Selection of Synthetic Resin for Powder Coating

The selection of synthetic resins is very important, and the structure and performance of synthetic resins are the main factors
the performance of
and coating of synthetic powder coatings. Therefore, it is important to put a good choice of synthetic resin this pass. Synthetic resins that can be
applied
powder coatings should have the following technical requirements
chinese
.
in powder coating construction applications, it is very difficult to control the heating temperature if the decomposition temperature and melting temperature of the resin are very close. Therefore, the temperature difference between the melting temperature and the decomposition temperature of the resin is required to be large. The structure of resin used in the thermostate powder must contain active ernogenous groups in order to form a mesh body structure during the baking of the film. The melting viscosity of the resin is required to be low, and it is hoped that its melting viscosity range is narrow, and when the melting point above the temperature is reached, the viscosity of the resin should decrease rapidly. In this way, the powder coating with electrostitive spraying, fluidized bed immersion and other methods applied to the coating on top of the coating can be made with a better leveling of the coating film.
the adhesion of the powder coating mainly depends on the resin to function. If the adhesion of the resin and the coating is good, then no primer is required, and the adhesion of the thermostover resin is better. Powder coatings are manufactured using mechanical crushing to obtain suitable particle size distribution and particle shape. Therefore, the resin is required to have a high melting point and glass temperature, so that it has a better crushing performance.
。