With the deepening and improvement of China's housing system, for the new opportunities of the production and sales of architectural coatings, the development direction of architectural coatings is medium and high-grade latex paint. This coating is required to be scrubbed, rheological, brushable, and the like. And there is a higher update requirement for vision. Interior wall coatings must also be developed in a healthy manner. The development direction of exterior wall coatings is high anti-stain, self-emulsion and non-polluting latex paint. Relevant data show that the superior performance of ultrafine muscovite powder used in the preparation of the above paints has an irreplaceable effect on other inorganic fillers. This is because the mica flakes tend to be aligned parallel to the surface of the paint film, forming an inert and flexible protective layer against corrosion and sunlight. At the same time, after sealing the pores of the paint film with the tidal mica flakes, the uniformity of the stress in the coating can be improved, thereby enhancing the crack resistance, naphtha, acid and alkali resistance, surface smoothness, aesthetics, etc. of the paint film. . Mica has a strong matting and shielding function, which can reflect nearly 85% of ultraviolet light, so please use it carefully when making reflective coatings, mercerizing coatings and semi-gloss coatings. However, the experimental varieties were the same pigment base and the same formulation. The experimental test results show that the addition of mica to the architectural coating can indeed greatly improve the weatherability index of the coating.

The self-flaky structure of ultrafine mica powder and its excellent insulation, heat resistance, flexibility, tensile resistance, aging resistance, etc. make it a new development factor for the coating industry.

The general heat resistance range of silicone-based high temperature resistant coatings is 200 ° C - 400 ° C. If an appropriate amount of ultrafine mica powder is added to the ingredients, the substituents in the silicone resin and the OH groups in the muscovite are used. The reaction can obtain a temperature-resistant and radiation-resistant silicate coating having a heat resistance of 600 ° C or more. Another example is a metal-type thermal insulation coating with a mica powder as the main component developed in China, which has good suspension and coating properties and lubricity. The coating has strong adhesion and long service life, which can improve the surface roughness of the aluminum alloy casting.

According to relevant information, China has now entered the ranks of the world's top 10 shipping countries, with an annual total of 19.5 million tons of transportation, plus marine engineering, port facilities, civilian fishing boats, urban construction, etc., the demand for heavy anti-corrosion coatings. Increasingly, the annual demand is 180,000 tons. At present, China commonly used asphalt, polyurethane, organic zinc-rich coatings, mica powder, although it has good anti-corrosion properties, but the weatherability is not good. Therefore, it is imperative to develop a functional coating with good anti-corrosion performance and strong performance and no pollution to the environment. In the extensive use of aluminum powder paint, such as oil tank surface paint, floating aluminum paint is generally used alone for protection and anti-shield. The service life is about one year, the paint film is aging and cracking, but in the case of After adding 5-8% of mica powder, the paint film can remain unchanged for 5 years (the color is slightly dark). The cost of mica powder is much lower than that of aluminum powder. In some engineering primers (such as epoxy coal primer, organic zinc-rich primer), the ratio of zinc oxide: mica powder = 0.5:1 is added in a ratio of about 8%, while reducing precipitated barium sulfate and talcum powder. The partial dosage can significantly improve the anti-corrosion performance while maintaining the grinding property, and at the same time improve the anti-settling property of the coating. Some foreign manufacturers use the characteristics of mica powder chemical stability, strong adhesion, strong acid and alkali resistance, and excellent weather resistance. It is worth learning from the experience of using anti-corrosion coatings for ships.

Mica currently strives for the “4E” principle of the world's coatings development, namely, economy, energy, and efficiency. Based on these four principles, the structure of coating products is constantly changing and perfecting. Therefore, the search for raw materials and their processing equipment and process technology in line with the "4E" principle has become a common concern in the coatings industry. The application of scaly ultrafine mica powder as an inorganic filler in coatings is of great significance. . Its main application areas: building exterior coatings, interior wall coatings, powder coatings, anti-corrosion coatings, high temperature coatings, road marking paints, waterproof coatings, fire retardant coatings, etc.

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