Accession Number:

ADA310655

Title:

High Performance Elastomers.

Descriptive Note:

Final rept. 24 Feb 87-30 Sep 93,

Corporate Author:

TECHNOLUBE PRODUCTS CO VERNON CA

Personal Author(s):

Report Date:

1993-10-01

Pagination or Media Count:

179.0

Abstract:

The investigations of processes leading to high performance elastomer systems based on quinoxaline- or imide rings linked by perfluoroalkylether chains, initiated in February 1987 and described in part in three Interim Reports, were completed. In the final portion of the program mono-, dumbbell-, and polymeric quinoxalines linked by perfluoroalkylether chains, either directly to the heterocycle or via a phenyl group, were synthesized and evaluated. Two types of linking groups were studied -CF2CF2OCF2CF25- A arrangement and -CF2CF2CF2OCF24OCF24OCF2CF2CF2- B arrangement. The thermal stability of the quinoxalines based on the A linkage was approx. 316 deg C. Materials linked by the B arrangement to the quinoxaline via p-phenylene units gave dumbbell- and polymeric quinoxalines of thermal and thermal oxidative stability exceeding 330 deg C, proving the validity of the approach taken. Investigations of perfluoroalkylether-linked imides were limited the yields were low and purifications tedious.

Subject Categories:

  • Polymer Chemistry
  • Organic Chemistry
  • Elastomers and Rubber
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE