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 ...
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