Temperature And Pressure Resistance Of PFA Tube
Temperature and pressure resistance of PFA tube
PFA pipe is made by extrusion of PFA resin. The long-term service temperature of PFA hose is - 80 ℃ ~ 260 ℃, which can be used as the delivery pipe and inner liner of corrosive liquid or gas medium, and there are many advantages of PFA pipe
PFA pipe is a small amount of copolymer of perfluoropropylperfluoroethylene ether and polytetrafluoroethylene. Its melting adhesion is enhanced, and the viscosity of the solution is decreased, but its performance is unchanged compared with that of polytetrafluoroethylene. This resin can be directly processed into products by common thermoplastic molding method.
The long-term use temperature of PFA pipe is - 80-260 ℃. Some of them are resistant to chemical corrosion and all chemicals. They also have good electrical performance. Their electrical insulation is not affected by temperature. Their chemical resistance is similar to that of polytetrafluoroethylene, which is better than that of vinylidene fluoride. Its creep resistance and compression strength are better than polytetrafluoroethylene, tensile strength is high, elongation can reach 100-300%, dielectric property is good, radiation resistance is excellent, physiological inertia, can be implanted in human body.
Pressure resistance is an important parameter for the performance of PFA tube. When the PFA pipe is at normal temperature, the static pressure that the waveform can bear without plastic deformation is the pressure resistance of the PFA pipe. In general, the PFA pipe works under a certain pressure, so it must bear this pressure without plastic deformation during the whole working process.
The pressure resistance of PFA tube actually belongs to its strength category. The key of calculation is stress analysis, which is also stress analysis on the pipe wall of PFA. As long as the stress on the stress point of the pipe wall of PFA does not exceed the yield strength of the material, the pressure it receives will not reach its pressure resistance