Method for preparing pulp for viscose fiber from hemp for seeds

A technology of viscose fiber and hemp, which is applied in the field of preparation of pulp for viscose fiber from hemp for seeds, can solve the problems of weakened moisture absorption and heat dissipation, adverse effects, and high content of metal ions, so as to improve the penetration ability and reduce the COD content, the effect of increasing the content of methyl fiber

Active Publication Date: 2021-07-02
山东银鹰股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned existing hemp yarn boiling and bleaching process solves the problem by adopting the boiling and bleaching bio-enzyme degumming technology, combined with sodium chlorite and hydrogen peroxide multi-stage bleaching technology. The hemp fiber is rough and hard, the fiber lignin content is high, and the wet spinnability is not good. However, the existing hemp yarn boiling and bleaching process will affect the hemp fiber through a large amount of sub...

Method used

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  • Method for preparing pulp for viscose fiber from hemp for seeds

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: A kind of preparation method of pulp for viscose fiber is prepared with hemp for seed, and this preparation method comprises the following steps:

[0042] 1) Material selection, cotton opening, and dry impurity removal: select 100% degummed hemp for seeds, use cotton opener to tear hemp for seeds, and use impurity remover to select and remove impurities, and then separate them by cyclone The machine is sent to the screw press and impregnation.

[0043] In the step 1), tear the material according to the requirement that the feeding thickness is ≤10cm and put it into the cotton opener, the feeding time of each basic unit is ≥60min, and then two sets of five-roller cleaning machines connected in series are fully opened, Make the slurry output by the impurity remover pass sequentially; then send it to the screw press and impregnate through the cyclone separator.

[0044]The purpose of the step 1) is to reduce the content of COD in the cooking black liquor and...

Embodiment 2

[0075] A preparation method for preparing pulp for viscose fiber from hemp for seeds, the preparation method comprising the following steps:

[0076] 1) Material selection, cotton opening, and dry impurity removal: select 100% degummed hemp for seeds, use cotton opener to tear hemp for seeds, open cotton and feed thickness ≤ 10cm, feeding time: ≥ 60min, and use The impurity removal machine selects and removes impurities, among which the five-roller cleaning machine is fully opened in two lanes, and then sent to the screw press and impregnation through the cyclone separator.

[0077] The purpose of the step 1) is to reduce the content of COD in the cooking black liquor and increase the content of methylcellulose.

[0078] 2) Alkali blending and impregnation: When blending alkali, control the temperature of alkali blending at 70°C, and the concentration of alkali blending is 50g / L. Before measuring the alkali concentration, it is necessary to circulate the alkali solution for a ...

Embodiment 3

[0098] A preparation method for preparing pulp for viscose fiber from hemp for seeds, the preparation method comprising the following steps:

[0099] 1) Material selection, cotton opening, and dry impurity removal: select 100% degummed hemp for seeds, use cotton opener to tear hemp for seeds, open cotton and feed thickness ≤ 10cm, feeding time: ≥ 60min, and use The impurity removal machine selects and removes impurities, among which the five-roller cleaning machine is fully opened in two lanes, and then sent to the screw press and impregnation through the cyclone separator.

[0100] The purpose of the step 1) is to reduce the content of COD in the cooking black liquor and increase the content of methylcellulose.

[0101] 2) Alkali blending and impregnation: When blending alkali, control the temperature of alkali blending at 80°C, and the concentration of alkali blending is 54g / L. Before measuring the alkali concentration, it is necessary to circulate the alkali solution for a ...

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Abstract

The invention discloses a method for preparing pulp for viscose fibers from hemp for seeds. The pulp for viscose fibers has the following indexes: the moisture content is 8-10%; the content of ash is less than or equal to 0.12%; the polymerization degree is 500 to 550; the content of methylcellulose is greater than 92.5%; the content of iron is less than or equal to 30 ppm; the whiteness is greater than or equal to 80%; and the content of small dust is less than or equal to 160 mm<2>/kg. By adopting the scheme, the permeability of the fibers can be improved, and the fibers can be leveled, so that the reaction performance of the fibers can be improved favourably.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a method for preparing pulp for viscose fibers from hemp for seeds. Background technique [0002] Hemp is a natural cellulose fiber widely used by humans. It has many advantages such as moisture absorption, breathability, heat dissipation, health care, antibacterial, anti-radiation, anti-ultraviolet, sound-absorbing, and flame-retardant effects. In the 21st century, people's requirements for textile products are no longer limited to covering the body and keeping warm. The new trend of textile clothing gradually requires the combination of beautiful appearance and health and comfort; the natural functionality of hemp fiber makes hemp textiles in the world. The status of the fashion industry is increasing day by day. The textiles spun by it are anti-mildew and antibacterial, and have excellent moisture absorption and air permeability. This makes hemp products not only ...

Claims

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Application Information

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IPC IPC(8): D21C3/02D21C3/26D21B1/02D21C3/22D21C5/00D21C9/14D21C9/16D21C9/10
CPCD21C3/02D21C3/266D21B1/02D21C3/222D21C5/005D21C9/144D21C9/163D21C9/1042D21C9/1026
Inventor 马伟良唐逢曹知朋李总臻孙海龙吕兴华郑春友
Owner 山东银鹰股份有限公司
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