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Adhesion. II. Relationships between viscoelasticity, interfacial equilibrium, and the temperature dependence of adhesion

✍ Scribed by Huntsberger, J. R.

Publisher
Wiley (John Wiley & Sons)
Year
1963
Tongue
English
Weight
431 KB
Volume
1
Category
Article
ISSN
0449-2951

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✦ Synopsis

Abstract

The temperature dependence of adhesion is investigated by two different techniques. Data are given for several polymers. An hypothesis is presented which appears to provide a satisfactory explanation for the observed performance, and which attributes a major role to the extent of interfacial contact (or proximity to interfacial equilibrium). Striking differences are shown in the temperature dependence of adhesion for samples of a given pair of materials which were prepared under different bonding conditions. The behavior is believed to be established by the relationships between the viscoelastic response of the adhesive, the temperature and effective strain rate of the adhesion test, and the concentration of stress at interfacial discontinuities.

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Adhesive strength shows temperature and rate dependencies that reflect viscoelastic properties of an adhesive. Similarly, a critical strain energy release rate is expected to show temperature and rate dependencies because deformation and fracture of the adhesive occur at the time of the measurement