Can epoxy coal tar fiberglass reinforce plastic achieve good corrosion resistance in the image?
Thread Content
The coating process is: 1 coat of primer — two layers of 0.2 mm thick glass cloth — 4 coats of paint. The thickness is required to be ≥0.6 millimeters. Inspection of the cured epoxy-coated coal fiberglass was carried out by using a putty knife to make cuts, in a manner parallel to the direction of the scratches. As can be seen from the image of the outer surface of the fiberglass, during the pulling process, the paint on the surface came off and fine cracks appeared; the paint layer lacked strength. Figure 2 shows the area near the metal surface; it can be seen that the adhesion between the fiberglass body and the primer is poor, resulting in obvious fabric-like patterns. It can be seen from the peeled fiberglass body that the glass cloth fibers are distinct.
Epoxy coal tar fiberglass reinforced plastic does not provide satisfactory corrosion resistance under this coating process. Due to the peeling of the outer paint coating, the presence of fine cracks, and poor adhesion between the fiberglass body and the primer, there are issues with the coating structure, which prevents it from adequately protecting the internal structure from corrosion. .