Causes of wood lacquer disease and its preventive measures
The surface of the paint film forms many uneven ridge marks, which affect the smooth and bright surface of the paint film.
(1) Reasons:
1. The surface is dry quickly and the coating film is not dry;
2, once painted too thick, only the surface is quickly dry, the inside can not be dry at the same time, the lower layer relaxes the upper layer tight;
3, the undercoat is not completely dried, that is, the upper layer is applied;
4. The upper and lower coatings are not matched;
5, the primer is not completely dry, and the thinner of the topcoat is too strong to make the primer swell;
6. The amount of curing agent added is too small;
7. The coating film was not fully polished in the previous pass, that is, the next coating was carried out.
(2) Preventive measures
1. Use a slower drying diluent and a solvent that is suitably soluble.
2, two or more times of painting, each spraying time should allow the solvent to fully evaporate.
3. After the underlayer film is fully dried, apply it again.
4. Use a matching coating to avoid softer coatings on the lower layer.
5, avoid coating too thick, the bottom layer should be thoroughly dried and then painted.
6. Appropriately increase the amount of curing agent added.
7. Polymerized dry film, sanding should be as full as possible after drying.
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