Self-cleaning film system
AssigneeGM Global Technology Operations LLC
InventorsGayatri V. Dadheech, Thomas A. Seder, James A. Carpenter
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Abstract
A self-cleaning film system includes a substrate and a self-cleaning film disposed on the substrate. The self-cleaning film includes a monolayer formed from an oleophobic material, and a first plurality of regions disposed within the monolayer in a non-periodic pattern such that each of the first plurality of regions abuts and is surrounded by the oleophobic material. Each of the first plurality of regions includes a photocatalytic material.
Claims42
A self-cleaning film system, the self-cleaning film system comprising:
- a substrate;
- and
- a self-cleaning film disposed on the substrate and including:
- a monolayer formed from an oleophobic material;
- and
- a first plurality of regions disposed within the monolayer in a non-periodic pattern such that each of the first plurality of regions abuts and is surrounded by the oleophobic material, wherein each of the first plurality of regions includes a photocatalytic material.
A self-cleaning film system, the self-cleaning film system comprising:
- a substrate;
- and
- a self-cleaning film disposed on the substrate and including:
- a monolayer formed from an oleophobic material selected from one of polytetrafluoroethylene and fluorinated diamond-like carbon;
- and
- a first plurality of regions disposed within the monolayer in a non-periodic pattern such that each of the first plurality of regions abuts and is surrounded by the oleophobic material, wherein each of the first plurality of regions includes titanium dioxide present in anatase form;
- wherein the non-periodic pattern is non-repeating such that the first plurality of regions are randomly disposed along the self-cleaning film;
- wherein the oleophobic material and the titanium dioxide are present in the self-cleaning film in a ratio of parts by volume oleophobic material to parts by volume photocatalytic material of 80:20;
- wherein each of the first plurality of regions has a diameter of less than or equal to 3 microns;
- and
- wherein the titanium dioxide has an average diameter of from 30 nm to 70 nm.
A self-cleaning film system, the self-cleaning film system comprising:
- a substrate;
- and
- a self-cleaning film disposed on the substrate and including:
- a monolayer formed from an oleophobic material;
- and
- a first plurality of regions disposed within the monolayer in a non-periodic pattern such that each of the first plurality of regions abuts and is surrounded by the oleophobic material, wherein each of the first plurality of regions includes a photocatalytic material;
- wherein the non-periodic pattern is non-repeating such that the first plurality of regions are randomly disposed along the self-cleaning film;
- wherein each of the first plurality of regions has a diameter of less than or equal to 3 microns;
- and
- wherein the substrate further includes an anti-reflection film disposed in contact with the self-cleaning film and including:
- a first sheet formed from titanium dioxide;
- a second sheet formed from silicon dioxide and disposed on the first sheet;
- and
- a third sheet formed from titanium dioxide and disposed on the second sheet and in contact with the self-cleaning film.
Dependencies are inferred from the claim text.