Graphene-intercalated HNTs for Reinforcing PTFE

作者：Liu Zan,Cao Baochong,Cheng Zhilin

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.

发文机构：School of Chemistry and Chemical Engineering

关键词：HALLOYSITENANOTUBESGRAPHENEpolytetrafluoroethylenemechanicalpropertiesFRICTION

分类号： TB3[一般工业技术—材料科学与工程]