Coatings Improve Hydrophobicity And Moisture Resistance

October 31 2013 Process Analytical

By Dr. David Smith

Contact angle comparison

SilcoTek® is currently developing a new CVD deposition specifically designed to be highly hydrophobic, oleophobic, and thermally and oxidatively stable.

This type of coating should find application opportunities where high hydrophobicity is necessary,

Semiconductor Processing
Corrosion resistance
UHV/research
Moisture Testing
Environmental/Analytical Testing
Antifouling and Anticoking applications
Catalyst development

Using Dursan® chemistry as a foundation, a prototype material has been developed to exhibit the highest level of hydrophobicity and oleophobicity of any SilcoTek coating. Tensiometer data showed an average advancing water contact angle of 125.1° and an average receding of 93.6°. Average equilibrium contact angle was 146.7° for a rough surface and 112.1° for a mirror surface.

Water droplet photographs illustrate the progression from hydrophilic to hydrophobic surfaces on the rough surface coupons. The extreme case for the Dursan prototype generated a contact angle of 163°.

Improve hydrophobicity with SilcoTek Coatings
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