Thermal Characterization of Two Epoxy Systems

Abstract

Composite materials for application on Naval aircraft must possess certain unique characteristics including toughness, resistance to temperature and moisture, and high specific strength. Two resin systems being investigated for potential airframe applications include Phthalonitrile and PETl-5. Both are addition systems with high temperature applications. Thermogravimetric analysis (TG) and modulated differential scanning calorimetry (MDSC) were used to determine the glass transition temperatures (Tg) before and after thermal heat treatment as well as to determine thermal decomposition kinetics. Both resin systems were autoclaved cured but it was found that the Phthalonitrile resin needed an additional post cure at 3750C for 8 hours in order to maximize mechanical properties. Decomposition kinetics were utilized to investigate the effect of post cure Phthalonitrile compared to the standard autoclave cure.

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Document Details

Document Type
Technical Report
Publication Date
Aug 20, 1999
Accession Number
ADA368621

Entities

People

  • Robert Boswell

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Airframes
  • Autoclaves
  • Composite Materials
  • Decomposition
  • Glass
  • Glass Transition Temperature
  • Heat Of Activation
  • Heat Treatment
  • High Temperature
  • Kinetics
  • Materials
  • Mechanical Properties
  • Scanning
  • Thermal Stability
  • Transition Temperature
  • Transitions

Fields of Study

  • Materials science

Readers

  • Analytical Chemistry
  • Immunology and Pathology
  • Thermal Physics or Thermal Science.