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Short-term flax retting degumming process

A degumming and flax technology, which is applied in the direction of producing bast fiber by chemical method, can solve the problem of high production cost of enzymatic degumming, and achieve the effect of meeting environmental protection, facilitating industrial production, and avoiding large-scale emissions

Active Publication Date: 2015-11-25
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the basis of enzymatic degumming, the short-time impregnation process can reduce the amount of enzyme preparation, thereby solving the problem of high production cost of enzymatic degumming, and is conducive to promoting the industrial production of enzymatic degumming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Harvested raw flax stems were processed with a roller compactor to break the epidermis, rinsed with water, and soaked in water for 9 hours at a water bath ratio of 1:20 (w / v). Put the pretreated raw flax stems in water, soak for 20 minutes, and drench for 1 minute to remove excess water. The measured water consumption is 33.4%. Insulate at 30°C for degumming. After 96 hours, the degumming was completed. Rinse with water repeatedly to remove the degumming solution, and heat and dry at 80°C to obtain flax fibers.

[0019] The control experiment carried out at the same time did not adopt the short-time dipping process, and the degumming completion time was 96 hours.

Embodiment 2

[0021] Harvested raw flax stems were washed with water and soaked in water for 10 hours at a water bath ratio of 1:20 (w / v). The pretreated raw flax stems were placed in 4 g / L alkaline pectinase enzyme preparation solution added with 0.2% ammonium oxalate, soaked for 10 minutes, and drenched for 30 seconds, and the consumption of enzyme solution was measured to be 26.7%. Insulated at 45°C for degumming. After 48 hours, the degumming was completed. Rinse repeatedly with water to remove the enzyme solution, heat and dry at 80°C to obtain flax fiber.

[0022] The control experiment carried out at the same time did not adopt the short-time dipping process, and the degumming completion time was 40 hours.

Embodiment 3

[0024] Harvested raw flax stems were washed with water and soaked in water for 10 hours at a water bath ratio of 1:20 (w / v). The pretreated flax raw stems were placed in water added with 2g / L urea, soaked for 30 minutes, and drenched for 30 seconds. The consumption of urea aqueous solution was measured to be 28.4%. Insulate at 35°C for degumming. After 100 hours, the degumming was completed. Rinse repeatedly with water to remove the degumming solution, and heat and dry at 100°C to obtain flax fibers.

[0025] The control experiment carried out at the same time did not adopt the short-time dipping process, and the degumming completion time was 96 hours.

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Abstract

The invention relates to a short-term flax retting degumming process, relating to the technical field of flax degumming. The method provided by the invention comprises the following steps: retting a pretreated flax straw into an adhesive removing liquid for a short time, then taking the flax straw out and leaching out unnecessary adhesive removing liquid and carrying out heat preservation and degumming; and cleaning with water and drying to obtain a flax fiber after degumming is finished. The short-term retting process can be used for reducing the degumming liquid dosage by 70%. Compared with the existing warm water retting flax degumming method, the method provided by the invention can be used for greatly reducing the water pollution and air pollution problems caused by retting liquid waste discharge, and is applied to enzymatic degumming with good prospect; on the basis of keeping the advantages such as controllable enzymatic degumming fiber composition and structure and mild reaction condition and the like, due to reduction of the dosage of enzyme liquid, the method can be used for solving the problem of high enzyme preparation cost which limits the enzymatic degumming industrialized application.

Description

technical field [0001] The invention relates to the field of flax degumming, in particular to a short-time dipping flax degumming process. Background technique [0002] Known as the "fiber queen", flax is a high-quality natural plant fiber. The history of being used by humans for textiles can be traced back to ancient Egypt. Linen fabric has excellent characteristics such as fast moisture absorption and heat dissipation, good air permeability, antibacterial and antiseptic, and antistatic. To obtain spinnable flax fiber, it must be degummed. Degumming refers to the destruction of the glue that connects the bast fiber bundles with the surrounding tissue, so that the flax fibers located in the phloem are separated from the xylem, and non-cellulose substances (such as: pectin, hemicellulose and lignin, etc.) Silky mature flax fibers. Degumming is a key link in flax processing, and the degumming effect directly affects the subsequent flax processing processes such as beating a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
Inventor 刘晓兰王路田英华郑喜群
Owner QIQIHAR UNIVERSITY
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