Development of a Two-Piece Mask and Lens and Mold for Same.

Abstract

Modified contract objective was to screen and modify available elastomers for use as lenses for a mask. Also, a program to bond such a lens to a rubber faceblank was required. Two molds-one faceblank less lens area mold and one lens mold were required. By many tests named in the keywords of this and next pages, a Nordel 1320 vulcanizate; covulcanized Nordel 1320/Vynathene CY903; Vynathene EY903 vulcanizate; Elvax 150 vulcanizate and LR3-463 polyurethane vulcanizate were selected as final candidates for lens substance. Final candidate appears to be Nordel 1320, 100; Cabosil MS-7,3,0; Vul-Cup R, 1.5 and Antioxidant 330, 0.5 parts by weight. Loctite 420 was chosen as adhesive for the lens to the faceblank. Photos of the molds and of assembling operations for the two-piece mask are given.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1980
Accession Number
ADA092380

Entities

People

  • Stephen B. King
  • Tibor Gabris

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Engineered Resilient Systems

DTIC Thesaurus Topics

  • Adhesives
  • Alkenes
  • Biomedical And Dental Materials
  • Chemistry
  • Elastomers
  • Fluoropolymers
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Physical Properties
  • Plastics
  • Polymeric Films
  • Resins
  • Tensile Properties
  • Test Methods

Readers

  • Neurological Diseases/Conditions/Disorders
  • Phased Array Antenna Design.
  • Polymer Science and Engineering.