Method for preparing cellulose viscose by employing sweet Chinese sorghum pole

A viscose fiber and sweet sorghum technology, applied in the textile field, can solve problems such as shortage of viscose fiber raw materials, and achieve the effects of alleviating the shortage of viscose fiber raw materials, good whiteness and high cellulose content

Inactive Publication Date: 2007-09-19
CHTC HELON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by this invention is to provide a kind of method that adopts sweet sorghum stalk to prepare viscose fiber, can use sweet sorghum stalk as raw...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Using sweet sorghum stalks as raw materials, it goes through preparation, cooking, feeding, washing, sand removal, concentration, chloralkaliization, sodium hypochlorite bleaching, washing, concentration, copying, dipping and pressing, aging, yellowing, grinding, dissolving, mixing, filtering , defoaming, filtering, spinning, combined drafting, post-processing and other steps to produce viscose fiber, of which

[0010] Cooking: Alkali rate, calculated as NaOH, is 20% of dry sweet sorghum stalks, sulfide degree 15%, cooking aid sodium dodecyl sulfonate, dosage is 0.8% of dry sweet sorghum stalks, anthraquinone The dosage is 0.05% of dry sweet sorghum stalks, and the liquid ratio is 1:2.5.

[0011] Cooking: Cool the steamed balls with sweet sorghum stalks and cooking liquid for 10 minutes, heat up for 25 minutes at a time, pressure 0.30±0.03Mpa, small steam release for 9 minutes, and the residual pressure in the steamed balls is normal pressure, the second heating time i...

Embodiment 2

[0022] Production steps are with embodiment one, wherein

[0023] Cooking materials: the alkali rate is calculated as NaOH, which is 30% of the dry sweet sorghum stalk, the degree of vulcanization is 25%, the cooking aid sodium dodecylsulfonate, the dosage is 1.0% of the dry sweet sorghum stalk, anthracene The dosage of quinone is 0.03% of the dry sweet sorghum stalk, and the liquid ratio is 1:3.

[0024] Cooking: Cool the steamed balls with the sweet sorghum stalk raw materials and the cooking liquid for 15 minutes, heat up for 20 minutes at a time, pressure 0.30±0.03Mpa, and steam for 10 minutes at a time, and the residual pressure in the steamed balls is normal pressure, the second heating time is 30 minutes, the pressure is 0.50±0.03Mpa, the second small steam release time is 17 minutes, the residual pressure in the steaming ball is 0.30±0.03Mpa, the third heating time is 25 minutes, the pressure is 0.65~0.70Mpa, and the temperature is 170℃ , the holding time is 100 minut...

Embodiment 3

[0034] Production steps are with embodiment one, wherein

[0035] Cooking materials: Alkali rate is calculated as NaOH, which is 35% of dry sweet sorghum stalks, 30% of vulcanization degree, cooking aid sodium dodecylsulfonate is 2.3% of dry sweet sorghum stalks, anthraquinone It is 2% of dry sweet sorghum stalks, and the liquid ratio is 1:4.5.

[0036] Cooking: Cool the steamed balls with the sweet sorghum stalk raw materials and the cooking liquid for 20 minutes, heat up for 15 minutes at a time, pressure 0.30±0.03Mpa, and steam for 12 minutes at a time, and the residual pressure in the steamed balls is normal pressure, the second heating time is 25 minutes, the pressure is 0.50±0.03Mpa, the second small steam release time is 17 minutes, the residual pressure in the steaming ball is 0.30±0.03Mpa, the third heating time is 20 minutes, the pressure is 0.55~0.60Mpa, and the temperature is 160℃ , holding time 80 minutes. The degree of polymerization of the cooked pulp is 580, ...

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Abstract

The invention discloses a method for preparation of viscose fiber using sweet sorghum stalk. The cellulose pulp of sweet sorghum stalk is made by using sweet sorghum stalk as raw material. The viscose fiber is produced by cellulose pulp of sweet sorghum stalk. The steps of preparing viscose fiber using sweet sorghum stalk are as follow: stock, cooking, discharge, dressing by washing, desanding, chlorination, basification, bleeching by sodium hypochlorite, washing, condensing, paper making, dipping, compression, aging, etiolation, grinding, dissolution, blending, filtrating, debubbling, filtrating, spinning, drafting, post-processing and etc. The invention can effectively removed the impurities in the sweet sorghum stalk, therefore a high-quality viscose fiber of sweet sorghum stalk is obtained, with high cellulose content, good whiteness, lower impurity contents of pentose, crozzle and so on.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for preparing viscose fibers by adopting sweet sorghum stalks. Background technique [0002] With the development of people's living standards, people's demand for textile fibers is increasing, and viscose fibers account for a considerable proportion. At present, the raw materials used to produce viscose fiber are mainly broad-leaved wood, coniferous wood or cotton linters. The demand for cotton linters has greatly increased, leading to unprecedented tension in the main raw materials for viscose fibers. Sweet sorghum is currently an important economic crop with a large planting area. It not only contains a large amount of sugar, but also has a high sugar yield. It is mostly used by people to produce sugar, and sweet sorghum stalks also contain a large amount of fiber. Its content can reach 14-18%. It is a good raw material for producing viscose fiber pulp. The yield o...

Claims

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Application Information

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IPC IPC(8): D01F2/08D01C1/02D06L3/08D06L4/23
Inventor 王乐军王东桑洪波
Owner CHTC HELON
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