Precipitated silica is an amorphous silicon dioxide powder produced through a wet chemical precipitation process. It features high porosity, large surface area, and low bulk density, making it ideal for a variety of industrial uses — including tires, Plásticos, Revestimentos, agrochemicals, creme dental, and animal feed.
Production Method: Wet Precipitation
KosNature manufactures precipitated silica using a controlled chemical process:
Basic Reaction:
Na₂SiO₃ (Sodium Silicate) + H₂SO₄ (Sulfuric Acid) → SiO₂ (precipitated) + Na₂SO₄ + H₂O
Process steps include:
- pH Control
- Reaction temperature & dosing rate optimization
- Gel aging, filtração, e secagem (e.g., spray drying)
- Particle size and structure adjustment via milling
This process ensures consistent product quality and allows for specification customization.
Key Product Characteristics
| Propriedade | Produtos |
|---|---|
| absoluto de osmanthus | White amorphous powder |
| Oil Absorption | 150–300 ml/100g |
| BET Surface Area | 100–300 m²/g |
| Densidade aparente | 0.05–0.30 g/cm³ |
| Tamanho de partícula (D50) | 3–25 μm (adjustable) |
| pH (5% solução) | 5.5–7.5 (adjustable) |
| Moisture Absorption | High, can be hydrophilic or modified |
| Chemical Behavior | Inert, atóxico, inodoro |
Aplicativos
🛞 Rubber & Tire Manufacturing
- High reinforcement for tread compounds
- Improves wet grip and rolling resistance
- Replaces carbon black in non-marking applications
🧴 Plastics & Composites
- Enhances dimensional stability and rigidity
- Anti-blocking and matting for thermoplastics
- Used in PVC, PE, PP compound formulations
🎨 Paints, Coatings & Inks
- Provides thickening, anti-settling, and matting
- Improves abrasion resistance and suspension
As a leading precipitated silica manufacturer, KosNature offers high-purity, customizable solutions for global tire, plástico, and coating industries.
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