Viscoelastic Characterization of Aliphatic Polyurethane Interlayers

Abstract

The viscoelastic properties of several commercially available aliphatic thermoplastic polyurethanes were characterized. Differential scanning calorimetry showed that for Deerfield 4700, Inter Materials IM 800, IM 800A, IM 1600, and IM 2500, there is a permanent physical change that occurs during heating. Dynamic mechanical analysis and shear rheometry were used to generate elastic and shear modulus master curves in the frequency domain for Inter Materials IM 800 A. The Williams-Landel-Ferry constants and Prony coefficients were extracted from these master curves. Quasi-static mechanical properties were determined from tensile tests on dog bone samples and compression tests on cylindrical samples. Visual image correlation was used to determine the Poisson's ratio from the mechanical tests by simultaneously capturing longitudinal and lateral strain.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 2007
Accession Number
ADA474714

Entities

People

  • Andres Bujanda
  • Nakhiah Goulbourne
  • Neil Macaloney
  • Robert E. Jensen

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Coefficients
  • Composite Materials
  • Compression
  • Frequency
  • Frequency Domain
  • Glass Transition Temperature
  • Heat Treatment
  • Materials
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Polymers
  • Polyurethanes
  • Shear Modulus
  • Stresses
  • Tensile Strength
  • Three Dimensional

Readers

  • Image Processing and Computer Vision.
  • Mechanical Engineering/Mechanics of Materials.