The application range of waterproof Oxford cloth is becoming more and more extensive. If the fabric is not very Understand that it is possible to choose fabrics of poor quality, and the waterproof effect is not that good. So what will affect the waterproof effect?
1. There are three main reasons for poor waterproof performance:
1. The dyed cloth of processed cloth is not cleaned sufficiently, and scouring agent, leveling agent, dispersant, penetrating agent and other additives remain on the cloth.
2. Problems with the working fluid, improper concentration or change in concentration during processing; the working fluid is affected by mechanical stirring, temperature, and chemicals. etc., the stability will be affected; the working fluid preparation sequence is improper.
3. Reasons for processing conditions, improper selection, or insufficient and uneven drying and baking conditions.
2. Main countermeasures for the above problems
a. Before waterproof processing, the processed cloth should be fully washed.
b. Choose a fluid suitable for fiber processing, and replenish newly prepared working fluid as much as possible during processing. Strengthen the temperature management of processing cloth to prevent the hot cloth from directly entering the studio after drying. Understand the compatibility of the blended chemicals and prepare the working solution according to the mixing sequence. When other additives are diluted with warm water, they need to be cooled before adding the Deco Nano Series. The prepared working fluid must be used within 24 hours.
c. Drying and baking temperatures should be uniform, and the baking temperature should not be too low, generally above 140°C [600D waterproof coating Oxford cloth]
The working principle of waterproof Oxford fabric is: in the state of water vapor, the water particles are very small , according to the principle of capillary movement, it can smoothly penetrate into the capillary tube to the other side, thereby 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.
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