Technology for the application of metal pigments.

Metal effect powder coating (referred to as metal powder) in the whole decorative coating application is wide, is currently the mainstream of fine art powder. There are many kinds of metal pigments that can be used in powder coatings, which can be divided into four categories, namely aluminum silver powder pigments, pearlescent pigments, copper and gold pigments and other metal pigments (e.g. nickel powder, stainless steel powder, etc.). Each type of metal pigment also contains a lot of color products, applied to the powder, it makes the powder colorful, greatly enriched the variety of powder coatings and decorative

. Metal powder is now mainly used in indoor and outdoor metal furniture, lamps, handicrafts, smoke machines, strollers, sports equipment and other industries.
should we pay attention to when using powder technology? There's still something to be said for it.
First aluminum powder divided into floating silver and non-floating silver, fine silver and silver, floating aluminum powder as far as possible not to be used to require alkali-resistant occasions, uninsured fine silver and silver can not be used in outdoor products, and easy to oxidize black color, ordinary copper and gold powder, pearlescite pigments are not temperature-resistant, should be tested before application. According to the existing experience, aluminum powder and copper and gold powder as far as possible to choose imported products, so as to better ensure the stability of powder quality.
In terms of formulation adjustment should note:
01 in the flat metal powder, to fully show the metal effect, should appropriately improve the proportion of resin in the base powder, the amount of leveling agent can also be appropriately increased, fillers are best to choose vanadium sulfate, and the finer the particle size the better.
02 the extrusion process must prevent the production of small depressions, this is due to the formula resin is too high, low viscosity, easy to be disturbed, otherwise in the mixing of metal powder will appear flowering spots.
03 With transparent or translucent powder as the base, after adding metal powder, we should pay attention to the cover capacity of the metal pigment, the cover force is insufficient, when spraying complex work pieces, it is prone to cross or corner outcry problems.
04 Under normal circumstances, the amount of metal pigment addition has a certain limit, floating aluminum powder should be less than 1%, non-floating aluminum powder can be added in a higher proportion (2% to 5%). The amount of pearlesium pigment should be less than 3%, and the amount of copper and gold powder is similar to that of non-floating aluminum powder, the addition ratio is allowed to be higher.
05 Metal pigments should not be used after moisture lumps.
06 Hammer-type metal powder, before development or production, should know more about the customer's work parts shape, thickness and baking conditions, according to the customer's specific situation to adjust the pattern, otherwise there will be inconsistent with the customer's requirements of the pattern.
07 base powder should be added to the appropriate amount of wax to increase the coating's scratch resistance.
08 Except for special requirements, metal pigments should not be squeezed out with the base powder as much as possible, which will seriously damage the metal effect.
.