Hydrostatic head test for the Textiles test in the textile industry is very extensive, but also a certain degree of resistance to hydrostatic pressure requirements is need for some special fabrics , so the static water pressure test is necessary. What is the main test principle of this type of experiment? let us explain briefly.The Hydrostatic head Tester is the best Hydrostatic head test machine.
The so-called waterproof and moisture (water repellent), is to make the water at low water pressure does not wet the fabric, but the body sweat in the form of water vapor through the fabric conduction to the outside world, water vapor is not between the body surface and fabric aggregation, Do not feel "boring" phenomenon. Fabric after water repellent finishing, finishing agent to change the fiber surface properties, so that the fiber surface of the hydrophilic to hydrophobic, the fabric is not easy to be wet and still breathable, and soft to the touch.
Textile washing, fabric refining desizing, the absorption of the dye and water and oil repellent properties are related to the wettability of the liquid on the solid. Washing, scouring, desizing and dye absorption processes require fibrous materials with high wettability and permeability, while water repellency requires that the fibers are not wet or wet. The wetting of the fabric is the rapid spread of moisture on the surface of the fabric, and the purpose of water repellent is just the opposite, trying to make the water droplets on the fabric surface is not spread, do not wet the fabric, still keep the water droplets.
Wetting and water repellent depends on the surface tension of solids and liquids. If the solid surface tension is greater than the liquid surface tension, the liquid wetting the solid surface, the solid surface has a water repellent effect. The ability of the fabric to resist wetting and infiltration of the liquid depends on the chemical structure of the fabric, surface geometry, roughness and hairiness. The finishing agent used for the repellent effect has a large contact angle or a low surface tension. Fabrics treated by these finishing agents, the surface tension is reduced, so as to achieve water repellent effect.
The so-called waterproof and moisture (water repellent), is to make the water at low water pressure does not wet the fabric, but the body sweat in the form of water vapor through the fabric conduction to the outside world, water vapor is not between the body surface and fabric aggregation, Do not feel "boring" phenomenon. Fabric after water repellent finishing, finishing agent to change the fiber surface properties, so that the fiber surface of the hydrophilic to hydrophobic, the fabric is not easy to be wet and still breathable, and soft to the touch.
Textile washing, fabric refining desizing, the absorption of the dye and water and oil repellent properties are related to the wettability of the liquid on the solid. Washing, scouring, desizing and dye absorption processes require fibrous materials with high wettability and permeability, while water repellency requires that the fibers are not wet or wet. The wetting of the fabric is the rapid spread of moisture on the surface of the fabric, and the purpose of water repellent is just the opposite, trying to make the water droplets on the fabric surface is not spread, do not wet the fabric, still keep the water droplets.
Wetting and water repellent depends on the surface tension of solids and liquids. If the solid surface tension is greater than the liquid surface tension, the liquid wetting the solid surface, the solid surface has a water repellent effect. The ability of the fabric to resist wetting and infiltration of the liquid depends on the chemical structure of the fabric, surface geometry, roughness and hairiness. The finishing agent used for the repellent effect has a large contact angle or a low surface tension. Fabrics treated by these finishing agents, the surface tension is reduced, so as to achieve water repellent effect.
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