Knowde Enhanced TDS
Identification & Functionality
- Chemical Name
- INCI Name
- CASE Ingredients Functions
- Composite Materials Functions
- Cosmetic Ingredients Functions
- Fluids & Lubricants Functions
- Industrial Additives Functions
- Plastics & Elastomers Functions
- CAS No.
- 112945-52-5
- Technologies
- Product Families
Features & Benefits
- Benefit Claims
- Labeling Claims
- CASE Ingredients Features
- Fluids & Lubricants Features
- Industrial Additives Features
- Materials Features
- Product Features
- Optimum adjustment of rheology during processing
- Reinforcement of silicone elastomers
- Thickening of non-polar liquids
- Free-flow of industrial powders
- High chemical purity
- Excellent insulation properties, even at high and low temperatures
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Fluids & Lubricants Type
- AP/Deo Applications
- Coating Type
- Composites End Use
- Fluids & Lubricants End Use
- Ink & Toner Type
- Oral Care Applications
- Plastics & Elastomers End Uses
- Cable Gel Applications
Use of AEROSIL® fumed silica for cable gels gives excellent performance when it comes to shear-thinning, providing quick recovery and the gel does not require heat to be applied. AEROSIL® fumed silica improves properties of oil-based filling compounds for wire and cables to protect fibers (e. g. optical fibers) as it:
- Supports to isolate sensitive optical fi bers from external forces
- Protects the fi bers from moisture
- Provides thickening to help the gel to stay where it is placed
- Helps to form a seal to keep out contaminants like dust, dirt and water
- Is non-conductive / does not negatively infl uence di-electrical properties
- Lubricating Grease Applications
The use of AEROSIL® fumed silica is recommended for lubricating greases used in industrial applications, automotive, electrical as well as food grade.
Electrical
- High thixotropic effect
- High temperature stability
- Dielectric properties
Industrial
- High thixotropic effect
- High temperature stability
- Wear resistance
- Extreme pressure resistance
Automotive
- High thixotropic effect
- High temperature stability
- Wear resistance
- Reduced friction
Food - Hydrophilic AEROSIL® are generally recognized as safe (GRAS; direct food contact)
- High thixotropic effect
- High temperature stability
- Wear resistance
- AEROSIL® Fumed Silica in Lubricating Greases
AEROSIL® fumed silica helps to build a stable matrix to increase viscosity and suppress oil separation in lubricating greases. It can be used in the following systems:
- In non-soap greases, used in high-temperature applications up to 230° C as well as for extreme-pressure and multipurpose greases.
- In soap greases, thickened by fatty acid soaps of lithium, calcium, sodium or aluminum, AEROSIL® fumed silica can be used to further improve the performance of the lubricating grease.
- Hydrophilic fumed silica provides optimized thickening effects in non-polar oils.
- Hydrophobic fumed silica provides viscosity control and increased water repellency in semi-polar to polar oils.
- The surface area of the silica and the volume fraction of the silica in the fi nal mass play a role in the long term storage and heat stability.
Properties
- Physico-Chemical Properties
| Value | Units | Test Method / Conditions | |
| Tamped Density* | approx. 50 | g/l | — |
| Specific Surface Area (BET) | 270 - 330 | m²/g | — |
| SiO₂ Content (based on ignited material) | min. 99.8 | % | — |
| pH Value (in 4% dispersion) | 3.7 - 4.5 | — | — |
| Loss on Drying* (at 105 °C, 2 hours) | max. 1.5 | % | — |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- AEROSIL® Fumed Silica
- AEROSIL® fumed silica is a highly dispersed, amorphous, very pure silica manufactured by high-temperature hydrolysis of silicon tetrachloride in an oxyhydrogen gas flame. The primary particles formed in the AEROSIL® process are virtually spherical and free of pores.
- During the formation of the primary particles, aggregates are formed which further accumulate into agglomerates. Under shear, these agglomerates can be returned back into smaller aggregates.
- Siloxane and silanol groups are found on the surface of the AEROSIL® particles. This latter type of functional group in particular is responsible for the hydrophilic behavior of untreated AEROSIL®. Figure shows the surface groups of hydrophilic AEROSIL® grades.
Surface groups of hydrophilic AEROSIL® grades.
The hydrophobic nature of after treated AEROSIL® grades compared with AEROSIL® 300 can be illustrated by means of moisture adsorption in increasingly humid conditions. Figure below shows the corresponding isotherms.
Adsorption isotherms of various AEROSIL® grades at room temperature (small samples).
Packaging & Availability
- Packaging Type
- Regional Availability
- Packaging Information
AEROSIL® 300 is supplied in multiple layer 10 kg bags.
Storage & Handling
- Shelf Life
- 2 years
- Storage Conditions
Recommend to store the product in closed containers under dry conditions and to protect the material from volatile substances. AEROSIL® 300 should be used within 2 years after production.