Accession Number:

ADA310395

Title:

Improved High-Temperature Resistant Matrix Resins.

Descriptive Note:

Final contract rept. 29 Sep 83-29 Mar 85,

Corporate Author:

TRW SPACE AND DEFENSE SECTOR REDONDO BEACH CA

Report Date:

1989-04-21

Pagination or Media Count:

84.0

Abstract:

A study was performed with the objective of developing matrix resins that exhibit improved thermo-oxidative stability over state of the art high temperature resins for use at temperatures up to 544K 700 deg F and air pressures up to 0.7 MPa 100 psia. The work was based upon a TRW discovered family of polyimides currently licensed to and marketed by Ethyl Corporation as EYMYDR resins. The approach investigated to provide improved thermo-oxidative properties was to use halogenated derivatives of the diamine, 2,2-bis4-4-AMINOPHENOXYPHENYLHEXAFLUOROPROPANE 4-BDAF. Polyimide neat resins and CelionR 12,000 composites prepared from fluorine substituted 4-BDAF demonstrated unexpectedly lower glass transition temperatures Tg and thermo-oxidative stabilities than the baseline 4-BDAFPMDA polymer.

Subject Categories:

  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE