Bronze Powder

Colorcom Bronze powder manufacturing process:

Bronze powder use copper, zinc as the main raw materials, through smelting, spray powder, ball grinding and polishing process of extremely slight flake metal powder, also called copper zinc alloy powder, commonly known as gold powder.
The characteristics of bronze powderBronze powder and forming of hueAccording to different composition, the copper alloy surface can show latosolic red, gold, white or even purple. The different zinc contents make the bronze powder different hue. Containing zinc is less than 10% produce pale gold effect, called pale gold; 10-25% produce rich light golden effect, called rich pale gold; 25% -- 30% produce rich light golden effect, called rich gold.Microstructure and particle size distribution of bronze powderThe bronze powder particles are flaky texture, under the observation of scanning electron microscopy, the flakes most are irregular,and its edges are zigzag shape, some a few is relatively regular circle. This particle structure makes it can arranged parallel with the painted objects.Bronze powder optical propertiesThe bronze powder has the angle- following color dissimilation effect, it is relate to the smoothness of the metal surface. The Microstructure, coating thickness and particle size distribution all plays a vital role to influence the glossiness of printing gold.
Notice for use bronze powder:Bronze powder has good floatability, and the floatability will decrease if add to any wetting agent or dispersing agent.If want to adjust the floatability of bronze powder, can decrease the floatability properly (add 0.1- 0.5% citric acid), but it will reduce the metallic effect.If adjust the applicable viscosity and drying time cannot achieve ideal optical effect (the bronze powder particles do not well directional arranged), can add a few surface lubricant and leveling agent.Generally, bronze powder has good redispersion. once precipitated,can add some anti- settling agent or thixotropic agent(<2.0%), like bentonite or fumed silica, etc.

Series of Colorcom common bronze powder
Parameters Series of environment-friendly water-based bronze powder:
Characteristics and application:
Colorcomwater-based bronze powder use silica and organic surface modifiers double-coated, make the film has uniform thickness, close-grained capability and do not influence metallic luster.During its long-term storage, water or alkali material is hard to permeate the coat, and no corrosion and color change. The water-based bronze powder is widely used in the water-based coatings system.
Parameters:
Grade
Shades
D50 Value(μm)
Water Coverage
(cm²/g)
Application
300Mesh
Pale gold
30.0-40.0
≥1600
The water-based bronze powder is widely used in plastic, silica gel, printing, textile printing, leather, toy, home decoration, cosmetic, crafts, Christmas gifts and so on.
Rich gold
400Mesh
Pale gold
20.0-30.0
≥2500
Rich gold
600Mesh
Pale gold
12.0-20.0
≥4600
Rich gold
800Mesh
Pale gold
7.0-12.0
≥4200
Rich pale gold
Rich gold
1000Mesh
Pale gold
≤7.0
≥5500
Rich pale gold
Rich gold
1200Mesh
Pale gold
≤6.0
≥7500
Rich pale gold
Rich gold
Special grade, Made upon request of customers.
≤80
≥500
≤70
1000-1200
≤60
1300-1800