OMMT/PES/BMI复合材料的介电性能

doi:10.19595/j.cnki.1000-6753.tces.170537

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Abstract

The organic montmorillonite(OMMT) was obtained by using octadearyl dimethyl ammonium chloride(OTAC) modified sodium montmorillonite(Na-MMT). The allyl compound and bismaleimide(BMI) as the substrate, 2wt% of polyethersulfone(PES) and different contents(2-8wt%) of OMMT were added into matrix to prepared OMMT/PES/BMI multiphase composites. The changes of infrared characteristic and microstructure of Na-MMT were analyzed by Fourier transform infrared spectroscopy(FT-IR) and scanning electron microscopy(SEM). The results showed that the modification effect was obvious, and the sodium ion was replaced by OTAC organic cation, moreover lamellar structure of OMMT was clear. Dielectric properties test showed that the dielectric constant and dielectric loss tangent of the material display the trend of increased first and then decreased with the increase of mass fraction of OMMT, which reached the minimum of 3.49 and 0.0026 at 100Hz, respectively. The volume resistivity and breakdown strength at this point were also reached the maximum, which was 19.98×10¹⁵Ω·m and 26.07kV/mm, respectively, that increased by 102.4% and 38% compared to samples without OMMT.

Key words： Bismaleimide polyethersulfone montmorillonite dielectric properties

Received: 28 April 2017 Published: 13 June 2018

PACS:

TB332

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	Articles by authors
	Chen Yufei
	Guo Hongyuan
	Chu Hongyue
	Wang Botao

Cite this article:

Chen Yufei,Guo Hongyuan,Chu Hongyue等. Dielectric Properties of OMMT/PES/BMI Composites[J]. Transactions of China Electrotechnical Society, 2018, 33(11): 2620-2625.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170537 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I11/2620

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