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Method for fabricating fiber of regenerative bamboo cellulose

A kind of bamboo cellulose, technology of manufacture method

Inactive Publication Date: 2008-06-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] From the above two types of patents, the entire production process is long, and the raw material processing cost of viscose fiber grade bamboo pulp has become an inevitable defect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: 10Kg of sheet-like commercially available paper-making grade bamboo pulp and 100Kg of water are dropped into a 200-liter high-pressure container, soaked, stirred and mixed for 4 hours, boiled for 3 hours at a temperature of 160° C., and then extruded for dehydration. Obtain 20Kg of water-containing bamboo cellulose, wherein the weight ratio of bamboo cellulose to water is 1:1.

[0027] 200Kg concentration by weight is 50% N-methylmorpholine oxide aqueous solution in a vacuum of -9.0 × 10 4 Distill and concentrate to 120Kg under reduced pressure of Pa, so that the weight percent concentration of the above-mentioned N-methylmorpholine oxide aqueous solution is 83.3%.

[0028] Add 20Kg of the above-mentioned aqueous bamboo cellulose and 120Kg of N-methylmorpholine oxide aqueous solution with a concentration of 83.3% by weight into a 300-liter dissolving kettle with a stirring device, stir and mix evenly at 85°C, and gradually heat up to 100°C, and keep vacuu...

Embodiment 2

[0030] Embodiment 2: 10Kg and water 90Kg of sheet-like commercially available papermaking grade bamboo pulp are dropped in the high-pressure cooking pot of 200 liters, add the weight percentage concentration of 0.2Kg again and be the sulfuric acid solution of 90%, impregnate, mix after 4 hours , cooking at a temperature of 140°C for 4 hours, after cooking, neutralize with sodium hydroxide to a pH value of 7.5, wash and extrude to obtain 20Kg of water-containing bamboo cellulose, wherein the weight ratio of bamboo cellulose to water is 1:1.

[0031] 186Kg weight percent concentration is 50% N-methylmorpholine oxide aqueous solution at -9.0 * 10 4 Distill and concentrate to 110Kg under the reduced pressure condition of Pa, make the above-mentioned N-methylmorpholine oxide aqueous solution weight percentage concentration be 84.5%.

[0032] Add 20Kg of the above-mentioned water-containing bamboo cellulose and 110Kg of N-methylmorpholine oxide aqueous solution with a concentration o...

Embodiment 3

[0034] Embodiment 3: drop 10Kg of sheet-like commercially available paper-making grade bamboo pulp and 90Kg of water into a 200-liter stirred tank, after soaking and mixing for 6 hours, adjust the pH value to 5 with acetic acid, add 100g β-1,4 glucose Mixed enzymes of exoglycanase and endo-β-1,4 glucanase, the weight ratio of the two enzymes is 10:90, kept at a temperature of 50°C for 1 hour, and then heated to 90°C to make the fibers Sulfase is inactivated, and after the pH value of the mixed system is adjusted to 7.5 with sodium carbonate, the hydrous bamboo cellulose of 20Kg is obtained through washing, extrusion and dehydration, wherein the weight ratio of bamboo cellulose and water is 1:1.

[0035] 186Kg weight percent concentration is 50% N-methylmorpholine oxide aqueous solution at -9.0 * 10 4 Distill and concentrate to 110Kg under the reduced pressure condition of Pa, make the above-mentioned N-methylmorpholine oxide aqueous solution weight percentage concentration be ...

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Abstract

The present invention relates to a production method of solvent spun cellulose fiber in chemical fiber industry. It is characterized by that said production method includes the following steps: using commercial papermaking-grade bamboo pulp as raw material, making it undergo the pretreatment processes of hydrolysis, acidolysis or enzymolysis, then mixing it with N-methyl morpholine oxide aqueous solution according to a certain weight ratio, reducing pressure and dehydrating at 70-15 deg.C to obtain spinning solution; pressurizing said spinning solution, filtering said spinning solution by two prefilters, jetting by spinning nozzle, coagulating and forming in aqueous solution of N-methyl morpholine oxide, rinsing and adopting correspondent conventional process to prepare filament and staple with various specifications.

Description

technical field [0001] The invention relates to a method for manufacturing cellulose fiber by solvent method in the chemical fiber manufacturing industry, in particular to a technology for directly producing regenerated bamboo cellulose fiber by using paper-making grade bamboo pulp. Background technique [0002] my country is a country where bamboo grows very commonly and is rich in bamboo resources. It is known as the "Kingdom of Bamboo". The area of ​​bamboo forest is about 5 million hectares, accounting for 30% of the world's total. It can be used as a material in one year, so it has the function of sustainable development; in addition, bamboo cellulose fiber made of bamboo not only has the properties of cotton and wood-type cellulose fibers, but also has some unique properties, such as cool, natural Bacteriostasis, fragrance and negative ion effects, etc. Therefore, bamboo is one of the raw materials of novel cellulose fibers worthy of popularization and application. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/02
Inventor 杨革生邵惠丽胡学超冯坤
Owner DONGHUA UNIV
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