Principles and uses of waterproofing and moisture permeability



The concept of waterproof and breathable membrane: Waterproof and breathable membrane is a new type of polymer waterproof material. It uses polyurethane (TPU) as the main material …

The concept of waterproof and breathable membrane:

Waterproof and breathable membrane is a new type of polymer waterproof material. It uses polyurethane (TPU) as the main material and introduces hydrophilic groups. The surface of the film has no micropores, so it is windproof and water-repellent. Because the film has a hydrophilic base and conducts moisture absorption, it has a moisture-permeable function.

The working principle of waterproof and breathable membrane:

In the state of water vapor, the water particles are very small. According to the principle of capillary movement, they can smoothly penetrate the capillary to the other side (in our products, they can smoothly pass through the middle plastic layer), thus causing vapor permeability. When water vapor condenses into water droplets, the particles become larger. Due to the surface tension of the water droplets (the water molecules “pull and compete” with each other), the water molecules cannot smoothly break away from the water droplets and penetrate to the other side, which is to prevent Water penetration occurs, making the breathable membrane waterproof.

Uses of waterproof and breathable membrane:

Racing suits, motorcycle suits, golf suits, waterproof suits, hiking shoes, shower curtains, tablecloths, raincoats, baby bibs, sailing suits, fishing pants, snow jackets, windbreakers, cold-proof jackets, ski suits, ski gloves, mountaineering suits, hunting Suits, surfing suits, horse suits, jackets, combat suits, lighting accessories, mobile phone waterproof accessories, etc.

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Author: clsrich

 
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