Academic literature on the topic 'Self-lubricating plastics'

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Journal articles on the topic "Self-lubricating plastics"

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Shiao, Shin Jen, Wei Shung Fu, Chin Lin Tuo, and Un I. Cheng. "Polymer-based self-lubricating material." Journal of Applied Polymer Science 80, no. 9 (2001): 1514–19. http://dx.doi.org/10.1002/app.1242.

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Polcar, Tomas, Manuel Evaristo, and Albano Cavaleiro. "Self-Lubricating W-S-C Nanocomposite Coatings." Plasma Processes and Polymers 6, no. 6-7 (2009): 417–24. http://dx.doi.org/10.1002/ppap.200930005.

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Pohmer, K. "Oil Bleeding Behaviour of Self-Lubricating Liquid Silicone Rubbers." International Polymer Science and Technology 28, no. 2 (2001): 6–8. http://dx.doi.org/10.1177/0307174x0102800202.

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The term liquid silicone rubber (LSR) covers a whole range of two-pack, heat-curing products, which may be processed using liquid injection moulding (LIM), a technique similar to thermoplastic injection moulding. Although this product group only accounts for about one thousandth of the world rubber market (corresponding to approximately 18 000 t/a) and is therefore a speciality rubber (ref. 1), due to their excellent properties, such as thermal stability, low-temperature flexibility, constantly good mechanical properties over a wide temperature range and good physiological compatibility to name but a few, products made of LSR are used in a wide variety of applications in many different fields. The most important fields of application include household appliances and the food industry, electronics and electrical engineering, sports and leisure activities and the automotive and aerospace industries (ref. 2). As a result of their low-temperature flexibility and heat stability, silicone rubbers are used for numerous applications in the automotive sector. Examples include spark-plug socket jackets, radiator seals, exhaust mountings, O-rings, seals and membranes. Nowadays, it is standard practice to use weather packs made of special silicone rubbers to which has been added a silicone oil incompatible with rubber and which exudes slowly after the product has cured for sealing cable connectors for wiring harnesses.
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Yu, Mingming, Min Zhang, Lin Fang, et al. "Wear failure mechanism analysis of self-lubricating fabric composites at high temperature." Journal of Industrial Textiles 52 (August 2022): 152808372211485. http://dx.doi.org/10.1177/15280837221148500.

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The friction and wear properties of self-lubricating fabric composites were closely related to fiber properties. In this paper, polyimide (PI), polyetheretherketone (PEEK), polyisophthalamide (PMIA) and cyclic aramid (Aramid III) fibers were selected as reinforcing fibers to compare and investigate the friction and wear properties of self-lubricating fabric composites at high temperature. The tribological behavior of self-lubricating fabric composites was evaluated by ball-on-disk friction test. The wear mechanism was investigated by scanning electron microscope and mechanical test. As a result, the composite with PI as warp and weft reinforcing fiber has outstanding wear resistance because of the higher modulus of PI fiber. Its wear rate is 1.29 × 10−8 mm3/(N·mm). It shows that the stronger the rigidity of the reinforcing fiber at high temperature, the better the wear resistance of the composite. However, the friction coefficient of composites with PI as weft reinforcing fibers is about 0.8, which is much higher than that of composites with PMIA, PEEK and Aramid III as weft reinforcing fibers. Their friction coefficients are about 0.1. In addition, the self-lubricating fabric composites with different warp and weft reinforcing fibers were prepared as self-lubricating joint bearing liners to evaluate bearing applications.
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Серебрянский, Aleksey Serebryanskiy, Абрамов, Vitaliy Abramov, Канищев, and Denis Kanishchev. "The methodology and results of studies of friction temperature in hinges of forestry manipulators." Forestry Engineering Journal 4, no. 1 (2014): 189–93. http://dx.doi.org/10.12737/3368.

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Scope of manipulator technological equipment of harvesting machines and joints within their structure is defined. It was found that the friction surfaces of the parts of hinged connections are at increased wear due to imperfect selection of lubricants and construction materials. We offered to use self-lubricating antifriction plastics as anti-friction material in the joints of the manipulators. The durability of such plastics is significantly affected by the temperature of friction. The results show that the experimental values of temperature are slightly higher than the theoretical ones.
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Mu, Bo, Xin Li, Baoping Yang, et al. "Microstructure and tribological properties of epoxy composites modified by methyl silicone oil-loaded microcapsules and/or reinforced with potassium hexatitanate whiskers." High Performance Polymers 32, no. 3 (2019): 334–43. http://dx.doi.org/10.1177/0954008319862315.

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Self-lubricating functional microcapsules using melamine-formaldehyde resin encapsulating methyl silicone oil as core materials were synthesized by in situ polymerization method. And they are further adopted as antifriction additive to improve the tribological properties of binary and ternary epoxy (EP) composites, which were fabricated by incorporating microcapsules and the potassium hexatitanate whiskers (PTWs) into the EP matrix. The tribological behaviors of the as-synthesized EP composites have been evaluated by means of a block-on-ring high-speed wear tester. The results demonstrated that the friction coefficient and wear rate of EP /microcapsules binary composites decreased with the increase of microcapsule concentration due to the self-lubricating effect of the core material. For the EP /microcapsules/PTWs ternary composites, not only the mechanical properties and thermal stability PTWs were improved, but also the friction reduction and antiwear effect of the ternary composite are further enhanced due to the synergistic effect of PTWs and microcapsules.
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Серебрянский, Aleksey Serebryanskiy, Богатырева, and Zhanna Bogatyreva. "Metrological support and some results of pairs of cylindrical friction studies." Forestry Engineering Journal 6, no. 3 (2016): 177–83. http://dx.doi.org/10.12737/21696.

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Proposed metrological support of the research of cylindrical pairs on friction and wear al-lows obtaining reliable data about real wear processes. Analysis of the types of wear and pre-sented studies results of specific linear wear of friction pairs with self-lubricating anti-friction plastics showed that an increase in the sliding speed and load - linear wear is reduced. The analy-sis on the influence of the static forces of friction coefficient shows that with load and sliding velocity increasing friction coefficient decreases in all the three cases
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Quintelier, J., P. Samyn, L. De Doncker, et al. "Self-lubricating and self-protecting properties of polymer composites for wear and friction applications." Polymer Composites 30, no. 7 (2009): 932–40. http://dx.doi.org/10.1002/pc.20637.

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Ni, Ming, Shilong Wang, Wandong Li, and Weigang Huang. "A novel self-lubricating Ni-P-AlN-WS2 nanocomposite coating." Materials Research Express 6, no. 11 (2019): 116413. http://dx.doi.org/10.1088/2053-1591/ab4643.

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Zhou, Liming, Ji Xiong, Zhixing Guo, and Junliu Ye. "Design and preparation of gradient graphite/cermets self-lubricating composites." Journal of Materials Science & Technology 34, no. 8 (2018): 1378–86. http://dx.doi.org/10.1016/j.jmst.2017.09.018.

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Book chapters on the topic "Self-lubricating plastics"

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"Front Matter." In Effect of Surface Coatings and Treatments on Wear. ASTM International100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, 1996. http://dx.doi.org/10.1520/stp16097s.

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The only publication of its kind to feature the latest research on hard coating tribological behavior. In addition to a comprehensive overview of surface treatment and coating processes, as well as numerous wear processes, this unique volume presents cutting-edge information on: • Self-lubricating ceramic coatings • The impact of laser treatment on coating structure and hardness • Three variations of hard coating fretting results • Laboratory models for fretting testing • The use of thermally stable compounds as high temperature ceramic lubricants • Efficient methods for handling the effect of hard coatings on light alloys • The elastic, plastic and cracking properties of various plasma sprayed coatings • The preparation of a high temperature synthesis process coating technique.
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Conference papers on the topic "Self-lubricating plastics"

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Podgornik, Bojan, Barbara Šetina-Batič, and Manel Rodriguez Ripoll. "Tribological Performance of Ni-Based Self-Lubricating Claddings for High Temperature Forming of Lightweight Alloys." In IFHTSE 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.ifhtse2024p0029.

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Abstract The aim of the present research work was to investigate tribological performance and potential of Ni-based self-lubricating claddings for high temperature forming of lightweight alloys. Laser claddings included in this investigation were based on Ni-matrix with the incorporation of 5 wt% silver and 10 wt% MoS2 as solid lubricant precursors. Tribological evaluation and testing was performed by Load- Scanner to simulate hot forming process and results compared to high performance hot work tool steel. To simulate hot forming process of forging, wire drawing and extrusion, tests were done at room and elevated temperatures (150°C and 300°C) against typical light-weight alloys, including AISI 316L stainless steel, 6xxx series Al alloy and Ti6Al4V Ti alloy and results evaluated in terms of coefficient of friction vs. load, critical loads for galling initiation and volume of adhered work material. Results show that self-lubricated claddings with incorporated MoS2 and Ag as solid lubricants in general provide lower and more stable friction as well as improved galling resistance in high temperature forming of lightweight alloys. Positive effect of self-lubricating claddings intensifies with forming temperature, degree of plastic deformation and work material tendency to galling.
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Wang, Yuanyuan, and Elon J. Terrell. "Influence of Coating Thickness and Substrate Elasticity on the Tribological Performance of PEEK Coatings." In ASME/STLE 2012 International Joint Tribology Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ijtc2012-61190.

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When a material is subjected to repeated sliding contact, a surface fatigue and crack nucleation may occur on its surface. This damage weakens the material and can lead to debris formation. In many practical engineering assemblies, a thin PEEK (poly-ether-ether-ketone) coating is applied to reduce the damage, since PEEK exhibits wear resistance, corrosion resistance self-lubricating capacity and is lightweight. However, little is known about the effect of coating thickness on the plastic deformation, residual stresses and energy dissipation of PEEK when placed under sliding load. Moreover, the effect of substrate rigidity on coating stresses and deformation under sliding load are also under-researched. Having such knowledge is of significant importance in order to reduce damage of engineering parts and extend their lifetime. In this study, the effects of PEEK coating thickness and substrate elasticity were analyzed using a 3D ball-on-flat finite element model as well as experimental analysis using a linear reciprocating tribometer. The experimental tests were performed with samples that incorporated PEEK coatings of various thicknesses on alumina and steel substrates. It was found that under a constant normal load, stresses, strain and energy dissipation were sensitive to both substrate material and coating thickness. It is shown from both simulation and experiment, the optimum combination, within the range the experiments were conducted, for minimizing residual stress and possible fatigue damage was an alumina substrate with 35μm PEEK coating thickness.
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Lu, Kevin, Emily E. Brodsky, and H. Pirouz Kavehpour. "Triological Aspects and Fluidity of Dense Granular Flow." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80670.

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A key difficulty in describing the fluid-like behavior of granular materials is the transitional regime between the fully dynamic regime, i.e. the grain-inertial regime, to a quasi-static one. In the present investigation, we aim to establish a constitutive relation between stress and strain rate for a granular layer over a range of deformation rates within the transition/mixed regime. Our objective is to understand the relationship between granular flow and tribological-related issues, such as friction and stress behaviors, in terms of dependences on packing density, shear rate, and grain size. For the experimental setup, we utilize a Tribo-Rheometer to infer shear stress directly from the applied torque through steps of constant velocities. The configuration is a torsional-plane-shear geometry between two plates and the granular layer is confined laterally by a self-lubricating Teflon cylindrical sleeve. To analyze granular motion, we consider the powder layer as a compressible, frictional, athermal, and elasto-plastic material with solid, fluid, and gas-like properties. The granular flow regimes, defined by the dominant mode of interaction, are then analyzed as a function of different dimensionless parameters to illustrate the process that is controlling the tribological behavior. We find that shear stress and normal stress both decrease with increasing shear rate within the transition regime between the two limiting regimes. Also, the granular flow up to the grain-inertial regime shows a Coulomb-like friction behavior with no correlation to shear rate. However, the granular sample displays a quadratic rate-dependence of friction coefficient leading into and within the grain-inertial regime. A decrease in grain-size results in a dramatic increase in friction at the boundary.
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