The effect of surface modification with nitric acid on the mechanical and tribological properties of carbon fiber‐reinforced thermoplastic polyimide composite

Li, J.

doi:10.1002/sia.3089

Cited by 68 publications

(29 citation statements)

References 14 publications

(8 reference statements)

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“…As expected, the improvement in wear resistance is less pronounced for the reference composite as compared to that incorporating the aminated derivative with the same SWCNT content, related again to its lower load bearing capacity. Furthermore, surface functionalization of the CNTs enhances the wettability and the CNT-matrix interfacial adhesion, another factor that is known to improve the wear resistance of composites [40]. Therefore, the SWCNTs grafted with a polymer derivative can be considered as promising tribological additives for thermoplastic polymers.…”

Section: Tribological Propertiesmentioning

confidence: 99%

Towards the development of poly(phenylene sulphide) based nanocomposites with enhanced mechanical, electrical and tribological properties

Díez‐Pascual

Naffakh

2012

Materials Chemistry and Physics

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Novel poly(phenylene sulphide) (PPS) nanocomposites reinforced with an aminated derivative (PPS-NH2) covalently attached to acid-treated single-walled carbon nanotubes (SWCNTs) were prepared via simple melt-blending technique. Their morphology, viscoelastic behaviour, electrical conductivity, mechanical and tribological properties were investigated. Scanning electron microscopy revealed that the grafting process was effective in uniformly dispersing the SWCNTs within the matrix. The storage and loss moduli as a function of frequency increased with the SWCNT content, tending to a plateau in the low-frequency regime. The electrical conductivity of the nanocomposites was considerably enhanced in the range 0.1-0.5 wt% SWCNTs; electrical and rheological percolation thresholds occurred at similar nanotube concentrations. Mechanical tests demonstrated that with only 1.0 wt% SWCNTs the Young's modulus and tensile strength of the matrix improved by 51 and 37%, respectively, without decrement in toughness, ascribed to a very efficient load transfer. A moderate decrease in the friction coefficient and a 75% reduction in wear rate were found for the abovementioned nanotube loading, indicating that PPS-NH2-g-SWCNTs are good tribological additives for thermoplastic polymers. Based on the promising results obtained in this work, it is expected that these nanofillers will be used to develop highperformance thermoplastic/CNT nanocomposites for structural applications.

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Section: Tribological Propertiesmentioning

confidence: 99%

Towards the development of poly(phenylene sulphide) based nanocomposites with enhanced mechanical, electrical and tribological properties

Díez‐Pascual

Naffakh

2012

Materials Chemistry and Physics

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“…Differing from thermoset matrix, it is difficult for commercial sizing agents (epoxy, polyurethane, etc.) to form chemical bonding with thermoplastic matrix . Though some researchers developed thermoplastic sizing agents for thermoplastic composites, the high cost and complex sizing methods limited its commercial application .…”

Section: Introductionmentioning

confidence: 99%

Effect of preheat treatment on carbon fiber surface properties and fiber/PEEK interfacial behavior

Chen

Liu

et al. 2018

Polymer Composites

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In this work, the effect of preheat treatment on surface properties of carbon fiber (CF) and interfacial properties of CF‐reinforced polyether ether ketone (CF/PEEK) composites was investigated in detail. The sized T700SC CFs were preheated based on practical thermoplastic composites processing conditions. The obvious mass loss was obtained due to the sizing agent degradation. Fourier transform infrared spectroscopy and X‐ray photoelectron spectroscopy demonstrated that the concentration of sizing agents and activated carbon atoms decreased apparently for preheated fibers. Preheat treatment had negligible effect on tensile strength. Transcrystallinity structures were observed at fiber/PEEK interfaces using polarizing microscope and they had similar transcrystallinity density before and after preheat treatment. The microbond test was performed to determine interfacial shear strength (IFSS) between fibers and PEEK matrix. The IFSS increased from 40.16 to 46.32 MPa by 15.34%, which was against the trend of activated carbon atoms. Furthermore, the mechanisms of interfacial adhesion enhancement were discussed. The sizing layer became weak interface region because of poor chemical bonding between sizing agents and PEEK. Removing sizing via preheat treatment could enhance the interfacial adhesion. POLYM. COMPOS., 40:E1407–E1415, 2019. © 2018 Society of Plastics Engineers

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“…It is obvious that the bond structure seem more tight when the oxidation times of CF were 4 and 5 h, that is, there were few fibers separating from the rubber matrix. The low volume resistivities of NBR/CCB/CF‐4 h composites in Figure should be closely related with this firm bond structure . In addition, this firm bond structure had to be beneficial to the mechanical properties and conductive stability of NBR/CCB/CF composites.…”

Section: Resultsmentioning

confidence: 76%

Effect of adding carbon fiber on conductive stability of acrylonitrile‐butadiene rubber composites

Duan

Wang

Ren

et al. 2018

J of Applied Polymer Sci

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In this work, the conductive composites of acrylonitrile‐butadiene rubber (NBR) and conductive carbon black (CCB) were prepared. The volume resistivity of NBR/CCB composites became stable when the addition content of CCB reached 12 wt %. However, when carbon fiber (CF) was added into the composites, the volume resistivity of NBR/CCB/CF composites continued to decrease with the increase of CF addition, which resulted from the formation of the three‐dimensional conductive network in composite matrix. In addition, the effect of acid oxidation of CF surface on the mechanical proprieties and conductive stability of NBR/CCB/CF composites was studied. The results indicated the acid oxidation of CF surface improved the bond structure between NBR and CF, which further decreased the resistance and significantly improved the mechanical properties of the composites. It was demonstrated that the conductive stability of NBR composites after cyclic mechanical and temperature fatigues was remarkably enhanced with the addition of CF. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46668.

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The effect of surface modification with nitric acid on the mechanical and tribological properties of carbon fiber‐reinforced thermoplastic polyimide composite

Cited by 68 publications

References 14 publications

Towards the development of poly(phenylene sulphide) based nanocomposites with enhanced mechanical, electrical and tribological properties

Towards the development of poly(phenylene sulphide) based nanocomposites with enhanced mechanical, electrical and tribological properties

Effect of preheat treatment on carbon fiber surface properties and fiber/PEEK interfacial behavior

Effect of adding carbon fiber on conductive stability of acrylonitrile‐butadiene rubber composites

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