Method for dyeing modified cellulose fabrics by green walnut epicarp pigment
A technology of cellulose fiber and walnut exocarp, applied in the direction of dyeing, fiber treatment, plant fiber, etc., can solve the problems of low fixation rate and dyeing rate of fiber fabrics, non-bright fabric color, low color fastness, etc., to achieve The dyeing process is simple and easy, it can treat skin itching and swelling, and the dyeing quality is good
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[0049] Example 1 Dyeing of modified cotton fabric
[0050] ① Modification of cotton fabric
[0051] The modifier is: 3-chloro-2-hydroxytrimethylammonium chloride
[0052] Mix the cotton fabric with water in a mass ratio of 1:30, add modifier and NaOH, heat up to 70℃ at room temperature at a heating rate of 2℃ / min, react at 70℃ for 50 minutes with constant stirring; Cotton fabrics are washed with hot water: 45℃ for 10 minutes→cold water washing→pickling: washing with a mass-volume concentration of 2g / LHAC aqueous solution for 2min→washing to neutral→drying: 80℃, 1h; among them, the modifier is per unit Add 50g to 1L water to calculate; NaOH to add 15g to 1L water to calculate;
[0053] ② Extraction of pigment from the outer peel of green walnut
[0054] Extractant: NaOH aqueous solution with a mass-volume concentration of 16g / L
[0055] The green walnut exocarp powder (particle size 40 mesh) was mixed with a mass-volume concentration of 16g / L NaOH aqueous solution at a mass ratio of 1:1...
Example Embodiment
[0062] Example 2 Dyeing of modified linen fabric
[0063] ① Modification of linen fabric
[0064] The modifier is: 3-chloro-2-hydroxytrimethylammonium chloride
[0065] Mix the linen fabric with water in a mass ratio of 1:30, add modifier and NaOH, heat up to 75°C at room temperature at a heating rate of 2°C / min, react at 75°C for 50 minutes with constant stirring; Linen fabrics are washed with hot water: 45°C for 10 minutes→cold water washing→pickling: washing with a mass-volume concentration of 2g / LHAC aqueous solution for 2 minutes→washing to neutral→drying; where the modifier is calculated by adding 52g per 1L of water ; NaOH is calculated by adding 17g per 1L of water;
[0066] ② Extraction of pigment from the outer peel of green walnut
[0067] Extractant: NaOH aqueous solution with a mass-volume concentration of 16g / L
[0068] The green walnut exocarp powder (particle size 40 mesh) was mixed with a mass-volume concentration of 16g / L NaOH aqueous solution at a mass ratio of 1:15,...
Example Embodiment
[0075] Example 3 Dyeing of modified viscose fabric
[0076] ①Modification of viscose fabric
[0077] The modifier is: 3-chloro-2-hydroxytrimethylammonium sulfate
[0078] Mix the viscose fabric with water at a mass ratio of 1:30, add modifier and NaOH, heat up to 65°C at room temperature at a heating rate of 2°C / min, react at 65°C for 55 minutes with constant stirring; after modification The viscose fabric is washed with hot water: 45℃ for 10 minutes→cold water washing→pickling: washing with a mass-volume concentration of 2g / LHAC aqueous solution for 2min→washing to neutrality→drying; among them, the modifier is added per 1L of water 52g calculation; NaOH is calculated by adding 16g per 1L of water;
[0079] ② Extraction of pigment from the outer peel of green walnut
[0080] Extractant: NaOH aqueous solution with a mass-volume concentration of 16g / L
[0081] The green walnut exocarp powder (particle size 40 mesh) was mixed with a mass-volume concentration of 16g / L NaOH aqueous solutio...
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