Design and Properties of Fluoroelastomer Composites <italic style="font-style: italic">via</italic> Incorporation of MWCNTs with Varied Modification

Guang-Yao Yang; Li-Fen Tong; Xiao-Bo Liu

doi:10.1007/s10118-020-2405-y

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Design and Properties of Fluoroelastomer Composites via Incorporation of MWCNTs with Varied Modification

ARTICLE | Updated：2020-04-27

- Design and Properties of Fluoroelastomer Composites via Incorporation of MWCNTs with Varied Modification
- Chinese Journal of Polymer Science Vol. 38, Issue 9, Pages: 983-992(2020)
- Affiliations：
  
  Research Branch of Advanced Functional Materials, School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China
- Author bio：
  
  tonglifen0214@163.com (L.F.T)
  liuxb@uestc.edu.cn (X.B.L.)
- Funds：
- DOI：10.1007/s10118-020-2405-y
  CLC：
- Received：02 January 2020，
  
  Revised：2020-1-29，
  
  Accepted：17 February 2020，
  
  Online First：27 April 2020，
  
  Published：2020-09
- Accepted：
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Yang, G. Y.; Tong, L. F.; Liu, X. B. Design and properties of fluoroelastomer composites , via, incorporation of MWCNTs with varied modification. Chinese J. Polym. Sci. 2020, 38, 983–992

Guang-Yao Yang, Li-Fen Tong, Xiao-Bo Liu. Design and Properties of Fluoroelastomer Composites via Incorporation of MWCNTs with Varied Modification[J]. Chinese Journal of Polymer Science, 2020, 38(9): 983-992. DOI: 10.1007/s10118-020-2405-y.
Yang, G. Y.; Tong, L. F.; Liu, X. B. Design and properties of fluoroelastomer composites , via, incorporation of MWCNTs with varied modification. Chinese J. Polym. Sci. 2020, 38, 983–992 DOI： 10.1007/s10118-020-2405-y.

Guang-Yao Yang, Li-Fen Tong, Xiao-Bo Liu. Design and Properties of Fluoroelastomer Composites via Incorporation of MWCNTs with Varied Modification[J]. Chinese Journal of Polymer Science, 2020, 38(9): 983-992. DOI: 10.1007/s10118-020-2405-y. DOI：

摘要

Abstract

Multi-walled carbon nanotubes (MWCNTs) modified with silane coupling agent A-1120 (MWCNTs-A1120) were prepared. Compared with the raw MWCNTs

acidified MWCNTs (MWCNTs-COOH)

and MWCNTs grafted with EDA (MWCNTs-NH

)

MWCNTs-A1120 have the best dispersion in fluoroelastomer at the same doping ratio. Therefore

fluoroelastomer/MWCNTs-A1120 composite has the best mechanical properties with tensile strength of 13.92 MPa and elongation at break of 111.78%. Then

the effects of doping amount of MWCNTs-A1120 on the electrical properties of the composites were investigated. The dielectric constant of the composite increases with the increase of MWCNTs-A1120

and the dielectric loss does not change much at the low doping amount such as 0.5 wt%. When the doping amount of MWCNTs-A1120 is 5 wt%

the dielectric constant and the dielectric loss value are greatly increased

and the volume resistivity is greatly decreased

which proves that the conductive network is formed in the composite

so the filling amount of 5 wt% is the percolation threshold. The tensile deformation of the sample also affects the electrical properties of the composites. As the tensile deformation increases

the dielectric constant and dielectric loss of the composite decrease. For the composite with 5 wt% MWCNTs-A1120

excessive tensile deformation will destroy the conductive network structure of the composite

so the composite will change from conductive material to dielectric material. Therefore

such composite is a good candidate for flexible conductive material or flexible dielectric material used in harsh environments such as high temperatures and various aggressive solvents.

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Design and Properties of Fluoroelastomer Composites via Incorporation of MWCNTs with Varied Modification

DOI：10.1007/s10118-020-2405-y

摘要

Abstract

关键词

Keywords

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