HB-139 Characteristics
HB-139 Application & Function
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Silicone rubber |
Reinforcing agent, improve mechanical properties |
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Coatings and inks |
Improved thickening thixotropy and anti-settling properties |
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Adhesives and sealants |
Improve rheology and thickening during processing |
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Lubricants and cable gels |
Thickening thixotropy and increasing strength |
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Vinyl polyester resin |
Reinforcing, thickening thixotropy, improve the performance of the substrate |
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Powder |
Provides good free flow |
HB-139 Downloads
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Safety Datasheet (SDS) |
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Technical DataSheet (TDS) |
HIFULL®HB-139 Fumed Silica (BET=110㎡/g)
HIFULL® HB-139 is hydrophobic fumed silica which is produced by hydrophilic fumed silica with a specific surface area of 200m2/g after chemical post-treatment with PDMS / Polydimethylsiloxane, also known as silicone oil.
| BET Surface Area | 110±30 m²/g |
|---|---|
| Silica Content | ≥99.8% |
| Key Effects | Anti-sagging, Stability, Thickening agent, Thixotropic agent |
| Typical Applications | cable gels, Ink, lubricating oil, Painting Coating, Silicone Rubber, Vinyl ester resins |
Description
| Self-owned Brand | HIFULL |
| Free Sample | Yes |
| Sample Freight Payer | Buyer |
| Fast Delivery | Express samples within 7 days |
| MOQ | 10KG/BAG |
| Appearance (Fumed Silica) | Nanoscale white fluffy inorganic synthetic powder (not silica fume/microsilica powder) |
| Drop Shipping Support | Yes (with HIFULL logo) |
| Patents | 54 patents (no infringement risk) |
HIFULL Strength
Compared to untreated hydrophilic fumed silica, HB-139 loses its surface hydroxyl groups due to chemical reactions or shielding, making it hydrophobic. Its particle size increases, and the nitrogen adsorption-specific surface area decreases from 200m2/g to around 110±30 m2/g. Its pH ranges from 4.0% to 7.0% in a 4% dispersion of isopropanol-water solution (1:1 volume ratio). The pH change of hydrophobic fumed silica is influenced by the treating agent.
Further Information
How to Use Fumed (Colloidal) Silica
Fumed Silica requires significant agitation (stirring) to become fully mixed into a resin. Use of a mechanical stirrer will make the process quicker and easier but manual mixing is perfectly possible. For maximum effect, allow the Fumed Silica to soak in the resin for as much as a day before thorough mixing. Fumed Silica added to resin at a ratio of 0.7% – 1% (by weight) will produce a thixotropic resin. 2-3% will produce a gelcoat consistency. Percentages up to 3%+ can be used to make a filler paste (additional filler powders may be required). Please note the addition of Fumed Silica will reduce the clarity of clear resin systems meaning it is not ideal for turning clear laminating resin into a clear gelcoat.
Safety
Fumed Silica particles are incredibly small and light and will become airborne as soon as the material is scooped, moved or mixed. Always wear protective gloves and a dust mask when handling this product in its raw state.
Product Package Details
The product is supplied in multiple-layer 10 kg bags or polypropylene-made packages in 200kg bags. We recommend storing the product in dry and cool conditions and protecting the material from volatile substances. It should be used within 2 years after production.
FAQ
Related Product
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BET Surface Area 150±25 m²/g
Silica Content ≥99.8%
Key Effects Anti-caking aid, Anti-sagging, Free flow aid, Reinforcing filler, Rheology control, Thickening agent, Thixotropic agent
Typical Applications Adhesives & Sealants, Painting Coating, Silicone Rubber
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BET Surface Area 260±20 m²/g
Silica Content ≥99.8%
Key Effects Anti-caking aid, Anti-sagging, Anti-settling, Free flow aid, Reinforcing filler, Rheology control, Thickening agent
Typical Applications Battery, Cosmetic, Fertilizer, Ink, Painting Coating, Sealants Adhesives, Silicone Rubber
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BET Surface Area 140±20 m²/g
Silica Content ≥99.8%
Key Effects Anti-caking aid, Anti-sagging, Anti-settling, Free flow aid, High transparency, Reinforcing filler, Rheology control, Thixotropic agent
Typical Applications Adhesives & Sealants, Ink, Painting Coating, Silicone Rubber
-
BET Surface Area 150±15 ㎡/g
Silica Content ≥99.8%
Key Effects Anti-caking aid, Anti-sagging, Anti-settling, Free flow aid, High transparency, Reinforcing filler, Rheology control, Thickening agent
Typical Applications Ink, Painting Coating, Sealants Adhesives, Silicone Rubber