One of the main reasons for the low gloss of domestic copper powder is its wide particle size distribution. The presence of too many fine particles can lead to an uneven surface, reducing the overall shine and reflectivity. Additionally, when compared to imported copper powders with similar compositions, domestic products often exhibit lower gloss levels due to differences in particle shape, surface texture, and uniformity.
While both domestic and imported copper powders may have comparable hue and saturation, domestic ones tend to show a less consistent appearance. They often have thicker scales, lower water surface coverage, and reduced luster, which affects their performance in applications requiring high-quality metallic finishes.
To address these issues, researchers have focused on understanding the relationship between wettability and floatability of copper powder. This has led to a deeper insight into the floating mechanism and the development of new surface treatment methods aimed at improving the performance of domestic copper powders. By applying FSA (Fluorinated Surface Agent) modification, the floatation ability and gold-like luster of copper powders have been significantly enhanced, narrowing the gap with imported alternatives.
In addition, studies have been conducted on the ball milling process using vibrating grinding techniques in laboratory settings, leading to the optimization of key parameters for producing high-quality copper gold powder. During the polishing stage, the copper gold powder sheets are flattened, polished, and sometimes broken, resulting in a noticeable change in the water surface hiding rate. This rate initially increases with polishing time but eventually decreases as over-polishing begins to damage the structure.
The main factors affecting the luster of copper powder include particle size distribution, surface treatment, and processing techniques. These elements play a crucial role in determining the final appearance and performance of metallic pigments.
Editor: Hardware Business Network Information Center
Source: http://news.chinawj.com.cn
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