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Journal articles on the topic 'Polytetrafluoroethylene (PTFE)'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Defor, Charles, and Shih-Feng Chou. "Electrospun polytetrafluoroethylene (PTFE) fibers in membrane distillation applications." AIMS Materials Science 11, no. 6 (2024): 1179–98. https://doi.org/10.3934/matersci.2024058.

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<p>Polytetrafluoroethylene (PTFE) is a fully fluorinated linear polymer with a (CF<sub>2</sub>-CF<sub>2</sub>)<sub>n</sub> backbone. High molecular weight PTFEs are chemically inert while possessing excellent hydrophobic surface properties attributed to their low surface energy. These characteristics make PTFE an excellent candidate for membrane distillation application among all other hydrophobic polymers. In this review, the electrospinning processes of PTFE fibers are discussed in detail with a focus on various electrospinning effects on the resulti

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2

Budnik, Oleg, Anatoliy Budnik, Valentin Sviderskiy, Kristina Berladir, and Pavel Rudenko. "Structural Conformation of Polytetrafluoroethylene Composite Matrix." Chemistry & Chemical Technology 10, no. 2 (2016): 241–46. http://dx.doi.org/10.23939/chcht10.02.241.

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Enhancement of physical and mechanical properties and structuring activity of polytetrafluoroethylene as matrix of composites by means of mechanical activation is shown. Operating modes of mechanical activation equipment are defined, in which the service properties of PTFE are maximized. The effect of mechanical activation technology on restructuring and change of morphology and supramolecular structure of PTFE is detected for the first time.

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3

Huang, Chi Yuan, Mei Chuan Kuo, and Min Lih Roan. "The Effect of Surface Modification of Polytetrafluoroethylene (PTFE) on the Properties of POM/PTFE Fiber Composites." Key Engineering Materials 642 (April 2015): 253–58. http://dx.doi.org/10.4028/www.scientific.net/kem.642.253.

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Surface modification of polytetrafluoroethylene (PTFE) fiber by plasma grafting polymerization with acrylamide (AAm) was studied to improve the compatibility between polyacetal (POM) and PTFE. The best modified PTFE manufactured by self-designed plasma polymerization was investigated and denoted as AAm (20wt%)-g (plasma 30min)-PTFE. The grafting polymerization is successful and shown by ESCA spectra of modified PTFE fibers. It is also proved by SEM photographs and the improvement of properties of the POM/PTFE composites. As a result, the friction coefficients, Taber wear factors, and impact st

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4

Park, Jin-Young, Jung-Hee Lee, Chun-Ho Kim, and Young-Jin Kim. "Fabrication of polytetrafluoroethylene nanofibrous membranes for guided bone regeneration." RSC Advances 8, no. 60 (2018): 34359–69. http://dx.doi.org/10.1039/c8ra05637d.

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5

Zhu, Si Jun, Yuan Yuan Zhou, Ochi Takashi, and Gang Wu. "Preparation of Polytetrafluoroethylene Ultrafine Fiber Mats with Electrospinning Process." Materials Science Forum 675-677 (February 2011): 827–30. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.827.

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Polytetrafluoroethylene (PTFE) ultrafine fibers mats were prepared by electrospinning of an aqueous PTFE dispersion and a small amount of poly(vinyl alcohol) (PVA) and subsequent heat-treatment. The influence of dispersions composition on the morphology of fabricated PTFE ultrafine fiber mats was investigated. The fabricated mats were characterized by attenuated total reflection-Fourier transform infrared (ATR-FTIR) and koniology tester. The results show that the PVA/PTFE mass ratio of 1:5 was suitable for the PTFE fibers formation. All the PVA in the electrospun PVA/PTFE mats was removed at 3

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6

Wang, Ruiliu, Guangbiao Xu, and Yuechao He. "Structure and properties of polytetrafluoroethylene (PTFE) fibers." e-Polymers 17, no. 3 (2017): 215–20. http://dx.doi.org/10.1515/epoly-2016-0059.

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AbstractStructure and properties of polytetrafluoroethylene (PTFE) fibers were characterized thoroughly by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analyzing (TG) and water contact angle measurement. It was found that the longitudinal surface of the fiber was not smooth and was full of grooves. The cross sections of fibers were sheet-like and irregular. The infrared spectrum of PTFE fibers was the same as that of PTFE films except the 626 cm-l bands which were associated with the helix-revers

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7

Wang, Xiao Qun, Da Rong Chen, Jie Cai Han, and Shan Yi Du. "Crystallization behavior of polytetrafluoroethylene (PTFE)." Journal of Applied Polymer Science 83, no. 5 (2001): 990–96. http://dx.doi.org/10.1002/app.2279.

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8

Blanchet, T. A., and F. E. Kennedy. "Sliding wear mechanism of polytetrafluoroethylene (PTFE) and PTFE composites." Wear 153, no. 1 (1992): 229–43. http://dx.doi.org/10.1016/0043-1648(92)90271-9.

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9

Nagae, T., H. Tsuchida, S. K. Peng, K. Furukawa, and S. E. Wilson. "Composite Porosity of Expanded Polytetrafluoroethylene Vascular Prosthesis." Cardiovascular Surgery 3, no. 5 (1995): 479–84. http://dx.doi.org/10.1177/096721099500300507.

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Polytetrafluoroethylene (PTFE) prostheses were modified to produce two types of composite porosity PTFE grafts: type I - inner 60 μm/outer 20 μm and type II - inner 20 μm/outer 60 μm. These composite porosity PTFE designs were investigated for bleed through, graft healing and patency and compared with high porosity PTFE (60 μm) and standard PTFE (20 μm) grafts. The grafts were implanted into the carotid and femoral arteries of dogs and retrieved after 4, 12 and 18 weeks. Both composite porosity grafts showed significantly less bleed through than standard and high porosity grafts after reperfus

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10

Yamaguchi, Seiji, and Takeshi Yao. "Apatite Patterning by Using Electrophoretic Deposition." Key Engineering Materials 284-286 (April 2005): 271–76. http://dx.doi.org/10.4028/www.scientific.net/kem.284-286.271.

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Electrophoretic deposition (EPD) was applied to forming apatite pattern. A pattern of holes was formed on a polytetrafluoroethylene (PTFE) board and a porous PTFE film was superposed on the PTFE board. Wollastonite particles were deposited on the PTFE film by EPD and wollastonite pattern was obtained. Then apatite was induced at the wollastonite deposited region by soaking in a simulated body fluid.

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11

Mu, Liwen, Jiahua Zhu, Jingdeng Fan, et al. "Self-Lubricating Polytetrafluoroethylene/Polyimide Blends Reinforced with Zinc Oxide Nanoparticles." Journal of Nanomaterials 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/545307.

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ZnO nanoparticle reinforced polytetrafluoroethylene/polyimide (PTFE/PI) nanocomposites were prepared and their corresponding tribological and mechanical properties were studied in this work. The influences of ZnO loading, sliding load, and velocity on the tribological properties of ZnO/PTFE/PI nanocomposites were systematically investigated. Results reveal that nanocomposites reinforced with 3 wt% ZnO exhibit the optimal tribological and mechanical properties. Specifically, the wear loss decreased by 20% after incorporating 3 wt% ZnO compared to unfilled PTFE/PI. Meanwhile, the impact strength

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12

Yan, Fei, Cheng Ma, Qingtao Gong, et al. "Adsorption Behavior of Fluorocarbon Surfactants on Polytetrafluoroethylene Surface." Colloids and Interfaces 8, no. 6 (2024): 64. http://dx.doi.org/10.3390/colloids8060064.

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By using the sessile drop method, the wetting properties of nonionic fluorocarbon surfactants (FNS-1 and FNS-2) and anionic fluorocarbon surfactant (FAS) solutions on the surface of polytetrafluoroethylene (PTFE) were investigated. Meanwhile, the effects of surfactant concentration on the contact angle, adhesion tension, PTFE–liquid interfacial tension, and work of adhesion of the fluorocarbon surfactant with different structures were detected. The results demonstrate that the adsorption amount of the three fluorocarbon surfactants at the air–liquid interface is 1.5~2 times higher than their a

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13

Iqbal, Rabia, Deepti Bhandare, Myron St Louis, and Rupam Ruchi. "Think before you leap: cutaneous hypersensitivity to polytetrafluoroethylene arteriovenous graft masquerading as infection." BMJ Case Reports 12, no. 9 (2019): e230401. http://dx.doi.org/10.1136/bcr-2019-230401.

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Polytetrafluoroethylene (PTFE) graft is a synthetic graft commonly used in chronic haemodialysis patients. Expected complications of synthetic grafts include infection, thrombosis, oedema and pain. PTFE is a non-textile graft that is chemically inert, electronegative and hydrophobic. Due to their chemical properties, PTFE grafts have lower risks of these adversities. We present a patient with a rare case of cutaneous hypersensitivity to a PTFE graft.

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14

Chen, Wen Wen, Chang Lin Cao, Yi Zhang, Li Ren Xiao, Qing Rong Qian, and Qing Hua Chen. "The Structure and Properties of NBR / Recycled Polytetrafluoroethylene (R-PTFE) Composites." Advanced Materials Research 983 (June 2014): 152–55. http://dx.doi.org/10.4028/www.scientific.net/amr.983.152.

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The structure and properties of NBR and its composites coupled with different particle size of recycled polytetrafluoetylene (R-PTFE) are investigated. The results show that R-PTFE has a positive effect on NBR enhancing the curing properties of materials, mechanical properties, solvent resistance of NBR when the particle size of R-PTFE less than 200 mesh. However, when it is 200 mesh, R-PTFE is not easily dispersed in the NBR matrix, resulting in decreasing the properties of NBR/R-PTFE composites.

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15

Xu, Huan, Wangyong Jin, Feng Wang, et al. "Formation and characterization of polytetrafluoroethylene nanofiber membranes for high-efficiency fine particulate filtration." RSC Advances 9, no. 24 (2019): 13631–45. http://dx.doi.org/10.1039/c9ra01643k.

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16

Kang, Weimin, Fu Li, Yixia Zhao, Chunmei Qiao, Jingge Ju, and Bowen Cheng. "Fabrication of porous Fe2O3/PTFE nanofiber membranes and their application as a catalyst for dye degradation." RSC Advances 6, no. 39 (2016): 32646–52. http://dx.doi.org/10.1039/c5ra27879a.

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Novel porous polytetrafluoroethylene (PTFE) nanofiber membranes containing Fe<sub>2</sub>O<sub>3</sub>(Fe<sub>2</sub>O<sub>3</sub>/PTFE), used as a heterogeneous catalyst, were preparedviaa three-step method by electrospinning, immersion and calcination.

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17

Dzhanayeva, Zalina Nikolayevna, Kirill Vladimirovich Khripun, Yanina Stanislavovna Konenkova, and Vadim Petrovich Nikolaenko. "Tectonic keratoplasty using porous polytetrafluoroethylene (PTFE)." Ophthalmology journal 6, no. 4 (2013): 9–14. http://dx.doi.org/10.17816/ov201349-14.

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The prevalence of corneal ulcer amounts to 47,3% of all inflammatory eye diseases. A corneal ulcer course may be complicated by perforation, and, as its result, by eyeball loss. In the article, the result of porous polytetrafluoroethylene (PTFE) use for tectonic keratoplasty is presented. The assessment result of cellular activity in the polymer body is shown using scanning electron microscopy (SEM). Technical moments of implant fixation to the cornea are explained, in particular PTFE covering with native tissues and temporary blepharorraphy are crucial. The presented method may serve as a fir

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18

Chongzheng, Tang, and Kong Yikching. "Amorphous microcellular polytetrafluoroethylene (PTFE) foam film." Vacuum 42, no. 16 (1991): 1066. http://dx.doi.org/10.1016/0042-207x(91)91355-r.

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19

Grevstad, Hans Jacob, and Knut Norvald Leknes. "Epithelial adherence to polytetrafluoroethylene (PTFE) material." European Journal of Oral Sciences 100, no. 4 (1992): 236–39. http://dx.doi.org/10.1111/j.1600-0722.1992.tb01749.x.

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20

Ariawan, Alfonsius B., Sina Ebnesajjad, and Savvas G. Hatzikiriakos. "Properties of polytetrafluoroethylene (PTFE) paste extrudates." Polymer Engineering & Science 42, no. 6 (2002): 1247–59. http://dx.doi.org/10.1002/pen.11028.

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21

Li, J., and Y. F. Zhang. "The impact properties of a polyamide 6– polytetrafluoroethylene composite." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 1 (2009): 13–17. http://dx.doi.org/10.1243/09544062jmes1571.

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Polyamide 6 (PA6)-filled polytetrafluoroethylene (PTFE) at different compositions has been successfully prepared in a corotating twin screw extruder where PTFE acts as the polymer matrix and PA6 as the dispersed phase. The morphology and impact properties of these blends were investigated using a scanning electron microscope. The presence of PA6 particles dispersed in the PTFE continuous phase exhibited a coarse morphology. Increasing PA6 contents in the blend improved the impact properties at weak deformation. It was found that the interfacial adhesion played an important role in the creation

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22

Polykandriotis, Elias, Florian Ruppe, Miriam Niederkorn, et al. "Polytetrafluoroethylene (PTFE) suture vs fiberwire and polypropylene in flexor tendon repair." Archives of Orthopaedic and Trauma Surgery 141, no. 9 (2021): 1609–14. http://dx.doi.org/10.1007/s00402-021-03899-9.

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Abstract Background In this study, we evaluate the value of novel suture material based on monofilamentous-extruded polyfluoroethylene (PTFE) compared to polypropylene (PPL) and Fiberwire (FW). Materials and methods 60 flexor tendons were harvested from fresh cadaveric upper extremities. 4–0 sutures strands were used in the PPL, FW and PTFE group. Knotting properties and mechanical characteristics of the suture materials were evaluated. A 4-strand locked cruciate (Adelaide) or a 6-strand (M-Tang) suture technique was applied as core sutures for a tendon repair. Two-way ANOVA tests were perform

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23

Jiao, Ming Ming, Bing Yu, Hai Lin Cong, Shu Jing Yang, Shi Ming Huang, and Shao Peng Wang. "Preparation and Property of a Superhydrophobic Glass Sealant." Advanced Materials Research 669 (March 2013): 63–66. http://dx.doi.org/10.4028/www.scientific.net/amr.669.63.

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The recipe of silicone glass sealant was studied, and the influence of crosslinking agent, plasticiser and reinforcing agent on its property was investigated. After compositing the glass sealant with polytetrafluoroethylene (PTFE) nanoparticles, a novel superhydrophobic silicone/PTFE glass sealant was obtained with contact angle of water more than 150o, and the effect of PTFE nanoparticles on superhydrophobicity of the nanocomposites was researched.

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24

Mei, Shunqi, Oksana Ayurova, Undrakh Mishigdorzhiyn, et al. "Structure and Properties of Self-Reinforced Polytetrafluoroethylene-Based Materials." Polymers 17, no. 12 (2025): 1609. https://doi.org/10.3390/polym17121609.

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A promising direction in polymer material processing is the development of self-reinforced polymer composites (SRPMs), representing a relatively new group of composite materials. The self-reinforcement method allows for materials of one polymer to be combined with different molecular, supramolecular, and structural features. The high adhesive and mechanical properties of SRPMs are due to the formation of a homogeneous system with no inter-phase boundary. Moreover, self-reinforcement considers the possibility of using polymer waste to create high-strength composites, which reduces the environme

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25

Brownell, Matthew, and Arun K. Nair. "Deformation mechanisms of polytetrafluoroethylene at the nano- and microscales." Physical Chemistry Chemical Physics 21, no. 1 (2019): 490–503. http://dx.doi.org/10.1039/c8cp05111a.

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26

Akdogan, G., T. A. Stolarski, and S. Tobe. "Wear performance of polytetrafluoroethylene-metal coatings in rolling/sliding line contact." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 217, no. 2 (2003): 103–14. http://dx.doi.org/10.1243/13506500360603534.

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The study, presented in this paper, aims to shed some light on the effect of deposited polytetrafluorothylene (PTFE) on the tribological performance of Al bronze and Mo coatings in rolling/sliding contact conditions by using a two-disc machine. The experimental results revealed that both PTFE-Al bronze and PTFE-Mo coatings had outstanding wear and surface fatigue resistance. Although PTFE-Al bronze coatings had relatively better wear behaviour than PTFE-Mo coatings under both pure rolling and rolling/sliding conditions, both coatings had no significant surface damage after 1.2 × 106 load cycle

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27

Xie, Ting, Gang Chen, Yan Guo Yin, et al. "Effect of Thermal Conduction on Tribological Properties of Polytetrafluoroethylene Based Composites." Advanced Materials Research 150-151 (October 2010): 655–58. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.655.

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Due to the poor thermal conduction of polytetrafluoroethylene (PTFE), some fillers are often added into PTFE matrix to improve its thermal conduction and enhance its tribological performance. In our work, to increase their thermal conduction, the PTFE composites with different contents of copper particles were prepared. The friction and wear properties of the composites were tested. The effect of thermal conduction on tribological properties of the PTFE based composites was analyzed, and the wear mechanisms were also discussed. The results showed that with the increase of the thermal conductiv

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28

Vasilev, A. P., T. S. Struchkova, and A. A. Okhlopkova. "Effects of Complex Fillers on the Mechanical and Tribological Properties of Polytetrafluoroethylene Composites." Materials Science Forum 992 (May 2020): 739–44. http://dx.doi.org/10.4028/www.scientific.net/msf.992.739.

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This work is devoted to studying the impact of carbon fibers with vermiculite and ultrafine polytetrafluoroethylene on the structure and properties of polytetrafluoroethylene. The mechanical and tribological characteristics of composites based on PTFE was compared depending on the content of carbon fibers. The yield strength and compressive strength improvement with increase of contents carbon fibers of the PTFE was showed. The method of X-ray analysis showed that with by introducing of complex fillers in the PTFE leads to the increasing the degree of crystallinity. PTFE-based composites reinf

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29

Mlela, Masoud Kamoleka, He Xu, Feng Sun, Haihang Wang, and Gabriel Donald Madenge. "Material Analysis and Molecular Dynamics Simulation for Cavitation Erosion and Corrosion Suppression in Water Hydraulic Valves." Materials 13, no. 2 (2020): 453. http://dx.doi.org/10.3390/ma13020453.

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In the milestone of straggling to make water hydraulics more advantageous, the choice of coating polymer for water hydraulics valves plays an essential role in alleviating the impact of cavitation erosion and corrosion, and this is a critical task for designers. Fulfilling the appropriate selection, we conflicted properties that are vital for erosion and corrosion inhibitors, as well as the tribology in the sense of coefficient of friction. This article aimed to choose the best alternative polymer for coating on the selected substrate, that is, Cr2O3, Al2O3, Ti2O3. By applying PROMETHEE (Prefe

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30

Tobe, S., M. Yamane, and T. A. Stolarski. "Friction and wear of polytetrafluoroethylene reservoirs embedded into metallurgical coatings." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 219, no. 2 (2005): 107–15. http://dx.doi.org/10.1243/135065005x9781.

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Assessment of tribological performance of polytetrafluoroethylene (PTFE) reservoirs embedded into two metallurgical coatings [copper-aluminium (Cu-Al) alloy and molybdenum] and arranged in three different patterns was the main aim of studies reported in this paper. PTFE reservoirs were arranged in such a way that the load on the contact, at any given moment, was supported by both PTFE and hard coating. Two different contact configurations were used. Of the two coating materials used, the Cu-Al performed better in terms of friction force magnitude. Performance of the three different shapes of P

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31

Haddad Filho, Douglas, Deborah K. Zveibel, Nivaldo Alonso, and Rolf Gemperli. "Comparison between textured silicone implants and those bonded with expanded polytetrafluoroethylene in rats." Acta Cirurgica Brasileira 22, no. 3 (2007): 187–94. http://dx.doi.org/10.1590/s0102-86502007000300006.

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PURPOSE: Comparison of the inflammatory reaction promoted by textured silicone implants and that caused by the implant bonded with e-ptfe. METHODS: One-hundred and fifty rats were divided into three equal groups (control, silicone, and bonded e-ptfe). These groups were subdivided into five groups, according to the second operation, i.e., 7,30,60,90 and 180 days. Histology of the peri-implant tissue was analyzed by morphometry with blood count (neutrophilos, lymphocytes, macrophages, fibroblasts and capillaries). RESULTS: Comparison of subgroups 7,30,60,90, 180 days: - neutrophils: silicone: &g

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32

Tarasova, P. N., S. A. Sleptsova, S. Laukkanen, and A. A. Dyakonov. "SEALING MATERIALS BASED ON POLYTETRAFLUOROETHYLENE FOR AVIATION PRODUCTS." Aviation Materials and Technologies, no. 1 (2022): 51–64. http://dx.doi.org/10.18577/2713-0193-2022-0-1-51-64.

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The paper studies the effect of mechanically activated serpentine and magnesium spinel on the deformation-strength and tribotechnical characteristics and structure of polytetrafluoroethylene (PTFE). It has been determined that with the simultaneous introduction of fillers, an increase in wear resistance is observed up to 1125 times while maintaining and even slightly increasing the deformation and strength characteristics of the PTFE. It has been concluded that filler particles contribute to a change in the supramolecular structure of the PTFE, and also affect the formation of a protective sec

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33

Ayurova, Oksana, Vasiliy Kornopoltsev, Andrey Khagleev, et al. "Wear-Resistant Elastomeric Composites Based on Unvulcanized Rubber Compound and Recycled Polytetrafluoroethylene." Lubricants 12, no. 2 (2024): 29. http://dx.doi.org/10.3390/lubricants12020029.

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Advancements in industrial machinery and manufacturing equipment require more reliable and efficient polymer tribo-systems which operate in conditions associated with increasing machine speeds and a lack of cooling oil. The goal of the current research is to improve the tribological properties of elastomeric composites by adding a solid lubricant filler in the form of ultrafine polytetrafluoroethylene (PTFE) with the chemical formula [C2F4]n and recycled polytetrafluoroethylene (r-PTFE) powders. PTFE waste is recycled mechanically by abrasion. The elastomeric composites are prepared by mixing

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34

Niu, Yong Ping, Sa Li, Jun Kai Zhang, Li Hua Cai, and Yong Zhen Zhang. "Tribological Properties of PTFE Nanocomposites Filled with Alumina Nanoparticles." Advanced Materials Research 557-559 (July 2012): 534–37. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.534.

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Polytetrafluoroethylene (PTFE) nanocomposites filled with alumina nanoparticles were prepared by compression molding and follow-up sintering. The tribological behaviors of PTFE nanocomposites sliding against GCr15 steel were evaluated using ball-on-disk tribology test rig. The worn surfaces of the unfilled and filled PTFE nanocomposite were investigated using a scanning electron microscope (SEM). The wear behavior of the PTFE nanocomposites was explained in terms of the topography of worn surfaces. It was found that the addition of alumina nanoparticles was effective in enhancing the wear resi

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35

Mukhtar, N. Z. F., Mohamad Rusop, and Saifollah Abdullah. "A Study on Commercial Polytetrafluoroethylene as a High Potential Polymer." Advanced Materials Research 832 (November 2013): 543–46. http://dx.doi.org/10.4028/www.scientific.net/amr.832.543.

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PTFE is a polymer of the type of Teflon. This polymer is from fluoropolymer family and made from monomer tetrafluoroethylene by polymerization. PTFE have properties that make them very useful in many application such as high melting point, extremely low friction of coefficient, very good chemical resistance, maximum mechanical resistance, non reactive polymer and good insulation properties. Therefore, this paper will report the study on commercial PTFE as an excellent remarkable polymer. The characterization will take over to analysis this polymer, respectively via Field Emission Scanning Elec

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36

Desale, Digambardas Dnyandeo, and Harshad B. Pawar. "PTFE AS A JOURNAL BEARING MATERIAL." JournalNX - A Multidisciplinary Peer Reviewed Journal QIPCEI2K18 (May 1, 2018): 193–95. https://doi.org/10.5281/zenodo.1411847.

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This study investigates the comparative analysis of polytetrafluoroethylene composites that how properties of PTFE can be improved and it is logical to expect that its load- carrying ability and its wear resistance can be improved by the addition of suitable fillers. How the use of both soft and hard phases in a polymer matrix improving the tribological properties of the PTFE is presented. Friction and wear tests of PTFE composite against AISI SS 304 stainless steel are carried out under dry conditions using a pin-on-disc arrangement. PTFE composites includes graphite filled PTFE, bronze fille

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37

Niu, Yong Ping, Xiang Yan Li, Jun Kai Zhang, Ming Han, and Yong Zhen Zhang. "Tribological Behavior of PTFE Nanocomposites Reinforced with PBA Grafted Alumina Nanoparticles." Applied Mechanics and Materials 184-185 (June 2012): 1380–83. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.1380.

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Polybutyl acrylate (PBA) grafted alumina nanoparticles were synthesized. Polytetrafluoroethylene (PTFE) nanocomposites reinforced with PBA grafted nanoparticles were prepared by compression molding. The effects of PBA grafted nanoparticles on the tribological behavior of the PTFE nanocomposites were investigated on a tribometer. The abrasion mechanisms of the PTFE nanocomposites were investigated by scanning electron microscopy (SEM) of the abraded surfaces. The results show that the addition of PBA grafted nanoparticles maintains low friction coefficient and improves the wear resistance of th

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38

Zhao, Benbo, Shixiong Sun, Yunjun Luo, and Yuan Cheng. "Fabrication of Polytetrafluoroethylene Coated Micron Aluminium with Enhanced Oxidation." Materials 13, no. 15 (2020): 3384. http://dx.doi.org/10.3390/ma13153384.

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Aluminium (Al) powders of micron size are widely applied to energetic materials as a high energy fuel. However, its energy conversion efficiency is generally low due to low oxidation activity. In this paper, a polytetrafluoroethylene (PTFE) coating layer with both protection and activation action was successfully introduced onto the surface of Al via adsorption and following heat treatment. The preparation conditions were optimized and the thermal activity of this core-shell composite material was studied. The potential enhancement mechanism for Al oxidation was proposed. The results showed th

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39

Cheng, Zhi-Lin, Xing-Yu Chang, Zan Liu, and Dun-Zhong Qin. "Surface-modified halloysite nanotubes as fillers applied in reinforcing the performance of polytetrafluoroethylene." Clay Minerals 53, no. 4 (2018): 643–56. http://dx.doi.org/10.1180/clm.2018.48.

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ABSTRACTIn order to improve the dispersibility of halloysite nanotubes (HNTs) in polytetrafluoroethylene (PTFE), the modification of HNT surfaces was studied with three types of modifiers (polymethyl methacrylate [PMMA], sodium dodecyl sulfate [SDS] and carboxylic acid). The modified HNTs were characterized by Fourier-transform infrared (FTIR) spectrometry, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and contact angle measurements. The HNTs were used to reinforce the mechanical properties of PTFE. The mechanical results indicated that the tensile strength of the

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Wang, Meng, Nan Zhang, Yingjie Tang, et al. "Single-electrode triboelectric nanogenerators based on sponge-like porous PTFE thin films for mechanical energy harvesting and self-powered electronics." Journal of Materials Chemistry A 5, no. 24 (2017): 12252–57. http://dx.doi.org/10.1039/c7ta02680c.

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Hu, Si Qian, Hai Ping Wang, Yu Min Zhang, and Xin Zou. "Polytetrafluoroethylene Mesh for Many Types of Blueprinting Machine: Preparation and Characterization." Advanced Materials Research 317-319 (August 2011): 48–52. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.48.

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Adopting domestic polytetrafluoroethylene (PTFE) turning plate as materials, a new isosceles triangle macroporous mesh was designed. The correspond mould and the special fixtures for continuous punching of ultra-thin plastic sheet were successfully developed. The PTFE mesh was manufactured through computer numerically controlled (CNC) punch. In terms of electronic universal testing machines and microcomputer differential thermal balance, mechanical properties and thermostability of the PTFE mesh were studied. The results indicated that the tensile strength of PTFE mesh is 11.98 MPa which is gr

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Mizobe, Koshiro, Edson Costa Santos, Takashi Honda, Hitonobu Koike, Katsuyuki Kida, and Yuji Kashima. "Observation of Wear in PEEK Race - PTFE Retainer Hybrid Polymer Bearings under Dry Contact." Advanced Materials Research 457-458 (January 2012): 557–62. http://dx.doi.org/10.4028/www.scientific.net/amr.457-458.557.

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In order to establish an optimal combination of materials used for polymer thrust bearings, two types of components (polyetheretherketone (PEEK) races - polytetrafluoroethylene (PTFE) retainer and PEEK races – PEEK retainer) were tested by rolling contact fatigue. Their wear properties were investigated and it was concluded that using a PTFE retainer, the wear loss was improved due to PTFE wear debris attaching to the wear track and acting as a lubricant.

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Zhu, Shang, Yukang Xu, Chen Huang, and Xiangyu Jin. "Triboelectric Effect of Polytetrafluoroethylene Fibers to Improve the Filtration Performance of Air-Purified Materials." Journal of Engineered Fibers and Fabrics 13, no. 1 (2018): 155892501801300. http://dx.doi.org/10.1177/155892501801300108.

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The effect of triboelectric behavior of polytetrafluoroethylene (PTFE) on the filtration performance of common air-purified filters was studied. Variations of triboelectric charge density on PTFE films were analyzed by four typical parameters (cycle, applied load, contact area and velocity). The results demonstrated that the addition of PTFE fibers could significantly improve the filtration property of air-purified materials, owning to the accumulation of triboelectric static charge on the fibers.

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Vasilev, A. P., T. S. Struchkova, and A. G. Alekseev. "Development of Antifriction Materials Based on Polytetrafluoroethylene with Carbon Fibers and Tungsten Disulfide." Materials Science Forum 992 (May 2020): 745–50. http://dx.doi.org/10.4028/www.scientific.net/msf.992.745.

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This paper presents the results from the investigation of effect the carbon fibers with tungsten disulfide on the mechanical and tribological properties of PTFE. Is carried out a comparison of mechanical and tribological properties of polymer composites PTFE-based with carbon fibers and PTFE with complex filler (carbon fibers with tungsten disulfide). It is shown that at a content of 8 wt.% CF+1 wt.% WS2 in PTFE, wear resistance increases significantly while maintaining the tensile strength, relative elongation at break and low coefficient of friction at the level of initial PTFE. The results

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Yang, Huaiyu, Cai L. Song, Ying X. S. Lim, Wenqian Chen, and Jerry Y. Y. Heng. "Selective crystallisation of carbamazepine polymorphs on surfaces with differing properties." CrystEngComm 19, no. 44 (2017): 6573–78. http://dx.doi.org/10.1039/c7ce01317e.

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Nemati, N., M. Emamy, S. Yau, J. K. Kim, and D. E. Kim. "High temperature friction and wear properties of graphene oxide/polytetrafluoroethylene composite coatings deposited on stainless steel." RSC Advances 6, no. 7 (2016): 5977–87. http://dx.doi.org/10.1039/c5ra23509j.

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Xu, Mingkun, Tingmei Wang, Qihua Wang, Xinrui Zhang, Liming Tao, and Song Li. "Mechanical and tribological properties of polytetrafluoroethylene reinforced by nano-ZrO₂: Molecular dynamic simulation." High Performance Polymers 34, no. 4 (2022): 397–405. http://dx.doi.org/10.1177/09540083211072740.

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The mechanism of enhancing the mechanical and tribological properties of polytetrafluoroethylene (PTFE) via the addition of nano-ZrO2 was investigated by virtue of molecular dynamic (MD) simulation from an atomic level. The MD was used to explore stretch and break of molecular chains for understanding the inherent mechanism of nanocomposites. The results found that elastic modulus of PTFE and PTFE/ZrO2 were 1.42 GPa and 6.43 GPa, respectively. The average friction coefficients of PTFE and PTFE/ZrO2 were 0.168 and 0.113, respectively. Compared to PTFE, the friction coefficient of PTFE/ZrO2 decr

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Zhao, Xinni, Shuangxi Li, Dengyu Liu, and Lele Huang. "Material Optimization Method for a Spring-Energized Seal Based on Wear Analysis." Lubricants 12, no. 8 (2024): 288. http://dx.doi.org/10.3390/lubricants12080288.

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Spring-energized seals demonstrate good sealing performance over a wide range of pressures and temperatures and can compensate for installation eccentricity, high-temperature aging, etc. However, as a contact seal, its polytetrafluoroethylene (PTFE) jacket material is easily worn during the rotation of the end face, which leads to a decline in sealing performance and, ultimately, seal failure. Based on the Archard wear model, a performance prediction model of the spring-energized seal was established by combining tests and numerical analyses. In order to improve the tribological performance of

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Liu, Can, Yi-Yang Dong, Yu-Yang Fan, et al. "Research on the Impact Initiation Behavior of PTFE/Al/Ni2O3 Reactive Materials." Polymers 14, no. 21 (2022): 4629. http://dx.doi.org/10.3390/polym14214629.

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PTFE/Al reactive material is an energetic material that releases energy under impact conditions, resulting in a wide range of application prospects. In order to improve its damage ability—considering the higher heat of the reaction per unit mass when Ni2O3 is involved in the aluminothermic reaction—we designed and studied PTFE/Al/Ni2O3, a reaction material based on polytetrafluoroethylene (PTFE). We also designed two other kinds (PTFE/Al, PTFE/Al/CuO) for comparative study, with the mass fraction of the metal oxides added at 10%, 20%, and 30%, respectively. The quasi-static compression propert

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Zhang, Xiang, and Fan Zhang. "Application of a Novel P-N Intumescent Flame Retardant to Polypropylene." Advanced Materials Research 550-553 (July 2012): 724–27. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.724.

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In this work, a flame retardant system consisting of P-N intumescent flame retardant (IFR), melamine phosphate, ammonium polyphosphate (APP) and polytetrafluoroethylene (PTFE) was applied to polypropylene (PP). The IFR/APP/PTFE flame-retardant system showed significant synergistic effect, and the PP/IFR/APP/PTFE can reach a LOI value of 30.1% and UL-94 V-0 with only 24wt% flame-retardant (APP: 6wt%, IFR: 17.5wt%, PTFE: 0.5wt%). By using FTIR, SEM and XPS, the burning process of flame-retardant PP and the components of residual char were analyzed, and the flame retardant mechanism of PP/APP/IFR

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