Analysis of the reason why the price of PTFE pipe is higher than that of polyethylene pipe! It is also a fluorine material, but why PTFE pipe is much higher than polyethylene pipe in terms of price, connected with their specifications, materials and performance and other factors. Moreover, the expanded PTFE, which is developed on the basis of ordinary PTFE, also presents a unique structure and performance.

If PTFE tubes are distinguished from specifications, they can be divided into three types, and their respective production methods are also different. For example, PTFE tubes with an outer diameter of 1mm-25mm and a wall thickness of 0.1 mm-2 mm are made of imported dispersed polymerized PTFE resin as raw materials and processed by paste pressing.

The polytetrafluoroethylene tube with an outer diameter of 25mm-200mm and a wall thickness of 1.5mm-8mm is made of suspended polytetrafluoroethylene resin combined with plunger extrusion process. There is also 1 kind of polytetrafluoroethylene tube with an outer diameter of 25mm-1200mm and a wall thickness of 5mm-500mm, which adopts a compression molding process.

From the performance analysis, the PTFE pipe has better heat resistance than the polyethylene pipe. It can withstand a high temperature of 280 ℃, and the instantaneous temperature reaches 320 ℃; at the same time, the corrosion resistance of the PTFE pipe is also better. In addition, the polyethylene tube can be lit and spontaneous combustion, but the PTFE tube is not easy to burn, it is difficult, so the price of PTFE tube will be higher.

Expanded polytetrafluoroethylene, which is developed on the basis of polytetrafluoroethylene, also has unique structure and performance. Due to its good biocompatibility, it is very suitable for organ repair materials and plastic surgery materials, and plays an important role in the medical field.

Expanded polytetrafluoroethylene is prepared by multi-directional stretching high temperature sintering method, using multi-directional tensile tester, after a certain ratio of PTFE and extrusion agent mixing, grinding, molding, calendering, drying, stretching, sintering, cooling process, the preparation of the appearance of white, soft, elastic expanded polytetrafluoroethylene material.