Shelf Life Determination of Epoxy Prepregs and Film Adhesives. Revision.

Abstract

Kinetic data describing the cure of a Kevlar/epoxy prepreg and an epoxy film adhesive were determined by the use of Differential Scanning Calorimetry. For the Kevlar/epoxy prepreg, a correlation was found between the heat of reaction and percent resin flow; a similar correlation was found between the heat of reaction and lap-shear strength for the film adhesive. An equation was derived for the determination of the 'B' stage time required to yield an epoxy prepreg possessing the desired flow properties. The effects of storage temperature on the shelf-life of both the prepreg and film adhesive were determined.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1979
Accession Number
ADA304673

Entities

People

  • B. G. Parker

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Arrhenius Equation
  • Chemical Kinetics
  • Contractors
  • Epoxy Resins
  • Equations
  • Films
  • Heat Of Activation
  • Heat Of Reaction
  • Materials
  • Physical Chemistry
  • Physical Properties
  • Reaction Orders
  • Resins
  • Shear Strength
  • Shelf Life
  • Test And Evaluation
  • United States

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.
  • Reinforced Composite Materials