Evonik AEROSIL R106 is a hydrophobic fumed silica imported from Germany, modified with D4 organosilane based on high-specific-surface-area hydrophilic silica. It features low chlorine, high reinforcement, excellent rheology and strong anti-caking, specially designed for silicone rubber, sealants, toner and thermoplastic materials.
D4 organosilane hydrophobic modification - Uniform surface modification, stable hydrophobicity, suitable for various silicone and polar polymer systems
Low chloride content - Less impurities, friendly to electronic and insulating materials, improve product weather resistance and reliability
High-efficiency reinforcement & thickening - Used as reinforcement for RTV/HTV silicone rubber and thickener for one-component sealants, significantly improve mechanical properties
Precise rheology control - Optimize thixotropy of adhesives, prevent sagging and settling, improve construction and formability
Powder anti-caking & flow aid - Greatly improve fluidity of toner and plastic powder, no caking during long-term storage, smoother dispersion
RTV/HTV silicone rubber - Efficient reinforcement, improve tensile strength, wear resistance and resilience
One-component silicone sealants - Thicken and thixotropic, prevent sagging, enhance sealing durability
Industrial adhesives & polymers - Rheology control, improve bonding strength and construction stability
Copier toner / electrostatic powder - Anti-caking and flow aid, improve printing uniformity and spraying efficiency
Thermoplastics - Improve processing fluidity, enhance product surface and mechanical properties
| Brand | Evonik |
| Product Series | AEROSIL Hydrophobic Fumed Silica |
| Product Type | Hydrophobic Fumed Silica |
| Surface Treatment | D4 (Octamethylcyclotetrasiloxane) |
| BET Surface Area | 300±25 m²/g |
| Primary Particle Size | 7 nm |
| Moisture Content | ≤0.5 wt% |
| Loss on Ignition | ≤2.0 wt% |
| pH Value (4% Dispersion) | 5.5–7.5 |
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