The mechanical properties of PTFE are relatively soft. Has a very low surface energy.
In practical applications, many liquid raw materials are used to replace the solid raw material belt. The liquid raw material has the characteristics of high bonding strength, good sealing performance, corrosion resistance, high temperature resistance and aging resistance in the pipeline thread sealant. , fast installation, is the most advanced thread sealant. Widely used in fire protection, shipbuilding, natural gas, water, instrumentation, air conditioning, gas pipe, oil pipe, hydraulic pipe and other industrial civil pipeline thread sealing and locking.
Non-combustibility: The oxygen limit is below 90.
Its coefficient of friction is extremely small, only 1/5 of polyethylene, which is an important feature of the perfluorocarbon surface. Moreover, since the intermolecular force of the fluorine-carbon chain is extremely low, the polytetrafluoroethylene has no stickiness.
Polytetrafluoroethylene maintains excellent mechanical properties in a wide temperature range of -196 to 260 ° C. One of the characteristics of perfluorocarbon polymers is that they are not brittle at low temperatures.
Polytetrafluoroethylene has a low dielectric constant and dielectric loss over a wide frequency range, and has high breakdown voltage, volume resistivity, and arc resistance.
The radiation resistance of PTFE is poor (104 rad), which is degraded by high-energy radiation, and the electrical and mechanical properties of the polymer are significantly reduced.