The effect of annealing of milled carbon fibers on the mechanical and tribological properties of solid‐lubricant thermoplastic polyimide‐based composites

2020 ◽  
Vol 60 (11) ◽  
pp. 2735-2748
Author(s):  
S.V. Panin ◽  
J. Luo ◽  
V.O. Alexenko ◽  
D.G. Buslovich ◽  
L.A. Kornienko ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Tribological Properties ◽  
Solid Lubricant ◽  
Mechanical And Tribological Properties

Mechanical and tribological properties of solid lubricant composites based on thermoplastic polyimide loaded with PTFE and surface modified carbon fibers

2020 ◽  
pp. 394-400
Author(s):  
S.V. Panin ◽  
Lo Jiangkun ◽  
D.G. Buslovich ◽  
V.O. Aleksenko ◽  
L.A. Kornienko
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Tribological Properties ◽  
Silane Coupling Agent ◽  
Solid Lubricant ◽  
Physical And Mechanical Properties ◽  
Mechanical And Tribological Properties ◽  
Micron Size ◽  
Silane Coupling ◽  
Surface Modified

The mechanical and tribological properties of thermoplastic polyimide based composites loaded with polytetrafl uoroethylene and milled carbon fibers, annealed and functionalized with a KH550 silane-coupling agent were studied. It has been revealed that, compared with neat PI, the composite with annealed carbon fibers and PTFE particles possessed the highest wear resistance. Reinforcing carbon fibers of hundreds micron size increase the elastic modulus by 2 times; while all other physical and mechanical properties remain at the level of unfilled PI.

scholarly journals Growth of ultra-dense MoS2 nanosheets on carbon fibers to improve the mechanical and tribological properties of polyimide composites

Friction ◽  
2020 ◽  
Author(s):  
Jin Yang ◽  
Qingfeng Xiao ◽  
Zhe Lin ◽  
Yong Li ◽  
Xiaohua Jia ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Carbon Fibers ◽  
Tribological Properties ◽  
Transition Layer ◽  
Interface Bonding ◽  
Mos2 Nanosheets ◽  
Mechanical And Tribological Properties ◽  
Polyimide Composites ◽  
Reinforcing Effects ◽  
Absorption Sites

AbstractTo enhance the interface bonding of polyimide (PI)/carbon fiber (CF) composites, CFs were functionalized by introducing a polydopamine (PDA) transition layer, whose active groups provide absorption sites for the growth of molybdenum disulfide (MoS2) nanosheets and improve the bonding strength with PI. Uniform and dense MoS2 nanosheets with thicknesses of 30–40 nm on the surface of the PDA@CF were obtained via a subsequent hydrothermal method. As a result, the interface between the CF and the PI matrix becomes more compact with the help of the PDA transition layer and MoS2 nanosheets. This is beneficial in forming PI/CF-MoS2 composites with better thermal stability, higher tensile strength, and enhanced tribological properties. The lubricating and reinforcing effects of the hybrid CF-MoS2 in the PI composite are discussed in detail. The tensile strength of the PI/CF-MoS2 composite increases by 43%, and the friction coefficient and the wear rate reduce by 57% and 77%, respectively, compared to those of the pure PI. These values are higher than those of the PI/CF composites without MoS2 nanosheets. These results indicate that the CF-MoS2 hybrid material can be used as an additive to improve the mechanical and tribological properties of polymers.

Thermal, mechanical, and tribological properties of short carbon fibers/PEEK composites

2017 ◽  
Vol 30 (6) ◽  
pp. 657-666 ◽  
Author(s):  
Fangfang Li ◽  
Ying Hu ◽  
Xiaochen Hou ◽  
Xiyu Hu ◽  
Dong Jiang
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers ◽  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
Lower Viscosity ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
The Coefficient Of Friction ◽  
Worn Surface ◽  
Short Carbon

In this work, the effect of thermal, mechanical, and tribological properties of the blending system of different contents of short carbon fibers (SCFs) on different-viscosity poly-ether-ether-ketone (PEEK) was reported. The composites were manufactured using injection molding technique. Mechanical and tribological properties were measured by the tensile strength, the flexural strength, the coefficient of friction, and the wear rate. The results showed that the wear resistance and mechanical properties of the PEEK with the lower viscosity appeared on a more outstanding level, and experimental results showed that PEEK composites with added 10 wt% SCFs were optimal about the tribological behaviors and mechanical properties of the composites. Furthermore, based on scanning electron microscope inspections, the situation of the friction and worn surface of the material was explained.

Development of Antifriction Materials Based on Polytetrafluoroethylene with Carbon Fibers and Tungsten Disulfide

2020 ◽  
Vol 992 ◽  
pp. 745-750
Author(s):  
A.P. Vasilev ◽  
T.S. Struchkova ◽  
A.G. Alekseev
Keyword(s):  
Wear Resistance ◽  
Polymer Composites ◽  
Carbon Fibers ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Relative Elongation ◽  
Tungsten Disulfide ◽  
Degree Of Crystallinity ◽  
Mechanical And Tribological Properties ◽  
The Coefficient Of Friction

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 of X-ray analysis and investigation of SEM supramolecular structure and friction surfaces of PTFE and polymer composites are presented. It is shown that the degree of crystallinity of polymer composites increases in comparison with the initial PTFE. The images of scanning electron microscope reveal that particles of tungsten disulfide concentrating on the friction surface is likely responsible to a reduction in the coefficient of friction and increase the wear resistance of PTFE-based polymer composites with complex fillers.

Mechanical and tribological properties of sputter deposited nanostructured Cr–WS2 solid lubricant coatings

2010 ◽  
Vol 205 (7) ◽  
pp. 1937-1946 ◽  
Author(s):  
B. Deepthi ◽  
Harish C. Barshilia ◽  
K.S. Rajam ◽  
Manohar S. Konchady ◽  
Devdas M. Pai ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Solid Lubricant ◽  
Mechanical And Tribological Properties ◽  
Sputter Deposited

Development of Wear-Resistant Materials Based on Polytetrafluoroethylene and Carbon Fibers of UVIS-AK-P Brand

2019 ◽  
Vol 945 ◽  
pp. 327-332 ◽  
Author(s):  
M.A. Markova ◽  
P.N. Petrova
Keyword(s):  
Carbon Fibers ◽  
Polymer Matrix ◽  
Tribological Properties ◽  
Ultrasonic Treatment ◽  
Energy Deposition ◽  
Planetary Mill ◽  
Mechanochemical Processing ◽  
Ultrasonic Action ◽  
Mechanical And Tribological Properties ◽  
Tribotechnical Properties

The present paper considers the influence of various technological approaches, based on the application of joint mechanochemical processing of composite components and ultrasonic action, on the performance of composites based on PTFE and discrete carbon fibers of UVIS-AK-P brand. It is established that the use of a certain method of energy deposition on the composite components for the complex enhancement of physical-mechanical and tribological properties depends on the concentration of carbon fibers (CF) in polymer matrix. As a result of the joint mechanoactivation treatment of the components in the planetary mill for 2 minutes, an improvement in physical-mechanical and tribotechnical properties of PTFE with CF concentration of 5 wt.% is observed. An improvement at concentration of 3 wt.% of CF is detected during ultrasonic treatment of PCM components.

Structure, mechanical and tribological properties of Mo-S-N solid lubricant coatings

2019 ◽  
Vol 486 ◽  
pp. 1-14 ◽  
Author(s):  
Tomáš Hudec ◽  
Marián Mikula ◽  
Leonid Satrapinskyy ◽  
Tomáš Roch ◽  
Martin Truchlý ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Solid Lubricant ◽  
Mechanical And Tribological Properties

scholarly journals Effect of Carbon Fiber Addition on Ceramic Reinforced Phenolic Resin Based Friction Composites

2010 ◽  
Vol 13 (1-2) ◽  
pp. 49
Author(s):  
L.M. Manocha ◽  
Guddu Prasad ◽  
S. Manocha
Keyword(s):  
Friction Coefficient ◽  
Carbon Fibers ◽  
Tribological Properties ◽  
Phenolic Resin ◽  
Inert Atmosphere ◽  
Lower Amount ◽  
Linear Speed ◽  
Mechanical And Tribological Properties ◽  
Micron Size ◽  
Pin On Disc

Carbon fibers have been used as additional reinforcing fibers to improve the mechanical and tribological properties of phenolic resin-based ceramic-carbon composites. The composites comprising ceramic particulates such as Silicon carbide, Boron carbide of 1-30 micron size as reinforcement and phenolic resin as matrix carbon precursor were prepared by compaction method followed by carbonization to 1000 °C in inert atmosphere. Experimental results indicate that carbonization results in decrease in thickness and weight, the amount of reduction increasing with addition of carbon fibers results in compact high density composites. Composites comprising of 10 wt. % fibers exhibited maximum hardness, compressive strength and density after  carbonization. Tribological properties of the composites were evaluated against Cr6 ball using a pin-on-disc Tribometer with different linear speed, sliding distance and load conditions. It was found that the composites filled with lower amount of carbon fibers showed relatively higher friction coefficient value. Also, it was noted that friction coefficient increases with increase in the applied load (1N, 2N and 5N) and linear speed.

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