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- One of the test methods for the waterproof performance of textiles is the rain method
- The rain method is to test the water repellency of the fabric exposed to the air when simulating heavy rain. This method works for any fabric with or without a water repellent finish. The impact resistance of single-layer fabrics or composite fabrics was measured under the impact strength of water at different speeds. The test results are related to the water repellency of the fibers, yarns, and fabric structures in the fabric. The principle is to wrap the test sample with the weighed absorbent paper, and weigh the absorbent paper again after the test. The difference between the two weights is the water permeability of the sample. It is required that the quality difference of the absorbent paper before and after the test does not exceed 1g; if the quality difference is greater than 5g, it means that the fabric has poor water resistance.
In the experiment, the rain tester is used to test. The AATCC35-2006 test method is to put a standard absorbent paper of 15.2cm×15.2cm behind the sample, and weigh the standard absorbent paper to the nearest 0.1g. On a vertical rigid surface, clamp the sample on the sample holder, place the sample in the middle of the spray, 30.5cm away from the nozzle, and spray the water at (27±1)°C horizontally to the test On the sample, lasted 5min. After the spraying is over, carefully remove the absorbent paper and quickly weigh it to the nearest 0.1g. Calculate the weight increase of the absorbent paper within the 5min spraying time, and take the average value of the test data. If greater than 5.0g, report as +5.0g or >5.0g.
- [Close] [Print] Time:2022/7/12
