Fluorescent pigments are divided into inorganic fluorescent pigments (such as fluorescent pigments used on fluorescent lamps and anti-counterfeiting fluorescent inks) and organic fluorescent pigments (also known as fluorescent pigments): only substances with specific chemical structures can have fluorescent properties. And these fluorescent colorants themselves often have inherent deficiencies in properties such as light resistance and solvent resistance. One way to overcome these inherent shortcomings is to fuse them into the framework of polymer materials through chemical or physical methods, and then further process them into pigments. The polymer materials used for this purpose not only serve as solvents for fluorescent colorants, but also provide protection for fluorescent colorants, thereby endowing them with better light and solvent resistance properties.
Fluorescent pigments have excellent performance in coloring plastics, sols, paper products, color pastes, inks, paints, coatings, color masterbatches, chemical fibers, textiles, and more.
Under natural conditions, as well as in light conditions such as dawn, dusk, gray fog, and projection, fluorescent luster has much better visibility than traditional luster, can attract people's attention earlier and faster, hold this attention for longer, and greatly increase the chances of people looking back at their second or even third eyes. The characteristics of fluorescent pigments have gained increasing commercial interest and have gained widespread commercial applications.
The earliest and most widespread commercial application of fluorescent pigments was in various types of advertisements. From billboards inside and outside stores to giant advertisements on highways; From various product packaging to various magazine covers and advertising inserts, and so on. With the development of commodity economy and science and technology today, fluorescent pigments and their properties have been widely applied in more fields. For example, in terms of safety signs: firefighting and rescue vehicles, rescue facilities and equipment, construction sites, hazardous equipment, other industrial equipment and places, traffic signs, clothing for traffic workers, clothing for forestry workers and hunters, and so on.
In the fields of automation and high-tech, fluorescent pigments are also used for optical identification. For example, labeling, tracking and sorting documents, email rescue, etc. The dazzling fluorescent colors are increasingly used in almost all other fields where colors are used. For example, various children's utensils and toys, modern art, arts and crafts, fashion, and so on.
1. Application in plastic products
The main methods of use in plastic products include injection molding, extrusion, blow molding, kneading, and so on.
The main principle is to melt, disperse (dissolve) thermoplastic fluorescent pigments into plastic products at high temperatures.
The fluorescence of the product is related to factors such as the fluorescence of the fluorescent pigment itself, the compatibility between the fluorescent pigment and plastic products, and the temperature and time of the operating process.
2. Application in coatings, paints, inks, and color pastes
The use method of thermosetting fluorescent pigments: According to the production formula of coatings, paints, inks, and color pastes, the fluorescent pigments and other materials are added to a high-speed dispersion kettle for high-speed dispersion, preferably requiring sand grinding (or three rod grinding). Disperse (sand grind) before mixing paint (or ink). Finally, filter and package.
