AATCC_22-2005_纺织品_拒水性测试_喷淋法.pdfVIP

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AATCC_22-2005_纺织品_拒水性测试_喷淋法.pdf

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AATCC_22-2005_纺织品_拒水性测试_喷淋法.pdf

AATCC Test Method 22-2005 Water Repellency: Spray Test Developed in 1941 by AATCC Commit- screening finishes. It is not intended, imum of 4 h before testing. tee RA63; revised 1952, 1996, 2001, however, for use in predicting the proba- 7.2 Where possible, each specimen 2005; reaffirmed 1943, 1961, 1964, ble rain penetration resistance of fabrics, should contain different groups of length- 1967, 1971, 1974, 1977, 1980, 1985, since it does not measure penetration of wise and widthwise yarns. 1989; editorially revised 1987. Techni- water through the fabric. For testing rain cally equivalent to ISO 4920. penetration, AATCC Method 35, Water 8. Procedure Resistance: Rain Test, should be used. 8.1 Calibrate the apparatus by pouring 1. Purpose and Scope 6. Apparatus and Materials 250 mL of distilled water at 27 ± 1°C (80 1.1 This test method is applicable to ± 2°F) into the funnel of the tester and any textile fabric, which may or may not 6.1 AATCC Spray Tester (see 11.1, measure the time required for the funnel have been given a water-repellent finish. Figs. 1, 2, 2A and 3). to empty. It measures the resistance of fabrics to 6.2 Graduated cylinder, 250 mL. 8.1.1 The spray time must be between wetting by water. It is es