Viscoelastic Characterization of Aliphatic Polyurethane Interlayers

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 hea...

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Bibliographic Details
Main Authors: MacAloney, Neil, Bujanda, Andres, Jensen, Robert, Goulbourne, Nakhiah
Format: Report
Language:English
Subjects:
ALIPHATIC COMPOUNDS
ALIPHATIC POLYURETHANE INTERLAYERS THERMOPLASTIC POLYURETHANE
COEFFICIENTS
COMPRESSION
DIFFERENTIAL SCANNING CALORIMETRY
FREQUENCY DOMAIN
MECHANICAL PROPERTIES
Mechanics
OPTICAL IMAGES
Organic Chemistry
PHYSICAL PROPERTIES
POISSON RATIO
POLYURETHANE RESINS
PRONY COEFFICIENTS
RHEOMETERS
RHEOMETRY
SHEAR PROPERTIES
STATICS
TENSILE PROPERTIES
Thermodynamics
THERMOPLASTIC RESINS
TRANSPARENT
VISCOELASTICITY
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Summary: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. The original document contains color images.