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Efficient production and manufacturing method and equipment for lyocell fibers

A manufacturing method and fiber technology, applied in the field of high-efficiency production and manufacturing of lyocell fibers, can solve the problems of less production technology

Pending Publication Date: 2021-05-11
山东鸿泰鼎新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Lyocell fiber production technology is currently a relatively mature solvent-based regenerated cellulose fiber industrial production technology. Many domestic and foreign companies, universities and research institutes have related research, but relatively few can truly master the complete production technology of lyocell fiber. , as a foreign enterprise that has monopolized the production technology of lyocell fiber for a long time, it has mastered a series of the most advanced lyocell fiber related technologies such as lyocell fiber production equipment and production technology, breaking through the blockade of foreign enterprises on the production process and equipment , developed a set of mature and reliable lyocell fiber production process and equipment, which will effectively promote the development of new fiber materials

Method used

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  • Efficient production and manufacturing method and equipment for lyocell fibers

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: as figure 1As shown, a high-efficiency production and manufacturing equipment for lyocell fiber, the splitter or tractor is connected to the coarse powder machine, the coarse powder machine is connected to the fine powder machine through the fan, the fine powder machine is connected to the silo, and the silo is connected to the weighing belt device , the weighing belt device is connected to the premixer, the premixer is connected to the mixing silo, the mixing silo is connected to the thin film evaporator through the screw pump, the evaporator is connected to the discharge pump, the discharge pump is connected to the glue filter, and the glue filter is connected Spinning metering pump, the spinning metering pump is connected to the spinning assembly, the spinning assembly is connected to the coagulation bath, the coagulation bath is respectively connected to the coagulation bath and the winding machine, the coagulation bath is respectively connected to the ...

Embodiment 2

[0038] Embodiment 2: as figure 1 As shown, a high-efficiency manufacturing method of lyocell fiber has developed a set of mature and reliable lyocell fiber production technology, which reduces production costs and investment costs, promotes the localization process of lyocell fine fibers, and then effectively Promote the development of new fiber materials in China.

[0039] Step 1), solvent selection:

[0040] Due to the rigid molecular chains and intramolecular and intermolecular hydrogen bond networks of cellulose make it insoluble in water and traditional organic solvents, the choice of solvent is very important for the preparation of cellulose fibers.

[0041] Diethylene glycol reacts with ammonia to generate morpholine, which is then methylated and hydrogen peroxide (H 2 o 2 ) oxidation, an aliphatic cyclic tertiary amine oxide (namely NMMO) can be obtained. Due to the strong polarity of the N-O bond, it can break the hydrogen bonds between cellulose molecules, form h...

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Abstract

The invention belongs to the technical field of fiber production and manufacturing, and relates to an efficient production and manufacturing method and equipment for lyocell fibers. A spinning stock solution prepared by dissolving is added into a screw extruder, is sheared and dissolved at a certain temperature and then is sprayed out after passing through a filter, a static mixer, a metering pump and a spinning assembly; sprayed tows are oriented and stretched in air and then enter a coagulating bath; due to solvent diffusion, the solvent concentration is reduced, cellulose is separated out, and the tows are coagulated and formed; then water washing, oiling and drying post-treatment procedures are carried out; and next, inspecting and packaging are performed to obtain short fibers.

Description

technical field [0001] The invention belongs to the technical field of fiber production and manufacture, and relates to a method and equipment for efficient production and manufacture of lyocell fibers. Background technique [0002] Cellulose is the main component of plant cell walls and can be derived from trees, cotton, hemp and other plants. It is widely distributed in nature and is inexhaustible. Generally speaking, most organic substances containing hydroxyl groups are easily soluble in water, such as alcohol, glucose, etc., but cellulose is insoluble in water and most organic solvents. This is because the molecular weight of cellulose is generally large, ranging from several hundred to tens of thousands, and it is easy to form intramolecular and intermolecular hydrogen bonds. This force will cover a part of the affinity of hydroxyl groups for water, making cellulose insoluble. Soluble in water or insoluble in common organic solvents. [0003] Due to the depletion of ...

Claims

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Application Information

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IPC IPC(8): D01D5/06D01D1/02D01D13/00D01D5/14D01D5/253D01F2/00
CPCD01D5/06D01D1/02D01D13/00D01D5/14D01D5/253D01F2/00
Inventor 王培荣
Owner 山东鸿泰鼎新材料科技有限公司
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