Precipitated silica is an amorphous silicon dioxide powder produced through a wet chemical precipitation process. It features high porosity, large surface area, 그리고 low bulk density, making it ideal for a variety of industrial uses — including tires, plastics, 코팅, agrochemicals, 치약, 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, 여과, 그리고 건조 (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
| 재산 | 기술 |
|---|---|
| 외관 | White amorphous powder |
| Oil Absorption | 150–300 ml/100g |
| BET Surface Area | 100–300 m²/g |
| 벌크 밀도 | 0.05–0.30 g/cm³ |
| 입자 크기 (D50) | 3–25 μm (adjustable) |
| 산도 (5% 용액) | 5.5–7.5 (adjustable) |
| Moisture Absorption | High, can be hydrophilic or modified |
| Chemical Behavior | Inert, 무독성, 무 취 |
응용 프로그램
🛞 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, 플라스틱, and coating industries.
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