摘要
The preparation of graphene(GN)and graphene-intercalated halloysite nanotubes(HNTs)to form nanomaterials was achieved by using HNTs template.As a promising application,a series of the polytetrafluoroethylene(PTFE)nanocomposite filled with GN and GN/HNTs at different mass fractions were prepared.The mechanical and friction properties of PTFE nanocomposites depending on the mass fraction of graphene-intercalated HNTs(GN/HNTs)were intensively investigated.The comparison between the effects of GN and GN/HNTs serving as fillers on properties of PTFE was presented.The results showed that in terms of enhancing the tensile strength of PTFE,the enhancement effect of GN is superior to GN/HNTs,and in terms of the elongation at break,the GN/HNTs filler could reserve more toughness than GN.The Young’s modulus of the GN/HNTs incorporated into PTFE is about 1.9 times larger than pure PTFE,and is superior to GN/HNTs.The friction coefficient of PTFE nanocomposites filled with GN and GN/HNTs was slightly higher than pure PTFE and the latter was lower than the former.The volume wear rate of PTFE nanocomposites filled with GN/HNTs was obviously lower than the case with GN,which exhibited the better wear resistance of GN/HNTs used as filler.
基金
This work was funded by the Talent Introduction Fund of Yangzhou University(2012),the Zhenjiang High Technology Research Institute of Yangzhou University(2017),the Key Research Project-Industry Foresight and General Key Technology of Yangzhou(YZ2015020)
the Innovative Talent Program of Green Yang Golden Phoenix(yzlyjfjh2015CX073)
the Yangzhou Social Development Project(YZ2016072)
the nJiangsu Province Six Talent Peaks Project(2014-XCL-013)
the Jiangsu Industrial-Academic-Research Prospective Joint Project(BY2016069-02)
The authors also acknowledge the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions and the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions(PPZY2015B112).The data of this paper originated from the Test Center of Yangzhou University.
