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

Evonik AEROSIL R 972 Hydrophobic Fumed Silica

Evonik AEROSIL R 972 is hydrophobic fumed silica surface-treated with dimethyldichlorosilane, designed for rheology control, anti-settling, reinforcement and hydrophobic modification, widely used in silicone, coatings, inks, adhesives and battery materials.


Features Of Evonik AEROSIL R 972 Hydrophobic Fumed Silica

  1. Excellent hydrophobicity and moisture resistance - Silane-modified, insoluble in water, significantly improving the water resistance, moisture resistance and stain resistance of the system

  2. Precise rheology control - Good thixotropy, effectively preventing material sagging and settling, ensuring construction and storage stability

  3. Efficient reinforcement and thickening - It can not only enhance the mechanical strength of the substrate, but also thicken the system, balancing performance and practicality

  4. Comprehensive pigment protection - Improving the uniformity and stability of pigment dispersion, enhancing the corrosion protection and weather resistance of the coating

  5. Convenient compatibility and dispersion - Suitable for various organic systems, easy to add and disperse, without affecting the original appearance and gloss of the product

Typical Applications Of Evonik AEROSIL R 972 Hydrophobic Fumed Silica

  1. Silicone rubber and sealants - Used for thickening and reinforcing one-component silicone sealants, improving product adhesion and storage stability

  2. Paints, coatings and inks - Improving system rheology, preventing sagging and settling, enhancing coating gloss and corrosion protection performance

  3. Adhesives and composite materials - Enhancing the bonding strength of adhesives, optimizing the mechanical properties of composite materials, and improving product durability

  4. Lithium batteries and cable compounds - As a functional additive, improving the safety and stability of lithium batteries, and optimizing the processing and service performance of cable compounds

  5. Toner and plant protection agents - Improving toner fluidity and anti-caking, enhancing the dispersibility and adhesion effect of plant protection agents

Specifications Of Evonik AEROSIL R 972 Hydrophobic Fumed Silica

Product TypeHydrophobic Fumed Silica (White Carbon Black)
Physical FormWhite Amorphous Nano Powder
Surface Treatment AgentDimethyldichlorosilane (DDS)
BET Surface Area110±20 m²/g
Average Primary Particle Size16 nm
Bulk Density (Approximate)approx. 50 g/L
Carbon Content0.6–1.2 wt%
Moisture Content (105℃/2h)≤0.5 wt%
Loss on Ignition (1000℃/2h)≤2.0 wt%
pH Value (4% Aqueous Dispersion)3.6–4.4


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