Steel structure fire retardant coating is a kind of coating that can protect steel structure from being damaged by heat in fire. Its function is to prevent steel structure from losing bearing capacity at high temperature, thereby delaying the spread of fire and reducing the loss of fire to people and property. Fireproof coatings for steel structures are widely used in large public buildings such as industrial buildings, commercial buildings, gymnasiums, and high-rise buildings.
Detection performance and instrument
| key performance | equipment |
|---|---|
| thickness | Thickness Gauge |
| Fire resistance time | Hot plate method equipment |
| Heat Stability | hot air circulation furnace |
| Adhesion | Adhesion Tester |
| density | Density meter |
| pH value | pH meter |
| UV resistance | UV Radiation Equipment |
| Anti-corrosion performance | Salt spray Test Chamber |
Detection steps
The following are the specific detection steps:
Thickness: Use a Thickness Gauge to test the thickness of the coating, the test points should be evenly distributed on the coating surface, and record the test results.
Fire resistance time: use the Hot Plate method equipment to test the coating. The test method is to apply the coating on the Hot Plate, heat the Hot Plate, and record the time required for the coating to lose its bearing capacity.
Heat resistance and stability: The coating sample is placed in a hot air circulation furnace for testing. During the test, the surface temperature and appearance of the coating need to be observed to evaluate its heat resistance and stability.
Adhesion: Use an adhesion testing machine to test the paint sample to obtain its adhesion parameters to evaluate its adhesion ability.
Density: Use a densitometer to test the density of the coating. During the test, attention should be paid to eliminate the interference of air bubbles to ensure the accuracy of the test results.
pH value: Use a pH meter to test the pH value of the paint. During the test, the paint sample needs to be mixed with water before testing to ensure the accuracy of the test results.
Anti-ultraviolet performance: Use ultraviolet radiation equipment to test the coating. During the test, the surface color and appearance of the coating need to be observed to evaluate its anti-ultraviolet performance.
Anti-corrosion performance: Use the salt spray Test Chamber to test the paint samples. During the test, the paint samples need to be placed in the salt spray Test Chamber to observe whether there is corrosion on the surface of the coating to evaluate its corrosion resistance.
