Mechanical and Tribological Properties of PTFE Composites Filled with POB

Abstract

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.

Comparison of wear behavior of ABS and ABS composite parts fabricated via fused deposition modelling

“…When material slide against the emery paper, which was pasted on the rotating disk, material start delaminating form the pin and grooves were formed on the surface and the wear was majorly reduced due to presence of abrasive particle in composite material marked in dark black circles. These results are in line with the finding of other researchers (Xu et al, 2010;Zhang et al, 2011;Boparai et al, 2015;Kulkarni et al, 2016). …”

Tribological behavior of poly (phenyl p-hydroxybenzoate)/polytetrafluoroethylene composites filled with hexagonal boron nitride under dry sliding condition

“…Some molded PHBA/PTFE parts fabricated by cool pressure sintering or compression molding have been applied for self-lubricants [10,17,18]. Friction coefficient of PHBA/PTFE composites was usually higher than that of pure PTFE because of high friction coefficient of PHBA, although the composites exhibited lower wear rate and high PV value [10,18]. In order to reduce friction coefficient of PHBA/PTFE composites, hexagonal boron nitride (h-BN) was selected as potential filler.…”

Mechanical and Reaction Properties of PTFE/Al/MnO<sub>2</sub> Reactive Materials at Different Strain Rates

“…Polytetrafluoroethylene (PTFE), which has good self-lubricity, chemical stability and low friction coefficient, is an excellent engineering plastic and an ideal anti-friction material, so it is typically used as a matrix for polymer composites. On the basis of PTFE, various granular reinforcing fillers are added, such as Al 2 O 3 , SiC, SiO 2 , Cu 2 O, PbO, Pb 3 O 4 , Cu, Al, W [1][2][3][4][5][6][7][8], to prepare PTFE-based composites. These fillers not only enhance the density, strength, and hardness of PTFE-based composites, but also some of them, such as Al and Mg, can react with PTFE [9][10], making PTFE-based composite materials more widely used in military and civilian applications.…”