Related Knowledge About Fire Protection Coatings
Fire-resistant coating mainly refers to dilute the fire-resistant coating with a certain liquid. And brush it on the surface of flammable materials to improve the fire resistance of the material. Fire-resistant coatings can prevent the spread of fire in a certain period of time. It can provide us with a certain time guarantee for fire fighting.
1. Why the fire coating can be fire resistant?
A large part of the reason why fire-resistant coatings are able to prevent fire depends on fire-resistant coatings. Fire-resistant coatings are inherently non-flammable, which can prevent the spread of fire or the speed at which objects burn. "Thermal conductivity" is another reason. Generally, the thermal conductivity of the fire-resistant coating is relatively low, which can increase the time for which the flame temperature is increased. Therefore, the rising time of the substrate temperature is lengthened to play a role of fire prevention.
Some special fire-resistant coatings are able to prevent fire because some special ingredients are added to the fire-resistant coating. When the fire-resistant coating is heated, the coating secretes an inert gas. Make the substrate difficult to burn or slow down the burning speed of the fire to play the role of fire prevention. The fireproof principle of the intumescent fireproof coating is mainly that the fireproof coating becomes thicker after being heated, thereby delaying the transfer of heat to the substrate.
2. Measure coating thickness with fire-resistant paint thickness tester
Regardless of the fire protection principle of the above fire protection coating, there is an important factor that will affect the fire protection effect, that is, the coating thickness. If the coating is too thick, the fire-resistant coating will easily fall off, so that the purpose of fire prevention cannot be achieved. If the fire-resistant coating is too thin, it will affect the fire protection effect. Therefore, it is important to measure the fire-resistant coating thickness with a fire-resistant paint thickness tester.
For the thickness measurement of fire-resistant coatings, it is recommended to use LS223 paint thickness tester. Linshang LS223 fire-resistant paint thickness tester uses magnetic thickness measurement and eddy current thickness measurement principles. The measurement range is very wide. Both the non-magnetic coating thickness on the magnetic coating and the non-conductive coating thickness on the non-magnetic coating can be measured. Linshang paint thickness tester can be used to measure automobile paint and pipeline paint. The Linshang paint thickness tester has high measurement accuracy (0-3000μm: ≤ ± (3% of reading + 2μm)) and the measurement data is guaranteed. The ruby probe makes the instrument more wear-resistant and prolongs the service life of the instrument. And this fire-resistant paint thickness tester requires no calibration, just a simple zero adjustment. You can start testing. Linshang paint thickness tester with simple operation is definitely your best choice for measuring fire-resistant coatings!
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