Environmental Exposure and Accelerated Testing of Rubber-to-Metal Vulcanized Bonded Assemblies

Abstract

The purpose of this work is to expose rubber-to-metal vulcanized bonded assemblies to environmental conditions experienced by weapon components in the field and to determine the effect of this exposure on the vulcanized bond. The purpose is also to duplicate these long term environmental effects with an accelerated laboratory test. Four different groups of rubber-to-metal vulcanized bonded assemblies were exposed outdoors in Panama and at Rock Island. Accelerated laboratory testing was conducted using heat and humidity. After one year exposure in Panama; the butadiene acrylonitrile rubber bonded assemblies showed a severe loss of 100 percent in bond strength; the EPDM bonded assemblies showed a 40 percent loss in bond strength and the SBR and neoprene bonded assemblies showed no loss in bond strength. Accelerated testing did show the same results as environmental exposure, but laboratory test periods (up to 56 days) are too long for a good accelerated test.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1974
Accession Number
ADA017368

Entities

People

  • John A. Williams

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accelerated Testing
  • Adhesives
  • Alkenes
  • Butadienes
  • Elastomers
  • Environmental Exposure
  • Humidity
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Neoprene
  • Nitrile Rubber
  • Physical Properties
  • Rubber
  • Substrates
  • Synthetic Rubber
  • Weapons

Readers

  • Materials Science
  • Polymer Science and Engineering.