Precipitated silica for tires
Premium Precipitated Silica for Tires (Green Tires Additive)
KOSNANO’s tire-grade Highly Dispersible Silica is designed to reduce tire rolling resistance and improve wet grip. Our product has a purity exceeding 98.5% and can effectively reduce vehicle fuel consumption by 3% – 8%, making it an ideal core raw material for manufacturing eco-friendly tires.
Technical Specifications (KOSNANO Tire Grade Silica)
| Product Specification | Tire Grade (HDS Series) | Standard Grade (General Grade) | Testing Standard |
|---|---|---|---|
| SiO₂ Content (Purity) | ≥ 98.5% | ≥ 97.0% | ISO 3262-19 |
| BET Specific Surface Area | 165 – 185 m²/g | 135 – 155 m²/g | GB/T 10722 |
| DBP Absorption Value | 2.5 – 2.8 cm³/g | 2.0 – 2.3 cm³/g | ASTM D2414 |
| Fe Content (Iron Impurity) | ≤ 200 ppm | ≤ 400 ppm | ICP-OES |
Key Benefits & Application Insights
1. How does precipitated silica significantly reduce tire rolling resistance?
KOSNANO’s precipitated silica possesses a unique microporous structure that allows for perfect physical bonding with natural and synthetic rubbers (SSBR/BR). Replacing some carbon black in tire tread formulations can reduce tire rolling resistance by 20%-30%. According to real-world passenger vehicle road tests, this technology can directly improve fuel efficiency by 3%-8% and reduce CO2 emissions in end vehicles.
2. Why can this product improve wet grip performance and driving safety?
Highly dispersed silica (HDS) achieves a dispersion index of over 95% during rubber compounding, providing excellent dynamic stiffness. It increases the coefficient of friction on wet surfaces by 10%-15%, thereby shortening wet braking distance by 2 to 4 meters. This unique “devil’s triangle” balance significantly improves grip while almost without sacrificing tread wear life.
3. What are the key processing advantages in tire compounding lines?
Our tire-grade silica strictly controls trace metal impurities (such as iron ions) to below 200 ppm, significantly extending the service life of the mixing mill rotor and mold. The product boasts a DBP oil absorption value of 2.5 – 2.8 cm³/g, effectively locking in silane coupling agents (such as Si-69) and improving the stability of the Mooney viscosity of the rubber compound. Under typical vulcanization processes at 150°C – 165°C, the vulcanization rate of the rubber compound can be increased by 12%, significantly optimizing tire factory output.
Customized Services
Our material solutions can help you optimize the particle size of your polymer systems and improve the compatibility of your formulations through surface treatments.
Whether you choose hydrophobic or hydrophilic systems, or powder and dispersion systems, we can provide customized solutions and guarantee batch-to-batch quality consistency.All our materials are designed to improve dispersibility and processability.
Frequently Asked Questions
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Why Plastic Manufacturers Choose KOSNANO
KOSNANO, with its extensive experience in polymer materials systems, has become a reliable supplier to the plastics and rubber industries. Our strong production capacity ensures stable and timely delivery, regardless of order size. From testing to mass production, we offer flexible supply and technical support. Through rigorous quality control processes, we guarantee product quality that exceeds your expectations.
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