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Wear-resistant polyurethane elastomeric fiber and preparation method thereof

A technology of polyurethane elasticity and polyurethane solution, applied in the direction of single-component polyurethane rayon, fiber chemical characteristics, rayon manufacturing, etc., can solve the problem of less wear-resistant spandex fibers, etc., and achieve mature manufacturing technology, easy promotion, and industrial implementation easy effect

Inactive Publication Date: 2015-12-16
ZHEJIANG HUAFENG SPANDEX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few patented technologies and documents on the production of wear-resistant spandex fibers. Therefore, it is necessary to develop a new technology for producing wear-resistant spandex fibers to meet the needs of spandex fiber manufacturing technology and the development of clothing fields.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1) Mix the raw materials polytetramethylene ether glycol and 4,4'-diphenylmethane diisocyanate, and react at 90°C for 120 minutes to prepare a prepolymer, in which 4,4'-diphenylmethane diisocyanate and The molar ratio of polytetramethylene ether glycol is 1.73:1;

[0049] 2) Preparation of mixed amine solution: Dissolve ethylenediamine and propylenediamine in a molar ratio of 5:1 into the solvent N,N-dimethylacetamide, and then add diethylamine with a diamine molar content of 15% to form a mass A mixed amine solution with a percentage concentration of 5.00%;

[0050] 3) Add the mixed amine solution into the prepolymer solution and stir, wherein the molar ratio of amine groups to isocyanate groups is 1.06:1, and react to form a concentration of 35% by mass polymer solution;

[0051] 4) The method of preparing wear-resistant additives: add titanate coupling agent, nano-alumina, acetone and p-toluenesulfonic acid according to the ratio of 0.1:1:7:0.025 by mass percentage...

Embodiment 2

[0056] 1) Mix the raw materials polytetramethylene ether glycol and 4,4'-diphenylmethane diisocyanate, and react at 90°C for 120 minutes to prepare a prepolymer, in which 4,4'-diphenylmethane diisocyanate and The molar ratio of polytetramethylene ether glycol is 1.73:1;

[0057] 2) Preparation of mixed amine solution: Dissolve ethylenediamine and propylenediamine in a molar ratio of 5:1 into the solvent N,N-dimethylacetamide, and then add diethylamine with a diamine molar content of 15% to form a mass A mixed amine solution with a percentage concentration of 5.00%;

[0058] 3) Add the mixed amine solution into the prepolymer solution and stir, wherein the molar ratio of amine groups to isocyanate groups is 1.06:1, and react to form a concentration of 35% by mass polymer solution;

[0059] 4) The method of preparing anti-wear additives: add titanate coupling agent, nano-alumina, acetone and p-toluenesulfonic acid according to the ratio of 0.5:1:7:0.025 by mass percentage, sti...

Embodiment 3

[0064] 1) Mix the raw materials polytetramethylene ether glycol and 4,4'-diphenylmethane diisocyanate, and react at 90°C for 120 minutes to prepare a prepolymer, in which 4,4'-diphenylmethane diisocyanate and The molar ratio of polytetramethylene ether glycol is 1.73:1;

[0065] 2) Preparation of mixed amine solution: Dissolve ethylenediamine and propylenediamine in a molar ratio of 5:1 into the solvent N,N-dimethylacetamide, and then add diethylamine with a diamine molar content of 15% to form a mass A mixed amine solution with a percentage concentration of 5.00%;

[0066] 3) Add the mixed amine solution into the prepolymer solution and stir, wherein the molar ratio of the amine group to the isocyanate group is 1.06:1, and react to form a concentration of 35% by mass polymer solution;

[0067] 4) The method of preparing the anti-wear additive: add the titanate coupling agent, nano-alumina, acetone and p-toluenesulfonic acid according to the ratio of 1:1:7:0.025 by mass perc...

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Abstract

The invention relates to a wear-resistant polyurethane elastomeric fiber and a preparation method thereof, specifically to a polyurethane resin composition containing a wear-resistant aid and the polyurethane fiber with excellent wear resistance prepared from the polyurethane resin composition. The method comprises the following steps: 1) subjecting oligomer dihydric alcohol and excess organic diisocyanate to primary polymerization so as to obtain prepolymer; 2) dissolving the prepolymer in an organic solvent, then reacting the dissolved prepolymer with diamine and monoamine and carrying out secondary polymerization so as to prepare a polyurethane solution; and 3) adding the wear-resistant aid accounting for 0.5 to 10 wt% of the weight of the polyurethane polymer into the polyurethane solution so as to obtain a mixture and carrying out spinning on the mixture so as to obtain the wear-esistant polyurethane elastomeric fiber. The preparation method is simple to implement and can be widely used for polyurethane elastomeric fibers of different kinds; and the prepared polyurethane elastomeric fiber has excellent wear resistance.

Description

technical field [0001] The invention relates to a method for manufacturing a novel functionalized spandex fiber, in particular to a spandex fiber with good wear resistance and a method for manufacturing the same. The invention belongs to the technical field of polymer material preparation. Background technique [0002] Spandex, a highly elastic textile fiber, has the advantages of high strength, light specific gravity, and large elastic recovery rate at room temperature, and is widely used in fabrics. [0003] As we all know, no matter whether people are working or studying, they move uninterruptedly. In some parts of the clothes, such as knee joints and elbow joints, the wear and deformation of clothes are often more serious than other parts. We often find that due to long-term force deformation in these parts, the surface of the clothes will have protrusions, aliasing, or even damage, which seriously affects the aesthetics of the clothes and reduces the performance of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/70D01F1/10C08G18/76C08G18/66C08G18/48C08G18/32
Inventor 王靖梁红军许图远陈厚翔杨晓印
Owner ZHEJIANG HUAFENG SPANDEX
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