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Refining processing method for apocynum venetum fiber

A processing method and apocynum technology, which are applied in the field of hemp fiber processing, can solve the problems of large amount of chemicals used, short apocynum fibers, long time consumption, etc., and achieve environmental protection pressure reduction, good fiber strength index, and good degumming effect. Effect

Active Publication Date: 2017-01-11
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a kind of refined processing method of apocynum hemp, so as to overcome the ubiquity of the degumming method in the prior art, which takes a long time, consumes a lot of chemicals, and the prepared apocynum fiber is short, thick and brittle. Hard, low strength and other technical problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Apocynum bast raw material origin: Xinjiang

[0076] The processing method is as follows:

[0077] Apocynum bast is placed in a sealed tank, immersed in ethylenediamine with a mass percentage concentration of 40%, and continuously stirred at room temperature for 12 hours, so that the apocynum bast is infiltrated and activated;

[0078] Then, the ethylenediamine in the tank is emptied, and the activated apocynum bast through infiltration is taken out.

[0079] Put the Apocynum raw material soaked and activated by ethylenediamine directly into the steam flash explosion device, heat to make the water vapor pressure in the steam flash explosion device be 0.8MPa, and keep this pressure for 1 minute; then open the valve and release the pressure rapidly;

[0080] Collect the apocynum fiber ejected from the steam flash explosion equipment, then make cakes, put the obtained apocynum bast and the hemp cage in the degumming tank together, and pump in FeSO with a mass percentage c...

Embodiment 2

[0086] Apocynum bast raw material origin: Xinjiang

[0087] The processing method is as follows:

[0088] Apocynum bast is placed in a sealed tank, immersed in a dimethylformamide solvent with a mass percentage concentration of 60%, and continuously stirred at room temperature for 20 hours, so that the apocynum bast is infiltrated and activated;

[0089] Then, the dimethylformamide in the tank was emptied, and the activated apocynum bast was taken out.

[0090] Infiltration activation with dimethylformamide

[0091] The final apocynum raw material is directly put into the steam flash explosion device, heated to make the water vapor pressure in the steam flash explosion device be 1.2MPa, and keep this pressure for 5 minutes; then open the valve and release the pressure rapidly;

[0092] Collect the apocynum fiber ejected from the steam flash explosion equipment, then make cakes, put the obtained apocynum bast and hemp cage together in the degumming tank, and pump in the FeCl ...

Embodiment 3

[0098] Apocynum bast raw material origin: Xinjiang

[0099] Processing method: In addition to FeSO 4 The mass percentage concentration of the solution is 1%, the continuous cooking time of the alkaline degumming solution is 2 hours, the urea peroxide solution is used instead of hydrogen peroxide, dimethylacetamide is used instead of ethylenediamine, and the mass percentage concentration of the urea peroxide solution is 1.5% outside;

[0100] All the other are the same as in Example 1.

[0101] Product inspection test results:

[0102] The obtained apocynum venetiane has a residual glue rate of 4.62 percent, an average fiber length of more than 35 mm, a fiber strength of 6.2 cN / dtex and a fiber fineness of 4.0 dtex.

[0103] It should be noted that the organic amine solvent used in the present invention can also be a mixture of two or three of ethylenediamine, dimethylformamide or dimethylacetamide.

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Abstract

The invention discloses a refining processing method for an apocynum venetum fiber. The method comprises the steps of infiltrating and activating apocynum venetum bast; performing steam explosion activating treatment; caking and putting into a cage; performing directional catalytic oxidizing; chemically degumming and post-processing. Organic amine is adopted for infiltrating and activating and steam explosion activating treatment is performed, and then a ferrite solution and an activating agent are adopted for performing directional catalytic oxidization on lignin and hemicellulose; through the organic combination of a series of technical methods, such as, infiltration and activation, steam explosion, degumming and directional catalytic oxidization, the production method provided by the invention has the characteristics of good degumming effect, excellent indexes including finish fineness, length, strength and the like of the acquired apocynum venetum fiber, high quality, excellent spinning property, and the like; the chemical consumption is low; the environment-friendly pressure is low; the technical control is simple; the consumption of the public works, such as water, electricity and gas, is low, the efficiency is high and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to a processing method of hemp fiber, in particular to a refined processing method of fine-dried apocynum hemp. Background technique [0002] Apocynum, also known as wild hemp, Zeqima, red willow, oleander hemp, etc., is a perennial herbaceous plant belonging to the family Apocynaceae, widely distributed in northern China, concentrated in the Tarim River and Xinjiang Along the Kongque River, it is named for its most abundant growth in the Luobu Plain in Xinjiang. Apocynum fiber has many excellent characteristics, soft to the touch and good luster, has the luster of silk, the lightness of hemp, the softness of cotton, the ductility of velvet, and has pharmacological effects. "King of wild fibers", so it is recognized as an ideal textile fiber. [0003] Apocynum fiber is a kind of bast fiber, which is located in the bast tissue on the stem of apocynum plant, in the form of fiber bundles, and individual fibers exist alone. Apocynu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02
CPCD01C1/02
Inventor 张元明韩光亭徐颖徐维敬李洋
Owner QINGDAO UNIV
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