Protective ability of ptfe nanomembrane
Curiosity has long been an important driving force for human social progress, and it has always promoted human beings to bravely try , explore the unknown, ask questions, break the rules. It is precisely because of this curiosity that people developed and produced PTFE nanofilms.
PTFE is a semi-crystalline polymer. Its crystals are composed of parallel-arranged folded chains to form lamellae, and then the lamellae are accumulated to form a ribbon-shaped polycrystalline polymer. The lamellae and lamellae are The intergranular space is the viscous amorphous part. The interaction between PTFE molecular chains is weak, and the activation energy of the ribbon structure to form fibers is only 11.3KJ/mol, which is only several times the ambient temperature. Therefore, under the action of external stress, the ribbon structure can easily be pulled out of particles and become microfibers.
PTFE nanofilm has excellent media resistance and weather resistance. The microporous structure of ptfe microporous membrane is unique – the fibers are distributed radially with the “nodes” as the center, and the different “nodes” are interlaced by fine fibers, just like thousands of layers of screens with different meshes. Stacked together, the aperture is 0.1-1um, and the aperture rate is more than 80%. While being breathable, it achieves good physical barrier against various particles and still has protective capabilities when worn for a long time.
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