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Chemical degumming technique for pineapple leaf fiber

A technology of pineapple leaf fiber and chemical degumming, which is applied in the direction of producing bast fiber by chemical method, can solve the problems of inability to apply production, the fiber is not soft enough, and there is no degumming technology of pineapple leaf fiber, etc., which is beneficial to spinning and fiber fineness. High, consistent effect of fiber molecular length

Inactive Publication Date: 2009-08-12
AGRI MACHINERY INST CHINESE TROPICAL ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the 1990s, China Textile University has also carried out systematic research and exploration on the properties, structure, degumming, and spinning of pineapple leaf fibers. However, the degummed fibers are not soft enough and can only be blended with other fibers. Only 10 metric counts of yarn can be spun, which is still far from the current market demand for hemp products of 20-40 metric counts, and cannot be used in production
[0005] Therefore, so far, there is no pineapple leaf fiber degumming process technology suitable for production both at home and abroad.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Chemical degumming technique for pineapple leaf fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 Shown, a kind of pineapple leaf fiber chemical degumming process is characterized in that adopting the following steps:

[0026] (1) The fibrils are divided into cages, and each cage is filled with 300kg of fibrils;

[0027] (2) Pre-soaking acid: put 300kg of fibrils into H with a concentration of 2.5g / L 2 SO 4 In the solution, the bath ratio is 1:15, soak at room temperature for 40min;

[0028] (2) Scouring: Put the fibrils into 4500kg of mixed solution, keep the pressure at 0.1MPa, and hold the pressure for 4 hours. The mixed solution is prepared by mixing liquid caustic soda with a concentration of 30%, trisodium phosphate and water glass. Wherein, the content of liquid caustic soda is 10g / L, the content of trisodium phosphate is 0.4g / L, and the content of water glass is 2g / L;

[0029] (3) Washing: rinse the scorched fiber with clear water until the pH value is 7;

[0030] (4) pickling: the fibrils are put into H2 with a concentration of 2.5g / L...

Embodiment 2

[0039] (1) The fibrils are divided into cages, and each cage is filled with 300kg of fibrils;

[0040] (2) Pre-soaking acid: put 300kg of fibrils into H at a concentration of 3.0g / L 2 SO 4 In the solution, the bath ratio is 1:16, soak at room temperature for 45min;

[0041] (3) Scouring: Put the fibrils into 4800kg of mixed solution, keep the pressure at 0.13MPa, and hold the pressure for 4.2 hours. The mixed solution is prepared by mixing liquid caustic soda with a concentration of 30%, trisodium phosphate and water glass. Wherein, the content of liquid caustic soda is 11g / L, the content of trisodium phosphate is 0.5g / L, and the content of water glass is 2.3g / L;

[0042] (4) Washing: rinse the scorched fiber with clear water until the pH value is 7;

[0043] (5) pickling: the fibrils are put into H2 with a concentration of 3.0g / L 2 SO 4 In the solution, the bath ratio is 1:16, soak for 20 minutes at room temperature;

[0044] (6) Denaturation: Put the fibrils into 4800...

Embodiment 3

[0052] (1) The fibrils are divided into cages, and each cage is filled with 300kg of fibrils;

[0053] (2) Pre-soaking acid: put 300kg of fibrils into H with a concentration of 3.5g / L 2 SO 4 In the solution, the bath ratio is 1:17, soak at room temperature for 50min;

[0054] (3) Scouring: Put the fibrils into 5100kg of mixed solution, keep the pressure at 0.15MPa, and hold the pressure for 4.5 hours. The mixed solution is prepared by mixing liquid caustic soda with a concentration of 30%, trisodium phosphate and water glass. Wherein, the content of liquid caustic soda is 12g / L, the content of trisodium phosphate is 0.6g / L, and the content of water glass is 2.5g / L;

[0055] (4) Washing: rinse the scorched fiber with clear water until the pH value is 7;

[0056] (5) pickling: the fibrils are put into H2 with a concentration of 3.5g / L 2 SO 4 In the solution, the bath ratio is 1:17, soak for 20min at room temperature;

[0057] (6) Denaturation: put the fibrils into 5100 kg o...

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Abstract

The invention discloses an ananas hemp chemical degumming process. The process is characterized in that: the process comprises the following steps of ananas hemp piecing out and caging, pre-pickling, boiling, washing, pickling, denaturation, acid washing, washing, lignin removal, washing, greasing and drying procedures. The boiling comprises the following steps: adding the fibril into a 30 percent mixed liquor which is prepared from liquid alkali, trisodium phosphate and water glass and has a weight 15 to 17 folds of that of the fibril, keeping the pressure of 0.1 to 0.15 MPa for 4 to 4.5 hours, and taking out the fibril and washing the fibril by water. The mixed liquor used for boiling the fibril comprises 10 to 12 g / L of the liquid alkali, 0.4 to 0.6 g / L of the trisodium phosphate and 2 to 2.5 g / L of the water glass. The liquid alkali boiling eliminates non-cellulose substances in the ananas hemp, and makes the ananas hemp have a high capillary penetration action. The fiber molecules have relatively uniform lengths; the fiber fineness is high and reaches 550 yarns; and therefore the ananas hemp is suitable for spinning.

Description

technical field [0001] The invention relates to a fibril degumming process in the application field of textile technology, in particular to a chemical degumming process for pineapple leaf fibers. Background technique [0002] Pineapple leaf fiber is a fiber extracted from pineapple leaves and belongs to vein fiber. Relevant studies have shown that after deep processing, this fiber has higher strength than cotton, white appearance, soft and smooth, and feels like silk like linen. It can be blended with natural fibers or synthetic fibers. The fabric is easy to print and dye, sweat-absorbent and breathable, and crisp. It is suitable for making all kinds of medium and high-grade suits, shirts, dresses, ties and various decorative fabrics. In addition, pineapple leaf fiber also has good antibacterial and antibacterial properties. [0003] At present, the utilization of pineapple leaf fiber abroad is still in the research and development stage. In the Philippines, the method of...

Claims

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Application Information

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IPC IPC(8): D01C1/02
Inventor 李明福连文伟张劲邓干然焦静欧忠庆邓怡国黄涛
Owner AGRI MACHINERY INST CHINESE TROPICAL ACAD OF SCI
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