ptfe biaxially stretched film has stable chemical properties
PTFE biaxially oriented film has the characteristics of stable chemical properties, high filtration efficiency, thorough dust cleaning, high temperature resistance, corrosion resistance, etc.
In addition, this membrane is loved by everyone for its wide application range, long life, low energy consumption and low cost.
So it is deeply loved by industries such as medicine, clothing, and industry.
According to data, ptfe biaxially stretched film can easily stretch out fibrils and nodes at a lower temperature (35°C), but when the strain reaches 25%, the base tape breaks and the tensile stress decreases rapidly. Small; when the tensile temperature is 90°C, the base tape will break when the strain reaches 100%; when the tensile temperature is above 140°C, even when the strain reaches 300%, the base tape will not break.
Therefore, high-temperature stretching makes the film thinner more easily than low-temperature stretching.
In the transverse stretching direction of the film, in the areas with the same distance from the edge, the pore diameter of the high-temperature stretched film is generally larger; at the same stretching temperature, the pore diameter of the area closer to the edge of the film is also generally higher than that in the middle. area.
The size of the film pores corresponds to the thickness of the film. In areas where the film thickness is small, the pores will be larger due to the larger fiber elongation, and vice versa.
Suzhou New Material Technology Co., Ltd. is a high-tech enterprise specializing in the research, development and production of fluorine material film technology. In our actual processing of ptfe biaxially oriented film, the transverse expansion is usually around 170°C.
The film has good void characteristics. After the film is stretched in different directions, the structure of the micropores and agglomerations of the film changes, and the mechanical properties of the film have anisotropic characteristics.
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