| Issue |
MATEC Web Conf.
Volume 112, 2017
21st Innovative Manufacturing Engineering & Energy International Conference – IManE&E 2017
|
|
|---|---|---|
| Article Number | 04016 | |
| Number of page(s) | 6 | |
| Section | Advanced Materials | |
| DOI | https://doi.org/10.1051/matecconf/201711204016 | |
| Published online | 03 July 2017 | |
Specific heat of nano-ferrites modified composites
1 “Dunarea de Jos” University of Galati, Research and Development Centre for Thermoset Matrix Composites, Galati, Romania
2 Diagnose and Measurement Group, Galati, Romania
* Corresponding author: iulia.graur@ugal.ro
The specific heat of nano-ferrites modified composites was studied using differential scanning calorimeter (DSC) method in the temperature range of 30 to 150°C. Initially, nano-ferrites were introduced in epoxy systems in order to improve the electromagnetic properties of formed materials. Together with the changes in electromagnetic properties some modifications occur regarding thermal and mechanical properties. The materials were formed by placing 5g or 10g of ferrite into 250g polymer matrix leading to a very low weight ratio of modifying agent. At so low ratios the effect of ferrite presence should be insignificant according to mixing rule. Anyway there is possible to appear some chelation reaction with effects on thermal properties of materials. Three types of epoxy resins had been used as matrix and barium ferrite and strontium ferrite as modifying agents. The thermal analysis was developed on two heatingcooling cycles and the specific heat was evaluated for each segment of the cycle analysis.
© The Authors, published by EDP Sciences, 2017
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