More coarse the bronze powder is,Guest Posting the stronger the experience of metal may be. And it turns into more flashing and brightness. If it is finer, experience of steel reduced, the color is gentler and hiding characteristic is higher.
Copper powder beneath mild stirring, ratings of times to 20 28 powder the copper powder inside the solvent of 1:1 or 2:1. Under low shear stirring for about 15 mins to a paste. Adding the specified tone gold oil, stir to combo flippantly. Solvent adjusted to the preferred viscosity. To avoid curling and breaking the flaky copper powder debris in the dispersion technique and decrease optical results, the first-rate preference of blade stirrer or disc scattered, medium-speed stir.
At the equal time need to avoid the usage of nitrocellulose and epoxy resin. Two may be Si chemical reaction to generate the jelly; together with the usage of those resin, it should be as an awful lot as possible within a quick time. Should be used anyplace viable the low acid cost of resin, the resin by the acid cost as low as feasible. Aromatic hydrocarbons and esters help to make the metal powder particles absolutely wetting to gain completely dispersed. It have to avoid the use of alcohol and ketone solvents and acidification incomplete lipid solvent. Be certain to apply high purity resin and solvent (low water content), containing a small amount of water endorsed the use of the molecular sieve to do away with the moisture before the copper powder pigments.
Copper powder in the milling procedure may be added fatty acids, to lessen friction and protect the copper from the oxide, copper powder surface of each fatty acid shielding layers. High temperature, water, sweat and alkaline media are very smooth to harm the protecting layer of copper powder surface, thereby permitting the gradual oxidation, gradually lose their steel luster.
Caused by copper powder gloss because the powder particle length distribution too large, too big percentage of first-class particulates (<3¼m), copper powder within the low and aligned bonding compound floating. Equal to the composition of bronze powder and import of copper powder has the identical hue and saturation. The choppy distribution of powder particle size is in thick scales, the surface cover price is smaller with low gloss.
The dedication of the bronze powder’s correspondence between wettability and floating deepens the know-how of mechanism of copper powder’s floating. And it proposes a new approach for upgrades of bronze powder’s floating overall performance. It affords a brand new technique for floor remedy of bronze powder (FCu 663). After the use of FSA on the surface modification of bronze powder, bronze powder’s floating and printed brightness are substantially progressed. It shortens the gap with imported powders. In the sprucing method of bronze powder, bronze powder pills had been flattened polished and has the fragmentation phenomenon. It reduces the overall performance of surface cowl fee’s modifications in line with the sprucing time.