URETHANE-UREA ELASTOMERS FOR LOW-TEMPERATURE, OIL AND FUEL RESISTANT APPLICATIONS.

Abstract

Millable polyether urethane-urea elastomers having good low-temperature flexibility and oil resistance were prepared on a semiplant scale and evaluated. These elastomers were also compounded and evaluated in specific end-item applications. Results showed that semiplant quantities and scaled-up processing methods can duplicate results obtainable on a laboratory scale. These elastomers had poor resistance to fuels high (40 percent or greater) in aromatic content. Various thioether, chloro-substituted ether, and pyridyl modified glycols were evaluated in urethane-urea millable gum preparation to improve aromatic fuel resistance while retaining desirable properties such as low-temperature flexibility and tensile strength. Thioethers offer considerable promise; but further work with thioethers, chloro - and fluoro-substituted ethers, and various glycol blends is considered necessary before the potential and the shortcomings of these materials, in preparation of a fuel-resistant elastomer, can be realized. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1969
Accession Number
AD0687255

Entities

People

  • Wilbur M. Veroeven

Tags

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Buildings And Structures
  • Elastomers
  • End Items
  • Films
  • Low Temperature
  • Materials
  • Materials Laboratories
  • Polyethers
  • Polymeric Films
  • Research Facilities
  • Resilience
  • Resistance
  • Tensile Strength
  • Urethanes

Readers

  • Organic Chemistry
  • Polymer Science and Engineering.
  • Systems Analysis and Design