AATCC35 water and rain test method - China Garment Website_China's popular garment and fashion information platform

In order to adapt to the current consumer market demand and the rapid development trend of functional textiles, more and more textile companies choose to upgrade traditional single fabrics and give them multi-functional properties, such as waterproof functions. Waterproof performance test standards are commonly used in the textile industry, such as the AATCC 35 water-repellent rain test standard. So what is the AATCC35 water and rain test method?

1. Test purpose and scope; This method is applicable to any fabric with or without water-repellent finishing. It is used to measure the impact water permeability of the fabric and predict the permeability of the fabric to rainwater. Especially suitable for measuring the permeability resistance of clothing fabrics.

2. Principle: Spray water onto the surface of the sample for 5 minutes, place a weighed absorbent paper behind the sample, and then weigh the sprayed absorbent paper to measure the water permeability.

3. Equipment and materials: AATCC rain tester, white AATCC absorbent paper, distilled or deionized water, and a balance accurate to 0.1g.

4. Samples: Take at least three samples, each 20X20cm. The sample and absorbent paper were placed in a standard atmosphere to condition the humidity for at least 4 hours before testing.

5.} Process: Place a 15.2cmX15.2cm standard absorbent paper behind the sample, and weigh the standard absorbent paper, accurate to 0.1g. Clamp the specimen to the specimen holder on a vertical rigid surface. The sample is placed in the middle of the spray, 30.5cm away from the nozzle. Spray the 27+1C water flow directly onto the sample horizontally for 5 minutes. After spraying, carefully remove the absorbent paper and weigh quickly to the nearest 0.1g.

6. Rating: Calculate the increase in weight of the absorbent paper within 5 minutes of spraying, and average the three results.

7. Report: Report the average value. If it is greater than 5.0g, report it as +5.0g or >5.0g.

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