Methods of manufacturing mirrors
AssigneeEagle Technology, LLC
InventorsTukaram Hatwar, Rebecca Borrelli, Stephen Oliver, James T. Mooney
Life of this patent
Estimating the term…
Abstract
Methods of forming a mirror by bonding a faceplate to a core structure using adhesive formulations that include fused silica particles having diameters that range between 1 to 60 micrometers with an average diameter of the silica particles being between 8 to 10 micrometers. The adhesive formulation further includes an activator including 25 to 50 weight % sodium silicate, 25 to 50 weight % sodium hydroxide and a liquid. The fused silica particles constitute 70 to 80 weight % of the adhesive formulation and the activator constitute 20 to 30 weight % of the adhesive formulation.
Claims20
A method of manufacturing a mirror, the method comprising:
- obtaining a core structure made of a material that has a coefficient of thermal expansion equal to or less than 0.5 ppm/° C.;
- obtaining a faceplate that is made of a material having a coefficient of thermal expansion of less than 0.5 ppm/° C.;
- bonding the faceplate to the core structure using an adhesive formulation that includes:
- fused silica particles having diameters that range between 1 to 60 micrometers, an average diameter of the silica particles being between 8 to 10 micrometers, the fused silica particles constituting 70 to 80 weight % of the adhesive formulation;
- and
- an activator including 25 to 50 weight % sodium silicate, 25 to 50 weight % sodium hydroxide and a liquid, the activator constituting 20 to 30 weight % of the adhesive formulation;
- and
- curing the adhesive formulation at a temperature in the range of 100 to 250° C.
A method of manufacturing a mirror, the method comprising:
- obtaining a core structure made of a material that has a coefficient of thermal expansion equal to or less than 0.5 ppm/° C.;
- obtaining a faceplate that is made of a material having a coefficient of thermal expansion of less than 0.5 ppm/° C.;
- bonding the faceplate to the core structure using an adhesive formulation that includes:
- fused silica particles having diameters that range between 1 to 60 micrometers, an average diameter of the silica particles being between 8 to 10 micrometers, the fused silica particles constituting 70 to 80 weight % of the adhesive formulation;
- and
- an activator including 25 to 50 weight % sodium silicate, 25 to 50 weight % sodium hydroxide and a liquid, the activator constituting 20 to 30 weight % of the adhesive formulation;
- and
- curing the adhesive formulation at a temperature in the range of 100 to 250° C.;
- the bonding of the faceplate to the core structure includes extruding the adhesive formulation through a 0.026 to 0.063 inch nozzle onto one or both of the core structure and the faceplate.
Dependencies are inferred from the claim text.