Hygroscopicity and perspiration finishing fabrics are made of hygroscopicity and perspiration finishing materials. The main components of hygroscopicity and perspiration materials are block copolymer of polyethylene glycol and polyethylene terephthalate - (CH2-CH2-O) n - (PET) -. This hydrophilic polymer has affinity to polyester and other fibers and gives hydrophilic effect to the fibers. It can also give the following excellent properties to fabric at the same time:
1. Sweat absorption and air permeability: The finished fabric has excellent sweat absorption, air permeability, wearability, moisture absorption and quick drying. It can quickly remove sweat and moisture from the skin surface and eliminate the shortcomings of synthetic fabric such as dryness, air permeability and non-sweat absorption.
2. Hydrophilic and antistatic property: The finished fabric has excellent hydrophilicity, good antistatic property, small electrostatic effect, not easy to absorb dust, certain antifouling property and easy to wash.
3. Softness: fabric finished by this product is soft, smooth, comfortable and elegant in style.
How to test the performance of moisture absorption and perspiration?
CNAS approved projects:
AATCC 79-2010 water absorbency of textiles,
ASTM D4772-2009 Water Absorption Testing Method for Thick Fabric Surface (Water Flow Testing Method), GB/T 22799-2009 Water Absorption Testing Method for Towel Products
1, Mao FA method:
Capillary effect, or capillary effect. The wool effect test is generally used to detect the pretreatment effect of textiles. Especially in the two open-width dyeing methods of jig dyeing and pad dyeing, the uniformity of water absorption of left, middle and right pretreatment, and the uniformity of water absorption of inner, middle and outer parting yarns before cheese dyeing are generally tested by the capillary effect method.
Specific methods are as follows: the fabric or yarn of specified width is suspended and fixed at one section, and placed in water of specified temperature or 0.5% potassium permanganate solution at the same time. The height of water or potassium permanganate solution rising in the specified time or the time required to rise to the specified height is tested. The test results are expressed in cm or seconds. The equipment is relatively simple:
2. Drip method:
Dropping method is generally used for rapid detection of water absorption of textiles. For example, when a third-party customer inspects goods, on-site dripping method can quickly test the water absorption of textiles.
The specific method is to drop a drop of water on textiles according to the specified height, and record the time when all the water droplets are absorbed with a stopwatch, which is expressed in seconds. (1ml is about 18-20 drops, so 1 drops of water is about 0.05ml. For the more demanding customers, the drip method will require instant suction (less than 1 second).
3. Settlement method:
Settlement method is to test the time when the fabric of specified area sinks into water. For example, the water absorption test method of national standard towel is settling method.
The specific method is to cut the fabric of specified area in different parts, then put it into the water according to the specified height, and record the time when the fabric completely sinks into the water surface with stopwatch. Remember, it must sink completely into the water surface. Sedimentation is also expressed in seconds. The smaller the value, the better the water absorbency. For more than 60 seconds, it is usually expressed in >, 60 seconds.
