No. | Test item name | Standard Requirements and Standard Terms Number | results of testing | This conclusion |
1 | The status in the container | After stirring, it is in a homogeneous liquid state or a thick fluid state without agglomeration. | After stirring, it became a homogeneous liquid without caking. | qualified |
2 | Drying time (dry) | ≤12h | 8h | qualified |
3 | Initial dry crack resistance | Allow 1 to 3 cracks, the width should be ≤ 0.5mm. | No crack | qualified |
4 | Bond strength | ≥0.15MPa | 1.13MPa | qualified |
5 | Heat resistance | ≥ 720h coating layer should not rise, shedding, emptying, cracking phenomenon. Additional resistance to performance requirements. | The 720h coating has no layering, shedding, hollowing and cracking. Meet the requirements of additional fire resistance. | qualified |
6 | Hot and humid resistance | ≥ 504h coating should be no layer, off phenomenon. Fire performance requirements should be met. | The 504h coating does not have layers or peel off. Meets additional fire resistance requirements。 | qualified |
7 | Freeze-thaw cycle resistance | ≥ 15 times the coating should be no cracking, falling off, blistering. It should also meet the requirements for additional fire resistance. | The 15th coating had no cracking, shedding, or blistering. Meet additional fire resistance requirements. | qualified |
8 | Acid resistance | ≥ 360h coating should be free layer, off, cracking phenomenon. It should also meet the requirements for additional fire resistance. | The 360h coating has no layers, shedding, cracking. Meet additional fire resistance requirements. | qualified |
9 | Alkali resistance | ≥ 360h coating should be free layer, off, cracking phenomenon. It should also meet the requirements for additional fire resistance. | The 360h coating has no layers, shedding, cracking. Meet additional fire resistance requirements. | qualified |
10 | Salt spray corrosion resistance | ≥ 30 coatings should be free of blisters, obvious deterioration, softening. It should also meet the requirements for additional fire resistance. | Thirty times the coating had no blistering, obvious deterioration and softening. Meet additional fire resistance requirements. | qualified |
11 | Fire resistance | When the coating thickness is not more than (5.0±0.5) mm, the fire resistance limit should not be less than 1.0h. Fire resistance limit judgment: Loss of carrying capacity - The maximum deflection of the coated steel beam is L0/20 (L0 is the span of the steel beam in mm). |
The actual coating thickness was 4.5 mm and the fire resistance test was carried out for 150 min. Fire resistance is equal to 2.5h. |
qualified |