Multi-walled carbon nanotubes/epoxy resin (MWNTs/EP) nanocomposites with different MWNTs contents have been prepared successfully. The influence of MWNTs on the friction and wear behaviors of the nanocomposites was investigated by a friction and wear tester under dry-sliding contact conditions. The relative humidity of the air was about 50±10%. Contrast to pure EP, MWNTs/EP nanocomposites showed not only higher wear resistance but also smaller friction coefficient. MWNTs could dramatically reduce the friction and improve the wear resistance behaviors of the nanocomposites. The mechanisms of the significant improvements on the tribological properties of the MWNTs/EP nanocomposites were also discussed.
Abstract Ni/P/single-walled carbon nanotubes (SWNTs) composite coatings as well as Ni/P coating have been prepared successfully by electroless plating technique. The tribological properties of the composite coatings were investigated by a friction and wear tester. Comparing with Ni/P coating, Ni/P/SWNTs composite coatings showed not only higher wear resistance but also lower friction coefficient. The electrochemical properties of the composite coatings were studied using electrochemical workstat...
#1Hui Cai(CAS: Chinese Academy of Sciences)H-Index: 2
#2Fengyuan Yan(CAS: Chinese Academy of Sciences)H-Index: 28
Last. Qunji Xue(CAS: Chinese Academy of Sciences)H-Index: 24
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Polyimide/carbon nanotube (PI/CNT) nanocomposites with different proportions of CNT were fabricated by in situ process. The bending strength and microhardness of the PI/CNT nanocomposites were measured. The friction and wear behavior of the nanocomposites was evaluated on an M-2000 friction and wear tester. As the results, the bending strength and microhardness of the PI/CNT nanocomposites increased with increasing CNT content and reached stable values at a certain content of CNT. CNT could effe...
Abstract Different types of catalytically grown multiwall carbon nanotubes (MWNTs) were dispersed in an epoxy resin, and then the mechanical properties of the MWNTs–epoxy composites were tested. MWNTs were synthesized by catalytic decomposition of acetylene either on a Co x Mg (1 − x ) O solid solution or on a Co/NaY supported catalyst at 600 °C. MWNTs surface functionalization by chemical treatment allows a better dispersion of nanotubes in the epoxy matrix. Tensile tests were performed on comp...
Last. Zhude Xu(ZJU: Zhejiang University)H-Index: 24
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Carbon nanotube/polytetrafluoroethylene (CNT/PTFE) composites with different volume fractions were prepared and their friction and wear properties were investigated using a ring-on-block under dry conditions. It was found that CNTs signifi-cantly increased the wear resistance of PTFE composites and decreased their coefficient of friction. PTFE composites with 15–20 vol.% CNTs exhibited very high wear resistance. The significant improvements in the tribological properties of CNT/PTFE composites a...
The effect of the incorporation of single- walled carbon nanotubes (SWNTs) onto a diglycidyl ether of bisphenol A-based (DGEBA) epoxy resin cure reaction was investigated by thermal analysis and Raman spectroscopy. The results of the investigation show that SWNTs act as a strong catalyst. A shift of the exothermic reaction peak to lower temperatures is, in fact, observed in the presence of SWNTs. Moreover, these effects are already noticeable at the lowest SWNT content investigated (5%) with sli...
Last. X.B. Zhang(ZJU: Zhejiang University)H-Index: 6
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Abstract Ni–P–carbon nanotube (CNT) composite coating and carbon nanotube/copper matrix composites were prepared by electroless plating and powder metallurgy techniques, respectively. The effects of CNTs on the tribological properties of these composites were evaluated. The results demonstrated that the Ni–P–CNT electroless composite coating exhibited higher wear resistance and lower friction coefficient than Ni–P–SiC and Ni–P–graphite composite coatings. After annealing at 673 K for 2 h, the we...
Last. D.H. Cheng(SHU: Shanghai University)H-Index: 2
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Abstract Carbon nanotubes (CNTs) have super-strong mechanical characteristics and unique hollow nanotube structure and are believed as very ideal materials for fabricating the excellent composites. In this paper, tribological properties of Ni–P-CNTs composite coating prepared by electroless technique were investigated using a ring-on-block test rig. The results indicated that addition of CNTs would result in an increase in hardness of the composite coating. Due to reinforcement and reduced frict...
Last. Jinbo Bai(ECP: École Centrale Paris)H-Index: 48
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Multi-walled carbon nanotube/epoxy resin composites have been fabricated. By choosing an over-aged hardener, relatively soft and ductile matrix, a rubbery epoxy resin, has been obtained. This made possible to evaluate the effect of nanotube addition on the whole stress-strain curve up to high strain level. The mechanical and electrical properties of the composite with different weight percentages of nanotubes have been investigated. The Young's modulus and the yield strength have been doubled an...
Multiwalled carbon nanotubes (MWNT) reinforced epoxy composite thin films were prepared by a microfabrication process and their elastic modulus was determined using a shaft-loaded blister test and linear and nonlinear elasticity models. Compared to net resin thin films, a 20% increase in elastic modulus was seen when 0.1 wt % MWNTs were added, suggesting MWNT alignment by spin coating. Electron microscopic observations of the fracture surfaces suggested high interfacial shear stress between MWNT...
Abstract The growth of hotspots within polymer bonded explosives can lead to thermal decomposition and subsequent initiation of the energetic material. An embedded structural health monitoring framework is proposed where carbon nanotubes are embedded within the polymer binder medium of polymer bonded explosives. The presence of the distributed carbon nanotube network enables the detection of hotspots through the analysis of the piezoresistive sensing response. The piezoresistive response correla...
The interface of fiber-polymer matrix has a critical role in controlling the mechanical features of polymer composites. Most of the studies focused on the application of reduced graphene oxide in enhancing the interfacial properties of the composite. In this study, we focused on utilising the Graphene nano-plates (GNPs) with average diameter of 5–10 µm. The GNPs were assessed by different techniques of XRD and AFM. The GNPs incorporated into the epoxy matrix, and then the high velocity impact re...
#1R. Jeyakumar(Sri Krishna College of Engineering & Technology)H-Index: 1
#2R. Ramamoorthi(Sri Krishna College of Engineering & Technology)H-Index: 3
Last. K. Balasubramanian(Sri Krishna College of Engineering & Technology)H-Index: 1
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Abstract Polymer nanocomposites have observed massive development in modern era due to their possible applications in a wide range of engineering industries. It is prominent that the combinations of nano fillers with polymer matrix offer materials with excellent properties, which are not feasible by using an individual element. The investigation on mechanical properties such as tensile strength, flexural strength, impact strength, micro hardness, interlaminar shear strength and compression stren...
#1Kalathil A. Arshad(IITD: Indian Institute of Technology Delhi)H-Index: 1
#2Jaswant K. Hirwani(IITD: Indian Institute of Technology Delhi)H-Index: 1
Last. Sujeet K. Sinha(IITD: Indian Institute of Technology Delhi)H-Index: 29
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AbstractThe effects of ultra-high molecular weight polyethylene (UHMWPE) as filler on two biocompatible epoxies on tribological and mechanical properties were studied. SU-8 and Structalit 8801 (a t...
Last. X. H. Cheng(SJTU: Shanghai Jiao Tong University)H-Index: 1
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ABSTRACTIn this paper, rare earth (RE) modified carbon nanotubes (CNTs) were obtained by surface modification of multi-carbon nanotubes (MWCNTs) with rare earth LaCl3, and composite materials were ...