Effect of Recovered Silicon Filler Inclusion on Mechanical and Tribological Properties of Polytetrafluoroethylene (PTFE) Composite

Vishal, K.; Rajkumar, K.; Sabarinathan, P.

doi:10.1007/s12633-021-01250-w

Cited by 24 publications

(17 citation statements)

References 40 publications

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“…Figure 4 shows the COF behaviors of the pure PTFE, modified TPU ring-plates, and ZCuSn 10 Zn 2 ring-plates under seawater (1 MPa, 0.11 m/s). The pure PTFE presented an excellent friction reduction, and its COF stabilized at 0.05 as shown in Figure 4a, in line with the literature [32][33][34]. On the other hand, the TPU with no PTFE particles showed a severe wear process; its COF fluctuated remarkably, decreasing in the initial stage, but increasing sharply throughout the wear process, eventually reaching a high level of 0.21, which was four times that of pure PTFE.…”

Section: Analysis Of Coefficients Of Frictionsupporting

confidence: 86%

Reinforcement of Frictional Vibration Noise Reduction Properties of a Polymer Material by PTFE Particles

Dong

2022

Materials

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The insufficient lubrication of the contact interface between moving parts can easily induce severe friction vibration and noise under extreme working conditions, which will threaten the service life and reliability of polymer moving components, including water-lubricated stern tube polymer bearings. Thermoplastic polyurethane (TPU) modified by polytetrafluoroethylene (PTFE) particles was developed. The effects of PTFE on the wear and vibration behaviors of modified TPU sliding against the ZCuSn10Zn2 ring-plates were investigated. The coefficients of friction (COFs), wear mass losses, wear morphologies, frictional vibration, and noise were analyzed synthetically. The results showed that a suitable mass content of PTFE reduced the COFs and wear mass losses of the TPU composites by more than 50% and 40%, respectively, while presenting an excellent friction reduction. The lower COFs of modified TPU showed a small fluctuation amplitude and eliminated vibration waveforms at high vibrational frequencies, which was useful for reducing frictional vibration and noise. The knowledge gained in this study is useful for a better understanding of the wear behaviors of polymer composites, as well as for the design a new polymer material with good self-lubricating and frictional vibration and noise reduction properties.

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Section: Analysis Of Coefficients Of Frictionsupporting

confidence: 86%

Reinforcement of Frictional Vibration Noise Reduction Properties of a Polymer Material by PTFE Particles

Dong

2022

Materials

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“…However, the composite with 25% of untreated and alkaline‐treated AS particles exhibits a maximum shore D hardness value of 76 and 79. The highest hardness value obtained for the alkaline‐treated 25% composite was the evenly distributed added particle that could have improved the interaction of the particle with the matrix 38 . This can be expected to increase the strength of the polymer matrix.…”

Section: Resultsmentioning

confidence: 97%

“…The highest hardness value obtained for the alkaline-treated 25% composite was the evenly distributed added particle that could have improved the interaction of the particle with the matrix. 38 This can be expected to increase the strength of the polymer matrix. Beyond this, a 30% composite shows a decrease in the hardness value, possibly due to weak interaction by unevenly distributed particles and the void content of the prepared composite.…”

Section: Shore D Hardness Test Of As Particle Filled Polymer Compositementioning

confidence: 99%

A spatial distribution effect of almond shell bio filler on physical, mechanical, thermal deflection and water absorption properties of vinyl ester polymer composite

Palaniyappan¹,

Veiravan

Rajkumar

et al. 2022

Polymer Composites

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The present work deals with the effective utilization of almond shell bio-waste fillers in the production of vinyl ester polymer composites. The almond shell particle surface was chemically modified by alkaline treatment. The almond shell particles with varying weight percentages of 5%-30% were used to prepare the vinyl ester polymer composite. The experimental results show that a 25% addition of alkaline-treated almond shell particles significantly improved the mechanical properties of the composite when compared to pure vinyl ester and untreated almond-filled composite samples. The highest tensile, flexural, impact strength, and Shore D hardness of the 25% alkaline-treated almond shell composite were 54, 142 MPa, 31, and 79 kJ/m 2 , respectively. This was due to the alkaline treatment of almond shell particles, which improved the interfacial adhesion between the vinyl ester matrix and almond particles. The heat deflection temperature of the 25% alkaline treated almond shell particlefilled vinyl ester matrix composite was 72 C. The thermal insulating characteristics of alkali-treated almond shells were improved due to the reduction of quickly thermal degradable materials such as hemicelluloses and lignin, as indicated by Fourier transform infrared spectroscopic data, and more exposure of minerals to the surface, as confirmed by energy dispersive X-ray analysis. The addition of alkaline-treated almond shell particles improves the characteristics of the vinyl ester matrix and allows the development of biocomposites. K E Y W O R D S alkaline treatment, almond shell, bio-composite, mechanical properties, thermal deflection, vinyl ester

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“…Thus, the wear rate increases with maximum abrasion rates on the surface-to-surface contact. From the overall input parameters, load and sliding velocity Vishal et al [18] 5% Silicon 0.14 Â 10 À4 0.17…”

Section: Wear Ratementioning

confidence: 99%

“…Due to its higher thermal conductivity, the composite filled with graphite presented lower tribo-system temperatures in thermograph evaluations. [16,17] Vishal et al [18] experimentally analyzed the variation in properties of PTFE composite in mechanical and tribological aspects. Silicon wafer fillers used in the experiments are of weight percentage 1%-5%.…”

Section: Introductionmentioning

confidence: 99%

Experimentation and optimization of wear behavior on polytetrafluoroethylene composites using response surface methodology and bald eagle search optimization

Gajjal¹,

Lathkar²

2022

Polymer Composites

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In Industries, polytetrafluoroethylene (PTFE) is used as a solid lubricant due to its excellent toughness, lack of reactivity, high-thermal stability, and so forth. However, the abrasive resistive behavior is minimal for the virgin PTFE polymer. In this study, the wear and coefficient of friction (COF) of PTFE composite prepared by the combination of 10% halloysite, 10% graphite, and 10% bronze are investigated. The investigations are performed on a pin-on-disc test rig and analysis is done by response surface methodology (RSM), especially in Box-Behnken Design (BBD). The experimentation is performed by varying the sliding distance (Ds), sliding velocity (Vs), and applied load (L). In the analysis of COF, the load is considered as a significant parameter, and sliding distance is an influencing parameter for wear rate. From the experimentation, the proposed PTFE composite promotes COF of 0.0052 and a wear rate of 0.62 Â 10 À5 mm 3 /Nm. Such observed wear rate and COF are 2.8 times and 1.5 times better than the pure PTFE. The experimented outcomes are validated using hybrid DBN-based bald eagle search optimization (DBN-BESO), and RSM. From the validated results, the proposed hybrid DBN-BESO prediction process using the Matlab platform promotes closer values to the experimented outcomes. Besides, the parametric optimization is conducted using RSM and BESO approaches with the objective of minimum wear rate and COF. The optimized BESO results are superior to the RSM. BESO-based optimized wear rate is 0.0317 Â 10 À5 mm 3 /Nm and COF is 0.0352.

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Effect of Recovered Silicon Filler Inclusion on Mechanical and Tribological Properties of Polytetrafluoroethylene (PTFE) Composite

Cited by 24 publications

References 40 publications

Reinforcement of Frictional Vibration Noise Reduction Properties of a Polymer Material by PTFE Particles

Reinforcement of Frictional Vibration Noise Reduction Properties of a Polymer Material by PTFE Particles

A spatial distribution effect of almond shell bio filler on physical, mechanical, thermal deflection and water absorption properties of vinyl ester polymer composite

Experimentation and optimization of wear behavior on polytetrafluoroethylene composites using response surface methodology and bald eagle search optimization

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