Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Evonik Ultrasil 9100 GR Precipitated Silica

Evonik Ultrasil 9100 GR is original German highly dispersible granulated precipitated silica, designed for high-performance tires and premium rubber products. It has ultra-high dispersion, strong reinforcement and dust-free feature, optimizing tire wet grip, wear resistance and rolling resistance.


Features Of Evonik Ultrasil 9100 GR Precipitated Silica

  1. Ultra-high dispersion – fast and uniform mixing, no agglomeration or dust, greatly improving processing efficiency

  2. Strong reinforcement – significantly enhancing rubber tensile, tear strength and wear resistance, extending product life

  3. Granulated dust-free design – smooth feeding, improving workshop environment, suitable for automatic production lines

  4. Tire performance optimization – good compatibility with silane coupling agents, balancing tire wear, wet grip and rolling resistance

  5. Wide system compatibility – excellent compatibility with natural and synthetic rubber, suitable for high-filling formulas

Typical Applications Of Evonik Ultrasil 9100 GR Precipitated Silica

  1. High-performance tire tread – passenger car tires, winter tires, improving wet road grip and driving safety

  2. Key tire components – sidewall, bead, wear-resistant support rubber, enhancing structural strength and flexibility

  3. High-end rubber products – industrial seals, transmission belts, shock absorbers, improving durability and stability

  4. Rubber shoe materials – high-end sports shoe soles, enhancing wear resistance, resilience and anti-slip performance

  5. Special rubber mixing – suitable for EPDM, NR, SBR systems, meeting the performance needs of high-end products

Specifications Of Evonik Ultrasil 9100 GR Precipitated Silica

Product TypeHighly Dispersible Granulated Precipitated Silica
AppearanceWhite granule
BET Surface Area200±20 m²/g
SiO₂ Content≥97%
pH Value (5% suspension)5.5–7.5
Loss on Drying≤6.0%
Loss on Ignition≤8.0%
Conductivity (4% aqueous solution)≤1500 μs/cm


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