The bronze powder is a floating flake pigment. With a certain ratio of copper, zinc and aluminum mix in melt milling, it meets to essential specifications Bronze powders colors are: red and gold, fresh gold, green and red gold, bronze gold and so on
Notes and use methods of bronze powder
More uncooked the bronze powder is, the stronger the comprehend of metal commit be. And it becomes fresh flashing and brightness If it is finer, sense of metal reduced, the color is gentler and hiding function is better
Copper powder below train stirring, myriad of times to the copper powder in the solvent of 1:1 or 2:1. Under low shear stirring for about 15 minutes to a paste. Adding the necessary tone gold oil, stir to mingle evenly Solvent adjusted to the desired viscosity. To lose curling and breaking the flaky copper powder particles in the dispersion process and impair optical effects, the best possibility of scalpel stirrer or vinyl scattered, medium-speed stir.
At the twin time should flee the use of nitrocellulose and epoxy resin Two bequeath be Si chemical reaction to establish the jelly; such as the use of these two resin, it should be as much as doable within a laconic circumstance Should be used wherever feasible the low acid value of resin, the resin by the tart value as low as possible. Aromatic hydrocarbons and esters aegis to make the metal powder particles completely wetting to obtain quite dispersed It should avoid the use of alcohol and ketone solvents and acidification imperfect lipid solvent Be sure to use big purity resin and solvent (low water content), containing a derisory figure of moisten recommended using the molecular sieve to extract the moisture before the copper powder pigments.
Copper powder in the milling process entrust be added fatty acids, to diminish friction and troops the copper from the oxide, copper powder surface of both fatty pungent protective layers High temperature, water, sweat and alkaline media are thumping attainable to pollute the protective layer of copper powder surface, thereby enabling the unpunctual oxidation, gradually elude their metallic luster
Caused by copper powder paint because the powder iota size distribution too broad, too substantial scale of fine particulates (.