Colored sand is widely used in the field of construction, with bright colors, acid and alkali resistance, UV resistance, and no fading, winning the favor of many users. In order to further explore the excellent performance of natural colored sand, we have invited colored sand manufacturers to conduct a comprehensive analysis.

In terms of color fastness, natural colored sand exhibits excellent performance. Although there are two process routes for artificially synthesized colored sand - high-temperature sintering and chemical coloring, natural colored sand is superior in color stability due to its unique physical and chemical properties. High temperature sintering process, similar to ceramic coloring, although has good color fastness, uniform coloring, and bright colors, it faces problems such as carbonization oxidation, chemical bonding, and lattice quality changes that may occur in quartz sand and inorganic pigments at high temperatures, resulting in a decrease in product strength and pigment weather resistance. In addition, the current market price of sintered colored sand is relatively high, at 3300 yuan/ton, which also limits its wider application.

Chemical coloring process is a key technology for artificially synthesizing colored sand. This process uses highly weather resistant polyurethane resin as the carrier, combined with highly weather resistant inorganic pigments, to achieve overall penetration coloring of white quartz sand through chemical cross-linking. The strong adhesion of polyurethane makes the coloring effect excellent, even for stainless steel surfaces with dense structure and low surface tension, let alone quartz sand with higher porosity. Under the joint action of high-quality international brand inorganic pigments and PU carriers, fine-grained pigments can easily penetrate into the interior of quartz sand, achieving uniform and brightly colored coloring effects.

In addition, the weather resistance of colored sand is also highly concerned. The weather resistance of its color part mainly depen.