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Solvent method for biologically preparing bamboo fiber

A bamboo fiber and bio-preparation technology, which is applied in the direction of chemical production of bast fiber, fiber treatment, fiber mechanical separation, etc., can solve the problems of reducing environmental protection, difficult black liquor treatment, environmental pollution, etc., and achieve high antibacterial rate and excellent dyeing The effect of stable performance and chemical properties

Active Publication Date: 2011-07-27
FUJIAN HAIBOSI CHMEICAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The preparation of bamboo fiber has been reported in previous published patents, and the traditional method is to use caustic soda to cook to remove the lignin and hemicellulose of bamboo. Although the fiber is made to a certain extent, it is the same as paper pulping. A large amount of black liquor is produced, which brings serious pollution to the environment because the black liquor is difficult to control
The present invention adopts solvent method to biologically prepare bamboo fiber, which can be recycled, and extracts lignin and hemicellulose from the used solvent, which reduces environmental problems. In the prior art, there is no biological preparation of bamboo fiber by solvent method. Process method

Method used

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  • Solvent method for biologically preparing bamboo fiber
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preparation example Construction

[0014] The preparation process of the method is:

[0015] (1) Bamboo is prepared into bamboo shreds; after removing the green bamboo on the surface of the bamboo, 1 ton of the freshly felled bamboo is placed in the soaking pool and soaked at room temperature for 1 month, and then the bamboo is removed from the bamboo joints and split into 10 pieces along the fiber direction. Bamboo slices ~20mm wide are air-dried, put the bamboo slices into a pressure-heatable container for heating and pressure cooking, and the steamed bamboo slices are hammered or multi-stage rolled into bamboo filaments, which are heated and pressurized. The temperature of the cooking treatment is about 190°C, and the time is 6 to 8 hours; the cooking medium used is water or an organic solvent; the cooking medium used during the cooking treatment is water or an organic solvent; the organic solvent is a weight concentration of 80 % 1,4-butanediol solution, the consumption of the organic solvent and the bamboo...

Embodiment 1

[0025] Brush the freshly cut moso bamboo green, soak it in a normal temperature pool for one month, remove the knots and split the bamboo slices, then put the bamboo slices in a high-pressure cooking pot, add 5 tons of bamboo with a weight concentration of 80% to 1 ton of dry bamboo 1. 4-butanediol aqueous solution, heating up to 190°C and cooking at constant temperature for 8 hours, let the solvent dissolve and remove impurities such as lignin and hemicellulose in bamboo, separate solid and liquid after cooking, and extract lignin with the used solvent With hemicellulose, the solvent is recovered and recycled. The bamboo chips are mechanically beaten into bamboo threads, and the bamboo threads are shaken with a hemp shaker to remove bamboo powder and bamboo yellow. The shaken bamboo powder is in powder form, and the bamboo yellow is in the form of Small blocks, the fluffed bamboo filaments become loose and clean, soaked in 1,4-butanediol aqueous solution with a weight concentr...

Embodiment 2

[0027] Green the freshly cut green bamboo, soak it in a pool at normal temperature for a month, remove the knots and split the bamboo slices, and then put the bamboo slices in a high-pressure cooking pot, add 5 tons of dry bamboo to 1 ton of bamboo with a weight concentration of 80% 1, 4-butanediol aqueous solution, heating up to 180°C and cooking at a constant temperature for 6 hours, allowing the solvent to dissolve and remove impurities such as lignin and hemicellulose in the bamboo, separating the solid and liquid after cooking, and extracting the wood with the used solvent Vegetables and hemicellulose are recycled and reused. Bamboo slices are mechanically beaten into bamboo threads, and the bamboo threads are loosened with a hemp shaking machine to remove bamboo powder and bamboo yellow. The loose bamboo powder is in powder form. The yellow is in the form of small blocks, and the fluffed bamboo filaments become loose and clean, soaked in 1,4-butanediol aqueous solution wi...

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Abstract

The invention provides a technology for preparing bamboo fiber by 1, 4-butanediol in a solvent method, which comprises the steps of preparing bamboo into bamboo filaments; soaking the bamboo filaments in the solvent and heating to remove lignin, hemicellulose and other impurities on the surface of the cellulose; preparing into coarse bamboo fibre; beating the coarse bamboo fibre, washing with water simultaneously, and then spin-drying through a centrifuge; bleaching and cleaning; conducting mellowing to the bamboo fiber; soft-impressing the bamboo fiber; stowing fermentation and curing, and finally obtaining the bamboo fiber with spinnability after opening and carding. The solvent adopted by the invention has high boiling point and stable chemical property and can be recycled; the whole technological process does not generate black liquor and seriously pollute the environment, and belongs to clean techniques; the obtained natural bamboo fiber has the remarkable advantages of moisture absorption, quick dry, coolness, comfort, antibacterium, deodorization and the like; and the method has low cost and good economic benefit and environmental protection benefit.

Description

technical field [0001] The invention belongs to the technical field of new materials for textiles, and more specifically relates to a solvent method for biologically preparing bamboo fibres. Background technique [0002] The preparation of bamboo fiber has been reported in previous published patents, and the traditional method is to use caustic soda to cook to remove the lignin and hemicellulose of bamboo. Although the fiber is made to a certain extent, it is the same as paper pulping. Produce a large amount of black liquor, because black liquor is difficult to control, brings serious pollution to the environment. The present invention adopts solvent method to biologically prepare bamboo fiber, which can be recycled, and extracts lignin and hemicellulose from the used solvent, which reduces environmental problems. In the prior art, there is no biological preparation of bamboo fiber by solvent method. process method. Contents of the invention [0003] The object of the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01B1/10D01C1/02B27L11/08
Inventor 张新聪黄新亮金标
Owner FUJIAN HAIBOSI CHMEICAL TECH
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