Poly-etherimide epoxy diamine blends: Conductivity and breakdown voltage measurements at room temperature. (September 2018)

• Record Type: Journal Article
• Authors: Halawani, N.; Augé, J.L.; Gain, O.; Griseri, V.; Teyssèdre, G.; Pruvost, S.
• Is Part Of: Polymer degradation and stability. Volume 155(2018)
• Page Start: 153
• Page End: 161
• Publication Date: 2018-09
• Subjects: Epoxy -- Organic-organic blend -- Insulating material -- Electrical properties; Polymers -- Deterioration -- Periodicals; Stabilizing agents -- Periodicals; Polymères -- Dégradation -- Périodiques; Stabilisants -- Périodiques; 668.9
• DOI: 10.1016/j.polymdegradstab.2018.05.029
• Languages: English
• ISSNs: 0141-3910

Abstract

Abstract: 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. Thermoset-thermoplastic 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 (Eth ) and space-charge-limited conduction (SCLC) above Eth 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. Highlights: Electrical characterization of an epoxy/thermoplastic blend is examined Current is controlled by volume phenomena through SCLC approach Epoxy and blends showed contact emission at the electrode/sample interface Breakdown voltage increased with the increase of the percentage of thermoplastic