Kinetic Analysis and Characterization of Epoxy Resins ... - FedOA
Kinetic Analysis and Characterization of Epoxy Resins ... - FedOA
Kinetic Analysis and Characterization of Epoxy Resins ... - FedOA
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Experimental 92<br />
terial <strong>of</strong> absorbing electric energy <strong>and</strong> then the transformation <strong>of</strong> energy to<br />
heat;<br />
• Specific heat coefficient: this parameter can determine apparently dysfunctional<br />
behaviour <strong>of</strong> samples undergoing dielectric heating;<br />
• Frequency: the frequency <strong>of</strong> MW radiations are fixed at values <strong>of</strong> 915 MHz or<br />
2,45 GHz. The first one is more indicated for solid samples <strong>of</strong> big dimensions,<br />
while the second is more suitable for samples in a liquid state or <strong>of</strong> small<br />
dimensions;<br />
• Power: the power generated in industrial microwave plants ranges from 2 to<br />
100 KW. As expected the heating rate increases with the power. However<br />
an excessive heating rate can cause the formation <strong>of</strong> non uniform products<br />
<strong>and</strong> <strong>of</strong> various imperfections;<br />
• Mode stirrer: these are devices for generating perturbation <strong>of</strong> electromagnetic<br />
field inside the applicator cavity for improving its uniform distribution.<br />
92