General knowledge of coating: introduction to classification of fire retardant coating for steel structure

Core tip: fire retardant coating for steel structure is sprayed on steel members, which acts as a barrier for steel members, prevents heat radiation and has high-efficiency fire and heat insulation protection function This kind of fireproof coating is mainly suitable for the fire protection of large load-bearing steel structure, surface and small steel bar, steel grid and other non load-bearing steel structure in the steel structure building of industrial workshop, gymnasium, waiting hall, high-rise building, etc Steel structure fireproof coating has formed many varieties and series There are thick coating type, thin coating type and ultra-thin type developed in recent years in terms of type: in terms of application scope, there are also outdoor and indoor types Thick fireproof coating is also called non Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Coating home news: steel structure fire retardant coating is sprayed on steel members, which plays a role of barrier, heat radiation prevention and efficient fire and heat insulation protection This kind of fireproof coating is mainly suitable for the fire protection of large load-bearing steel structure, surface and small steel bar, steel grid and other non load-bearing steel structure in the steel structure building of industrial workshop, gymnasium, waiting hall, high-rise building, etc Steel structure fireproof coating has formed many varieties and series There are thick coating type, thin coating type and ultra-thin type developed in recent years in terms of type: in terms of application scope, there are also outdoor and indoor types Thick fire retardant coating, also known as non expansion fire retardant coating, its main component is inorganic thermal insulation material, which will not expand in case of fire, and has good thermal insulation Nonexpansive fire retardant coating, which uses the good heat insulation inherent in the coating, and the heat absorption generated by ablation reactions such as evaporation and decomposition of some components under high temperature, to block and consume the heat transfer from fire to the base material, thus delaying the time when the steel members reach the critical temperature The thickness of non expansive fire retardant coating is generally 7-50mm, and the fire resistance limit can reach 0.5-3h Non intumescent fire retardant coating is generally non combustible, non-toxic, aging resistant and reliable, which is used in permanent buildings At present, there are two kinds of non intumescent fire-retardant coatings applied by wet spraying: one is a two-component packaging coating with perlite as the aggregate and water glass as the binder, which is applied by spraying; the other is a one-component packaging coating with expanded perlite as the aggregate and cement as the binder, which can be sprayed or applied only by adding water and mixing well on site Because the fireproof coating can be applied by hand, the coating surface can be smooth and flat Thin coating steel structure intumescent fireproof coating is relative to post coating type, this kind of coating is also called intumescent decorative coating or intumescent putty This kind of steel structure coating is generally composed of suitable latex polymer as base material, flame retardant and additives Ultra thin intumescent fireproof coating for steel structure refers to the fireproof coating with the thickness of less than 3mm, which is mainly solvent type and has good decoration and physical and chemical properties When exposed to fire, it expands and foams to form a dense and high-strength fireproof insulation layer The fireproof insulation layer greatly delays the temperature rise of the protected steel and improves the fire resistance limit of steel structure components It is a new type of fireproof coating Because of its thin coating, the amount of fire-retardant coating used in the project is greatly reduced compared with that of thick steel structure, thus reducing the total cost of the project, and making the steel structure get effective fire protection, which is the brand vigorously promoted by the fire department at present However, compared with developed countries, the current ultra-thin steel structure fire retardant coating has the advantages of low fire resistance, thick coating thickness, complex formula composition, easy failure of products, and its quality is not up to the foreign good ultra-thin steel structure fire retardant coating products Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,