​Green Mica powder gives engineering machinery coating a green and sustainable anti-corrosion experience

The rapid development of the construction machinery industry has prompted the gradual alignment of construction machinery coatings with international standards in terms of product structure, technical level and coating process, and the production and sales volume has also increased significantly. According to data, since 2011, China has become one of the countries with the largest production and sales of construction machinery in the world.

Construction machinery coatings are paints painted on the surface of construction machinery and various machine parts. Their main functions are: 1. Anti-rust protection, extend the life of the entire machine, and reduce losses and processing costs caused by rust between processes; 2. Obtain a beautiful appearance and enhance market competitiveness; 3. Convenient for users to use and maintain.

Construction machinery coating classification

According to the coating, it can be divided into primer, middle coat and top coat. Mechanical components primer medium coating topcoat thin plate parts Epoxy cathode electrophoresis coating--acrylic/polyurethane topcoat Epoxy cathode electrophoresis coating Polyurethane (epoxy) medium coating powder coating Structural parts Two-component epoxy primer Polyurethane (epoxy) medium coating acrylic/polyurethane topcoat Modified alkyd primer--modified alkyd quick-drying magnet paint Two-component epoxy primer--polyurethane topcoat--polyurethane topcoat--polyurethane topcoat---bottom-in-one coating Polyurethane powder coating------table: Coatings and supporting systems mainly used in engineering machinery

Primer is a basic coating applied to the surface of an object to base the base. Construction machinery, especially large-scale construction machinery, generally operates open-air operations, directly contacting air, moisture, and impurities, and withstand wind and sun exposure. Some construction conditions are harsh, and the adhesion and corrosion resistance of the coating film mainly rely on this layer of primer.

Primer is the prerequisite for the durability and beauty of the topcoat. The corrosion resistance of the coating is crucial to the use cycle of the construction machinery and a good appearance. Its main performance tests include standards and methods related to coating water resistance, oil resistance, heat resistance, salt water resistance, etc. The mechanical properties of primer mainly include impact strength, hardness, adhesion, flexibility and other properties. If the mechanical properties of the primer are not very good, the coating film will easily be destroyed during the production, shipment and work of parts or machinery, thus losing the corrosion resistance of the primer. The quality of construction performance will also affect the production efficiency, cost and appearance of construction machinery. The construction performance of primer is mainly reflected in surface drying, hard work, leveling, coating hiding power and construction adaptation period. If the primer drying time is too long or a very high drying temperature is required, it will affect the spraying time of the next coating, thereby increasing the construction cost: poor leveling of the primer will lead to uneven surfaces after the coating film is dried, and there may be problems such as low gloss, orange peels, and poor freshness when spraying the topcoat.

Middle coating is a coating that connects the primer and the topcoat. The main function is to fill the bottom substrate and isolate the defects of the primer layer, so as to improve the plumpness and vividness of the topcoat coating, enhance the adhesion of the topcoat to the coating, increase the thickness of the entire matching coating, and improve the water resistance and corrosion resistance of the entire coated object. It is required to have a strong bonding force with the upper and lower coatings; the coating hardness is moderate, and the solvent of the topcoat cannot "bite" the coating, and it must have good water and moisture resistance, will not cause the topcoat to blister, and the grinding performance must be good, it can dry at an appropriate high temperature, and when drying and turning on, it must not stick to sandpaper, and has good drying properties.

For parts with low decorative requirements and areas with good surface flatness of the substrate, they can be sprayed without spraying, thereby reducing the cost of engineering machinery products.

Topcoat is the "overcoat" of engineering machinery products. Topcoat can make engineering machinery have a high gloss, rich colors, and give people a sense of beauty. The effect of the topcoat directly affects customers' judgment on the quality of construction machinery products, so the appearance color and effect are being paid more and more attention. Mainly consider the following aspects: protection, decorativeness, and construction.

The engineering machinery coating system with mica powder can enable various facilities and equipment to operate safely and reliably for a long time in corrosive environments (service life in C4/C5 environments) and protect the appearance.

Performance advantages of mica powder in engineering machinery coatings:

Unique sheet structure: adjust the internal stress of the coating, improve the continuity, density and excellent mechanical properties of the paint film, increase the rigidity of the coating; shield/barrier water vapor, chemical substances, etc.; outstanding crack resistance;

Excellent chemical inertia: improve corrosion resistance of neutral salt spray, acid, alkali and other corrosion resistance; use with anti-rust pigments to improve corrosion resistance and reduce costs;

Unique high temperature resistance: high temperature resistance up to 600 degrees;

UV shielding function: improves the weather resistance of the paint film and makes the paint surface color lasting as new;

Application Suggestions 1:

Application of GF-2 in engineering machinery primer

Addition: 5%-15%;

Typical features: adjust the internal stress of the coating, improve the continuity, density and excellent mechanical properties of the paint film, increase the adhesion and rigidity of the coating; shield/barrier water vapor, chemical substances, etc.; improve the corrosion resistance of neutral salt spray, acid, alkali, oil and other corrosion resistance, and use it in conjunction with anti-rust pigments to improve corrosion performance and reduce costs; outstanding crack resistance; high temperature resistance up to 600 degrees;

Application Suggestion 2:

Application of GM-3 in coating in engineering machinery

Addition: 5%-15%;

Typical features: Give the medium coating excellent adhesion and fullness; shield/block water vapor, chemical substances, etc.; improve corrosion resistance of neutral salt spray, acid, alkali, oil and other corrosion resistance, and use it with anti-rust pigments to improve corrosion resistance and reduce costs; outstanding cracking effect; high temperature resistance up to 600 degrees;

Application recommendation 3:

Application of GRIC GD-3 in engineering machinery topcoat

Addition amount: 5%-10% (adjust according to the specific requirements of gloss);

Typical features: outstanding protective performance: adjust the internal stress of the coating, improve the continuity, density and excellent mechanical properties of the paint film, increase the rigidity of the coating; shield and block water vapor, chemical substances, etc.; improve the weather resistance of the paint film, so that the paint surface color will last for a long time; improve the corrosion resistance of neutral salt spray, acid, alkali, oil stains and other corrosion resistance, and use it in conjunction with anti-rust pigments to improve corrosion performance and reduce costs; high temperature resistance up to 600 degrees; Decoration: outstanding crack resistance, the paint surface is delicate, uniform, smooth and full; Construction: anti-sagging, excellent leveling.