Coating classification: intumescent fire retardant coating

Core tip: Product Introduction: Fireproof coating is to add pigments, fillers, fireproof fillers, plasticizers and others into main film-forming substances (paint base) A functional coating composed of auxiliaries, water or solvents, which can be used for the surface of combustible base materials, reduce the flammability of the surface of the coated base materials, prevent the flame from burning the base materials or play a role in the tissue spread and expansion of the base materials, so as to improve the fire resistance of the coated base materials This kind of coating has been widely used in construction, transportation, electrical appliances, military industry, chemical industry, textile, ancient architecture And cultural relics protection Fire retardant coatings are classified by mechanism: Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Coating House News: Product Introduction: fireproof coating is to add pigment, filler, fireproof filler, plasticizer and others into main film-forming substances (paint base) It is a functional coating composed of additives, water or solvents, which can be used for the surface of combustible base material, reduce the flammability of the surface of the coated base material, prevent the flame from burning the base material or play a role in the tissue spread and expansion of the base material, so as to improve the fire resistance of the coated base material This kind of coating has been widely used in buildings, vehicles, electrical appliances , military industry, chemical industry, textile, ancient buildings and cultural relics protection Fire retardant coating is classified according to mechanism: intumescent fire retardant coating, non intumescent fire retardant coating At present, the intumescent fire-retardant coating is divided into two types: organic type and non organic type At present, the water-based organic fireproof coating is widely used in the market Under normal conditions, the intumescent fire retardant coating can expand and form a uniform and dense honeycomb or sponge like carbon foam layer, which can insulate flame and object, prevent or delay combustion, so as to achieve the purpose of extinguishing fire and provide good protection for combustible substrate Fire retardant coating is generally composed of synthetic non combustible or refractory organic high polymer resin, which is modified by special group The resin itself can have a certain amount of flame retardant group and foaming group, and then a small amount of flame retardant, foaming agent, carbon source, etc are added properly to form a fire-retardant system At the same time, antimony white, titanium white, mica and asbestos are commonly used as pigments for fire retardant coatings, because these pigments have high heat emission efficiency and are also conducive to fire prevention Among them, antimony white powder has strong infrared reflection ability and can reflect heat in case of flame, so it is widely used in fire retardant coatings Fire protection mechanism: 1 The fire-retardant coating itself is flame-retardant or nonflammable, so that the protected substrate does not directly contact with the air and delay the ignition of the object or reduce the burning speed; 2 In addition to the flame-retardant or flame-retardant nature of the fire-retardant coating itself, it also has a low thermal conductivity, which can delay the transfer of flame temperature to the protected substrate; 3 Fire retardant coatings decompose non combustible inert gas by heating, dilute the combustible gases decomposed by the protected body, and make it difficult to burn or slow down burning rate; 4 nitrogen containing fireproof coatings are decomposed by NO and NHZZ3, and then decompose with chain reaction and reduce temperature; 5 intumescent fire retardant coatings are heated and expanded to form carbon foam insulation The layer is used to seal the protected object, delay the heat transfer to the base material, prevent the object from burning on fire or the strength reduction caused by the temperature rise Foaming mechanism: the effect of intumescent fire protection is mainly controlled by the following factors: the effect of heat insulation, the use of expanded carbon layer to prevent heat transfer; the expansion of heat absorption, the softening of the film at high temperature, melting, evaporation and expansion and the decomposition of carbon source absorb a large amount of heat; the insulation of oxygen, the formation of expanded carbon layer covering; The concentration of oxygen in the dilution air, the unburned gas is released 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,