1. Damage Mechanisms in a Toughened Acrylic Resin: Effect of Temperature and Thermal History
- Author
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Pini, Tommaso, Castellani, Leonardo, Briatico-Vangosa, Francesco, Frassine, Roberto, and Rink, Marta
- Subjects
Acrylic resins -- Analysis -- Thermal properties -- Mechanical properties ,Temperature effects -- Analysis ,Transmission electron microscopes ,Electron microscopy ,Engineering and manufacturing industries ,Science and technology - Abstract
The effect of temperature on the damage mechanisms occurring in a toughened acrylic resin was investigated by studying volume changes during tensile tests, analyzing the reversibility of the damage after applying proper thermal histories and by direct transmission electron microscope observations. It was found that an increase of temperature, from 0[degrees]C to 60[degrees]C, shifts the predominant mechanism from crazing to cavitation and shear yielding. When the latter occur, the material response is very susceptible to previous thermal treatments; and in particular to the cooling rate from above glass transition temperature. Crazing on the other hand is not influenced by the thermal history of the material., INTRODUCTION Acrylic resins are widely appreciated for their properties such as stiffness, transparency, and good weather resistance but they tend to yield by crazing showing a brittle fracture and this [...]
- Published
- 2019
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