“waterproof” and ” “Water-repellent”, although there is only one word difference between the two, there are still certain differences in fabric performance. Today, the editor will sort out their similarities and differences for everyone to avoid confusion.
Water-repellent refers to the deposition of hydrophobic compounds on the surface of fibers. There are pores on the surface of the fabric through which air and moisture can pass. Water droplets (like lotus leaves) are generally formed on the cloth surface. Water-repellent is to reduce water The adsorption by the fabric allows the water to be “pushed away” on the surface of the fabric, but the water will still penetrate into the fabric if it stays for a long time.
Waterproof refers to waterproof and breathable fabrics. Generally, it refers to making a rubber base on the bottom of the fabric, which is divided into two types: coating and lamination. Coating is often referred to as coating, and lamination refers to lamination, that is, a layer of waterproof material. The vast majority of waterproof fabrics use laminated (film) materials, and there are also various treatment forms such as capsule fibers, compact fabrics, siliconization, etc., and are usually located on the inner layer of the fabric, which is often referred to as a “waterproof membrane.”
The functional difference between the two:
1. Waterproof products are more durable and have more stable physical and chemical properties than water-repellent products.
2. Waterproof products usually do not fail due to washing and long-term use.
3. Waterproof products have a higher water pressure resistance index than water-repellent products, usually at least 3000mmH₂O.
4. In the specific application of clothing, the main function of the water-repellent treatment is to reduce the adsorption of water by the fabric so that the water can be “pushed away” on the surface of the fabric; the waterproof treatment is a completely impermeable barrier. Whether the fabric is absorbent or not, it keeps water out.
