With the rise of the concept of energy saving and environmental protection, more and more buildings are no longer focused on construction quality alone. At the same time, they have also enhanced the additional performance of buildings. Reflective and thermal insulation coatings comply with the needs of the times and contribute to energy saving and environmental protection. praise. The following Xiao Bian took everyone to know about reflective heat insulation coating knowledge.
First, what is reflective insulation coating
Reflective insulation coating is composed of base material, heat reflecting pigments, fillers and additives. Heat insulation is achieved through the efficient reflection of sunlight.
Reflective insulation coating is a new type of temperature-reducing coating that integrates reflection, radiation and hollow bead insulation. The coating can reflect solar infra-red and ultraviolet rays in the range of 400nm to -2500nm, and does not allow the sun's heat to accumulate on the surface of the object. , And can automatically heat radiation cooling and cooling, heat the surface of the object radiated into space, reduce the temperature of the object, even in cloudy and night paint can also radiate heat to reduce the temperature, while the thermal conductivity in the paint into the very low The cenospheres are able to transmit heat energy to the inside 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 internal space of the object can maintain a constant temperature state. . Insulation and sunscreen coatings When the sun is strong, the coating can reduce the surface temperature of the object above 20°C, and it can be cooled above 3°C on cloudy days and nights, or it can be reduced to the same temperature as the atmospheric temperature.
The paint has very good waterproof and anti-leakage effect for the brushing of small cracked objects. The paint has a variety of colors to choose from. It can paint different colors of room temperature cooling paint according to different color requirements, and the other paint brushing is smooth and smooth. , Hydrophobic, self-cleaning performance is good, so at room temperature cooling coating is a new type of room temperature cooling energy-saving long-life coating, which is highly efficient cooling, thin layer, decoration, self-cleaning, waterproof, moisture-proof, anti-ultraviolet aging, acid and alkali, and anti-corrosion. Normal temperature cooling 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.
Second, reflective insulation coating classification
Thermal insulation coatings are architectural paints that have energy-saving effects. There are three main types of thermal insulation mechanisms.
1. Barrier thermal insulation coatings provide resistance to heat transfer to achieve thermal insulation. In the preparation of coatings, low thermal conductivity substances are mainly selected and air with low thermal conductivity is introduced after the coating is formed. Commonly used heat-resistant fillers are hollow glass beads, hollow ceramic powder, hollow fiber, sepiolite, vermiculite, perlite and so on.
2. Heat-reflective insulation coatings mainly reflect the spectral energy of sunlight in the range of 400-1800 nm. Its reflective material is a nanomaterial.
3. Radiant thermal insulation coatings mainly emit sunlight and heat absorbed into the air at a certain wavelength. The materials used are various metal oxides such as reflective spinel dopants such as ferric oxide, manganese dioxide, dicobalt trioxide, and copper oxide. It is also possible to combine the above-mentioned functions, such as thermal barrier coatings with barrier and reflection functions, as well as the development trend of thermal insulation coatings.
Third, the application in the field of construction engineering
Reflective thermal insulation coatings are mainly used in thermal insulation applications in the field of construction engineering, that is, the use of highly reflective thermal insulation coatings on the surface of the external protective structure can reduce the absorption of solar radiant heat from buildings and prevent the building surface from absorbing solar energy. Radiation-induced temperature increases, reducing the introduction of heat into the room.
Previously, the main application was to study roofing to reduce temperature rise and protect roofing waterproofing materials. In recent years, due to the emergence of new type glass beads with high-efficiency reflective materials in foreign countries and the promotion of commodities, the application of these coatings to the outer wall of hot summer and warm winter regions in southern China has been promoted. This type of paint is used in conjunction with the external wall insulation system, which has high energy-saving economic benefits.
Fourth, the prospect of reflective insulation coating
Reflective insulation coating has the dual function of decoration and heat insulation and is a functional coating. Since reflective thermal insulation coatings can significantly reduce the surface temperature of objects exposed to solar thermal radiation, this type of coating has rapidly expanded from aerospace applications to the petrochemical industry, food reserve industries, and so on. At present, this type of paint has begun to be applied in construction projects for the reflection and heat insulation of roofs and walls, and it has a rapidly increasing trend. The application of granaries is also extensive. With the full development of building energy conservation in the future, this type of paint will be valued and widely used.
The above is the introduction of reflective heat insulation coatings that Xiaobian brings to everyone. I hope to help you. If you want to learn more about the relevant knowledge, please continue to pay attention to the Qi Family Information Channel.
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