The fluorine atoms in the polytetrafluoroethylene filter membrane have a shielding effect on the skeleton carbon atoms, and the F-C bond has a high bond energy, so ptfe has extremely excellent resistance to high and low temperatures, and has a wide working temperature range for a long time. Approximately between -250~261℃.
Physical effects of temperature: It remains soft at -70~-80℃, the film is still soft at -100℃, and still tough at -200℃, but becomes brittle in liquid air.
The glass transition temperature of ptfe is about 115°C, the crystallization transition temperature is 327°C, commonly known as the melting point, and the decomposition temperature exceeds 400°C, but when it reaches 360°C, the molecular chain has begun to break.
The critical oxygen index of ptfe is above 95, so it is a flame retardant material. The thermal conductivity is 0.20~0.24W/(m·K), which is a medium level among plastics.
Suzhou New Material Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, production and sales of fluorine material membranes. The polytetrafluoroethylene filter membrane materials produced are all imported raw materials, with high uniformity, stable performance and breathability. good.
It also has high filtration efficiency and can meet the filtration efficiency level requirements of sub-high efficiency, high efficiency and ultra high efficiency filters.
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