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Process for producing sisal fiber

A technology of sisal fiber and sisal, which is applied in the direction of fiber processing, fiber mechanical separation, chemical method to produce bast fiber, etc., can solve the problems of small elasticity and elongation, high glue content and high rigidity of sisal fiber, and achieve The effect of improving fineness and softness

Inactive Publication Date: 2008-10-29
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the high glue content of sisal fiber, especially the high lignin content, the fiber breaking strength is high, the stiffness is high, and the elasticity and elongation are small, so the spinnability is poor and the yarn formation is uneven

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Select good sisal leaves from the Agave plant, cut them off, and scrape off the mesophyll jelly of sisal by mechanical tapping or rolling to achieve efficient separation of components and effective removal of part of the lignin , hemicellulose and pectin to obtain fiber raw materials; acid pre-impregnation, water washing, alkali boiling, water washing, dehydration, fluffing, oiling, re-dehydration, fluffing, and drying are carried out on the fiber raw materials. After making the degummed sisal fiber, with the method of testing the fineness, breaking strength and softness of the jute fiber, the measured sisal fiber fineness is 1400 public branches, the breaking strength is 6cN / dtex, and the softness is 55 twists / 25cm .

[0024] in:

[0025] 1. Acid pre-impregnation: put the fiber raw material obtained after mechanical knocking into a sulfuric acid solution pot with a sulfuric acid concentration of 0.5g / L, the temperature is 80°C, the weight ratio of fiber raw material t...

Embodiment 2

[0030] Using exactly the same steps and testing methods as in Example 1, the fineness of the degummed sisal fiber obtained was 1700 metric, the breaking strength was 6.5 cN / dtex, and the softness was 62 twists / 25cm.

[0031] in:

[0032] 1. Acid pre-impregnation: put the fiber raw material obtained after mechanical knocking into a sulfuric acid solution pot with a sulfuric acid concentration of 1.5g / L, the temperature is 60°C, the weight ratio of fiber raw material to sulfuric acid solution is 1:10, and keep 1 Hour.

[0033] 2. Put the fiber raw material washed with circulating water and have a pH value of 6.8 to 7.2 in the cooking pot, add 10g / L sodium hydroxide solution, the weight ratio of fiber raw material to sodium hydroxide solution is 1:16, Under normal pressure, cook for 6 hours.

[0034] In the alkali boiling process, taking the weight of the sisal fiber raw material as 100%, add 2% of sodium tripolyphosphate, 6% of water glass, 8% of fatty alcohol polyoxyethylene ...

Embodiment 3

[0037] Using exactly the same steps and test methods as in Example 1, the sisal fiber obtained after degumming was 1700 males, the breaking strength was 4.5cN / dtex, and the softness was 48 twists / 25cm.

[0038] in:

[0039] 1. Acid pre-impregnation: put the fiber raw material obtained after mechanical knocking into a sulfuric acid solution pot with a sulfuric acid concentration of 0.5g / L, the temperature is 30°C, the weight ratio of fiber raw material to sulfuric acid solution is 1:15, and keep 1 Hour.

[0040] 2. Put the fiber raw material washed with circulating water and have a pH value of 6.8 to 7.2 in the cooking pot, add 4g / L sodium hydroxide solution, the weight ratio of fiber raw material to sodium hydroxide solution is 1:13, Under the pressure of 0.2MPa, cook for 3 hours.

[0041] In the alkali boiling process, taking the weight of the sisal fiber raw material as 100%, add 3% of sodium tripolyphosphate, 5% of water glass, 3% of fatty alcohol polyoxyethylene ether wi...

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PUM

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Abstract

The method for preparing sisal fiber is characterized in that the method comprises the following steps: (1) scraping colloid in sisal leaf pulp by mechanical knocking or rolling, and removing partial lignin, hemicellulose and pectin therein; (2) pre-soaking fiber material in sulfuric solution at 30 to 80 DEG C for 1 to 3 h; (3) cleaning with circulating water to adjust pH value to 6.8 to 7.2; (4) adding the fiber material in a boiler with pressure of 0.1 to 0.2 MPa, and boiling with sodium hydroxide solution for 2 to 6 h; (5) cleaning with circulating water to adjust pH value to 6.8 to 7.2; and (6) post-treating to obtain sisal fiber. The method has the advantages that the fineness and the flexibility of sisal fiber prepared by the method are improved greatly in comparison with unprocessed crude sisal.

Description

technical field [0001] The invention relates to a preparation method of sisal fiber. Background technique [0002] Sisal, also known as sisal, is a kind of agave hemp, belonging to the genus Agave Linnaeus of the family Agavaceae. It is named for its shape resembling a sword. It is native to Central America and has a cultivation history of more than 80 years in my country. Sisal fiber is a vascular bundle fiber taken from sisal leaves. The fiber is white in color, tough in texture, full of elasticity, strong in tension, resistant to friction, not easy to break, and has less gum and is not easy to slip. The average pulling force is generally 77-87 kg. Under water-wet conditions, the fiber tension increases by about 10-15%. As an easily available renewable resource, sisal fiber has attracted widespread attention. [0003] At present, only the patent CN01106419 disclosed by the Textile Research Institute of Wuhan University of Science and Technology is disclosed in the dome...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/02D01B1/14
Inventor 郁崇文傅佳佳张元明吴苏明
Owner DONGHUA UNIV
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