1. What is Hydrostatic Pressure Test yKcTextile Testing Instruments, Testing Equipment Manufacturer
The hydrostatic pressure test (also called impermeability test) is one of the important indicators of waterproof and breathable fabrics. Hydrostatic pressure refers to the resistance that water encounters as it passes through a substance. The fabric is subjected to increasing water pressure at standard atmospheric pressure until water droplets seep from the back of the fabric. The water pressure measured at this time is the hydrostatic pressure. The more hydrostatic pressure a fabric can withstand, the more water repellent or leak proof it is. yKcTextile Testing Instruments, Testing Equipment Manufacturer
yKcTextile Testing Instruments, Testing Equipment Manufacturer 2. Principle of hydrostatic test of fabric:
yKcTextile Testing Instruments, Testing Equipment Manufacturer Through three test methods: dynamic test, static test and program, the test sample is fixed in the specified test area in the standard. Air pressure control Set the air pressure 0-5bar
yKcTextile Testing Instruments, Testing Equipment Manufacturer
in the built-ine water tank filled with distilled water. The test head is connected to the water tank. After the test is started, the test pressure is controlled automatically. < br />
yKcTextile Testing Instruments, Testing Equipment Manufacturer 3. Influencing factors of the water pressure resistance test of the fabric:
yKcTextile Testing Instruments, Testing Equipment Manufacturer (1) The tightness of the fabric yarn and the gap between the yarns directly affect the water pressure resistance performance. In general, the tighter the fabric structure, the better the water resistance.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (2) The pore size of the coating film, the larger the pore size of the film, the worse the hydrostatic pressure resistance of the coated fabric.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (3) The size of the contact angle 0. At 0>90 has the fabric water repellency and the water pressure resistance of the fabric increases with an increase of 0.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (4) Layer thickness. 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 not good. Diversion; the coating is thicker, which improves the water pressure resistance of the fabric.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (5) The thickness of the fabric. The thicker the fabric, the greater the moisture resistance and the higher the water pressure rating.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (6) The thickness of the yarn. For tight fabrics with good hygroscopicity, the yarn radius decreases due to capillary action. Can improve the impermeability of fabrics.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (7) Warp and woof performance. 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 warp and weft yarns, and water droplets are easy to infiltrate, reducing the water pressure resistance of the fabric.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (8) Coating quality. It is required that the whole fabric is uniform and has a certain fastness. The better the coating quality, the better the anti-seepage performance.
yKcTextile Testing Instruments, Testing Equipment Manufacturer (9) The elasticity of the fabric. Elastic fabrics, water resistance also have a certain impact
yKcTextile Testing Instruments, Testing Equipment Manufacturer (10) The size of the position sample and the flatness of the sample also affect the data during the test. yKcTextile Testing Instruments, Testing Equipment Manufacturer
yKcTextile Testing Instruments, Testing Equipment Manufacturer
yKcTextile Testing Instruments, Testing Equipment Manufacturer
4. Test standard yKcTextile Testing Instruments, Testing Equipment Manufacturer
yKcTextile Testing Instruments, Testing Equipment Manufacturer
yKcTextile Testing Instruments, Testing Equipment Manufacturer
AATCC 127 Option 2,ISO 811, ISO 1420, IOS4744 yKcTextile Testing Instruments, Testing Equipment Manufacturer
< p class= style=box-sizing:border-box;margin-top:0px;margin-bottom:0px;padding:0px;font-family:Montserrat-Light ;color:#555555;whitespace: normal;backgroundcolor :#FFFFFF;>FZT01004, DIN53886,JIS L1092, EN20811, EN13726-3
yKcTextile Testing Instruments, Testing Equipment Manufacturer yKcTextile Testing Instruments, Testing Equipment Manufacturer
yKcTextile Testing Instruments, Testing Equipment Manufacturer
The above content is collected by Qinsun. Qinsun specializes in the production and research and development of physical performance testing equipment. We have more than 20 years of experience in research and development and specialize in providing total solutions for testing equipment for textiles andclothing . Welcome to inquire.yKcTextile Testing Instruments, Testing Equipment Manufacturer
