Physical aging and electrical properties of polymers
- 7 November 2016
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
The mechanical and dielectric properties of solid polymers are usually measured as a function of temperature and frequency or temperature and time; occasionally, the influence of hydrostatic pressure is also considered. It has recently been shown that for mechanical properties, in particular creep, such a characterization is not complete.1, 2 Another parameter which strongly influences the behaviour of polymers is connected with physical aging, a process which occurs because solid polymers generally are not in thermodynamic equilibrium, so that their properties gradually change with the time elapsed after solidification of the melt.3, 4Keywords
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