Self-healable coatings and methods of making the same
AssigneeThe Penn State Research Foundation
InventorsJing Wang, Tak-Sing Wong
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Abstract
A robust and self-healing coating has been developed by incorporating a thermally self-healing chemical coating on smooth and/or roughened solid. When the chemically coated solid is combined with a lubricating fluid, the material system is capable to repel a broad range of liquids and solids. The thermally self-healing chemical coating may be applied on various industrial metals, glass and plastics, and has shown exceptionally physical and chemical robustness as compared to state-of-the-art liquid-repellent coatings.
Claims20
An article comprising:
- (a) a substrate;
- (b) a self-healing coating directly adhered to the substrate, the self-healing coating comprising silane molecules having a length and the coating having a thickness at least five times greater than the length of the silane molecules and from 1 μm to about 10 μm;
- and
- (c) a lubricant,
- wherein the coating is self-healing such that when the coating includes a damaged portion, the damaged portion is healed when it is exposed to a temperature of about 40° C. to about 400° C.
A method for producing a self-healing coating on a substrate, the method comprising:
- (a) applying a composition comprising silane molecules directly to at least a portion of the substrate to form a coating thereon, the silane molecules having a length and the coating having a thickness that is at least five times greater than the length of the silane molecules and from 1 μm to about 10 μm, the coating being self-healing such that when the coating is damaged to form a damaged portion, the damaged portion heals itself when exposed to a temperature of about 40° C. to about 400° C.;
- and
- (b) lubricating the coating with a liquid or gaseous lubricant having affinity for the coating.
An article comprising:
- (a) a substrate;
- and
- (b) a self-healing coating directly adhered to the substrate, the self-healing coating comprising silane molecules having a length and the coating having a thickness at least five times greater than the length of the silane molecules and from 1 μm to about 10 μm,
- wherein the coating is self-healing such that when the coating includes a damaged portion, the damaged portion is healed when it is exposed to a temperature of about 40° C. to about 400° C.
Dependencies are inferred from the claim text.