A method for improving the dyeing performance of superfine fiber synthetic leather base cloth
A synthetic leather base fabric, superfine fiber technology, applied in the direction of dyeing, fiber processing, textiles and papermaking, etc., to reduce environmental pollution, simple extraction method, and improve dyeing performance.
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Embodiment 1
[0031] 1) Preparation of collagen:
[0032] Add water to the gelatin, stir to swell the gelatin to obtain a gelatin solution with a mass concentration of 20%, use 1mol / L sodium hydroxide solution to adjust the pH of the gelatin solution to 8.5, and then add alkaline to the gelatin solution at 50°C Protease was stirred and hydrolyzed for 5 hours to obtain collagen; wherein, the amount of alkaline protease accounted for 1.0% of the gelatin mass;
[0033] 2) Pretreatment of microfiber synthetic leather base cloth:
[0034] Add microfiber synthetic leather base cloth into the drum, and use concentrated sulfuric acid with a mass fraction of 98% to treat the microfiber synthetic leather base cloth for 4.5 hours under the condition of liquid ratio of 3000% and temperature of 45°C to obtain Surface-modified superfine fiber synthetic leather base cloth; wherein, the consumption of concentrated sulfuric acid is 15% of the quality of superfine fiber synthetic leather base cloth;
[003...
Embodiment 2
[0041] 1) Preparation of collagen:
[0042] Add water to the gelatin, stir to swell the gelatin to obtain a gelatin solution with a mass concentration of 40%, use 1mol / L sodium hydroxide solution to adjust the pH of the gelatin solution to 9.5, and then add alkaline to the gelatin solution at 60°C Protease was stirred and hydrolyzed for 4 hours to obtain collagen; wherein, the amount of alkaline protease accounted for 1.5% of the gelatin mass;
[0043] 2) Pretreatment of microfiber synthetic leather base cloth:
[0044] Add microfiber synthetic leather base cloth into the drum, and use analytically pure formic acid to treat microfiber synthetic leather base cloth for 3.5 hours under the conditions of liquid ratio of 6000% and temperature of 55°C to obtain surface-modified Microfiber synthetic leather base cloth; wherein, the amount of formic acid is 12% of the mass of microfiber synthetic leather base cloth;
[0045] 3) Collagen modification of superfine fiber synthetic leat...
Embodiment 3
[0051] 1) Preparation of collagen:
[0052] Add water to the gelatin, stir to swell the gelatin to obtain a gelatin solution with a mass concentration of 30%, use 1mol / L sodium hydroxide solution to adjust the pH of the gelatin solution to 9, and then add alkaline to the gelatin solution at 55°C Protease was stirred and hydrolyzed for 3 hours to obtain collagen; wherein, the amount of alkaline protease accounted for 2% of the gelatin mass;
[0053] 2) Pretreatment of microfiber synthetic leather base cloth:
[0054] Add microfiber synthetic leather base cloth into the drum, and use analytically pure formic acid to treat microfiber synthetic leather base cloth for 2.5 hours under the conditions of liquid ratio of 4000% and temperature of 50°C to obtain surface-modified Microfiber synthetic leather base cloth; wherein, the amount of formic acid is 18% of the mass of microfiber synthetic leather base cloth;
[0055] 3) Collagen modification of superfine fiber synthetic leather ...
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