Friction and Wear of Potassium Titanate Whisker Filled Carbon Fabric/Phenolic Polymer Composites

2015 ◽  
Vol 137 (1) ◽  
Author(s):  
Xinrui Zhang ◽  
Xianqiang Pei ◽  
Qihua Wang ◽  
Tingmei Wang
Keyword(s):  
Wear Rate ◽  
Friction And Wear ◽  
Dip Coating ◽  
Hot Press ◽  
Carbon Fabric ◽  
Potassium Titanate ◽  
Transfer Films ◽  
Fabric Composites ◽  
Phenolic Polymer ◽  
Press Molding

Carbon fabric/phenolic composites modified with potassium titanate whisker (PTW) were prepared by a dip-coating and hot-press molding technique, and the tribological properties of the resulting composites were investigated systematically using a ring-on-block arrangement under different sliding conditions. Experimental results showed that the optimal PTW significantly decreased the wear-rate. The worn surfaces of the composites and the transfer film formed on the counterpart steel ring were examined by scanning electron microscopy (SEM) to reveal the wear mechanisms. The transfer films formed on the counterpart surfaces made contributions to the improvement of the tribological behavior of the carbon fabric composites. The friction and wear of the filled carbon fabric composites was significantly dependent on the sliding conditions. It is observed that the wear-rate increased with increasing applied load and sliding speeds.

Tribological properties of PAANa/UHMWPE composite materials in seawater lubrication

2019 ◽  
Vol 39 (10) ◽  
pp. 874-882 ◽  
Author(s):  
Tian Yang ◽  
Yongliang Jin ◽  
Haitao Duan ◽  
Jiesong Tu ◽  
Dan Jia ◽  
...  
Keyword(s):  
Tribological Properties ◽  
High Performance ◽  
Friction And Wear ◽  
Surface Hardness ◽  
Hot Press ◽  
Uhmwpe Composites ◽  
Resistant Composite Material ◽  
Ultra High Molecular Weight ◽  
Press Molding ◽  
Uhmwpe Composite

Abstract To prepare a high-performance anti-friction and wear-resistant composite material for friction sub-components in marine equipment, a modification was made by adding different amounts sodium polyacrylate (PAANa) to ultra-high molecular weight polyethylene (UHMWPE). PAANa/UHMWPE-blended powders were prepared at individual weight ratios of 0/100, 3/97, 5/95, 8/92, 13/87, and 18/82 with hot-press molding. In seawater, experiments of PAANa/UHMWPE composites sliding against GCr15 have been conducted with a ball-on-disk configuration in this study. The results show the surface hardness of composites was almost the same with the increase in PAANa proportion, however, the friction coefficient and wear scars of PAANa/UHMWPE composites/GCr15 sliding pairs firstly decrease and then increase. Scanning electron microscopy (SEM) results show that wear mechanism of the composites is mainly plastic deformation and spalling. The composites with PAANa content of 3% and 5% achieves better tribological properties than the pure UHMWPE material.

Effect of MoS2 on the tribological properties of carbon fabric composites under wet conditions

2017 ◽  
Vol 232 (2) ◽  
pp. 126-135 ◽  
Author(s):  
Lehua Qi ◽  
Guangzhen Pan ◽  
Yewei Fu ◽  
Xiang Zhang ◽  
Xianghui Hou ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Tribological Properties ◽  
Carbon Fabric ◽  
Wear Performance ◽  
High Mechanical Strength ◽  
Wear Rates ◽  
Impregnation Technique ◽  
Fabric Composites ◽  
Wear And Friction

Carbon fabric reinforced phenolic composites are very attractive for use as friction materials under wet conditions due to their excellent self-lubricity, wear resistance, and high mechanical strength. However, brittle fracture of carbon fabric bundles during friction is one of the major problems that limit their application. In this work, MoS2 particles were used as additives and friction modifiers to improve the wear and friction behaviors. The composites containing different amounts of MoS2 particulates (0–20 wt%) were fabricated by impregnation technique. The influence of MoS2 on the tribological properties under oil-lubricated conditions has been studied systematically. The experimental results revealed that tribological characteristics such as coefficient of friction and wear resistance were changed significantly with the relative amount of MoS2. Addition of MoS2 within 15 wt% was found to decrease the wear rates of the composites, while 20 wt% MoS2-filled composites exhibited highest wear rate compared to other test samples. Increasing MoS2 content resulted in a rise in the wear rate of the counterparts. Wear mechanisms had been investigated by scanning electron microscope, which could support the observed wear performance.

Effect of Wettability on Tribological Properties of Porous UHMWPE

2012 ◽  
Vol 549 ◽  
pp. 670-673
Author(s):  
Gang Wu ◽  
Shuang Kun Chen ◽  
Hong Ling Qin ◽  
Chun Hua Zhao
Keyword(s):  
Contact Angle ◽  
Friction Coefficient ◽  
Porous Layer ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Wear Loss ◽  
Hot Press ◽  
Different Characteristics ◽  
Press Molding

Porous UHMWPE with different characteristics are prepared by hot press molding in Metallographic Sample Mounting. Friction and wear loss of porous UHMWPE samples are studied under different loads and lubricant on an improved tribological tester. The friction coefficient and wear loss of samples with porosity of 5.44% are lower than that of samples with porosity of 10.17%. Thickness of porous layer has little effect on the tribological properties of porous UHMWPE. Contact angle remarkable decreases with increasing porosity of UHMWPE samples. The change of wettability is the primary cause of the improving tribological properties of porous UHMWPE.

scholarly journals Friction and Wear Performance of Staple Carbon Fabric-Reinforced Composites: Effects of Surface Topography

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 141 ◽  
Author(s):  
Chang-Mou Wu ◽  
Yi-Ching Cheng ◽  
Wen-You Lai ◽  
Po-Hsun Chen ◽  
Tzong-Der Way
Keyword(s):  
Wear Rate ◽  
Surface Topography ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Applied Pressure ◽  
Specific Wear Rate ◽  
Test Machine ◽  
Carbon Fabric ◽  
Sliding Speed ◽  
Resin Impregnation

Here, staple carbon fiber fabric-reinforced polycarbonate (PC)- and epoxy (EP)-based composites with different impregnating resin levels were fabricated using a modified film stacking process. The effects of surface topographies and resin types on the tribological properties of stable carbon fabric composites (sCFC) were investigated. Friction and wear tests on the carbon composites were conducted under unlubricated sliding using a disk-on-disk wear test machine. Experimental results showed that the coefficient of friction (COF) of the sCFC was dominated by matrix type, followed by peak material portion (Smr1) values, and finalized with core height (Sk) values. The COF of composites decreased by increasing the sliding speed and applied pressure. This also relied on surface topography and temperature generated at the worn surface. However, the specific wear rate was strongly affected by resin impregnation. Partially-impregnated composites showed lower specific wear rate, whereas fully-impregnated composites showed a higher wear rate. This substantially increased by increasing the sliding speed and applied pressure. Scanning electron microscopy observations of the worn surfaces revealed that the primary wear mechanisms were abrasion, adhesion, and fatigue for PC-based composites. For EP-based composites, this was primarily abrasion and fatigue. Results proved that partially-impregnated composites exhibited better tribological properties under severe conditions.

Influence of Carbon Fabric on Fretting Wear Performance of Polyetherimide Composite

2002 ◽  
Vol 124 (4) ◽  
pp. 834-839 ◽  
Author(s):  
Jayashree Bijwe ◽  
J. Indumathi ◽  
Bhabani K. Satapathy ◽  
Anup K. Ghosh
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Fretting Wear ◽  
Operating Parameters ◽  
Carbon Fabric ◽  
Wear Performance ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Microscopic Studies ◽  
Temperature Amplitude

A carbon fabric composite of Polyetherimide (PEI) was fabricated and studied for fretting wear behavior along with neat PEI. The operating parameters were load, temperature, amplitude and frequency of fretting. It was observed that carbon fabric proved to be significantly beneficial for reducing friction and wear of PEI. The friction coefficient of PEI was quite high and independent of operating parameters. For the carbon fabric composites (CFC) it reduced from 0.3 to 0.18 with an increase in load. On the other hand it showed marginal increase (0.18 to 0.28) with increase in temperature from 25°C to 200°C. The wear rate of the composite, CFC showed little variation with increase in load and temperature. Amplitude and frequency also proved to be important influencing parameters. Microscopic studies proved useful for understanding wear mechanism.

Friction and wear properties of carbon fabric composites filled with nano-Al2O3 and nano-Si3N4

2006 ◽  
Vol 37 (9) ◽  
pp. 1351-1357 ◽  
Author(s):  
Feng-Hua Su ◽  
Zhao-Zhu Zhang ◽  
Kun Wang ◽  
Wei Jiang ◽  
Xue-Hu Men ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Carbon Fabric ◽  
Wear Properties ◽  
Fabric Composites ◽  
Friction And Wear Properties

The Influence of Porous Structure on Tribological Properties of Porous UHMWPE

2012 ◽  
Vol 482-484 ◽  
pp. 954-957
Author(s):  
Gang Wu ◽  
Shuang Kun Chen ◽  
Hong Ling Qin ◽  
Chun Hua Zhao
Keyword(s):  
Friction Coefficient ◽  
Porous Structure ◽  
Porous Layer ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Wear Loss ◽  
Hot Press ◽  
Press Molding

Porous UHMWPE with different character were prepared by hot press molding in Metallographic Sample Mounting. Friction and wear loss of porous UHMWPE samples were studied under different loads and lubricant on an improved tribological tester. The friction coefficient and wear loss of samples with porosity of 5.44% are lower than that of samples with porosity of 10.17%, which attribute to the better porous structure and extrusion effect of lubricant in testing. Among the increasing of loads, friction and wear loss of porous samples are enhance rapidly. It is also found that the thickness of porous layer has little effect on the tribological properties of porous UHMWPE.

Experimental investigation on tribological properties of carbon fabric composites: effects of carbon nanotubes and nano-silica

2017 ◽  
Vol 233 (5) ◽  
pp. 874-884 ◽  
Author(s):  
Majid R Ayatollahi ◽  
R Moghimi Monfared ◽  
R Barbaz Isfahani
Keyword(s):  
Carbon Nanotubes ◽  
Friction Coefficient ◽  
Friction And Wear ◽  
Nano Particles ◽  
Woven Composites ◽  
Carbon Fabric ◽  
Wear Properties ◽  
Low Friction ◽  
Fabric Composites ◽  
Friction And Wear Properties

In this study, the effects of nano-[Formula: see text] and carbon nanotubes on the friction and wear properties of carbon-epoxy woven composites have been explored. The unfilled carbon fabric composites and carbon fabric composites filled with carbon nanotubes and nano-[Formula: see text] were fabricated by vacuum infusion process. The worn surfaces were examined and possible wear mechanisms of unfilled and filled carbon fabric composites were discussed. In addition, the friction coefficient curves of unfilled and filled carbon fabric composites were analyzed and compared. The experimental results showed that either of the two nano-particles improved the friction coefficient and wear rate of carbon fabric composites; however, better improvement was observed for nano-SiO2. By adding these nano-particles to unfilled carbon fabric composites, a primary steady-state period with a low friction coefficient appeared in the friction coefficient curve of the composites, which indicates enhancement in bonding strength between carbon fiber and epoxy matrix due to the interfacial reinforcing action of the nano-particles.

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