What is the role of additives in the production process of powder coatings

colors are colorful, color tools are also very many, for this point many people are clear, different colors, for material works are
important,
powder coatings
production process, additives are also very important.
1. The compatibleity of powder coating additives with resins
this is a priority when selecting additives, additives must be stable in the powder coating for a long time in order to play their due effectiveness. Therefore, the general use of additives with epoxy, polyester, acrylic and other resins have a good compatible
chinese
. Then usually compare the compatibleness of powder coating additives with resins, using methods based on the similarity of their structure.
, for example, the choice of leveling agent is divided into one is carrier, one is carrierless. If there is a carrier E-12 as a carrier can not be applied to pure polyester system formula. As is often used in the B68 chemical anti-light agent only applicable to the system of epoxy
,
is used in other systems, not only lose its due effect, but also to the coating film has a negative impact.
2. The adaptability of powder coating additives to the production process
Some powder coating additives in the formulation design, due to the production process conditions are more demanding, may be high temperature, low temperature, high-speed shearing and other conditions, resulting in the decomposition of powder coating additives, volatilization and failure, resulting in formula failure. Such as some pattern powder coating additives, can not be extruded by the extruder together with the base material, but then added to the finished powder, only in this way can show its due pattern, because in the extrusion melting process
,
pattern additives have been pre-reacted to complete
,
caused in
into the film when no pattern appears.
3 Powder Coating Additives versatility in powder coatings
Some powder coating additives play a dual or multiple role in addition to their primary role. As a result, you must consider a combination of recipes, such as provisioning or simplifying formulations.
For example, zinc oxide is a common chemical, it can replace a part of the titanium dioxide as a white pigment, while having a certain electrical conductivity, used in the need for anti-static or conductive occasions, but also has the function of shielding ultraviolet rays, especially in the (240 to 380) range of UV light has a better protection, of course, it also has anti-mold, bactericidal effect, improve the properties of coatings containing nicotin-based group resin. It can be seen that the choice of an effective additive is to fully understand its various functions.
powder coating additives have a certain impact on the performance of powder coatings, and after some necessary processes, from which you can find out how the performance of additives, the effect is good or bad.