What is the physical property of the raw meal belt?
The mechanical properties of polytetrafluoroethylene are relatively soft. It has very low surface energy.
At present, in practical application, many liquid raw meal strips are used to replace solid raw meal strips. The liquid raw meal thread sealant in pipeline has the characteristics of high adhesive strength, good sealing performance, corrosion resistance, high temperature resistance, aging resistance, etc. the precise filtering device, with fast installation, is the most advanced thread sealing agent at present. It is widely used in fire protection, shipbuilding, natural gas, tap water, instrument, air conditioning, gas pipe, oil pipe, hydraulic pipe and other industrial and civil pipeline thread sealing and locking.
Incombustibility: the oxygen limit index is below 90.
Its friction coefficient is only 1 / 5 of that of polyethylene, which is an important feature of perfluorocarbon surface. Because of the low intermolecular force between fluorine and carbon chain, polytetrafluoroethylene has no viscosity.
Polytetrafluoroethylene has excellent mechanical properties in a wide range of temperature from - 196 ℃ to 260 ℃. One of the characteristics of perfluorocarbon polymer is that it is not brittle at low temperature.
The dielectric constant and loss of polytetrafluoroethylene in a wide frequency range are very low, and the breakdown voltage, volume resistivity and arc resistance are high.
The radiation resistance of polytetrafluoroethylene is poor (104 RAD), and the degradation of polytetrafluoroethylene is caused by high energy radiation.