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Attention: This product is special order only, delivery of product can take an estimated 1 week or more. Please contact us directly for more information.
Everkrete Fumed Silica is a synthetic, amorphous, colloidal silicon dioxide renowned for its unique particle characteristics. With an extremely small particle size, vast surface area, high purity, and chain-forming tendencies, it stands apart as a remarkable material. This light, fluffy, and white powder finds its applications across various industries, owing to its exceptional properties.
Functions
- Rheology Control: Adjusts the flow behavior and viscosity of materials.
- Reinforcement: Enhances the mechanical properties of composites and rubber systems.
- Free Flow: Reduces caking and improves powder flow.
- Suspension: Keeps solid particles evenly distributed in liquid formulations.
- Adsorbent: Absorbs and retains liquids or gases on its surface.
Applications
Flexkrete Fumed Silica finds application versatility in various industries:
- Adhesives: Improves bonding and cohesion in adhesive formulations.
- Coatings: Enhances thixotropy, stability, and anti-settling properties of coatings.
- Composites: Reinforces composites, improving strength and dimensional stability.
- Powder Coatings: Improves free flow and prevents caking in powder coating formulations.
- Sealants: Enhances the thixotropic properties and stability of sealants.
- Silicone Rubber Systems: Reinforces silicone rubber and controls viscosity.
Overhead Applications
EverKrete 102 Resin x 1 part
Fumed Silica x 2 parts
Fine Kiln Dried Sand x 1.5 parts
Vertical Applications
EverKrete 102 Resin x 1 part
Fumed Silica x 1 part
Fine Kiln Dried Sand x 2 parts
Frequently Asked Questions About Fumed Silica Powder – High Purity Synthetic Silicon Dioxide
Q: How should I add fumed silica to my formulations?
A: Fumed silica should be slowly sprinkled into the formulation under continuous mixing to avoid dusting and ensure even dispersion. Use a high-shear mixer for optimal incorporation.
Q: What performance benefits does it provide in adhesives?
A: In adhesives, fumed silica enhances thixotropy, prevents sagging on vertical surfaces, and improves the mechanical strength and durability of the final bond line.
Q: Is this product compatible with water-based or solvent-based systems?
A: Yes, fumed silica is compatible with both water-based and solvent-based systems, but requires different dispersion methods depending on the medium to avoid clumping.
Q: What if I notice clumping during application?
A: Clumping can occur if not dispersed properly. Re-mixing using a high-speed disperser typically restores uniformity. Pre-wetting the silica can also reduce lumping.
Q: Are there any safety concerns when handling this powder?
A: Always wear a dust mask, gloves, and goggles during handling. Ensure good ventilation to prevent inhalation. Avoid creating airborne dust during mixing or pouring.
Use Fumed Silica Powder – High Purity Synthetic Silicon Dioxide for:
- Thickening adhesives, sealants, and coatings in construction and industrial trades
- Improving suspension in resin systems for automotive and composite fabrication
- Enhancing free-flow in powder coatings used in manufacturing and metalwork
- Reinforcing silicone rubber used in electrical and waterproofing applications
Why Use Fumed Silica Powder – High Purity Synthetic Silicon Dioxide:
- Improves control over viscosity and flow properties in complex formulations
- Increases strength and durability of cured adhesives and sealants
- Minimises sagging and settling during application and curing
- Compatible across a wide range of systems and industries
How to apply Fumed Silica Powder – High Purity Synthetic Silicon Dioxide:
- Pre-weigh the required amount using a digital scale in a well-ventilated area
- Slowly add the powder to your base formulation under low-speed stirring
- Switch to high-shear mixing to fully incorporate and break down any agglomerates
- Continue blending until a uniform, lump-free consistency is achieved
- Use immediately or store sealed to prevent moisture contamination
Fumed Silica Powder – High Purity Synthetic Silicon Dioxide limitations:
- Not suitable for formulations requiring a neutral pH – pH is mildly acidic
- May agglomerate if exposed to moisture during storage or mixing
- Requires high-shear equipment for full dispersion in viscous systems
- May contribute to dusting if not handled in controlled conditions
Safety precautions when using Fumed Silica Powder – High Purity Synthetic Silicon Dioxide:
- Personal Protective Equipment: Dust mask (P2/N95), gloves, protective eyewear
- Ventilation: Use in a well-ventilated space or under extraction hood
- Handling: Avoid generating dust; do not inhale; wash hands thoroughly after use
- Keep container tightly sealed when not in use to prevent airborne particles
Fumed Silica Powder – High Purity Synthetic Silicon Dioxide can be used on the following substrates:
- Polyurethane adhesives – improves flow and sag resistance
- Silicone rubber – enhances mechanical strength and thixotropy
- Polyester resins – prevents settling in filled systems
- Paints and coatings – provides anti-settling and flow control
- Powder coatings – improves free-flow and powder uniformity
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