Introduction of fire-retardant coating
Fire-retardant coating is used on the surface of combustible substrate to change the burning characteristics of the surface of the material and prevent the fire from spreading rapidly; Or a special coating applied to building components to improve the fire resistance limit of components, called fire retardant coating. Fire-retardant coatings can improve the fire resistance of materials, slow down the spread of flame, or prevent combustion in a certain period of time by brushing the coatings on the surfaces of flammable materials. This kind of coatings is called fire-retardant coatings or flame-retardant coatings.
Principle of fire-retardant coating
The fire-retardant principle of fire-retardant coating can be roughly summarized as the following five points:
(1) The fire-retardant coating itself has flame retardancy or incombustibility, which prevents the protected substrate from directly contacting with air, delays the ignition of the object and reduces the burning speed.
⑵. The fire retardant coating not only has its own flame retardancy or incombustibility, but also has a low thermal conductivity, which can delay the transfer of flame temperature to the protected substrate.
(3), the fire retardant coating is heated to decompose incombustible inert gas, which dilutes the combustible gas decomposed by the protected object and makes it difficult to burn or slow down the combustion speed.
(4) The nitrogen-containing fire retardant coatings are heated to decompose NO, NH3 and other groups, which combine with organic free radicals to interrupt the chain reaction and lower the temperature.
(5) The intumescent fire retardant coating expands and foams when heated, forming a carbon foam thermal insulation layer to seal the protected object, delaying the transfer of heat to the substrate, and preventing the object from burning or the strength from decreasing due to temperature rise.
types of fire-retardant coatings
There are many types of fire-retardant coatings, but according to the application objects and coating thickness of fire-retardant coatings, they are generally divided into decorative coatings and steel structure fire-retardant coatings.
decorative fire retardant coatings are generally used as protective materials for combustible substrates, which have certain decorative and fire resistance, and can be divided into two categories: water-based and solvent-based. Fire retardant coatings for steel structures are mainly used as protective materials for incombustible components. Because of their thick coating, low density and low thermal conductivity, they have excellent thermal insulation performance, and can be divided into organic fire retardant coatings and inorganic fire retardant coatings.
What brand of fire retardant coatings is good
What brand of fire retardant coatings is good 1. Akzo Nobel Group, Akzo Nobel (China) Investment Co., Ltd., the top ten brands of coatings in the world, and the top ten brands of fire retardant coatings, founded in 1969, are among the Fortune 5 companies in the world, one of the largest functional coatings manufacturers in the world, and the leading industrial enterprises in the world. One of the world's largest suppliers of paints, coatings and chemicals
What brand of fire retardant coatings is good 2. Lanling
Jiangsu Lanling Chemical Group Co., Ltd., top ten brands of fire retardant coatings, national protected trademarks, famous trademarks of Jiangsu Province, famous brands of Jiangsu Province, national key high-tech enterprises, major coating manufacturers and famous manufacturers of steel structure production
What brand of fire retardant coatings is good 3. Champion
Jiangsu Champion Coating Technology Group Co., Ltd., Top ten brands of fire-retardant coatings, well-known trademarks in China, famous trademarks in Jiangsu Province, famous brands in Jiangsu Province, China 5 most valuable brands, high-tech enterprises specializing in research and development and manufacturing of various coatings and paint products
What brand of fire-retardant coatings is good? 4. Shenggong
Shandong Shengguang Chemical Group Co., Ltd., Top ten brands of fire-retardant coatings, famous trademarks in Shandong Province, famous brands in Shandong Province, brands with industry influence, and green products in China building materials, with stable quality and qualified consumers' confidence. National Torch Key High-tech Enterprise
What brand of fire retardant coatings is good? 5. King Kong DMD
Fujian Huaqiang Coatings Industry Co., Ltd., top ten brands of fire retardant coatings, national Torch Project, famous trademarks of Fujian Province, famous products of Fujian Province, famous trademarks of Quanzhou City, national key new products, famous products of Chinese township enterprises, High-tech enterprise integrating scientific research, production, sales and construction
What brand of fire retardant coating is good? 6. Huili coating
Shanghai Huili Group Co., Ltd., Shanghai Huili coating Co., Ltd., top ten brands of fire retardant coating, national protected trademarks, Shanghai high-tech enterprises, Shanghai famous trademarks, Shanghai famous brand products and China 5 most valuable brands. Enterprises specializing in the production of new building materials products
What brand of fire retardant coatings is good 7. Jinyu
Beijing Jinyu Coatings Co., Ltd., top ten brands of fire retardant coatings, well-known brands of decorative materials, large-scale coating enterprises under Jinyu Co., Ltd., national key new products, excellent suppliers of Bird's Nest, Enterprises specializing in R&D, production and construction technical services of building decorative coatings, fire-retardant coatings, special coatings and other products
What brand of fire-retardant coatings is good 8. Yongxin
Northwest Yongxin Coatings Co., Ltd., top ten brands of fire-retardant coatings, famous trademarks in Gansu Province, national large-scale second-class enterprises, national designated suppliers of military coatings, national excellent, departmental excellent and provincial excellent products, products that are satisfactory to users all over the country, Enterprises specializing in the research, development, production and sales of coatings/paints
What brand of fire-retardant coatings is good 9. Tianhu Yejian New Materials Co., Ltd., the top ten brands of fire-retardant coatings, well-known trademarks in China, famous trademarks in Jiangsu Province, famous products in Jiangsu Province, key enterprises of Changzhou national coating characteristic industrial base of the Ministry of Science and Technology, and designated supporting factories of military enterprises, Jiangsu high-tech enterprises
What brand of fire retardant coatings is good? 1. Orvis
Henan Orvis Technology Group Co., Ltd., the top ten brands of fire retardant coatings, a large group company with diversified development, multi-field cooperation and cross-industry operation, a national high-tech enterprise, and a product research and development base of the Fire Research Institute of the Ministry of Public Security. Undertaking national key tunnel projects and provincial and municipal key projects for many times
Mistakes in selecting fire-retardant coatings
Avoiding mistakes in selecting suitable fire-retardant coatings: Different materials in different spaces have different performance requirements for fire-retardant coatings, so you can ask experienced shop salesmen when purchasing coatings, and use suitable fire-retardant coatings in suitable places to achieve the best fire-retardant effect.
Misunderstanding 1
Applying fire retardant coatings for wood structures to steel structures
Because fire retardant coatings for wood structures and steel structures are unrecognizable with naked eyes, consumers must know the detailed properties of fire retardant coatings when purchasing. If the fire retardant coating of wood structure is used in steel structure, its adhesion will be greatly reduced, and it will fall off easily, so the fire safety cannot be guaranteed.
Myth 2
There is no distinction between solvent-based and water-based fire retardant coatings
There are two kinds of fire retardant coatings for steel structures, solvent-based fire retardant coatings and water-based fire retardant coatings. From the point of view of adhesion, solvent is greater than water. Therefore, solvent-based fire retardant coatings should be used for outdoor steel structures, and solvent-based or water-based fire retardant coatings can be used for indoor steel structures.
some domestic manufacturers produce fire-retardant coatings, which will decompose toxic gases in case of fire. If this coating is used in fire-resistant electrical products, toxic gas will be released in case of fire. For example, G6 perchloroethylene fire retardant coating which has been eliminated will decompose toxic chlorine gas in case of fire, so it cannot be used.
the quality of fire-retardant coating construction also has an impact on the fire-retardant performance of materials, so it is necessary to pay attention to the coating quality of fire-retardant coatings. The painting methods of different fire retardant coatings are slightly different, but the basic construction points are the same.