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1 test
1.1 Test materials, medicines and instruments Materials and medicines: moisture wicking polyester/cotton blend plain fabric (Donghua Haitian), NaOH (analytical grade)
Instrument: Batch heat setting machine RapidR-3 type (Taiwan Ruby); Digital constant temperature water bath HH-6 type (Guohua Electric Co., Ltd.) electric heating constant temperature air drying oven DHG-9053A type (Shanghai Jinghong Experimental Equipment Co., Ltd. ); electronic strength machine YG061F type (Laizhou Electronic Instrument Co., Ltd.); JSM-5610LV scanning electron microscope (Japan JEOL company); electronic stiffness meter LLY-01 type (Laizhou Electronic Instrument Co., Ltd.)
1.2 Test methods The test contents in this test are carried out in the weft direction of the fabric, unless otherwise specified. The test samples were tested in a constant temperature and humidity chamber [temperature (20 ± 2) ° C, relative humidity 65% ​​± 3%] for 24 h.
1.2.1 Alkali cold-rolled pile scouring selection of NaOH concentration 50, 100, 150, 200, 250g / L, padding (with liquid rate of 100%), then put into a sealed plastic bag, stacked at room temperature 25 ° C l2 or 24h. Rinse with warm water and cold water after stacking.
1.2.2 Heat setting The heat treatment is carried out by a batch heat setting machine. The stretching ratio is 2.5% or 5% when the shape is stretched. When the hot air shrinks, the fabric to be treated is placed on the guide belt without tension and enters the heat. The setting machine is hot air treated. The heat setting temperature was 130, 150, 170, 190, 210 ° C; the heat setting time was 60 s.
1.2.3 Weight loss test The mass change before and after alkali treatment indicates the degree of mass reduction of polyester after alkali treatment.
Weight loss rate /% = (W before - after W) / W before × 100w before
1.2.4 moisture permeability test according to GB/T12704--1991 "measurement of moisture permeability of fabrics method"
The difference between the price of pre-treatment and post-treatment of moisture wicking polyester fabric
Moisture wicking polyester fiber has excellent moisture absorption and moisture permeability due to the groove structure on the surface. Such fibers are often blended or interwoven with cellulosic fibers or other chemical fibers to improve the moisture absorption and moisture permeability of the fabric. In the composite fabric blended with cellulose fibers, the cellulose fibers are generally subjected to alkali desizing, scouring, heat setting and the like. In this experiment, the effects of alkali concentration, heat setting temperature, weft stretching and other process parameters on the properties of moisture wicking polyester fiber were studied in the moisture wicking polyester/cotton fabric during desizing and refining.