Did you know that Teflon waterproof and breathable membrane can exert its advantages in many places, such as electronic products, building materials, etc. In addition, shoes and clothes with waterproof and breathable membrane can make us better in rainy days. Compared with traditional waterproof clothes, the breathability will provide us with better comfort.
“Jacket” is a word invented in China. It actually refers to hard shell (HardShell) abroad, which is a basic equipment for outdoor sports.
Sometimes we may be walking in the wind and rain and sweating at the same time, so we need waterproof and breathable clothes.
Once upon a time, waterproofing and breathability were two things that couldn’t be achieved at the same time.
If you want waterproofing, you need to sacrifice the breathability of your clothes; if you want your clothes to be breathable, you have to give up waterproofing.
Early jackets made from a blend of two materials would still allow water to enter, and the coating could not be fully waterproof and breathable. Various defects gave rise to the birth of new materials.
In 1969, the emergence of a membrane full of small holes brought jackets into a new era.
The emergence of Teflon waterproof and breathable membrane has made jackets truly waterproof and breathable, and jackets using coating + film have become mainstream.
Teflon waterproof and breathable membrane is made through special processes such as mixing, extrusion, extrusion, calendering, and biaxial stretching.
Due to the characteristics of ptfe fibrillation, when performing unidirectional stretching (i.e. longitudinal stretching), the ptfe polycrystalline aggregates begin to extend and form some fibrils. The fibrils are parallel to the stretching direction. At the same time, the fibrils The length increases.
The cross-section of ptfe fibrils is wide and thin, its maximum width is about 100nm, and the smallest fibril is ?0.5??1.0nm.
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