The Effects of Coupling Agents on the Electrical Properties of Polyimide/TiO2 Hybrid Films

Kai Yan; Xiao Xu Liu

doi:10.4028/www.scientific.net/AMM.556-562.371

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 556-562The Effects of Coupling Agents on the Electrical...

The Effects of Coupling Agents on the Electrical Properties of Polyimide/TiO₂ Hybrid Films

Abstract:

Polyamides (PI)-matrix composite films with inorganic nanoTiO₂ have been fabricated by employing in situ polymerization. Before addition, TiO₂ particles were firstly modified with coupling agents (KH550). The electric breakdown strength and micromorphology of hybrid films were characterized and investigated. Results indicated that nanoTiO₂ particles were homogeneously dispersed in the PI matrix for the addition of coupling agents and the electric breakdown strength of PI/TiO₂ composite films with KH550 were better than unmodified PI composite film. The breakdown field strength and tensile modulus of PI composite film with the inorganic content of 5 wt% were 200.1 (KV/mm). So the using coupling agent can effectively improve the compatibility and the homogenous dispersion of nanoTiO₂ particles in PI matrix. Meanwhile, the procedure described here offers an effective and simple method to produce PI/TiO₂ with excellent electrical needed for future application in electrical engineering field.

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Periodical:

Applied Mechanics and Materials (Volumes 556-562)

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371-374

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https://doi.org/10.4028/www.scientific.net/AMM.556-562.371

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Online since:

May 2014

Authors:

Kai Yan*, Xiao Xu Liu

Keywords:

Coupling Agents, Electrical Properties, Polyimide

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