Crystallization and Dielectric Properties of MWCNT /Poly(1-Butene) Composite Films by a Solution Casting Method.

Lingfei Li, Qiu Sun, Xiangqun Chen, Yongjun Xu, Zhaohua Jiang

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Article in Materials (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1 citing paper in PubMed.

Significantly Improved Dielectric Performance of Poly(1-butene)-Based Composite Films via Filling Polydopamine Modified Ba(ZrPolymers · 2021
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Authors and funding

5 authors.

Lingfei LiSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Qiu SunSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Xiangqun ChenSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.

Yongjun XuSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Zhaohua JiangSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China.

Funding

Natural Science Foundation Joint Project of Heilongjiang province LH2019E112

6 · The paper itself

Abstract

In this work, poly(1-butene) (PB-1) composite films with multi-walled carbon nanotubes (MWCNT) were prepared by a solution casting method. The relationship between the dielectric properties and the crystal transformation process of the films was investigated. It was indicated that there were two crystal forms of I and II of PB-1 during the solution crystallization process. With the prolongation of the phase transition time, form II was converted into form I. The addition of the conductive filler (MWCNT) accelerated the rate of phase transformation and changed the nucleation mode of PB-1. The presence of crystal form I in the system increased the breakdown strength and the dielectric constant of the films and reduced the dielectric loss, with better stability. In addition, the dielectric constant and the dielectric loss of the MWCNT/PB-1 composite films increased with the addition of MWCNT, due to the interfacial polarization between MWCNT and PB-1 matrix. When the mass fraction of the MWCNT was 1.0%, the composite film had a dielectric constant of 43.9 at 25 °C and 10

Indexed as

breakdown strengthdielectric propertiesmulti-walled carbon nanotubespoly(1-butene)solution crystallization

Identifiers

PMID32046036

DOI10.3390/ma13030755

PMCPMC7040708

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