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Paints & Coating Applications

  1. Matting Agent: Silicon dioxide is commonly used as a matting agent in paints and coatings to create a matte or satin finish on surfaces. By scattering and diffusing light, silica particles help to reduce glossiness and enhance the aesthetic appearance of painted surfaces. Matting agents based on silicon dioxide are particularly beneficial for architectural coatings, automotive finishes, and wood coatings.

  2. Anti-Corrosion Coatings: Silicon dioxide nanoparticles are incorporated into anti-corrosion coatings to improve their performance and durability. These nanoparticles form a protective barrier on metal surfaces, preventing corrosion and rust formation. Silicon dioxide-based anti-corrosion coatings are widely used in marine coatings, industrial coatings, and protective coatings for infrastructure and equipment.

  3. Reinforcement: Silicon dioxide nanoparticles serve as reinforcing fillers in paints and coatings to enhance their mechanical properties. When dispersed in polymer matrices, silica nanoparticles improve the strength, toughness, and abrasion resistance of the coating. Reinforced coatings based on silicon dioxide are used in high-performance applications such as aerospace coatings, marine coatings, and industrial floor coatings.

  4. Scratch Resistance: Silicon dioxide nanoparticles are incorporated into clear coatings to improve their scratch resistance and durability. By forming a hard and durable film on the surface, silica nanoparticles help to protect painted surfaces from scratches, abrasion, and wear. Scratch-resistant coatings based on silicon dioxide are commonly used in automotive coatings, electronic coatings, and protective clear coats.

  5. UV Protection: Silicon dioxide nanoparticles provide UV protection in coatings by absorbing or scattering harmful ultraviolet (UV) radiation. UV-blocking coatings based on silicon dioxide help to prevent degradation and fading of painted surfaces exposed to sunlight. These coatings are used in exterior paints, automotive finishes, and protective coatings for outdoor structures.

  6. Rheology Modifier: Silicon dioxide nanoparticles can act as rheology modifiers in paints and coatings to control their flow and viscosity. By adjusting the concentration and particle size of silica nanoparticles, formulators can tailor the rheological properties of the coating to meet specific application requirements. Rheology-modified coatings based on silicon dioxide exhibit improved sag resistance, leveling, and application properties.

Property Specification
Chemical Composition Silicon Dioxide (SiO2)
Particle Size Nano to Micron-sized particles
Purity ≥ 99.8%
Surface Area High surface area
Bulk Density Variable depending on grade
pH Value Neutral to slightly alkaline
Color White
Moisture Content ≤ 1%
Oil Absorption Low to moderate
Transparency Transparent to translucent
Refractive Index High
UV Resistance Provides UV protection
Abrasion Resistance High
Chemical Resistance Resistant to acids and alkalis
Adhesion Improves adhesion to substrates
Matting Agent Provides matte finish
Rheological Modifier Controls viscosity and flow
Thickening Agent Improves consistency and stability
Anti-Corrosion Protects metal surfaces
Packaging Bags, drums, or bulk containers
Shelf Life Long
Note: Specifications may vary depending on the specific grade and application requirements.