Sodium Hexametaphosphate for Coatings, Better Dispersion Effect

Paint products are widely used in many industries such as building decoration, home furnishing, automobile coating, industrial protection, etc. The performance of paint is not only related to the appearance of the final product, but also directly affects its durability and functionality.

In the paint formula, the dispersion stability of pigments and fillers is one of the key factors that determine the quality of the product. Sodium hexametaphosphate has both dispersant and surfactant functions, making it a preferred paint additive by manufacturers.

SHMP bag

SHMP 68% Min

Dispersion mechanism of sodium hexametaphosphate

Sodium hexametaphosphate is a chain polyphosphate, and its molecular structure gives it excellent dispersibility. When dissolved in water, sodium hexametaphosphate dissociates into negatively charged polyphosphate ions, which are quickly adsorbed on the surface of pigment particles to form a stable double-layer structure. By enhancing the charge repulsion on the surface of particles, sodium hexametaphosphate effectively prevents pigment agglomeration. At the same time, the steric hindrance effect of its molecular chain further prevents particles from approaching each other, maintaining the long-term stability of the coating.

In addition, sodium hexametaphosphate can improve the fluidity of coatings and facilitate construction, becoming an important additive in water-based coatings, solvent-based coatings and powder coatings.

Scope of application

△ Building interior and exterior wall paint

Sodium hexametaphosphate can prevent pigment precipitation, ensure uniform paint color, make paint easier to apply during construction, and form a smooth and flat paint film.

For example, adding sodium hexametaphosphate to latex paint will make the wall color bright and lasting after painting, improve glossiness, and effectively prevent floating color and flowery phenomenon, extending the service life of the paint. End products such as interior and exterior wall decorative paints for residential and commercial buildings.

△Wood coatings

Wood coatings have extremely high requirements for gloss and leveling. The addition of sodium hexametaphosphate not only improves the dispersion performance of the coating, but also enhances the gloss and adhesion of the paint film. In the surface coating of high-end solid wood furniture, floors and other wooden products, the paint film is smoother and more delicate, and the color is more vivid and lasting.

△Automotive coatings

Automotive coatings need to have high gloss, weather resistance and corrosion resistance. Sodium hexametaphosphate enhances the dispersion of coatings, improves the gloss and adhesion of paint films, and makes the coating more uniform and beautiful. At the same time, it improves leveling and prevents sagging on complex curved surfaces. It is widely used in primers and topcoats in automobile manufacturing.

△Anticorrosive coatings

Anticorrosive coatings are used to protect metal surfaces and require good adhesion and corrosion resistance. In the anticorrosive coating of large metal structures such as ships and bridges, it effectively prevents sagging and improves the anticorrosion effect. For example, in marine environments, the salt spray resistance and weather resistance of ship coatings are significantly improved after application.

△ Powder coating

Powder coating electrostatic spraying requires good fluidity and dispersibility. In powder coating of home appliances, furniture, auto parts, etc., sodium hexametaphosphate ensures the formation of a smooth and dense paint film after high-temperature curing. For example, in the coating of refrigerator and washing machine shells, the paint film is wear-resistant and corrosion-resistant after application, which improves product quality.

△ Artistic coating

Artistic coating focuses on decorative effects and color expression. In artistic coatings such as imitation stone paint and metallic paint, sodium hexametaphosphate is added to enhance the three-dimensional sense and texture of the coating and improve the decorative effect. Such as interior decoration of high-end hotels and clubs.

Choose the right coating additive sodium hexametaphosphate

Effectively improve product gloss and tinting strength

Anti-floating and floating performance

Sodium hexametaphosphate in Honghai Chemical is pure in raw materials and reliable in quality

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