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Journal of Materials Science

, Volume 15, Issue 7, pp 1814–1822 | Cite as

The mechanical properties of epoxy resins

Part 1 Mechanisms of plastic deformation
  • Salim Yamini
  • Robert J. Young
Papers

Abstract

The yield stress, σy, and Young's modulus, E, of a series of triethylenetetramine-cured epoxy resins have been measured as a function of resin composition and testing rate and temperature. It is found that for a given composition, both σy and E increase as the testing rate is increased and as the temperature is decreased. It is also found that under the same testing conditions, σy and E both decrease as the amount of curing agent in the resin is increased. The relationship between σy and E has been analysed using the theories of plastic deformation in glassy polymers of Argon and Bowden. Good agreement has been found with the Argon theory at low temperatures whereas the agreement with the Bowden theory is found to be good at all temperatures up to Tg. It appears therefore that the plastic deformation of epoxy resins which are thermosets is similar to that of glassy thermoplastics. The significance of the parameters derived from the two theories has been discussed in terms of the molecular structure of the resins.

Keywords

Polymer Mechanical Property Argon Epoxy Plastic Deformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1980

Authors and Affiliations

  • Salim Yamini
    • 1
  • Robert J. Young
    • 1
  1. 1.Department of MaterialsQueen Mary CollegeLondonUK

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