Short-flow dyeing and finishing technology of polyester-cotton fabric
A short process and fabric technology, applied in dyeing, plant fiber, fiber treatment, etc., can solve the problems of long dyeing and finishing process, low production efficiency, large water consumption, etc., and achieve the effect of shortening the dyeing and finishing process
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Embodiment 1
[0057] A kind of chelating dispersant, polymerized by 11 parts of maleic acid monoacylate, 8 parts of allyl polyoxyethylene ether, 25 parts of acrylic acid, 6 parts of maleic anhydride, initiator, sodium hydroxide, carbon disulfide and water made;
[0058] The preparation method is as follows: first put maleic acid monoacylate, allyl polyoxyethylene ether, maleic anhydride and 380 parts of water in a reaction kettle, stir and dissolve, pass nitrogen gas for 30 minutes, heat up to 75°C, and add dropwise within 1 hour A solution of 0.6 parts of sodium persulfate and 10 parts of water and acrylic acid, heat preservation reaction for 4 hours, then lower the temperature to below 20°C, in molar ratio n(maleic acid monoacylate):n(NaOH):n(CS 2 )=1:5:3 Add NaOH first, then slowly add CS dropwise 2 , reacted at 25° C. for 3 hours, and then reacted at 45° C. for 2 hours to obtain the chelating dispersant; the chelating dispersing agent is shown in molecular formula (A).
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Embodiment 2
[0064] A kind of organosilicon emulsion, its preparation method is:
[0065] a. In a dry four-necked flask equipped with a thermometer and a stirrer, add 6 parts of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane, 42 parts of octamethylcyclotetra Siloxane, while stirring, the temperature was raised to 70°C, and 0.15% of trifluoromethanesulfonic acid (CF 3 SO 3 H), insulation reaction 6h, add anhydrous Na after reaction finishes 2 CO 3 Stir and neutralize until the pH is 6-7 to obtain double-terminated alkenyl siloxane, as shown in the above reaction formula (2);
[0066] b. Take 40 parts of double-terminal alkenyl siloxane, and add it to 3 parts of dodecyl trimethyl ammonium chloride, 2 parts of octadecyl trimethyl ammonium chloride, 4 parts of fatty alcohol polyoxyethylene ether (O-15) in 256 parts of water, stir to dissolve and emulsify, heat up to 75-78°C, add dropwise 10 parts of 3% sodium persulfate aqueous solution and 18 parts of polymerizable quaternary ammonium salt mon...
Embodiment 3
[0069] Polyester cotton plain cloth T / C 65% / 35% 45×45 / 133×94, 135g / m 2
[0070] Short-process dyeing and finishing process of polyester-cotton fabrics, including alkali-oxygen one-step pretreatment, disperse / reactive one-bath dyeing, post-finishing,
[0071] Alkali-oxygen one-step pretreatment: immerse the polyester-cotton fabric in the pretreatment solution at a bath ratio of 1:8, and treat it at 100°C for 45 minutes;
[0072] Pretreatment solution, composed of 3g / L high-efficiency scouring agent TF-188, 3g / L chelating dispersant, 5g / L hydrogen peroxide, 2g / L oxygen bleaching stabilizer TF-122B, 10g / L NaOH and water; chelating dispersing Agent is prepared by embodiment 1 method;
[0073] Disperse / reactive one-bath dyeing: disperse dye X%, reactive dye Y% (owf); dispersant NNO 1g / L, Yuanming powder 55g / L; pH value 4.5-5 (adjusted with glacial acetic acid); bath ratio 1 :15, 130°C heat preservation for 40min→cooling to 80°C, adding 15g / L soda ash to fix the color for 20min, ...
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