THE RELATIONSHIP BETWEEN STRUCTURE AND THERMAL STABILITY OF NEW HIGH TEMPERATURE POLYMERS

Abstract

Research aimed at obtaining quantitative relationships between structure and thermal stability of polymers was continued. Observation of further errors in vacuum thermogravimetry and further improvements in mass spectrometric analysis of pyrolysis gases caused the former to be dropped in favor of the latter. Mass spectrometric observations have been aided by providing better pumping, bake-out of the furnace tube in advance of pyrolysis, a horizontal furnace instead of vertical, and improved linear programming. Sample size was reduced from 10 mg. to 1 mg. for polybenzimidazoles. Methods of calibration were developed for both the very volatile and not so volatile products. An automatic data processing system was designed, and is nearly finished. Its inclusion in these experiments is expected to result in a vast increase in efficiency of converting the data to qualtitative and quantitative analysis.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0474140

Entities

People

  • H. L. Friedman

Organizations

  • General Electric

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Calibration
  • Chemical Analysis
  • Chemical Reactions
  • Chemistry
  • Computer Programs
  • Contracts
  • Data Processing
  • Decomposition
  • Department Of Defense
  • Governments
  • Mass Spectra
  • Mass Spectrometers
  • Mass Spectrometry
  • Materials Laboratories
  • Measurement
  • Spectrometry
  • Thermal Stability

Fields of Study

  • Chemistry

Readers

  • Combustion science or combustion engineering.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.