Fireproof coating can make a preliminary examination to the quality of the product on the spot: cut on the base material with already good construction take 2 ~ 3 small sample, or take a few sample besmear to go up in 2 ~ 3 150mm×150mm plywood, besmear brush by the circumstance of actual construction. After drying, check with the flame of an alcohol lamp. The flame height is about 40mm, and the time to apply the flame is generally 20min. Check the coating foaming situation. Below normal circumstance, press formulary dosage (it is 500 grams/square metre commonly) construction, the bubble layer thickness of coating of one class fire prevention is 20mm above, the bubble layer thickness of coating of 2 class fire prevention is 10mm above bubble layer answer even and dense.

Qualified Jiangxi youlinsheng fireproof coating by the blowtorch and other strong fire burning, will be a large number of foam expansion, surface aggregation raised, a few minutes will not appear within the phenomenon of burning damage, and fake and shoddy fireproof coating is not basically foaming, a large number of scattered slag situation, wood base material will soon occur combustion damage phenomenon.

Check whether the product has the qualified inspection report issued by the national fire control quality inspection center, or check online. Fire retardant coating carries out the fire control product type approval system, the fire retardant coating sold on the market should have the national fire control product type approval certificate and type inspection qualified report.

In the actual use, in order to ensure the fire prevention and other performance of fire retardant coating, generally need to use transparent coating. The amount of fire retardant coating is generally 350 ~ 500 grams/square meter, the amount of coating surface is generally 50 grams/square meter.

According to national standards, in addition to meet the requirements of fire resistance, fire retardant coating combustion performance is divided into a level and two. Under the specified experimental conditions, the fire-resistant time of the first class fire-resistant coating is not less than 20 minutes, the heat-resistant time of the second class fire-resistant coating is not less than 10 minutes. Users should pay attention to distinguish when choosing, guizhou fire coatings to avoid enterprises shoddy, not to achieve the effect of fire protection.
At present, according to GB14907-2002 "steel structure fireproof coating general technical conditions" classification, steel structure fireproof coating according to its coating thickness and performance characteristics can be divided into: ultra-thin, thin coating type and thick type three. Ultra-thin steel structure fire retardant coating (CB), the coating thickness is not more than 3 mm, thin coating of steel structure fire retardant coating (B class) of coating thickness is 3 ~ 7 mm, these two kinds of coating during a fire can heat expansion foam, the formation of foamy coking heat insulation layer, so as to prevent heat transfer to the steel structure, slow temperature rise of the steel structure, fire protection effect. Usually called these two kinds of coatings for steel structure expansion of fire coatings. Thick steel structure fireproof coating (H class) coating thickness is 7~45mm, they present granular surface, density is small, coating by heat is not foaming, rely on its lower thermal conductivity to delay the steel structure temperature rise, fire protection, fireproof limit can reach 0.5~3.0h, usually said this coating is steel structure fire insulation coating. The two coatings have different properties and are suitable for different occasions. All steel structure fire coatings are divided into indoor and outdoor two types of use.

Selection of fire retardant coating Jiangxi youlinsheng to the main problems are as follows: one is the ultra-thin steel structure fire retardant coating has become the research and production of fire retardant coating of steel structure unit to research hot spot, ultra-thin steel structure fire retardant coating for solvent system, commonly with thick and thin coated steel structure fire retardant coating, ultrathin steel structure fireproof coating decorative, better coating is thinner and engineering the usage has been greatly reduced, thus reducing the total engineering cost, is the varieties popularized on the market at present. However, in the steel structure fire protection project appeared the one-sided pursuit coating thinner and thinner phenomenon, the one-sided propaganda promotes the ultra thin coating phenomenon, this provides the practical reliable security safeguard for the building extremely disadvantageous. As a result of fireproof coating of ultrathin steel structure basically still depends on the physicochemical reaction of organic composition in recipe to have effect, any factor that affects coating carbonization to expand property to will affect its final fireproof performance, assure very hard still can provide fireproof protection of 2.0h above for component after besmear is longer.
Second, the designer is often a simple indication of the use of steel structure fire coating protection measures, can not elaborate on the selection of which type of steel structure fire coating, in the construction of simple consideration of price, beauty and other problems, resulting in improper selection of fire coating phenomenon. Third, the environment and the use of buildings are often ignored in the selection. Open-air steel structure by the sun and rain, or the top floor of the high-rise building when the upper part of the steel structure using transparent board, sunlight exposure, environmental conditions are relatively harsh, should choose outdoor steel structure fire retardant coating. Fourth, the technical performance only meets the indoor requirements of the coating for outdoor.