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| Wacker HDK H18 |
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| Fumed silica |
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| 112945-52-5 |
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WACKER HDK H 18 Fumed Silica is a hydrophobic fumed silica formed by a chemical reaction of hydrophilic WACKER HDK with silicone fluid. Hydrophilic fumed silica is produced by flame hydrolysis of volatile silicon compounds. H 18 is a pure, x-ray amorphous silicon dioxide (SiO2).
* Epoxy resins: Especially for solvent-free reaction systems. H 18 can be used to raise the viscosity of systems intended for vertical surfaces so that they do not sag when applied.
* Polyurethane systems: Apart from raising the viscosity and thixotropic properties of such systems, H 18 offers a maximum of chemical purity and a minimum of moisture input.
* Vinyl Ester Resins: H 18 constitutes a stable, highly efficient rheological additive for such systems. |
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Surface area, m2/g : 120¡¾40
SiO2-Content, %, (Dried for 2 hr/ 1000'C) : >99.8
Tamped Bulk density, g/l : ca. 40
Moisture, %, 2 hr/105'C, (Material when leaving the plant site) : <0.6
pH-Value, [4% dispersion in water: methanol (1:1)] : 4.0 - 6.8
HCI-Content, (Dried for 2 hr/1000'C) : <0.02
Al2O3-Content, (Dried for 2 hr/1000'C) : <0.05
Fe2O3-Content, (Dried for 2 hr/1000'C) : <0.005
TiO2-Content, (Dried for 2 hr/1000'C) : <0.003
C-Content, (Dried for 2 hr/105'C) : >3.7 |
| Industrial field |
additive, plastic, polymer, resin, monomer, polyurethane(PU) |
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