Toughening Mechanism in Elastomer-Modified Epoxy Resins. Part 2.

Abstract

The role of matrix ductility on the toughenability and toughening mechanism of elastomer-modified DGEBA epoxies was investigated. Matrix ductility was varied by using epoxide resins of varying epoxide monomer molecular weights. These epoxide resins were cured using 4,4' diaminodiphenyl sulfone (DDS) and, in some cases, modified with 10% HYCAR(R) CTBN 1300X8. Fracture toughness values for the neat epoxies were found to be almost independent on the monomer molecular weight of the epoxide resin used. However, it was found that the fracture toughness of the elastomer-modified epoxies was very dependent upon the epoxide monomer molecular weight. Tensile dilatometry indicated that the toughening mechanism, when present, is similar to the mechanism found for the piperidine cured epoxies in Part 1. SEM and OM corroborate this finding. jg p6

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA304711

Entities

People

  • Albert F. Yee
  • R. A. Pearson

Organizations

  • General Electric

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Bulk Modulus
  • Electron Microscopes
  • Electron Microscopy
  • Epoxy Resins
  • Glass Transition Temperature
  • Low Temperature
  • Materials
  • Measurement
  • Mechanical Properties
  • Microscopy
  • Modulus Of Elasticity
  • Molecular Weight
  • Polymers
  • Resins
  • Shear Modulus
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Polymer Science and Engineering.