Powder coating powder layer is usually composed of synthetic resins, curing agents, pigments, fillers, additives and other materials.
Therefore, the selection of appropriate raw materials on the coating and coating performance has a great impact.
1, the selection of synthetic resin is an important factor affecting the coating performance and coating performance, that is, the structure and properties of synthetic resin.
Therefore, the synthetic resin must be chosen correctly.
In order to make the thermosetting powder resin into film, its structure must contain active functional group, so that it can form a network state when it is fired into film.
In the construction and use of powder coating, if the decomposition temperature of resin is similar to the melting temperature, it is difficult to control.
Therefore, large thermal decomposition and pyrolysis temperatures are required.
2, curing agent selection Curing agent to a large extent dominates the performance of thermosetting powder coating powder and film, it is an important measure of resin modification.
Therefore, it is very important to choose the right curing agent.
At room temperature is a solid, namely powder, granular or flake.
It has the characteristics of a latent curing agent.
That is, in the process of production or storage, different resins or other components of the chemical reaction also do not agglomerate.
3. Selection of pigments and fillers.
4. Selection of auxiliaries.
Points for attention:
1. Keep away from fire and avoid direct sunlight. It should be placed in a well-ventilated place with a temperature below 35°C.
2. Avoid storing in places easily contaminated by water, organic solvents, oil and other materials.
3. Safety of painting construction site.
4. The equipment used in painting operation should be well grounded to eliminate static electricity.
5, avoid the coating machine gratuitous discharge phenomenon.