Effect of vapor‐grown carbon nanofibers on the sliding friction of natural rubber composites

Jiang, Hongxia; Ni, Qing‐Qing; Natsuki, Toshiaki; Yamamoto, Yutaka

doi:10.1002/pc.21085

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…The wear resistance of polymers is closely related to their viscoelastic properties , and the elastic modulus, in particular, has a very important influence on the wear behavior. Figure shows the storage modulus and viscous dissipation as a function of temperature from 0 to 120°C.…”

Section: Resultsmentioning

confidence: 99%

“…The wear resistance of polymers is closely related to their viscoelastic properties [29][30][31], and the elastic modulus, in particular, has a very important influence on the wear behavior. Figure 7 shows the storage modulus and viscous dissipation as a function of temperature from 0 to 120 C. At around the glass-transition temperature (T g , about 86 C), the storage modulus decreased suddenly, because the FGMs were transformed to a soft state.…”

Section: Viscoelastic Properties and Hardnessmentioning

confidence: 99%

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Fabrication of functionally graded nano‐TiO₂‐reinforced epoxy matrix composites

Wang

Zhu

et al. 2013

Polymer Composites

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Functionally graded nano‐TiO2 epoxy matrix composites were successfully fabricated using a centrifugal method. In the preparation of the composite, the aggregation of nano‐TiO2 occurred during curing, which had a negative effect on the composite performance. To solve this problem, we introduced a silane coupling agent to modify the surface of the nano‐TiO2, thereby improving the performance and mechanical properties simultaneously. The modified nano‐TiO2 (s‐TiO2) had better dispersion in the epoxy resin, making it possible to produce depth gradients of the mechanical properties of functionally graded materials (FGMs). The s‐TiO2 was characterized with respect to functional groups, morphology, and chemical elements using transmission electron microscopy, X‐ray photoelectron spectroscopy, and Fourier‐transform infrared spectroscopy. The results show that a silane layer was successfully coated on the surface. Also, the gradients of the mechanical and permittivity properties of the FGM indicated that by modifying the surface of the nano‐filler, it is possible to fabricate nano‐filler‐reinforced epoxy matrix FGMs using a centrifugal method. POLYM. COMPOS., 35:557–563, 2014. © 2013 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Section: Viscoelastic Properties and Hardnessmentioning

confidence: 99%

Fabrication of functionally graded nano‐TiO₂‐reinforced epoxy matrix composites

Wang

Zhu

et al. 2013

Polymer Composites

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“…Because sliding friction is closely related to the viscoelastic properties of polymers, it is important to investigate the dynamic mechanical properties to study the low friction coefficients of the FGMs . Figure shows the storage modulus and viscous dissipation as a function of temperature from 75 to 210°C.…”

Section: Resultsmentioning

confidence: 99%

Development of functionally graded vapor-grown carbon-fiber/polymer materials

Wang

Zhu

et al. 2013

Polym. Compos.

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We successfully produced vapor-grown carbon-fiber (VGCF)-incorporated polymer-based functionally graded materials (FGMs) using a centrifugal method. Gradual VGCF incorporation within an epoxy resin effectively produced depth gradients in the fiber distribution, microstructure, mechanical, and electrical conductivities and microwave absorbing properties. This VGCF-grading capability indicated that it is possible to tailor desired gradient filler content distributions by careful selection of the processing parameters to control variations in the property and microstructure precisely. The results confirmed that the volume content of VGCF in the epoxy substrate increased as a function of the normalized thickness along the centrifugal force direction, which caused a gradient. A uniform VGCF gradient in the composite can also be observed using field-emission scanning electron microscopy. In the case of the electrical properties, for example, the volume resistance exhibited a depth-graded distribution in the matrix as the electrical conductivity of the FGM nicely followed the grading direction; this is considered to be ideal for applications demanding an electrically conductive surface and an insulating core for FGMs. The results of microwave absorption behavior of FGMs indicate that the grading structure can lead to a graded absorption ability, which could be a better design for microwave absorption materials. The concept of FGMs bridges conventional materials and nanocomposites and will be effective for wider material applications. POLYM. COMPOS., 34:1774COMPOS., 34: -1781COMPOS., 34: , 2013

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