Investigation of Polyurethane Adhesives for Use in the Apache Aviator NBC Protective Mask

Abstract

Polyurethane adhesives are currently used in Apache aviator masks to secure polycarbonate lenses to a bromobutyl-natural rubber face piece. An alternative polyurethane adhesive packaged in a pre-measured assembly was investigated to determine its suitability for mask remanufacturing operations. Seventy-five prototype assemblies were prepared with the standard and alternative adhesive. The composite assemblies were then destructively tested on an Instron machine, in tension, to compare rupture strength of the polycarbonate-adhesive-rubber joint as a function of curing regime and surface preparation. Rupture load measurements indicate the alternative adhesive investigated is adequate for securing lenses within the aviator mask. Stress applied at joint failure ranged from 146 to 343 pounds per square inch. Prototypes cured at 63 degrees Celsius are approximately 38% stronger than ambient cured specimens.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADA394894

Entities

People

  • David May
  • Gerald P. Young
  • Lawrence Oswald
  • Steven Ciborowski
  • Steven Gross

Organizations

  • Edgewood Chemical Biological Center

Tags

Communities of Interest

  • Advanced Electronics
  • Counter WMD

DTIC Thesaurus Topics

  • Adhesives
  • Assembly
  • Biomedical And Dental Materials
  • Chemical Synthesis
  • Chemistry
  • Composite Materials
  • Fabrication
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Physical Properties
  • Polymer Chemistry
  • Polymeric Films
  • Polyurethanes
  • Prototypes
  • Rubber

Readers

  • Materials Science
  • Polymer Science and Engineering.
  • Reinforced Composite Materials