Effect of Recovered Silicon Filler Inclusion on Mechanical and Tribological Properties of Polytetrafluoroethylene (PTFE) Composite

Silicon ◽  
2021 ◽  
Author(s):  
K. Vishal ◽  
K. Rajkumar ◽  
P. Sabarinathan
Keyword(s):  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite

ANALYSIS OF TRIBOLOGICAL PROPERTIES OF SELECTED PTFE-BASED POLYMER COMPOSITES IN A SLIDING INTERACTION WITH ALUMINIUM OXIDE (Al2O3)

Tribologia ◽  
2018 ◽  
Vol 280 (4) ◽  
pp. 107-112 ◽  
Author(s):  
Władysław SKONECZNY ◽  
Sławomir KAPTACZ ◽  
Adrian BARYLSKI ◽  
Tomasz KMITA
Keyword(s):  
Mechanical Properties ◽  
Service Life ◽  
Polymer Composites ◽  
Tribological Properties ◽  
Mechanical Parameters ◽  
Reciprocating Motion ◽  
Graphite Content ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite ◽  
Bronze Powder

The paper presents the microstructure and mechanical and tribological properties of polymer composites based on polytetrafluoroethylene (PTFE) intended for use in friction couples where reciprocating motion is performed, e.g., in compressors or actuators. Micromechanical tests carried out using the Oliver-Pharr method showed that the PTFE composite with a 40% bronze content (T8B) had the most advantageous mechanical properties (hardness H, Young’s modulus E). In turn, tribological tests that were conducted using a ballon- disc tester in the linear (reciprocating) motion showed that the polytetrafluoroethylene composite with a mixture of 25% bronze powder and 15% graphite (T4GM) had the lowest tribological wear. The tribological properties of composite T5W with 25% graphite content were not much worse. Despite the most favourable mechanical parameters, the tribological wear of composites T8B and PTFE with glassy carbon (T3Ws) was nearly twice higher due to the absence of grease formed by a graphite filling. The results show that the use of composites containing a bronze-graphite filling improves the service life of lubricant-free friction couples that perform reciprocating motion.

Mechanical and Tribological Properties of Nylon 1212 Modified with Brown Corundum Ash and Solid Lubricants

2011 ◽  
Vol 295-297 ◽  
pp. 1573-1577 ◽  
Author(s):  
Gao Liang Zhang ◽  
Qing Xiang Zhao ◽  
Min Ying Liu ◽  
Peng Fu ◽  
Yi Bo Yu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Environmental Pollution ◽  
Tribological Properties ◽  
Tribological Property ◽  
Solid Lubricants ◽  
Screw Extruder ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite ◽  
Twin Screw

Brown Corundum Ash(BCA) was used to modify nylon 1212(PA1212), which is produced during the production of electric fused brown corundum alumina and will causes serous environmental pollution if it is not recycled. In order to improve the tribological property of PA1212 composites, Graphite, MoS2 and PTFE were used. The composites were prepared by a twin-screw extruder through melt intercalation. The mechanical properties and the wear resistance of the PA1212/Brown Corundum Ash/graphite/MoS2/PTFE composite were studied. The shearing area of composite and the worn surfaces were examined by scanning electric microscope (SEM).

Mechanical and Tribological Properties of PTFE Composites Filled with POB

2011 ◽  
Vol 194-196 ◽  
pp. 1728-1731 ◽  
Author(s):  
Sha Zhang ◽  
Shi Bo Wang ◽  
Yong Mao
Keyword(s):  
Tribological Properties ◽  
Wear Mechanism ◽  
Indentation Hardness ◽  
Fatigue Wear ◽  
Pressing Method ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite ◽  
Ball Indentation ◽  
Ptfe Composites ◽  
Scanning Electron

The POB/PTFE composites were prepared by blending-cold pressing-sintering-hot pressing method. Influence of POB content on mechanical and tribological properties of the composites was investigated. Worn surfaces were analyzed by scanning electron microscope (SEM). The results indicated that ball indentation hardness and compressive strength of POB/PTFE increase with increasing POB content in composites. Tensile strength, elongation and impact strength of POB/PTFE decrease with increasing POB content in composites. Friction coefficient of composites increases compared to PTFE. Wear resistance of POB/PTFE composites was improved with filling POB. The POB/PTFE composite incorporating 20% POB has best comprehensive mechanical properties. Wear mechanism of PTFE are abrasive wear. Wear mechanism of POB/PTFE composites mainly are fatigue wear and flaking.

The mechanical and tribological properties of grafted LDPE-filled SiO2/PTFE composite

2012 ◽  
Vol 27 (6) ◽  
pp. 783-792 ◽  
Author(s):  
Daofang Chang ◽  
Youfang Huang ◽  
Gang Tang ◽  
Jiahui Huang ◽  
Wanjuan Huang
Keyword(s):  
Tribological Properties ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite

The Addition of a Nano-SiO2 on the Tribological Properties of PTFE Composite

2011 ◽  
Vol 295-297 ◽  
pp. 511-514 ◽  
Author(s):  
Zhen Hua Li ◽  
Wen Zhong Nie
Keyword(s):  
Tribological Properties ◽  
Structural Integrity ◽  
Tribological Performance ◽  
Compression Moulding ◽  
Mechanical And Tribological Properties ◽  
Ptfe Composite ◽  
Ptfe Composites

A kind of novel polytetrafluoroethylene (PTFE)-based composite filled with nano SiO2 are developed for sliding tribological applications. The specimens are fabricated with the compression moulding technique. And the mechanical and tribological properties of the composites are investigated. It is demonstrated that these properties are influenced by the content of fillers. The wear resistances of all the developed PTFE composites are much higher than that of pure PTFE with very low coefficients of friction. Among the developed composites, the mixture of PTFE + 30% nano SiO2 exhibits the best combination of properties. The improved tribological performance of nano-SiO2 filled PTFE composites can be attributed to the improved structural integrity of the composites.

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