Material having antireflection, hydrophobic and abrasion resistance properties and process for depositing an antireflection, hydrophobic and abrasion resistant coating on a substrate
AssigneeCommissariat a l'Energie Atomique
InventorHerve Floch
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Abstract
A material having antireflection properties, and a method of depositing an antireflection coating on a substrate, are disclosed. In order to obtain a coating having simultaneously antireflection, hydrophobic and abrasion resistance properties, a material is used comprising: an organic or inorganic substrate (2); an adhesion promoter layer (4) of a material selected from silanes; an antireflection coating (6) formed from colloids of silica in a siloxane binder; a coupling agent layer (8) of a material selected from silazanes; and an anti-abrasion layer (10) of a fluorinated polymer. These materials have specific applications in optics.
Claims19
Material having antireflection, hydrophobic and abrasion resistance properties, wherein it successively comprises:
- an organic or inorganic substrate,
- an adhesion promoting coating made from a material selected from among silanes,
- an antireflection coating formed from silica colloids coated with a siloxane binder,
- a coupling agent coating formed from a material selected from among silazanes, and
- an antiabrasive coating of a fluorinated polymer.
Process of making an article having antireflection, hydrophobic and abrasion resistance properties comprising:
- a) applying to an organic or inorganic substrate a coating of an adhesion promotor selected from among silanes,
- b) applying to the promotor coating, a sol-gel antireflection coating constituted by silica colloids coated with a siloxane binder,
- c) performing a heat treatment so as to establish the siloxane bonds,
- d) depositing on the antireflection coating, a coupling agent coating selected from among silazanes,
- e) depositing on the coupling agent coating a fluoropolymer antiabrasive coating,
- f) performing a heat treatment so as to eliminate residual solvents.
Dependencies are inferred from the claim text.