Surfaces" and the US ASTMC1483-04 Regulations for Solar Radiation Control Coatings for Building Exterior Use.
After GB/T25261-2003 "building reflective heat insulation coating" test, the test was:
1. The ratio of solar reflection of white reflective insulation coating is equal to or greater than 0.8;
2. Hemispherical emissivity of reflective thermal insulation coatings equal to or greater than 0.8;
After JG/T235-2008 "building reflective insulation coating" test, the test was:
1. The thermal insulation temperature difference of reflective insulation coating is equal to 10 degrees Celsius;
2. The thermal insulation differential attenuation of reflective thermal insulation coatings is equal to or less than 12 degrees Celsius;
After JC/T1040-2007 "heat-reflecting heat-insulating coatings for exterior surfaces of buildings", tests were conducted:
1. The impermeability of the coating is to maintain water impermeability for 30 minutes under a water pressure of 0.3 MPa;
2. Impact resistance is 50kg per cm;
3. There was no significant change in the salt fog environment within 4 hours.
Xiao Bian concludes: The principle and function of the reflective heat insulation coating standard and heat insulation coating are introduced here, and we hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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