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Water-based intumescent fire resistive coating for steel structure
Water-based intumescent fire resistive coating for steel structure is applied on the surface of the building (structure) steel structure with water as a dispersing medium, expansion and foaming at high temperature, can form a fire-resistant thermal insulation protective layer to improve the fire resistance of the steel structure, the formation of fire-resistant thermal insulation protective layer of steel structure fire retardant coating.
The ultra-thin steel structure fireproof coating produced by our company has the following characteristics:
1. Excellent fire performance: the coating can expand rapidly when heated by fire, forming a solid refractory heat insulation barrier, with thin coating, high foaming rate, the formation of heat insulation bubble layer uniform and dense characteristics. Less than a millimeter of coating can expand into nearly 20 millimeters of foam insulation, and the uniform dense carbon layer increases the fire resistance of the steel structure.
2. Excellent environmental performance: the coating has the characteristics of high solid content and low VOC content, solid content up to 75%, small volatile amount of organic matter, environmental protection and safety, suitable for use in closed environments such as building rooms and ship cabins. The paint with water as the solvent, less volatile organic matter, low environmental pollution, to overcome the oil-based fireproof paint flammable and explosive, toxicity, transportation, storage and use of unsafe shortcomings, is conducive to environmental protection and production, construction personnel health and safety.
3. Excellent coating performance: The coating has the advantages of easy coating and strong adhesion while having high solid content.
4. Ultra-thin coating; reducing the load weight under the premise of ensuring the fire protection effect is of great significance in the field of aviation and aerospace, as well as in the use of ships and key parts.
5. Long service life; up to 20 years or more, the coating does not layer, does not crack, does not fall off
6. Good water resistance, traditional water-based expansion fire retardant coatings are generally not water resistant.
7. The maintenance period is short, the traditional fireproof coating maintenance period is generally about 60 days, and the maintenance period of the fireproof coating is generally within 7 days, which greatly saves the maintenance period of the coating.
| GT-NSP-Fp2.50-1C-HG Comparison of physical and chemical properties of fireproof coatings for indoor expanded steel structures | |||||
| No. | Physical and chemical properties | GB14907-2018 | Q/ HG001-2023 | Test report | Defect class |
| 1 | The state in the container | After stirring, it is in a uniform and fine state or a thick and thick fluid state, without agglomeration | Uniform and fine, no clumps | C | |
| 2 | Drying time (surface dry)/h | ≤12 | ≤8 | ≤5 | C |
| 3 | Initial drying resistance to cracking | Should not be cracks | No crack | C | |
| 4 | Bond strength /MPa | ≥0.15 | ≥0.20 | ≥0.39 | A |
| 5 | Compressive strength /MPa | \ | \ | \ | C |
| 6 | Dry density (kg/ m ³) | \ | \ | \ | C |
| 7 | Thermal insulation efficiency deviation | ±15% | \ | 一 | |
| 8 | PH Value | ≥ 7 | ≥ 8.23 | C | |
| 9 | Water resistance | After 24h test, the coating should have no lamination, foaming, falling off phenomenon, and the heat insulation efficiency attenuation should be less than 35% | No layer, foaming, falling off phenomenon, heat insulation efficiency attenuation Less than or equal to 35% | A | |
| 10 | Resistance to hot and cold cycling | After 15 times tests, the coating should have no cracking, peeling, foaming phenomenon, and the heat insulation efficiency attenuation should be less than 35% | No cracking, peeling, foaming phenomenon, heat insulation efficiency attenuation Less than or equal to 35% | B | |
| Note 1:A is a fatal defect, B is a serious defect, C is a minor defect; - indicates that there is no requirement. Note 2: Thermal insulation efficiency deviation is only used as a factory inspection item. Note 3: pH value is only applicable to water-based steel structure fire retardant coatings. | |||||
| GT-NSP-Fp2.50-1C-HG, means indoor water-based expansion type ordinary steel structure fireproof coating, the fire resistance is Fp2.50, the coating thickness is 1.5mm Less than or equal to 2mm user-defined code HG. | |||||
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