Quantitative measurement of transfer film thickness of PTFE based composites by infrared spectroscopy

Gu, Yanqi; Wang, Zidan; Peng, Shiguang; Ma, Tianbao; Luo, Jianbin

doi:10.1016/j.triboint.2020.106593

Cited by 25 publications

(10 citation statements)

References 40 publications

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“…We suggest that during the friction process, with the rapid increase in temperature of the stainless-steel surface, the composites creep, flow and even decompose rapidly, thus breaking the continuity of the matrix and increasing the friction of the composites. 35 The theoretical simulation results are consistent with the experimental values, which proves the correctness of the model.…”

Section: Thermal-mechanical Coupling Analysissupporting

confidence: 78%

RETRACTED: Effect of surface treatment of carbon fibers on the mechanical and frictional properties of polyetheretherketone/polytetrafluoroethylene composites: Experimentation and finite element analysis

Xiao

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Polytetrafluoroethylene has many excellent properties and a wide range of applications, but its poor wear resistance, hardness, and creep resistance have severely limited the use of the polytetrafluoroethylene composites. In this work, the surface of carbon fibers was treated with silane coupling agent acetone solution, and then sintering technology was used to prepare carbon fibers/polyetheretherketone (PEEK)/ polytetrafluoroethylene composites. The mechanical and frictional wear properties of the composites were analyzed using an electronic tensile tester, a Shore hardness tester, and a frictional wear tester, and scanning electron microscopy was applied to analyze the surface morphology of the composites after wear. The experimental results shown that the addition of carbon fibers could significantly improve the mechanical properties of the composites, reduce the radial shrinkage, and increase the Shore hardness of the composites. Under the same experimental conditions, the carbon fibers (20 wt.%) /polyetheretherketone/polytetrafluoroethylene composites has the best wear resistance, with a friction coefficient of 0.196 and the wear rate of 2.41 × 10−6 mm3/N·m. In the theoretical simulation, the thermal conductivity of polytetrafluoroethylene composites was predicted using ANSYS software, with the changes in the temperature and friction force in the friction process. The theoretical simulation results matched with the experimental values, which proved the accuracy of the theoretical simulations.

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Section: Thermal-mechanical Coupling Analysissupporting

confidence: 78%

RETRACTED: Effect of surface treatment of carbon fibers on the mechanical and frictional properties of polyetheretherketone/polytetrafluoroethylene composites: Experimentation and finite element analysis

Xiao

2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…This destroys the continuity of the matrix and increased the friction of the composites. 37 In general, the results of the ANSYS simulation experiment were basically consistent with the experimental values, which proves the accuracy of the experimental results. The theoretical simulation results were consistent with the experimental values, which proved the correctness of the model.…”

Section: Resultssupporting

confidence: 74%

Effect of glass fibers length on the properties of polytetrafluoroethylene composites reinforced by glass fibers and graphite: Experimental and simulation study

Xiao

Gao

2021

High Performance Polymers

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Polytetrafluoroethylene (PTFE)-based matrix composites filled with glass fibers (GF) and graphite (GR) were prepared by an internal mixer and molded using a compression mold to produce test samples. The objective was to study the mechanical and tribological properties of PTFE composites filled with different lengths of GF. The fillers of GR and GF were 5 and 15 wt.%, respectively, with the lengths of the GF of 15, 20, 25, 30, and 35-μm in the work. The mechanical performance tests and tribological tests were carried out under the same conditions. The experimental results revealed that the mechanical properties and tribological properties of the PTFE composites filled with GF and GR were associated with the lengths of GF. When the length of GF increased from 15 to 20 μm, GF could be homogeneously dispersed in the PTFE-based matrix composites and the tensile strength reached the maximum value of 21.7 ± 3.3% MPa. Also, with 20-μm long GF, the composites exhibited the lowest coefficient of friction values and wear rates compared to PTFE with GF of the other lengths. The changes in frictional heat generation and frictional force of the composites during sliding friction were simulated using the finite element method. The theoretical simulation results matched with the experimental values, which proved the accuracy of the theoretical simulations.

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“…At the same time, the change of pollutant concentration in the process of catalytic degradation is quantitatively analyzed according to Lambert Beer's law [Eq. 3]: [43]

true normalA = Kbc

…”

Section: Resultsmentioning

confidence: 99%

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

et al. 2021

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Efficient charges separation and transfer are considered to be the key factors to achieve high efficiency photoelectric catalysis. Herein, we proposed that the internal potential difference and the macroscopic polarization field of the homotype BaTiO3/CdS pyroelectric heterojunction can adjust the photoelectric catalytic performance to achieve degradation of methylene blue (MB) and rhodamine B (RhB) dyes. Under 20–50 °C hot–cold cycles, light and external bias, the catalytic rate of BaTiO3/CdS for MB is 4.82×10−2 min−1, which is 1.29 times and 1.36 times higher than photoelectric catalytic rates of BaTiO3/CdS (3.74×10−2 min−1) and BaTiO3 (2.15×10−2 min−1) alone, respectively. In addition, the catalytic rate of BaTiO3/CdS for RhB is 3.07×10−2 min−1, which is 1.41 times and 1.28 times higher than photoelectric catalytic rates of BaTiO3/CdS (2.18×10−2 min−1) and BaTiO3 (1.45×10−2 min−1) alone, respectively. The improvement of catalytic efficiency is due to the generation of pyrogenerated and photogenerated carriers, and the macroscopic polarization field and the potential difference at the BaTiO3/CdS heterojunction interface can enhance the separation and transfer of charge. This study confirms that the homotype heterojunction based on the pyroelectric effect can use solar/thermal energy to achieve efficient photoelectric catalysis. This provides a reference for the design and development of new and efficient electrodes in the field of photoelectric catalysis.

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Quantitative measurement of transfer film thickness of PTFE based composites by infrared spectroscopy

Cited by 25 publications

References 40 publications

RETRACTED: Effect of surface treatment of carbon fibers on the mechanical and frictional properties of polyetheretherketone/polytetrafluoroethylene composites: Experimentation and finite element analysis

RETRACTED: Effect of surface treatment of carbon fibers on the mechanical and frictional properties of polyetheretherketone/polytetrafluoroethylene composites: Experimentation and finite element analysis

Effect of glass fibers length on the properties of polytetrafluoroethylene composites reinforced by glass fibers and graphite: Experimental and simulation study

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

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Quantitative measurement of transfer film thickness of PTFE based composites by infrared spectroscopy

Cited by 25 publications

References 40 publications

RETRACTED: Effect of surface treatment of carbon fibers on the mechanical and frictional properties of polyetheretherketone/polytetrafluoroethylene composites: Experimentation and finite element analysis

RETRACTED: Effect of surface treatment of carbon fibers on the mechanical and frictional properties of polyetheretherketone/polytetrafluoroethylene composites: Experimentation and finite element analysis

Effect of glass fibers length on the properties of polytetrafluoroethylene composites reinforced by glass fibers and graphite: Experimental and simulation study

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO3/CdS Heterojunction through Integration of Solar and Thermal Energy

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Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy