No abstract

In order to assess the influence of the operating temperature on the dielectric properties of recycled Polyethylene Terephthalate (PET) and Polyethylene Naphthalate (PEN) reinforced with inorganic fillers, a dielectric and thermal investigation was undertaken. Specimens were thermally aged at several temperatures between 90 and 2008C for 360 h. The effect of thermal aging time on dielectric and thermal properties was also investigated. The dielectric response and breakdown strength properties were evaluated. Differential scanning calorimetry (DSC) measurements showed that the degree of crystallinity and the glass transition temperature increased with aging temperature and duration. The data obtained showed that these materials exhibited a good resistance to thermal aging at temperatures below 1408C. Furthermore, it was found that the dielectric strength of the recycled PET and PEN and their composites decreased considerably for temperatures of over 1708C. POLYM. ENG. SCI., 58:701-712, 2018. 705 FIG. 7. DSC scans recorded at 108 C/min between 0 and 3008C for (a) the unaged RPET and its composites, and (b) the increase in the crystallinity versus aging temperature as shown by DSC measurements.

No abstract

No abstract

No abstract