{"id":2191,"date":"2021-04-06T19:58:37","date_gmt":"2021-04-06T19:58:37","guid":{"rendered":"https:\/\/gcttg.com\/technical-services\/comportement-a-leau\/"},"modified":"2024-03-20T18:05:05","modified_gmt":"2024-03-20T22:05:05","slug":"behaviour-in-water","status":"publish","type":"page","link":"https:\/\/gcttg.com\/en\/technical-services\/behaviour-in-water\/","title":{"rendered":"Behaviour in Water"},"content":{"rendered":"

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Behaviour in water is a key criterion for certain textile or geosynthetic materials. CTT Group<\/span> experts can help your company to evaluate the waterproofing, permeability or transmissivity of your products in development.<\/strong><\/p>\n<\/div><\/div><\/div><\/div><\/div>

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Moisture management measurement (AATCC 195)<\/span><\/p>\n<\/div><\/div><\/div>

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Water permeability of textiles (AATCC 127,<\/span> AAMI PB70<\/span> CAN\/CGSB 4.2<\/span> No 26.3)<\/span><\/p>\n<\/div><\/div><\/div>

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Water penetration test under impact (AATCC 42,<\/span> AAMI PB70)<\/span><\/p>\n<\/div><\/div><\/div><\/div><\/div>

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The waterproofing<\/strong> of clothing used in the medical sector, tents or outdoor shelters can be measured by means of laboratory tests.<\/p>\n

The water vapor permeability<\/strong> of a material is also important data, especially in determining how well a garment will “breathe” by allowing perspiration to escape. This is a major property of outdoor sports textile products, and a essential property for some personal protective equipment, such as firefighter clothing.<\/p>\n

In the case of geosynthetic drainage materials<\/strong>, the transmissivity<\/strong> or permittivity<\/strong>, i.e. the rate<\/span> of water flowing out of a material, will be measured.<\/p>\n

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  • Hydrostatic resistance, liquid impermeability (AATCC 127,<\/span> ASTM D751,<\/span> ASTM F1670);<\/span><\/li>\n
  • Water vapor permeability (ASTM E96,<\/span> ISO 11092);<\/span><\/li>\n
  • Transmissivity of water flow within a drainage layer (ASTM D4716,<\/span> ISO 12958);<\/span><\/li>\n
  • Permittivity of liquid flow perpendicular to the plane of the measuring geotextile (ASTM D4491,<\/span> CAN\/CGSB-148.1<\/span> No. 4);<\/span><\/li>\n
  • Surface wetting, water repellency, contact angle (AATCC 22,<\/span> CAN\/CGSB 4.2<\/span> No. 26.2,<\/span> ASTM D7490);<\/span><\/li>\n
  • Water absorption measurements including volume absorbed, drying rate (AATCC 195,<\/span> ASTM D570,<\/span> INDA 10.1);<\/span><\/li>\n
  • Hydrolysis (ISO TR 20432);<\/span><\/li>\n
  • Filtration aperture (FOS following CAN\/CGSB<\/span> 148.1-No. 10),<\/span> apparent aperture size (AOS following ASTM D4751).<\/span><\/li>\n<\/ul>\n

    In the field of clothing, sportswear, work uniforms and personal protective equipment, water resistance can also be associated with comfort<\/strong> properties: a textile set that lets water vapor through, dries quickly, etc.<\/p>\n<\/div>