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Gelest, Inc. offers a wide of range silanes and silicones for use as surface modifiers. One of the most sought-after properties is hydrophobicity. This can be used in applications such as rendering glassware water repellent or affecting the wetting of water on a substrate causing it to bead up. Alkylsilanes impart hydrophobicity and can be reacted onto the surface using 5 to 10% solutions in alcohol followed by curing at 120OC. Silicones can also be applied to the surface either in solution or neat to yield a hydrophobic surface.. Long chain fluoroalkylsilanes offer hydrophobicity as well as oleophobicity. Applications that call for these properties include: architectural coatings, water repellants, modification of fillers in composites and surface treatments of minerals.
A brochure is available describing Gelest’s products and application information. Hydrophobicity, Hydrophilicity and Silane Surface Modification
Some key products offered by Gelest for this application;
| Alkylsilanes |
| SIS6952.0 | SilicladTM |
| SIO6640.0 | Octadecyltrichlorosilane |
| SII6453.7 | Isobutyltrimethoxysilane |
| Fluoroalkylsilanes |
| SIT8174.0 | Tridecafluorotetrahydrooctyltrichlorosilane |
| SIT8371.0 | Trifluoropropyltrichlorosilane |
| SIH5841.0 | Heptadecafluorotetrahydrodecyltrichlorosilane |
| Silicones |
| HMS-301 | 30% Methylhydrosiloxane - dimethylsiloxane copolymer |
| DMS-H31 | Hydride terminated polydimethylsiloxane |
| DMS-T31 | Trimethylsiloxy terminated polydimethylsiloxane |
| PP1-AQCF | AquaphobeTM CF |
| PP1-AQCM | AquaphobeTM CM |
| DMS-D33 | Diacetoxymethyl terminated polydimethylsiloxane |
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