The cracking of the paint of the storage tank

Generally, in the process of using the storage tank, a layer of paint is applied to its surface. If you find that the paint has peeled off, you must pay attention to it. So what causes the paint to peel off in the storage tank?

The surface of the steel-lined plastic storage tank will be coated with a layer of paint, but we will find that the paint layer has cracked. What is the reason for this? Let's take a look with you.

Storage tank: Steel-lined plastic storage tank The paint layer of the steel-lined plastic storage tank falls off and cracks. The reason for the anti-corrosion coating on the surface of the steel-lined plastic storage tank is mainly epoxy asphalt anti-corrosion coating, which will delaminate under the action of the external environment. phenomenon of cracking. For the cracking of the paint film on the surface of the steel-lined plastic storage tank, the main reason is that the paint film shrinks improperly when it is drying and curing. Therefore, the problem of cracking paint on the surface of storage tanks cannot be ignored.

1. Relatively speaking, the humidity is too high, and the ventilation effect is relatively poor, so the surface will cure quickly, which will also cause cracking of the paint film;

2. The roughness of the tank surface is too low, especially on the weld bead, which often has uneven roughness;

3. The paint film on the surface of the steel-lined plastic storage tank is too thick during spraying. Under normal circumstances, if the thickness of the epoxy asphalt exceeds 120 microns, cracking will basically occur. Only by knowing the reason can we better carry out targeted prevention for steel-lined plastic storage tanks.

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