Preparation and dielectric properties of silanized multi-walled carbon nanotubes/silicone rubber composites

被引：0

作者：

Zhang Z. ^{[1
]}

Liu C. ^{[1
]}

Li R. ^{[1
]}

Wu C. ^{[1
]}

Gong X. ^{[1
]}

Hu T. ^{[1
]}

机构：

[1] Hubei Provincial Key Laboratory of Green Materials for Light Industry, School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2020年 / 37卷 / 07期

关键词：

Composites; Dielectric properties; Multi-walled carbon nanotubes; Silane coupling agents; Silicone rubber;

D O I：

10.13801/j.cnki.fhclxb.20191113.004

中图分类号：

学科分类号：

摘要：

The three different silane coupling agents (methyltriethoxysilane (MTES), dimethyldiethoxysilane (DMDES) and trimethylethoxysilane (TMES)) were used to modify the surface of multi-walled carbon nanotubes (MWCNTs) under the hydrous conditions. The chemical structures of MWCNTs before and after modification were characterized by FTIR, XPS, TG and SEM. The different mass fractions of MWCNTs, MWCNTs-MTES, MWCNTs-DMDES and MWCNTs-TMES were filled in silicone rubber (SR). The MWCNTs/SR composites were prepared by mechanical blending. SEM images show that the silane modification can reduce the interaction between MWCNTs and improve their dispersion in SR. The tensile tests show that the interaction between MWCNTs and SR is enhanced and the compatibility between them is improved. The elastic modulus of the MWCNTs/SR composites shows no obvious change when the contents of modified MWCNTs are within 2wt%. The dielectric constant of MWCNTs/SR composite reaches 5.02 (at 104 Hz) when filled with 2wt% modified MWCNTs-MTES, which is 57% higher than that of the pure SR, while the dielectric loss is still less than 0.01 (at 104 Hz). © 2020, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：1675 / 1683

页数：8

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