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Whether for individual rheological properties, reinforcement, or thickening, HDK® Hydrophobic Fumed Silica achieves remarkable results.
Fumed silica provides performance advantages in many ways:
- Reinforcement - improving strength in silicones and other polymers
- Rheology control
- Thickening - tailored flow properties
- Sag resistance - reduced sag of liquids and pastes
- Anti-settling - prevents sedimentation and settling
- Thixotropy - shear thinning viscosity profiles
- Free flow additive in powders
Choose any of the products below to download the PDS or complete the short form and a member of the Brenntag North America team will contact you shortly.
Product | Hydrophobicity | Treatment | Hydrophobic BET Surface Area1 | Characteristics & Typical Applications |
---|---|---|---|---|
(new) |
Very High | Siloxane | 110 |
Designed to provide unsurpassed thickening, highly efficient processing, prolonged storage stability, and superior sag resistance Used in highly polar systems including epoxy resins, isocyanate prepolymers, vinyl ester resins, and polar solvent-based formulations |
HDK® H18 | Very High | Siloxane | 120 |
Excellent for rheology control in highly polar systems, outstanding for non-sag epoxy & urethane adhesives and sealants Used in highly polar adhesives and sealants, composite materials, and solvent-less systems |
HDK® H17 | Very High | Siloxane | 90 |
Designed for optimal processing. Good rheology control in polar systems needing the easiest dispersibility Used in composites, coatings, adhesives and sealants |
HDK® H13L | High | Silane | 110 |
Excellent dispersibility, capable of high loadings in non-polar systems for reinforcement, good rheology control in moderately polar systems Used in coatings, printing inks, adhesives, and others. Well suited for solvent-free systems, for high solids and for waterborne coatings |
HDK® H20 | Medium | Silane | 170 |
Enables free flow in powder coatings, grinding & processing aid in powder coatings Good rheology control in moderately polar sealants and adhesives, dispersions, and aqueous polymer solutions |
HDK® H15 | Medium | Silane | 120 |
Capable of high loadings in non-polar systems for reinforcement, good rheology control in moderately polar systems Used in moderately polar sealants and adhesives, RTV systems, solvent-based and solvent-less systems |
1approx. (m2/g)3 DIN ISO 9277 DIN 66132