Method for providing mirror surfaces with protective strippable polymeric film
This invention is a method for forming a protective, strippable, elastomeric film on a highly reflective surface. The method is especially well suited for protecting diamond-machined metallic mirrors, which are susceptible not only to abrasion and mechanical damage but also to contamination and corrosion by various fluids. In a typical use of the invention, a diamond-machined copper mirror surface is coated uniformly with a solution comprising a completely polymerized and completely cured thermoplastic urethane elastomer dissolved in tetrahydrofuran. The applied coating is evaporated to dryness, forming a tough, adherent, impermeable, and transparent film which encapsulates dust and other particulates on the surface. The film may be left in place for many months. When desired, the film may be stripped intact, removing the entrapped particulates and leaving no residue on the mirror surface.
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- Patent Number(s):
- US 4199620; A
- Application Number:
- PPN: US 6-024340
- OSTI ID:
- 7005341
- Resource Relation:
- Patent File Date: 27 Mar 1979
- Country of Publication:
- United States
- Language:
- English
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Method for providing mirror surfaces with protective strippable polymeric film
ASSESSMENT OF STRIPPABLE COATINGS FOR DEACTIVATION AND DECOMMISSIONING