A Fire-Resistant Epoxy

Abstract

The flammability, thermomechanical properties, and fire response of the diglycidylether of 1,1 -dichloro-2,2-bis(4- hydroxyphenyl)ethylene (DGEBC) cured with several hardeners were examined and compared to diglycidylether of bisphenol-A (DGEBA) systems. The DGEBC and DGEBA were cured with (1) triethylenetetramine, (2) methylenedianiline, (3) the parent phenol (BPC or BPA), (4) catalytic amounts of (2-ethyl-4-methylimidazole) (EMI-24), and (5) the dicyanate of bisphenol-C. Cured samples were measured for strength, modulus, flame resistance (limiting oxygen index (LOI), UL-94 V), flaming heat release rate, and heat release capacity. The mechanical properties of the DGEBC and DGEBA systems were equivalent but the DGEBC systems exhibited superior flame resistance and 50% lower heat release rate and heat release capacity than the corresponding DGEBA system. The DGEBC cured with methylenedianiline had an LOI of 30-31, exhibited UL 94 V-O/5V behavior and easily passed the Federal Aviation Administration heat release requirement Federal Aviation Regulation 25.853 (a-l) as a single-ply glass fabric lamina.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2001
Accession Number
ADA396763

Entities

People

  • Lauren M. Castelli
  • Richard E. Lyon
  • Richard Walters

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Chemical Reactants
  • Chemical Synthesis
  • Chemistry
  • Combustion
  • Epoxy Resins
  • Fires
  • Glass Transition Temperature
  • Heat Energy
  • Heat Of Combustion
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Performance Tests
  • Resins
  • Test Methods
  • Transition Temperature
  • Transitions

Readers

  • Fire Suppression Systems Design.
  • Polymer Science and Engineering.
  • Reinforced Composite Materials