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Superhydrophobic diatomaceous earth

Patent ·
OSTI ID:1069104
A superhydrophobic powder is prepared by coating diatomaceous earth (DE) with a hydrophobic coating on the particle surface such that the coating conforms to the topography of the DE particles. The hydrophobic coating can be a self assembly monolayer of a perfluorinated silane coupling agent. The DE is preferably natural-grade DE where organic impurities have been removed. The superhydrophobic powder can be applied as a suspension in a binder solution to a substrate to produce a superhydrophobic surface on the substrate.
Research Organization:
Ut-Battelle, LLC (Oak Ridge, TN)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
Ut-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,216,674
Application Number:
11/777,486
OSTI ID:
1069104
Country of Publication:
United States
Language:
English

References (4)

The hydroxyl species and acid sites on diatomite surface: a combined IR and Raman study journal April 2004
Toxic and behavioural effects of different modified diatomaceous earths on the German cockroach, Blattella germanica (L.) (Orthoptera: Blattellidae) under simulated field conditions journal January 2006
Ultralow Surface Energy Plasma Polymer Films journal July 2000
Obtention of selective membranes for water and hydrophobic liquids by plasma enhanced chemical vapor deposition on porous substrates journal September 2004