Title: Fused anti-soiling and anti-reflective coatings

Abstract

A method for applying a coating to a surface includes the step of providing a reaction mixture comprising a silicon alkoxide and an alcohol. A reaction limiting amount of water is added. The silicon alkoxides and water are allowed to react to form silica precursor particles during an initial reaction period. A coating precursor composition is prepared by adding an acid soluble in the alcohol to the reaction mixture during a second reaction period after the initial reaction period. The precursor silica particles grow to form silica nanofeatures having a major dimension that is larger than a major dimension of the silica precursor particles. The coating precursor composition is applied to a surface, and the alcohol and water are allowed to evaporate and the silica nanofeatures to adhere to the surface and form a nanostructured layer on the surface. A coating precursor composition and a coated article are also disclosed.

Inventors:

Lee, Dominic F.; Park, Jaehyeung; Sharma, Jaswinder; Polyzos, Georgios

Issue Date:

2022-01-11

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1892522

Patent Number(s):

11220605

Application Number:

16/203,127

Assignee:

UT-Battelle, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):

C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients

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C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS

C03C17/25 - by deposition from the liquid phase
C03C2217/213 - SiO2
C03C2217/73 - Anti-reflective coatings with specific characteristics
C03C2217/77 - Coatings having a rough surface
C03C2217/90 - Other aspects of coatings
C03C2218/113 - by sol-gel processes
C03C2218/32 - After-treatment

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients

C08K2201/005 - Additives being defined by their particle size in general
C08K3/36 - Silica

C - CHEMISTRY C09 - DYES C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS

C09D1/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
C09D5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {
C09D5/006 - {Anti-reflective coatings}
C09D5/1618 - {inorganic}
C09D5/1681 - {Antifouling coatings characterised by surface structure, e.g. for roughness effect giving superhydrophobic coatings or Lotus effect}
C09D7/70 - {characterised by shape, e.g. fibres, flakes or microspheres}
C09D7/80 - Processes for incorporating ingredients

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 11/28/2018

Country of Publication:

United States

Language:

English