Experimental and Analytical Investigations on Tribological Properties of PTFE/AP Composites

Wang, Hai; Sun, Annan; Qi, Xiaowen; Dong, Yu; Fan, Bin

doi:10.3390/polym13244295

Cited by 15 publications

(5 citation statements)

References 34 publications

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“…31 Respect to CFNS, the absorption band at 3340 cm À1 belongs to the N-H stretching vibration from amide groups in CFNS. 25,32 A reinforced signal around 1626 cm À1 is primarily contributed by the C=O stretching vibration from amide groups. 33 The increased number of methylene groups originating from DOPAC also leads to the reinforcement of C-H stretching vibration (2929 and 2850 cm À1 ).These signals together with the benzene skeleton vibration (around 1574 cm À1 ) 34 all refer to the successful amidation between ANS and DOPAC.…”

Section: Catechol Group-functionalized and Nano Silica-based Hybrid F...mentioning

confidence: 99%

Wear‐ and UV‐resistant polycarbonate‐based composite films reinforced by a novel inorganic–organic hybrid filler

Wang,

Gao,

Weng

et al. 2024

J of Applied Polymer Sci

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As one of the five major engineering plastics, polycarbonate (PC) has been applied in many industrial fields. However, its poor wear‐ and UV‐ resistance greatly limit its further promotion. Inspired by the dual benefits of inorganic–organic hybrid filler, in this study, we developed a novel type of catechol group‐ and nano silica‐containing reinforcing filler (CFNS) for the preparation of wear‐ and UV‐resistant PC‐based composite films. With a low level of filler content (1%), the coefficient of friction (COF) was distinctly reduced from 0.14 (neat PC film) to 0.06 (composite film), benefiting from a wear‐resistant surface layer. On the basis of ensuring high and stable transmittance for visible light, the composite films also exhibit strengthened capacity of UV shielding for the waveband from 293 to 400 nm. In addition, the general performance of composite films including tensile strength, tensile modulus, and thermal stability have also been improved in different degrees. Therefore, the composite films reinforced by CFNS are highly promising for a wide range of applications, ascribed to their improved general properties as well as two additional functions of wear‐ and UV‐resistance.

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Section: Catechol Group-functionalized and Nano Silica-based Hybrid F...mentioning

confidence: 99%

Wear‐ and UV‐resistant polycarbonate‐based composite films reinforced by a novel inorganic–organic hybrid filler

Wang,

Gao,

Weng

et al. 2024

J of Applied Polymer Sci

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“…Authors found that coating of the fluoropolymer PTFE on stainless steel was effective in lowering the COF from 1.2 to 0.16. The low and stable behavior of the COF was due to the synergistic lubrication effects of PTFE [34].…”

Section: Friction and Wear Resistancementioning

confidence: 99%

Fluorinated Ethylene Propylene Coatings Deposited by a Spray Process: Mechanical Properties, Scratch and Wear Behavior

et al. 2022

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To increase the lifetime of metallic molds and protect their surface from wear, a fluorinated ethylene propylene (FEP) polymer was coated onto a stainless-steel (SS304) substrate, using an air spray process followed by a heat treatment. The microstructural properties of the coating were studied using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) as well as X-ray diffraction. The mechanical properties and adhesion behavior were analyzed via a nanoindentation test and progressive scratching. According to the results, the FEP coating had a smooth and dense microstructure. The mechanical properties of the coatings, i.e., the hardness and Young’s modulus, were 57 ± 2.35 and 1.56 ± 0.07 GPa, respectively. During scratching, successive delamination stages (initiation, expansion, and propagation) were noticed, and the measured critical loads LC1 (3.36 N), LC2 (6.2 N), and LC3 (7.6 N) indicated a high adhesion of the FEP coating to SS304. The detailed wear behavior and related damage mechanisms of the FEP coating were investigated employing a multi-pass scratch test and SEM in various sliding conditions. It was found that the wear volume increased with an increase in applied load and sliding velocity. Moreover, the FEP coating revealed a low friction coefficient (around 0.13) and a low wear coefficient (3.1 × 10−4 mm3 N m−1). The investigation of the damage mechanisms of the FEP coating showed a viscoelastic plastic deformation related to FEP ductility. Finally, the coating’s resistance to corrosion was examined using electrochemical measurements in a 3.5 wt% NaCl solution. The coating was found to provide satisfactory corrosion protection to the SS304 substrate, as no corrosion was observed after 60 days of immersion.

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“…Polymer composite materials (PCMs) based on amorphous-crystalline linear polymers such as polytetrafluoroethylene (PTFE) [ 7 , 8 ] are currently widely used as structural materials, including for tribotechnical purposes [ 9 ]. They have unique antifriction properties, high chemical inertness, and heat and cold resistance [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Polymer Composite Materials Chaotically Reinforced with Spherical and Cylindrical Inclusions

et al. 2022

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The technical and economic efficiency of new PCMs depends on the ability to predict their performance. The problem of predicting the properties of PCMs can be solved by computer simulation by the finite element method. In this work, an experimental determination of the physical and mechanical properties of PTFE PCMs depending on the concentration of fibrous and dispersed filler was carried out. A finite element model in ANSYS APDL was built to simulate the strength and load-bearing capacity of the material with the analysis of damage accumulation. Verification of the developed computer model to predict the mechanical properties of composite materials was performed by comparing the results obtained during field and model experiments. It was found that the finite element model predicts the strength of chaotically reinforced spherical inclusions of composite materials. This is due to the smoothness of the filler surfaces and the lack of filler dissection in the model. Instead, the prediction of the strength of a finite element model of chaotically reinforced cylindrical inclusions of composite materials requires additional analysis. The matrix and the fibrous filler obviously have stress concentrators and are both subject to the difficulties of creating a reliable structural model.

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Experimental and Analytical Investigations on Tribological Properties of PTFE/AP Composites

Cited by 15 publications

References 34 publications

Wear‐ and UV‐resistant polycarbonate‐based composite films reinforced by a novel inorganic–organic hybrid filler

Wear‐ and UV‐resistant polycarbonate‐based composite films reinforced by a novel inorganic–organic hybrid filler

Fluorinated Ethylene Propylene Coatings Deposited by a Spray Process: Mechanical Properties, Scratch and Wear Behavior

Modeling of Polymer Composite Materials Chaotically Reinforced with Spherical and Cylindrical Inclusions

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