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High-performance PTFE nanocomposites based on halloysite nanotubes

Published online by Cambridge University Press:  27 February 2018

Zhi-Lin Cheng ,
Xing-Yu Chang ,
Zan Liu ,
Dun-Zhong Qin  and
Ai-Ping Zhu
Zhi-Lin Cheng*
Affiliation:
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
Xing-Yu Chang
Affiliation:
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
Zan Liu
Affiliation:
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
Dun-Zhong Qin
Affiliation:
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China Jiangsu Sinvochem Co. Ltd., Yangzhou 225002, China
Ai-Ping Zhu
Affiliation:
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China Zhenjiang High Technology Research Institute of Yangzhou University, Zhenjiang 212000, China
*
*E-mail: zlcheng224@126.com
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Abstract

Halloysite nanotubes (HNTs)/polytetrafluoroethylene (PTFE) nanocomposites were prepared by the cold compression moulding method. The effects of addition of HNTs (HNTs ‘filling’) on the performances of PTFE were explored using X-ray diffraction, Fourier Transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis which showed that HNTs were well dispersed in the PTFE matrix by means of physical mixing at lower contents of 2–5 wt.%; the introduction of HNTs into PTFE could improve the heat stability of the PTFE. Furthermore, the mechanical and tribological performances of the nanocomposites were measured to examine the filling effect. The tensile strength of the HNTs/PTFE nanocomposites at 2–5 wt.% HNTs content increased by ~3.5% while their wear rates decreased by 55–90% relative to pure PTFE, clear proof of the filling effect of HNTs with a high aspect ratio.

Keywords

PTFEHNTsnanocompositesmechanicaltribological
Type
Research Article
Information
Clay Minerals , Volume 52 , Issue 4 , December 2017 , pp. 427 - 438
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2017

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