Use Painting Thickness Meter to Identify Fire-resistant Coatings
Due to the large amount of air and moisture in the air, spontaneous combustion occurs in many substances exposed to nature when the weather is dry. In addition, fires caused by human causes occur from time to time. We usually apply a layer of fire-resistant coating on the surface of some objects that are easy to ignite, which can better isolate external impurities and prevent combustion. This layer of fire-resistant coating requires a painting thickness meter to be more convincing force.
The classification of fire retardant coatings differs in their main properties. Different approaches are used for fire retardant coatings of different thicknesses. The appropriate thickness of the fire-resistant coating can maximize the fire resistance limit of the internal structure and can effectively delay the burning time in the event of a fire. Such a layer of fireproof coating will be painted on the surface of some appliances or metal steel parts that have been exposed to the external environment for a long time.
According to national standards, we often classify fire-resistant coatings into thick, thin and ultra-thin types. Generally speaking, they have some decorative and aesthetic properties, fire resistance and protection properties. It is just that the thickness will directly affect the pros and cons of various properties. Below we briefly describe the actual application of these three fire-resistant coatings.
The thickness required for thick fire-resistant coatings is generally 8 to 45 mm. The reliability of measuring with a painting thickness meter is very high. This fire-resistant coating is mainly made of inorganic materials, which is not easy to be ignited. The coating further enhances the pressure resistance of internal materials. Thick fire-resistant coatings can increase the fire resistance limit to 0.5 hours to 3 hours. The cost is relatively low, but the aesthetic effect is not strong. It is generally used in industrial building fire-resistant coatings.
Thin fire-resistant coatings can swell spontaneously after being attacked by high-temperature fire. It can also be applied to the surface of steel to significantly improve adhesion and water resistance. In the event of a sudden fire, the thin fire-resistant coating extends the time for the internal metal to warm up. Generally, we will control it from 3 to 7mm for thin fire-resistant coatings. The data displayed by the painting thickness meter is very accurate. In terms of fire resistance time, thin fire-resistant coating is generally about 2 hours, taking into account excellent fire resistance and decorative performance.
Compared with the other two, ultra-thin fire-resistant coatings are more decorative and malleable. Because the thickness of this fire-resistant coating is very low, it is very easy to forge and construct. Its actual thickness generally does not exceed 3mm. From the analysis of construction, the ultra-thin fire-resistant coating is very viscous and it is very easy to spray or brush. Due to its low thickness and strong performance, this ultra-thin fire-resistant coating has great development prospects. Most of the fire-resistant coatings currently on the market are of this type.
It can be seen that it is quite necessary to use painting thickness meters to identify different types of fire-resistant coatings. The thickness principle of the painting thickness meter independently designed and developed by Linshang Technology Co., Ltd. are: magnetic method and eddy current method principles. Whether it is laboratory measurement or engineering site measurement, the painting thickness meter developed by Linshang Technology can be used.
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