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Surface Functionalized Carbon Nanofibers and Their Effect on the Dispersion and Tribological Property of Epoxy Nanocomposites
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作者 朱艳吉 汪怀远 +1 位作者 LI Haiyan ZHU Jiahua 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2016年第6期1219-1225,共7页
Surface functionalization of carbon nanofibers(CNFs) was carried out, i e, CNFs were firstly oxidized and then the surface was silanized by 3-Aminopropyltriethoxysilane(APTES) via an assembly method. A new kind of... Surface functionalization of carbon nanofibers(CNFs) was carried out, i e, CNFs were firstly oxidized and then the surface was silanized by 3-Aminopropyltriethoxysilane(APTES) via an assembly method. A new kind of high wear resistance s-CNFs/epoxy composite was fabricated by in-situ reaction. FTIR spectroscopy was used to detect the changes of the functional groups produced by silane on the surface of CNFs. The tribological properties and microstructures of modified and unmodified CNFs/epoxy composites were studied, respectively. The expremental results indicate that APTES is covalently linked to the surface of CNFs successfully and improves the dispersion of CNF in epoxy matrix. The friction coefficients and the wear rates of s-CNFs/epoxy composites are evidently lower than those of u-CNFs/epoxy composites under the same loads. Investigations also indicate that abrasive wear is the main wear mechanism for u-CNFs/epoxy composite, with slight adhesive wear for s-CNFs/epoxy composite under the same sliding wear condition. 展开更多
关键词 polymer-matrix composites carbon nanofibers surfaces functionalization friction and wear morphology
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Tribological and Physicochemical Analysis of Squid Pen High-density Polyethylene Biocomposite for Medical Application
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作者 Besma Sidia Walid Bensalah 《Journal of Bionic Engineering》 SCIE EI CSCD 2022年第5期1481-1492,共12页
High-Density Polyethylene(HDPE)wear debris generated in the hip joint prothesis leads to its loosening.The aim of this study was to evaluate the potential of Squid Pen(SP)on the tribological and physicochemical proper... High-Density Polyethylene(HDPE)wear debris generated in the hip joint prothesis leads to its loosening.The aim of this study was to evaluate the potential of Squid Pen(SP)on the tribological and physicochemical properties of HDPE matrix.Biocomposites filled with 0,5,10,15 and 20 wt.%SP were elaborated by hot compression molding.Wear tests were carried out using a reciprocating pin-on-disc tribometer.Rockwell hardness,Fourier-Transform infra-red(FTIR)analysis,Scanning Electron Microscopy(SEM)of the biocomposite were analysed.FTIR analysis results of the biocomposites showed that an increase in the crystallinity rate was obtained with the addition of SP filler.Only 10 wt.%of SP has a significant effect on the hardness of the composite.The correlation between the friction coefficient and the wear resistance of the composite was investigated.The 5 wt.%SP-HDPE biocomposite has the lowest friction coefficient value with a decrease in the specific wear rate,compared to the unfilled HDPE.The SEM results showed that SP wear debris played an important role as a third roller body at the interface reducing the friction coefficient of the composite.It was concluded that the HDPE biocomposite could be successfully reinforced with 5 wt.%of SP. 展开更多
关键词 Squid pen biomaterial Tribological behaviours FTIR analysis wear morphology BIONIC
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