Relaxation Modulus Ert: Time and Temp Dependence PowerPoint PPT Presentation

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Title: Relaxation Modulus Ert: Time and Temp Dependence


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Relaxation Modulus Er(t) Time and Temp Dependence
Lowest T T ltlt Tg
Glassy
Leathery
Rubbery plateau
Rubbery flow
Highest T T gt Tg
Viscous Flow (liquid)
Log time
Tm
temp
Tg
  • Decrease Er (t) with increase temp.
  • Significant decrease of Er (t) at T ? Tg and Tm
  • Decrease Er (t) with increase time
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