Multifunctional Damage Tolerant Composite Materials

Abstract

Co-continuous, thermoplastic toughened epoxy matrix composites were developed with the goal of using the thermoplastic phase as both a toughening agent and a healing system. Our strategy involved the damage-triggered release of non-toxic, solvent-based healing agents that locally swelled and flowed the thermoplastic phase to repair the cracked region. Methods were developed to incorporate this novel self-healing resin system into a unidirectional, carbon fiber/epoxy prepreg using a bench-top prepregger. We observed significant fatigue life extension of these high fiber volume fraction self-healing composites without a reduction in tensile strength.

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 2019
Accession Number
AD1085874

Entities

People

  • Nancy Sottos

Organizations

  • University of Illinois Urbana–Champaign

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Air Force Research Laboratories
  • Carbon Fibers
  • Composite Materials
  • Electron Microscopy
  • Fibers
  • High Temperature
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Mechanical Properties
  • Microcapsules
  • Microscopes
  • Phase Separation
  • Scanning Electron Microscopy
  • Textiles

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Reinforced Composite Materials