Surface-modified halloysite nanotubes as fillers applied in reinforcing the performance of polytetrafluoroethylene

被引：8

作者：

Cheng, Zhi-Lin ^{[1
]}

Chang, Xing-Yu ^{[1
]}

Liu, Zan ^{[1
]}

Qin, Dun-Zhong ^{[1
,2
]}

机构：

[1] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China

[2] Jiangsu Sinvochem Co Ltd, Yangzhou 225002, Jiangsu, Peoples R China

来源：

CLAY MINERALS | 2018年 / 53卷 / 04期

关键词：

PTFE; HNTs; surface modification; mechanical properties; tribological properties; MECHANICAL-PROPERTIES; PTFE; WEAR; COMPOSITES; SILICA; AGENT;

D O I：

10.1180/clm.2018.48

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to improve the dispersibility of halloysite nanotubes (HNTs) in polytetrafluoroethylene (PTFE), the modification of HNT surfaces was studied with three types of modifiers (polymethyl methacrylate [PMMA], sodium dodecyl sulfate [SDS] and carboxylic acid). The modified HNTs were characterized by Fourier-transform infrared (FTIR) spectrometry, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and contact angle measurements. The HNTs were used to reinforce the mechanical properties of PTFE. The mechanical results indicated that the tensile strength of the modified HNT-filled PTFE nanocomposites (F-HNT/PTFE) improved to an acceptable degree and Young's modulus increased significantly. The tribological results showed that the wear rate of F-HNT/PTFE decreased by 21-82 and 9-40 times compared to pure PTFE and the pristine F-HNT/PTFE, respectively.

引用

页码：643 / 656

页数：14

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