A low-carbon and environmentally friendly sizing method for cotton yarn
A low-carbon, environmentally friendly, cotton yarn technology, applied in plant fibers, fiber processing, textiles and papermaking, etc., can solve the problems of volatile organic solvents, operator hazards, and high energy consumption, to avoid pollution, avoid hazards, and formulate simple effect
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Embodiment 1
[0023] The low-carbon and environmentally friendly sizing method of cotton yarn in this embodiment has the following steps:
[0024] (1) Use 1-butyl-3-methylimidazolium bromide ([Bmim]Br) to desize the cotton-type fabric to remove the starch size of the cotton-type fabric, take part of the mixed solution, and measure the solid content of 8 %, use the mixed solution to sizing cotton yarn; use 1-butyl-3-methylimidazolium bromide ([Bmim]Br) to desize cotton-type fabric starch size as follows: put 2g of cotton fabric at 80°C Immerse in 50g of 1-butyl-3-methylimidazolium bromide ([Bmim]Br) for 10min. The specific operation is to first raise the temperature to 60℃ at a heating rate of 3℃ / min, and then raise the temperature to 80℃ at a rate of 1℃ / min. ℃, keep warm for 10 minutes, cool down to room temperature, and get the mixed solution after the cloth is released;
[0025] (2) Before sizing, the yarn was pre-impregnated with pure [Bmim]Br ionic liquid at 25 °C for 3 minutes, and th...
Embodiment 2
[0030] The low-carbon and environmentally friendly sizing method of cotton yarn in this embodiment has the following steps:
[0031] (1) Use 1-allyl-3-methylimidazolium chloride ([Amim]Cl) to desize the cotton-type fabric to remove the modified starch size of the cotton-type fabric, take part of the mixed solution, and measure the solid content in it. The ratio is 13%, and the mixed solution is used to sizing the cotton yarn;
[0032] (2) Before sizing, pre-soak the yarn with pure ionic liquid at 40°C for 3 minutes, put the pre-impregnated yarn into the 40°C mixture at room temperature for sizing, and fully contact and react with the yarn for 20 minutes ;
[0033] (3) Take out the yarn, put it into a beaker filled with 100mL of absolute ethanol or deionized water for double-diffusion film formation, take it out and dry it, the reduction rate of hairiness is 85-95%, and the breaking strength increases by 30-45%.
[0034] (4) The mixed solution after sizing contains the remain...
Embodiment 3
[0036] The low-carbon and environmentally friendly sizing method of cotton yarn in this embodiment has the following steps:
[0037] (1) Use 1-butyl-3-methylimidazolium chloride salt ([Bmim]Cl) to desize the cotton-type fabric, so that the carboxymethyl cellulose slurry of the cotton-type fabric is removed, and take part of the mixed solution to measure the The solid content rate is 10%, and the mixed solution is used to sizing the cotton yarn;
[0038] (2) Before sizing, pre-soak the yarn with pure ionic liquid at 30°C for 3 minutes, then put the pre-impregnated yarn into the 45°C mixture at room temperature for sizing, and fully contact with the yarn for 30 minutes ;
[0039] (3) Take out the yarn, put it into a beaker filled with 100mL of absolute ethanol or deionized water for double-diffusion film formation, take it out and dry it, the hairiness is reduced by 85-90%, and the breaking strength is increased by 45-60%.
[0040] (4) The mixed solution after sizing contains ...
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