Accession Number:

AD1085874

Title:

Multifunctional Damage Tolerant Composite Materials

Descriptive Note:

Technical Report,01 Nov 2014,31 Oct 2018

Corporate Author:

UNIVERSITY OF ILLINOIS URBANA United States

Personal Author(s):

• Sottos,Nancy

Report Date:

2019-01-30

Pagination or Media Count:

18.0

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 fiberepoxy 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.

Descriptors:

• carbon fibers
• composite materials
• fatigue life
• tensile strength
• fibers
• graphitic materials
• materials
• unidirectional
• graphene
• lubricants
• mechanical properties
• physical properties
• specialty uses of chemicals
• fatigue (mechanics)
• orientation (direction)
• strength (general)

Subject Categories:

• Laminates and Composite Materials
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE