Yellow lyocell fabric prepared by dyeing osmanthus fragrans with vegetable dye and preparation method of yellow lyocell fabric
A technology of vegetable dyes and sweet-scented osmanthus, applied in dyeing methods, reactive dyes, azo dyes, etc., to achieve the effect of simplifying the dyeing process, high K/S value, and reducing environmental pollution
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Embodiment 1
[0038] The preparation method of the yellow Lyocell fabric that plant dyestuff osmanthus dyes makes, described method comprises the steps:
[0039] (1) Preparation of yellow plant dye stock solution: wash and mash 10g of sweet-scented osmanthus, steam distillation at 240°C for 120 min, the amount of water steam is 150mL / min, after distillation, collect the filtrate to obtain yellow plant dye stock solution.
[0040] (2) Chemical modification: Add 1.5mL 5wt% formaldehyde aqueous solution and 0.3g 1-amino-2-sulfate ethyl sulfone ethane to 150mL yellow plant dye stock solution prepared in step (1), and use 30wt% NaOH The lye adjusts the pH of the reaction solution to 10.5, continuously stirs, the reaction time is 90 minutes, and the reaction temperature is 85°C to prepare a modified yellow vegetable dye solution.
[0041] (3) Dyeing: the modified yellow plant dye solution of step (2) is diluted with water to obtain a dyeing solution, the amount of water is 15 times that of the m...
Embodiment 2
[0048] The preparation method of the yellow Lyocell fabric that plant dyestuff osmanthus dyes makes, described method comprises the steps:
[0049] (1) Preparation of yellow plant dye stock solution: wash and mash 10g of sweet-scented osmanthus, steam distillation at 240°C for 120 min, the amount of water steam is 150mL / min, after distillation, collect the filtrate to obtain yellow plant dye stock solution.
[0050] (2) Chemical modification: Add 1.5mL 5wt% formaldehyde aqueous solution and 0.375g 1-amino-2-sulfate ethyl sulfone ethane to 150mL yellow plant dye stock solution prepared in step (1), and use 30wt% NaOH The lye adjusts the pH of the reaction solution to 10.3, continuously stirs, the reaction time is 80 minutes, and the reaction temperature is 80° C. to prepare a modified yellow vegetable dye solution.
[0051] (3) Dyeing: the modified yellow plant dye solution of step (2) is diluted with water to obtain a dyeing solution, the amount of water is 15 times that of t...
Embodiment 3
[0058] The preparation method of the yellow Lyocell fabric that plant dyestuff osmanthus dyes makes, described method comprises the steps:
[0059] (1) Preparation of yellow plant dye stock solution: wash and mash 10g of sweet-scented osmanthus, steam distillation at 240°C for 120 min, the amount of water steam is 150mL / min, after distillation, collect the filtrate to obtain yellow plant dye stock solution.
[0060] (2) Chemical modification: Add 1.5mL 5wt% formaldehyde aqueous solution and 0.25g 1-amino-2-sulfate ethyl sulfone ethane to 150mL yellow vegetable dye stock solution prepared in step (1), and use 30wt% NaOH The lye adjusts the pH of the reaction solution to 10.8, continuously stirs, the reaction time is 100 minutes, and the reaction temperature is 90°C to prepare a modified yellow vegetable dye solution.
[0061] (3) Dyeing: the modified yellow plant dye solution of step (2) is diluted with water to obtain a dyeing solution, the amount of water is 15 times that of...
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