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Article Dans Une Revue Polymer Degradation and Stability Année : 2018

Poly-etherimide epoxy diamine blends: Conductivity and breakdown voltage measurements at room temperature

Résumé

This paper presents an investigation on the current and breakdown voltage measurements in thermoset-thermoplastic blends based on an epoxy-amine/poly-etherimide phase separated material. Thermosetthermoplastic separated blends could be a novel material for insulation applications and can be compared to epoxy/inorganic composites systems. Pure epoxy network as well as the blends with 10 wt% of PEI were studied in terms of conduction and transient currents. An ohmic behavior below the threshold field (E th) and space-chargelimited conduction (SCLC) above E th are pointed out. Contact emission phenomenon was investigated by means of Schottky model and seems to be valid for both materials. The addition of 5 and 10 wt% of PEI into the epoxy system showed an increase in the values of breakdown voltage with the increase of the PEI amount.
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Dates et versions

hal-02010751 , version 1 (25-11-2020)

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N. Halawani, Jean-Louis Augé, O. Gain, Virginie Griseri, G. Teyssedre, et al.. Poly-etherimide epoxy diamine blends: Conductivity and breakdown voltage measurements at room temperature. Polymer Degradation and Stability, 2018, 155, pp.153-161. ⟨10.1016/j.polymdegradstab.2018.05.029⟩. ⟨hal-02010751⟩
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