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2022-12-07 0 Views

Determination of watertightness and moisture permeability by means of a textile hydrostatic pressure

There are many factors that influence the water resistance and moisture permeability of fabrics. Thus, the problems of the material itself and the production process and technical problems of the textile process will all be affected. The waterproofness index of waterproof and moisture-permeable fabrics depends on the following factors:

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1. The thickness of the fabricrcgTextile Testing Instruments, Testing Equipment Manufacturer

The thicker the fabric, the greater the moisture resistance, the greater the water pressure resistance value. rcgTextile Testing Instruments, Testing Equipment Manufacturer

2. The thickness of the yarnrcgTextile Testing Instruments, Testing Equipment Manufacturer

For the compact fabric woven from fibers with good hygroscopicity, the radius of the yarn can be reduced due to the capillary effect. Water resistance. rcgTextile Testing Instruments, Testing Equipment Manufacturer

3. The tightness of the fabricrcgTextile Testing Instruments, Testing Equipment Manufacturer

The increase in the distance between the yarns directly affects the water pressure resistance. In general, the tighter the fabric structure, the better the water resistance. rcgTextile Testing Instruments, Testing Equipment Manufacturer

4.The pore size of the coating filmrcgTextile Testing Instruments, Testing Equipment Manufacturer

The larger the pore size of the film, the worse the hydrostatic pressure resistance of the coated fabric. rcgTextile Testing Instruments, Testing Equipment Manufacturer

5. The size of the contact anglercgTextile Testing Instruments, Testing Equipment Manufacturer

At 0>90°, the fabric has water repellency, at this time, as the angle increases, the water pressure resistance of the fabric also increases. rcgTextile Testing Instruments, Testing Equipment Manufacturer

6. Layer thicknessrcgTextile Testing Instruments, Testing Equipment Manufacturer

If the coating is too thin, the coating agent is not easy to form a continuous film on the surface, and the water pressure resistance of the coated fabric is reduced Increased pressure capacity. rcgTextile Testing Instruments, Testing Equipment Manufacturer

7. The performance of warp and weft yarnsrcgTextile Testing Instruments, Testing Equipment Manufacturer

Under the action of water pressure, warp and weft yarns with good elasticity are easy to elongate, resulting in the formation of gaps between adjacent warps - and weft yarns, water droplets It penetrates more easily, so that the water pressure resistance of the fabric decreases. rcgTextile Testing Instruments, Testing Equipment Manufacturer

8. Coating qualityrcgTextile Testing Instruments, Testing Equipment Manufacturer

It is required that the entire fabric surfaceis uniform and has a certain authenticity. The better the quality of the coating, the better the water resistance. rcgTextile Testing Instruments, Testing Equipment Manufacturer

rcgTextile Testing Instruments, Testing Equipment Manufacturer

The fabric hydrostatic pressure tester is used for testing medical clothing, compact fabrics, such as canvas, tarpaulin, tarpaulin, tent cloth, waterproof It is an independent company owned by QINSUN developed and produced test device to evaluate the waterproof and moisture permeability performance of fabrics such as rainwear fabrics and other materials. sales service. rcgTextile Testing Instruments, Testing Equipment Manufacturer

Applicable standards:rcgTextile Testing Instruments, Testing Equipment Manufacturer

GB 19082-2009 Technical requirements for disposable medical clothing 5.4.1 Water resistance rcgTextile Testing Instruments, Testing Equipment Manufacturer

GB 4744-1997 Water resistance of textile fabrics Determination of hydrostatic pressure test

GB 4744-2013 water permeability tester for textilesrcgTextile Testing Instruments, Testing Equipment Manufacturer

AATCC 127, ISO 16603, YYT 0700rcgTextile Testing Instruments, Testing Equipment Manufacturer