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A kind of preparation method of cyclodextrin composite modified polyurethane elastic fiber

A polyurethane elasticity and cyclodextrin technology, which is applied in the field of preparation of cyclodextrin composite modified polyurethane elastic fibers, can solve problems such as no reports of modification technology, and achieve the effect of good thermal stability

Inactive Publication Date: 2017-06-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, so far, the use of cyclodextrin complexes in polyurethane elastic fiber modification technology has not been reported

Method used

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  • A kind of preparation method of cyclodextrin composite modified polyurethane elastic fiber
  • A kind of preparation method of cyclodextrin composite modified polyurethane elastic fiber
  • A kind of preparation method of cyclodextrin composite modified polyurethane elastic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Fully grind 100 g of β-cyclodextrin and 5 g of polyethylene glycol (molecular weight: 1000) at 30° C. for 1 hour to obtain a β-cyclodextrin / polyethylene glycol complex.

[0024] 2. Dissolve 100g of β-cyclodextrin / polyethylene glycol complex in 150g of N,N-dimethylacetamide under the condition of 30℃ under mechanical stirring to form β-cyclodextrin / polyethylene glycol Ethylene glycol complex solution, cooled to room temperature.

[0025] 3. Add 200g of β-cyclodextrin / polyethylene glycol complex solution to 20Kg of stable polyurethane spinning stock solution with a solid content of 32% at 20°C. After aging, filtering and defoaming, dry process For spinning, the gas temperature in the tunnel is 250° C., and the spinning speed is 800 m / min to obtain 40D polyurethane elastic fibers.

Embodiment 2

[0027] 1. Fully grind 120 g of α-cyclodextrin and 10 g of polyethylene glycol (molecular weight: 2000) at 40° C. for 2 hours to obtain a β-cyclodextrin / polyethylene glycol complex.

[0028] 2. Dissolve 130g of α-cyclodextrin / polyethylene glycol complex in 400g of N,N-dimethylacetamide with mechanical stirring at 40°C to form α-cyclodextrin / polyethylene glycol Ethylene glycol complex solution, cooled to room temperature.

[0029] 3. Add 300g of α-cyclodextrin / polyethylene glycol complex solution to 20Kg of stable polyurethane spinning stock solution with a solid content of 33% at 20°C. After aging, filtering and defoaming, dry process For spinning, the gas temperature in the tunnel is 250° C., and the spinning speed is 850 m / min to obtain 40D polyurethane elastic fibers.

Embodiment 3

[0031] 1. Fully grind 200 g of α-cyclodextrin and 20 g of polytetrahydrofuran ether glycol (molecular weight: 600) at 50° C. for 4 hours to obtain an α-cyclodextrin / polytetrahydrofuran ether glycol complex.

[0032] 2. Dissolve 200g of α-cyclodextrin / polytetrahydrofuran ether glycol complex in 700g of N,N-dimethylformamide under the condition of 60°C under mechanical stirring to form α-cyclodextrin / Polytetrahydrofuran ether glycol complex solution, cooled to room temperature.

[0033] 3. Add 500g of α-cyclodextrin / polytetrahydrofuran ether glycol complex solution into 20Kg stable polyurethane spinning stock solution with a solid content of 32% at 20°C. After aging, filtering and defoaming, dry Spinning method, the gas temperature in the tunnel is 260 ° C, and the spinning speed is 800 m / min to obtain 40D polyurethane elastic fibers.

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Abstract

The invention relates to a preparation method of cyclodextrin compound modified polyurethane elastic fibers. The preparation method comprises the following steps: forming a stable cyclodextrin compound from cyclodextrin and polyether diol by adopting a grinding manner; then dissolving the cyclodextrin compound by using a solvent to form a cyclodextrin compound solution; adding the cyclodextrin compound solution into a stable spinning stock solution of polyurethane elastic fibers; and stirring uniformly, and then performing dry method spinning to obtain the polyurethane elastic fibers. The cyclodextrin compound modified polyurethane elastic fibers prepared by the method provided by the invention have relatively good heat stability, mechanical properties and dyeing properties.

Description

technical field [0001] The invention belongs to the field of preparation of elastic fiber materials, in particular to a preparation method of cyclodextrin compound modified polyurethane elastic fiber. Background technique [0002] Polyurethane elastic fiber has many advantages such as light specific gravity, high breaking strength, high breaking elongation, high elasticity and good elastic recovery at room temperature. However, with the expansion of the use and application fields of polyurethane elastic fibers, higher requirements are put forward for the mechanical properties of polyurethane elastic fibers. In addition to higher requirements for mechanical properties, the requirements for high performance are also particularly prominent. When spandex is blended with other fibers for dyeing, due to the heat resistance of spandex, blended fabrics are difficult to meet people's diverse color needs, which limits the application of spandex. (Zhao Ruopeng, Shen Jian, etc. Resear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/94D01F1/10
Inventor 陈大俊庄绪杰李妍静于东杰
Owner DONGHUA UNIV