Accession Number:

AD0687255

Title:

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

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY WEAPONS COMMAND ROCK ISLAND ILL SCIENCE AND TECHNOLOGY LAB

Personal Author(s):

Report Date:

1969-03-01

Pagination or Media Count:

18.0

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

Subject Categories:

  • Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE