1. The surface morphology of ptfe bubble point 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.PTFE bubble point membrane is an asymmetric membrane, and the micropore size is different on the front and back sides of the membrane.
3. The cross-sectional micropore size of the 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 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. There may be multiple micropores forming a channel, or there may be one channel. The micropores are connected to multiple channels.
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