Damage mechanisms in a toughened acrylic resin: Effect of temperature and thermal history

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. I...

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Bibliographic Details
Published in:Polymer engineering and science 2019-03, Vol.59 (3), p.566-572
Main Authors: Pini, Tommaso, Castellani, Leonardo, Briatico‐Vangosa, Francesco, Frassine, Roberto, Rink, Marta
Format: Article
Language:English
Subjects:
Acrylic resins
Analysis
Cavitation
Cooling rate
Crazing
Damage
Electron microscopy
Glass transition temperature
Mechanical properties
Polymers
Temperature
Temperature effects
Tensile tests
Thermal properties
Transmission electron microscopes
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Summary: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°C to 60°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. POLYM. ENG. SCI., 59:566–572, 2019. © 2018 Society of Plastics Engineers
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.24971