Mijajlovikj, Maja and Risteska, Svetlana and Srebrenkoska, Vineta and Kostadinoska, Biljana and Gogu, Julija (2017) Determination of activation energy of polymer composites using dynamic mechanical analysis. In: International Scientific Conference Contemporary Materials – Banja Luka. (Unpublished)
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DETERMINATION OF ACTIVATION ENERGY OF POLYMER COMPOSITES USING DYNAMIC MECHANICAL ANALYSIS.pdf - Presentation Restricted to Registered users only until 10 June 2025. Download (200kB) |
Abstract
The activation energy is determined by analysis of visco-elastic response of the
composite when subjected to sinusoidal excitation. The activation energy associated with the glass
transition relaxation has been determined by using the three-point bending clamp provided in the
recently introduced Netzsch DMA 242 E Artemis dynamic mechanical analyzer. In the present study,
dynamic mechanical analyzer was used to characterize two different types of composite materials.
The activation energy for both materials was determined using Arrhenius relationship from
dynamic properties measured at different frequencies. In this study mathematical expression showing
the dependence of modulus measurements on the sample properties. The experimental results showed
that the evaluation of activation energy is affected by the heating rate and test frequency, as well as
the criterion by which the glass transition temperature (Tg) is established.
In the present study was been made compare on the activation energy based on the loss
tangent (tanδ) peak, on the loss modulus (E2) peak and storage modulus (E1) peak.
Keywords: activation energy, dynamic mechanical analysis (DMA), polymer composites,
glass transition
| Item Type: | Conference or Workshop Item (Other) |
|---|---|
| Subjects: | Engineering and Technology > Materials engineering Engineering and Technology > Mechanical engineering Natural sciences > Other natural sciences |
| Divisions: | Faculty of Technology |
| Depositing User: | Svetlana Risteska |
| Date Deposited: | 11 May 2021 09:18 |
| Last Modified: | 11 May 2021 09:18 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/28059 |
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