Preparation method of natural plant dye
A technology of natural plant dyes and plant dyes, applied in the field of dye preparation, can solve the problems of loss of market competitiveness, improper extraction methods, high manufacturing costs, etc., and achieve the effects of pure and elegant colors, enhanced mechanical effects, and improved efficiency
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Embodiment 1
[0021] A preparation method of natural plant dye, comprising the steps of:
[0022] (1) Cleaning: Wash and dry the selected plants and crush them for later use;
[0023] (2) Mixing: Mix the crushed plants and alcohol evenly at a mass ratio of 1:15;
[0024] (3) Ultrasonic extraction: put the above mixture in an ultrasonic extraction tank, use two different frequency ultrasonic combinations to extract it, and obtain the extract after 20 minutes;
[0025] (4) Distillation: distill the obtained extract to recover alcohol;
[0026] (5) Filtration: Filter and dry the distilled liquid to obtain vegetable dyes.
[0027] Further, the surface water content of the dried plants in step (1) is 10-15%.
[0028] Further, the alcohol concentration in step (2) is 90%.
[0029] Further, the ultrasonic frequencies in step (3) are 28KHz and 35KHz respectively, and the total ultrasonic intensity is 0.7W / cm 2 .
[0030] Further, the filtration in step (5) is carried out with 120-mesh stainle...
Embodiment 2
[0035] A preparation method of natural plant dye, comprising the steps of:
[0036] (1) Cleaning: Wash and dry the selected plants and crush them for later use;
[0037] (2) Mixing: Mix the crushed plants and alcohol evenly at a mass ratio of 1:20;
[0038] (3) Ultrasonic extraction: put the above mixture in an ultrasonic extraction tank, use three different frequency ultrasonic combinations to extract it, and obtain the extract after 15 minutes for use;
[0039] (4) Distillation: distill the obtained extract to recover alcohol;
[0040] (5) Filtration: Filter and dry the distilled liquid to obtain vegetable dyes.
[0041] Further, the surface water content of the dried plants in step (1) is 12-15%.
[0042] Further, the alcohol concentration in step (2) is 95%.
[0043] Further, the ultrasonic frequencies in step (3) are 26KHz, 30KHz, and 38KHz respectively, and the total ultrasonic intensity is 1.1W / cm 2 .
[0044] Further, the filtration in step (5) is carried out wit...
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Abstract
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