Accession Number : ADA054772

Title :   Processing Mechanisms, Structure and Morphology of High Temperature Polymeric Alloys. Part I.

Descriptive Note : Annual rept. Feb 77-Feb 78,

Corporate Author : CELANESE RESEARCH CO SUMMIT N J

Personal Author(s) : Hay,Ian L ; Shaner,Jay R

PDF Url : ADA054772

Report Date : Apr 1978

Pagination or Media Count : 46

Abstract : In the initial phase of this project the processing conditions expected to optimise interactions at a molecular level between poly (bisbenzimidazobenzophenanthroline) (BBB) and polybenzimidazole (PBI) were investigated. Studies of the mechanical properties and the morphology indicate that binary interactions between BBB-BBB, PBI-PBI and BBB-PBI all occur. Interactions of BBB-BBB occur at temperatures above 500 C while PBI-PBI and BBB-PBI interactions occur at lower temperatures. Separation of these interactions should be possible by varying the processing conditions between temperatures of 350 and 550 C and by using a range of composites prepared both dry-blending and co-precipitation of the two polymers. (Author)

Descriptors :   *Polybenzimidazole, *Phenanthrenes, *Benzophenones, Production control, Molecular structure, High temperature, Polymerization, Thermal properties, Mixing, Pressing(Forming), X ray diffraction, Electron microscopy, Aerospace systems, Guided missile components

Subject Categories : Fabrication Metallurgy
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE