How does gold powder printing maintain a long-lasting metallic luster?

The gold powder is actually copper-zinc alloy powder, which is composed of 60%-80% copper and 20%-40% zinc. This gold powder printing will not be dark after long-term exposure to air, and has good weather resistance and high temperature resistance. The touch of the printed pattern is also much better than that of the copper-zinc alloy powder. Q: How does gold powder printing maintain a long-lasting metallic luster?

The gold powder is actually copper-zinc alloy powder, which is composed of 60%-80% copper and 20%-40% zinc. This gold powder printing will not be dark after long-term exposure to air, and has good weather resistance and high temperature resistance. The touch of the printed pattern is also much better than that of the copper-zinc alloy powder.

Q: How does gold powder printing maintain a long-lasting metallic luster?

Answer: The gold powder used in fabric printing is actually copper-zinc alloy powder, which is composed of 60%-80% copper and 20%-40% zinc. In the case of a fully aqueous or semi-emulsified printing process, an antioxidant and a penetrant are generally added. The role of the antioxidant is to reduce the oxidation rate of the gold powder, preventing the formation of oxides on the surface of the gold powder particles to make the gloss dull or tarnish. Commonly used antioxidants are p-aminophenol HOC5H4NHCH3 (trade name is Mitol), benzotriazole, etc., and the general dosage is 1%. The penetrant helps to increase the brightness of the pattern. The commonly used penetrants include a diffusing agent NNO and a penetrating agent JFC, and the usual amount is 4%. At present, there is a gold powder made of a crystal coating material, which is composed of a special crystal as a core, and is coated with a brightness enhancement layer, a titanium film layer and a metallic luster deposition layer, and the light is generated by a titanium film layer, and its golden color is The color is caused by the deposition of special compounds on the outer layer. This gold powder printing will not be dark when exposed to the air for a long time, and has good weather resistance and high temperature resistance. The touch of the printed pattern is also better than that of the copper-zinc alloy powder.