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Tossa short flow chemical degumming method

A chemical degumming and jute fiber technology, which is applied in the direction of chemical production of bast fiber, textiles, papermaking, bleaching products, etc., can solve the problems of poor lignin removal effect and short single fiber, and achieve stable and reliable process parameters. The effect of high removal rate and short process flow

Inactive Publication Date: 2008-03-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But jute fiber has its own unique features, such as: the high content of non-cellulose components, especially the content of lignin is as high as about 15%; Residual glue binds single fibers into spinnable technical fibers; the degumming process of flax and ramie is mostly designed for impurities such as hemicellulose, and the removal effect on lignin is not good
Therefore, the degumming process of flax and ramie is not completely suitable for the degumming of jute fibers with higher lignin content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The jute used is the tip fiber with a length of about 100-150cm, which is implemented according to the following process: scouring→water washing→pickling→water washing→dehydration→bleaching→water washing→dehydration→drying, the specific process is:

[0039] (1) Cooking: ①Na 2 S7g / L

[0040] ②Na 2 SO 3 3.5g / L

[0041] ③Na 2 SiO 3 1.5g / L

[0042] ④NaOH 10g / L

[0043] ⑤Condensate of alkylphenol and ethylene oxide 0.5g / L

[0044] Temperature 85°C

[0045] Bath ratio 1:12

[0046] Time 1.5h

[0047] (2) Washing: washing at room temperature;

[0048] (3) Pickling: add sulfuric acid 1.5g / L, control the bath ratio (by weight) 1:15, keep it at room temperature for 8 minutes, and then drain;

[0049] (4) Washing: washing at room temperature;

[0050] (5) Bleaching:

[0051] ① Peroxide treatment

[0052] Add in sequence and within 8min the penetrating agent JFC1%, sodium pyrophosphate 1.5%, soda ash 6%, peracet...

Embodiment 2

[0066] The jute used is the root fiber with a length of about 100-150cm, which is carried out according to the following process: scouring→water washing→pickling→water washing→dehydration→bleaching→water washing→dehydration→drying, the specific process is:

[0067] (1) Cooking: ①Na 2 S 10g / L

[0068] ②Na 2 SO 3 5g / L

[0069] ③Na 2SiO 3 2.5g / L

[0070] ④NaOH 18g / L

[0071] ⑤Condensate of alkylphenol and ethylene oxide 1g / L

[0072] Temperature 95°C

[0073] Bath ratio 1:12

[0074] time 2h

[0075] (2) Washing: washing at room temperature;

[0076] (3) Pickling: Add sulfuric acid 2g / L, control the bath ratio (by weight) 1:15, keep it at room temperature for 10min, then drain;

[0077] (4) Washing: washing at room temperature;

[0078] (5) Bleaching:

[0079] ① Peroxide treatment

[0080] Add 1.5% of penetrating agent JFC, 1% of tetraacetylethylenediamine, 5% of soda ash, and 10% of sodium perborate according to the perce...

Embodiment 3

[0095] The jute used is cut fiber with a length of about 4-10cm, which is implemented according to the following process: scouring→water washing→pickling→water washing→dehydration→bleaching→water washing→dehydration→drying, the specific process is:

[0096] (1) Cooking: ①Na 2 S 8g / L

[0097] ②Na 2 SO 3 4g / L

[0098] ③Na 2 SiO 3 2g / L

[0099] ④NaOH 15g / L

[0100] ⑤Condensate of alkylphenol and ethylene oxide 1.5g / L

[0101] Temperature 90°C

[0102] Bath ratio 1:12

[0103] Time 1.5h

[0104] (2) Washing: washing at room temperature;

[0105] (3) Pickling: Add sulfuric acid 1.5g / L, control the bath ratio (by weight) 1:15, keep it at room temperature for 5min, and then drain;

[0106] (4) Washing: washing at room temperature;

[0107] (5) Bleaching:

[0108] ① Peroxide treatment

[0109] Add in sequence and within 6min the penetrating agent JFC1.5%, sodium phosphate 2%, soda ash 7%, sodium percarbonate 10% based on fiber ...

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Abstract

The present invention relates to a chemical degumming method of jute fiber in a short process. The technological process is kier boiling,water washing, acid washing, water washing, dehydrating, bleaching, water washing, dehydrating,and drying. The gum content and the lignin content are reduced by using the method, the hand touch is soft, the separation degree is high, the whiteness is good and difficult to turn yellow, and the spinnability and the ability of dyeing and finishing are improved.

Description

technical field [0001] The invention belongs to the field of fiber degumming, in particular to a short-flow chemical degumming method for jute fibers. Background technique [0002] Jute fiber is a natural polymer compound, which belongs to lignocellulosic fiber. Jute has excellent properties such as fast moisture absorption and dehumidification, coolness, breathability, and comfort, and is also biodegradable. But the single fiber of jute fiber is short, and feels rough, causes its spinnability to be poor, has seriously restricted the application of jute fiber in the field of textile and clothing. In recent years, due to the increasing demand for biodegradable and environmentally friendly natural fibers and the enormous pressure brought by the wide application of synthetic fibers to the traditional jute industry, researchers and textile companies in various countries are working hard to develop multifunctional, high value-added Jute textiles. [0003] The control of degumm...

Claims

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Application Information

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IPC IPC(8): D01C1/02D06L3/14D06L4/70
Inventor 蔡再生王维明俞建勇程隆棣
Owner DONGHUA UNIV
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