Accession Number:

ADA179775

Title:

Thermoset High-Temperature Systems Based on the Homolytic Polymerization of Benzocyclobutene Aromatic Imide Monomers and Oligomers

Descriptive Note:

Final rept. 1 Sep 1984-30 Mar 1986

Corporate Author:

AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1986-06-01

Pagination or Media Count:

51.0

Abstract:

A new series of bisbenzocyclobutene-terminated aromatic imide oligomers has synthesized from the condensation reaction of 4- aminobenxocyclobutene and the perspective dianhydride in refluxing acetic acid toluene. The differential scanning calorimetric studies of the foregoing monomers indicated that polymerization exotherms began at 229-250 C and reached their maxima at 258-263 C. The cured samples 250-254 C Nitrogen 8 hrs were surprisingly stable toward thermooxidative degradation only 7- to 10- percent weight loss was observed after 200 hrs in air at 314 C 600 F. Keywords Thermosets Benzocyclobutene High temperature Imide Oligomers Butenes.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE