Structural features of PTFE microporous membrane products

ptfe is the English name of polytetrafluoroethylene.

PTFE membrane is a semi-finished product made from rods and strips extruded from PTFE, which are calendered into thin films, and are porous products obtained after stretching and heat setting at temperatures below the melting point.

Microstructure of PTFE membrane: 1. The surface morphology of PTFE microporous membrane has a spider web-like microporous structure.

Pores are formed between the microfibers, and the arrangement direction of the microfibers is basically parallel to the stretching direction; the junction of the fiber bundles is the node, which is formed by the entanglement of many microfibers.

2. Polytetrafluoroethylene microporous membrane is an asymmetric membrane, and the micropore sizes are different on the front and back sides of the membrane.

3. The cross-sectional micropore size of the polytetrafluoroethylene microporous membrane is larger than the micropore size on its surface, and the vertical and horizontal micropore sizes are also different, with the longitudinal micropores being larger than the transverse ones.

4. The cross-section of the polytetrafluoroethylene microporous membrane is a network structure. The three-dimensional structure of the pores has very complex changes such as network connectivity, hole nesting, and channel bending. It may be composed of multiple micropores. A channel, or a micropore may be connected to multiple channels.

Polytetrafluoroethylene microporous membrane is a flexible and elastic microporous material with high porosity, uniform pore size distribution, air permeability and water impermeability. It can be used as sterilization filter membrane, electrolytic separator membrane, gas dialysis membrane, etc. Ultra-clean filtration membranes for various solvents, etc.

It can be used as mountaineering clothing, breathable tents, raincoats, etc. when pasted on fabric.

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The polytetrafluoroethylene microporous membrane provided by this company is of excellent quality.

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