Short linen viscose fiber and preparation method thereof
A viscose staple fiber and viscose fiber technology is applied in the field of viscose fiber, which can solve the problems of high cooking strength, large material consumption, long time, etc., to solve the cumbersome cooking process, and solve the problems of high cooking strength and short production cycle. Effect
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Embodiment 1
[0036]A preparation method of hemp viscose staple fiber, comprising: after the hemp material is prepared, it is pretreated, washed with water, cooked, washed, beaten, desanded, concentrated, refined with alkali, bleached, acid treated, washed, and finally selected Desanding, concentration, copying, impregnation, pressing, crushing, aging, yellowing, grinding, dissolution, filtration, degassing, filtration, spinning, drawing, cutting, post-processing, drying, and packaging to make finished products, specific processes as follows:
[0037] (1) Pretreatment: After cutting and washing the hemp material, add sulfuric acid in the pretreatment tower to adjust the pH value at 2, the amount of ozone added is 3% of the relative absolute dry raw material quality, the treatment time is 10min, the pressure is 0.5MPa, and the temperature 40°C.
[0038] (2) Washing: the temperature is 50° C., the pulp quality after washing: 81.2% by mass of total cellulose, 1.8% by mass of lignin, 0.41% by ...
Embodiment 2
[0058] A preparation method of hemp viscose staple fiber, comprising: after the hemp material is prepared, it is pretreated, washed with water, cooked, washed, beaten, desanded, concentrated, refined with alkali, bleached, acid treated, washed, and finally selected Desanding, concentration, copying, impregnation, pressing, crushing, aging, yellowing, grinding, dissolving, filtering, defoaming, filtering, spinning, drawing, cutting, post-processing, drying, and packaging to make finished products.
[0059] (1) Pretreatment: After cutting and washing the hemp material, add sulfuric acid in the pretreatment tower to adjust the pH value at 3, the amount of ozone added is 1% of the relative absolute dry raw material quality, the treatment time is 20min, the pressure is 0.8MPa, and the temperature 50°C.
[0060] (2) Washing: the temperature is 60°C, the pulp quality after washing: 82.2% by mass of total cellulose, 1.9% by mass of lignin, 0.51% by mass of pectin, and 0.51% by mass of...
Embodiment 3
[0080] A preparation method of hemp viscose staple fiber, comprising: after the hemp material is prepared, it is pretreated, washed with water, cooked, washed, beaten, desanded, concentrated, refined with alkali, bleached, acid treated, washed, and finally selected Desanding, concentration, copying, impregnation, pressing, crushing, aging, yellowing, grinding, dissolving, filtering, defoaming, filtering, spinning, drawing, cutting, post-processing, drying, and packaging to make finished products.
[0081] (1) Pretreatment: After cutting and washing the hemp material, add sulfuric acid in the pretreatment tower to adjust the pH value at 2, the amount of ozone added is 2% of the relative absolute dry raw material quality, the treatment time is 15min, the pressure is 0.7MPa, and the temperature 45°C.
[0082] (2) Washing: the temperature is 55°C, the pulp quality after washing: 81.2% by mass of total cellulose, 1.8% by mass of lignin, 0.41% by mass of pectin, and 0.41% by mass of...
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