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US 8,465,718 B2Granted
Superhydrophobic and self-cleaning powders having micron-scale diameter and nano-scale surface roughness and fabrication method thereof
AssigneeIndustrial Technology Research Institute
InventorsShih-Chieh Liao, Hsiu-Fen Lin, Jin-Ming Chen
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Abstract
The invention discloses nano/micron binary structured powders for superhydrophobic, self-cleaning applications. The powders are featured by micron-scale diameter and nano-scale surface roughness. In one embodiment, the average diameter is about 1-25 μm, and the average roughness Ra is about 3-100 nm. The nano/micron binary structured powders may be made of silica, metal oxide, or combinations thereof.
Claims28
Superhydrophobic and self-cleaning powders, comprising:
- binary-structured spherical powders comprising particles with a micron-scale diameter and a nano-scale surface roughness;
- wherein the particles of the binary-structured spherical powders have an average diameter of 5-25 μm, and a surface roughness Ra of about 3-100 nm;
- wherein the binary-structured spherical powders are modified with a hydrophobic agent;
- and
- wherein the binary-structured spherical powders are fabricated by granulation and calcination of nanoparticles and/or sub-micron particles as starting powders, which comprise SiO2, TiO2, ZnO, Al2O3, Zn2SnO4, or combinations thereof.
2 more elements
Dependencies are inferred from the claim text.