(i) low coefficient of friction The low friction coefficient of PTFE (PTFE) material is well known in 1949, K. V and P.H Thomas on the b-l machine to measure the coefficient of friction of PTFE (PTFE) material confirms that the friction coefficient of PTFE (PTFE) material is 0.04 when carrying 1~4 kg and sliding speed 0.1~10 mm.
In the case of bearing 1360 kg, the coefficient of friction reaches 0.01.
(b) Temperature performance The high temperature stability of polytetrafluoroethylene (PTFE) resin material is derived from the strong carbon-fluorine atom bond, and the Polytetrafluoroethylene (PTFE) resin material has been identified as a very useful high temperature resistant polymer. Thus PTFE (PTFE) resin materials remain unchanged at elevated temperatures exceeding almost all other thermoplastic and synthetic rubbers. At the same time, compared with other polymers, in the resistance to pure pressure and high temperature, PTFE (PTFE) Resin material melt viscosity is very high. PTFE (PTFE) resin material is capable of high temperature and flame because of its extremely high heat-fission limit and high melting point and ignition points. In the normal operating temperature range, PTFE (PTFE) rated temperature limit is 260 ℃, in this case, it does not heat fission. Within the range of observation 260-360 ℃, the weight loss is quite small and the loss is due to the absorption of a small amount of gas and moisture in the polymerization.
The thermal fission of polytetrafluoroethylene (PTFE) resin material becomes apparent only if the temperature exceeds 400 ℃. Polytetrafluoroethylene (PTFE) resin material can maintain good performance at low temperatures. At very low temperature, can maintain very strong impact resistance performance. Even when the temperature is low up to -196℃, the carefully manufactured specimen is still resilient, and it has been proved that polytetrafluoroethylene (PTFE) resin material is still useful in temperature-268 ℃, and has higher plasticity in 80 ℃.