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High-elasticity crimpy wool with ultra-refining rate and preparation method thereof

A technology with ultra-fine rate and high elasticity, applied in the chemical post-processing of fibers, animal fibers, fiber processing and other directions, it can solve the problems of low refining efficiency and achieve a wide range of practical effects.

Pending Publication Date: 2020-09-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: some existing wool thinning materials have the defect of low thinning efficiency

Method used

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  • High-elasticity crimpy wool with ultra-refining rate and preparation method thereof
  • High-elasticity crimpy wool with ultra-refining rate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The wool fiber is pretreated in 1wt% sodium bisulfite treatment solution at 80°C to open the disulfide bonds and salt bonds between helical macromolecules, and then stretched on a stretching machine with a twist of 45 twists / m , the stretching speed is 100% / min, and the stretching rate is 80%. The wool top after stretching and shaping is carried out in 5% potassium persulfate and 2% zinc acetate solution, and then in 2% long-chain The magnesium chloride resin liquid is used for secondary setting, and after setting, it is dried and baked to obtain a fine wool top. The results show that the disulfide bonds between macromolecules of wool fibers are opened during stretching, and besides the transformation of α-helical structure into β-sheet structure, there is also the slippage of microstructure blocks. After testing, the wool fiber diameter is reduced from 22.5 μm to 18 μm, the strength of the fiber is increased from 12.7cN / tex to 14.6cN / tex, the elongation of the fiber is...

Embodiment 2

[0037] The wool fiber is pretreated in 3wt% sodium bisulfite treatment solution at 75°C to open the disulfide bonds and salt bonds between helical macromolecules, and then stretched on a stretching machine with a twist of 20 twists / m , the stretching speed is 50% / min, and the stretch rate is 100%. The wool top after stretching and shaping is carried out in 4.5% potassium persulfate and 1.5% zinc acetate solution, and then in 3% long-chain The magnesium chloride resin liquid is used for secondary setting, and after setting, it is dried and baked to obtain a fine wool top. The results show that the disulfide bonds between macromolecules of wool fibers are opened during stretching, and besides the transformation of α-helical structure into β-sheet structure, there is also the slippage of microstructure blocks. After testing, the wool fiber diameter is reduced from 22.5μm to 13.5μm, the strength of the fiber is increased from 12.7cN / tex to 20.0cN / tex, the fiber elongation is 15%, ...

Embodiment 3

[0039] The wool fiber is pretreated in 5wt% sodium bisulfite treatment solution at 70°C to open the disulfide bonds and salt bonds between the helical macromolecules, and then stretched on a stretching machine with a twist of 15 twists / m , the stretching speed is 75% / min, and the stretching rate is 90%. The wool top after stretching and shaping is carried out in 3.5% potassium persulfate and 2.5% zinc acetate solution, and then in 4% long-chain The magnesium chloride resin liquid is used for secondary setting, and after setting, it is dried and baked to obtain a fine wool top. The results show that the disulfide bonds between wool fiber macromolecules are opened during stretching, and besides the transformation of α-helical structure into β-sheet structure, there is also the slippage of microstructure blocks. After testing, the wool fiber diameter is reduced from 22.5μm to 15.8μm, the strength of the fiber is increased from 12.7cN / tex to 17.2cN / tex, the elongation of the fiber...

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Abstract

The invention discloses high-elasticity crimpy wool with ultra-refining rate and a preparation method thereof. The preparation method comprises the steps that wool fibers are placed in a pretreatmentsolution, and disulfide bond cross-linking between macromolecular chains of the wool fibers is relieved; the wool fibers are stretched; the stretched wool fibers are subjected to sizing treatment twotimes with a primary sizing solution and a secondary sizing solution; and the sized wool fibers are placed in boiling water to obtain the high-elasticity crimpy wool fibers, and the crimping elastic recovery rate ranges from 50% to 80%. According to the high-elasticity crimpy wool with ultra-refining rate and the preparation method thereof, a study method of a molecular slipping mechanism has a good effect on utilization of the high added value of the ultra-short wool or cashmere fibers.

Description

technical field [0001] The invention relates to a research method for the thinning mechanism of wool fiber, in particular to a kind of ultra-fine rate high-elastic curly wool and a preparation method thereof. Background technique [0002] Wool is an important textile raw material. It has the characteristics of good elasticity, good warmth retention, strong hygroscopicity, non-staining, and soft luster. Strong all season fabric. In recent years, with the improvement of people's quality of life requirements, wool fabrics with both warmth retention and thinness are more and more favored by consumers. Therefore, the thinning of wool fabrics has become an important research direction. Minimizing and reducing the fineness is a scientific and effective solution. The boiling water shrinkage of existing wool thinning materials is generally 12% to 40%, that is, the main mechanism of stretching thinning is caused by the transformation of α-helical macromolecular structure to β-sheet ...

Claims

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Application Information

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IPC IPC(8): D06M11/54D06M11/50D06M13/188D06M15/19D01C3/00D02G1/00D02J1/22D06M101/12
CPCD06M11/54D06M11/50D06M13/188D06M15/19D01C3/00D02G1/004D02J1/22D06M2101/12
Inventor 刘洪玲于伟东张国生潘峰李杰
Owner DONGHUA UNIV
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