DRAMATIC ENHANCEMENT OF ABRASION RESISTANCE THROUGH CERAMER
Whereas push-pull cables filled with 7% PPS were rubbed through after only about 50,000 cycles, push-pull cables containing the same amount of Ceramer were still intact after 1 million cycles.
Even reducing the amount of Ceramer by more than half to 3% prevented rubbing through of the push-pull cables. It was found that the abrasion resistance could be increased still further by incorporating special additives.
Compared to push-pull cables made out of PTFE/PPS compounds, the wear dependant life span could be raised more than 20-fold.
Abrasion behavior of push-pull cables made of
PTFE paste extrusion powder
PTFE with
Content Filler
Loss of weight [%] after
500,000 cycles
1,000,000 cycles
23 °C
150 °C
180 °C
23 °C
150 °C
180 °C
no
(0 wt.%)
PPS
(7 wt.%)
Ceramer
(3 wt.%)
Ceramer
(7 wt.%)
Ceramer
+additive
(4 wt.%)
- - - - - Rubbed through after 30,000 cycles - - - - -
- - - - - Rubbed through after 50,000 cycles - - - - -
1.6
0.4
0.3
3.5
0.6
0.2
n.d.
1.8
n.d.
2.3
0.9
0.9
n.d.
1.5
0.5
n.d.
2.8
n.d
All abrasion tests were carried out without using any lubricant.
The abrasion resistance of the tubes was tested according to the Bowden gear method.
