If the polyurethane edge sealing rock wool sandwich panel is used for a long time, it will explode paint. Then, any phenomenon has its own reasons and reasons. First of all, we must understand the causes of paint explosion so as to give corresponding solutions. The reasons for the paint explosion of polyurethane edge sealing rock wool sandwich panel are as follows:
1. Add passivation solution before adding water when preparing the tank. Due to the density of the passivation liquid, for example, when the density of the passivation liquid is higher than that of water, the raw materials will be mixed unevenly, and the adhesion between the passivation layer and the substrate will be poor, which is very easy to cause paint explosion on the surface of the polyurethane edge sealing rock wool sandwich panel.
2. In addition, the passivation plate temperature production process stipulates that the passivation plate temperature should be checked every two hours, because the staff did not track the passivation plate temperature regularly during the inspection. Especially in winter, the temperature changes greatly within 2 hours, which will cause the aging of polyurethane edge sealing rock wool sandwich panel, and scratch and paint drop during pressing.
3. In the production process of polyurethane edge sealing rock wool sandwich panel, there is dust on the exit inspection mirror and some rollers. The dust will directly affect the surface quality of polyurethane edge sealing rock wool sandwich panel. It may not appear at the beginning, but once it is long or exposed to the sun, the paint will explode.
