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Antibacterial polyurethane fiber and preparation method thereof

A technology of spandex fiber and fiber, applied in the field of spandex fiber and its preparation, can solve the problems of silver nanometer size and shape being difficult to control, weak adsorption, easy to be eluted, etc., and achieves reduction of toxicological effects and good spinnability. , The effect of not easy to fall off

Active Publication Date: 2012-08-01
宁夏宁东泰和新材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The layered silver-based inorganic antibacterial composite functional powder added by the former means that it contains Ag + The inorganic antibacterial material is not nano-silver, and the presence of the carrier may also have a certain impact on the mechanical properties of the fiber itself; the Ag in the antibacterial fiber prepared by the latter method + It is loaded on the fiber surface by adsorption, which may not be adsorbed firmly and is easy to be eluted; in addition, a reducing agent needs to be added to cause a reduction reaction on the fiber surface, so the size and shape of silver nanometers obtained by this method are not easy to control

Method used

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  • Antibacterial polyurethane fiber and preparation method thereof
  • Antibacterial polyurethane fiber and preparation method thereof
  • Antibacterial polyurethane fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] React 170g of polytetramethylene ether glycol and 40g of 4,4-diphenylmethane diisocyanate at 70°C for 40min, then add 340g of N,N-dimethylacetamide to dilute, and then quickly add 5g of ethyl alcohol while stirring. Diamine, 3g 2-methylpentamethylenediamine, 100g N,N-dimethylacetamide solution of 1g ethanolamine, carry out chain extension reaction, then add TiO 2 1g, AT245 1g, to obtain a polyurethane stock solution.

[0034] Add 20 g of N,N-dimethylacetamide solution with a concentration of 15% polyurethane in the three-necked flask, slowly add 20 g of N,N-dimethylacetamide solution containing 0.25 g of silver nitrate under stirring, and stir at room temperature for 0.5 After ~1 hour, gradually raise the temperature to 70°C, and continue to stir for 3 hours. A golden yellow silver sol is formed, wherein the silver nanoparticles have a particle size of 1nm-100nm. After cooling, they are used as antibacterial agents (containing about 0.15g of nanosilver).

[0035] Add ...

Embodiment 2

[0037] React 170g of polytetramethylene ether glycol and 40g of 4,4-diphenylmethane diisocyanate at 70°C for 40min, then add 340g of N,N-dimethylacetamide to dilute, and then quickly add 5g of ethyl alcohol while stirring. Diamine, 3g2-methylpentamethylenediamine, 100g N,N-dimethylacetamide solution of 1g ethanolamine, carry out chain extension reaction, then add TiO 2 1g, AT245 1g, to obtain a polyurethane stock solution.

[0038] Add 30 g of N,N-dimethylacetamide solution with a concentration of 25% polyurethane in the three-necked flask, slowly add 30 g of N,N-dimethylacetamide solution containing 1.0 g of silver nitrate under stirring, and stir at room temperature for 0.5 After ~1 hour, gradually raise the temperature to 70°C, and continue to stir for 3 hours. A golden yellow silver sol is formed, wherein the silver nanoparticles have a particle size of 1nm~100nm, and are used as an antibacterial agent after cooling (containing about 0.63g of nanosilver).

[0039] Add 60...

Embodiment 3

[0041]React 170g of polytetramethylene ether glycol and 40g of 4,4-diphenylmethane diisocyanate at 70°C for 40min, then add 340g of N,N-dimethylacetamide to dilute, and then quickly add 5g of ethyl alcohol while stirring. Diamine, 3g2-methylpentamethylenediamine, 100g N,N-dimethylacetamide solution of 1g ethanolamine, carry out chain extension reaction, then add TiO 2 1g, AT245 1g, to obtain a polyurethane stock solution.

[0042] Add 100 g of N,N-dimethylacetamide solution with 31% polyurethane in the three-necked flask, slowly add 60 g of N,N-dimethylacetamide solution containing 2.5 g of silver nitrate under stirring, and stir at room temperature for 0.5 ~1 hour. Gradually raise the temperature to 70°C and continue to stir for 3 hours to form a golden yellow silver sol, wherein the silver nanoparticles have a particle size of 1nm to 100nm and are used as an antibacterial agent after cooling (containing about 1.6g of nanosilver).

[0043] Add 160g of antibacterial agent (...

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Abstract

The invention discloses an antibacterial polyurethane fiber and a preparation method thereof. On a dry weight basis, the prepared antibacterial polyurethane fiber contains 0.01%-1.0% of nano-silver in weight percentage. The size and shape of the nano-silver are controllable, and the nano-silver can be uniformly distributed at the interior and on the surface of the fiber. The antibacterial polyurethane fiber has the advantages that an antimicrobial spectrum is wide, the antibiosis is long-lasting, toxic and side effects are few, the preparation method is simple, the spinnability and post-fabricability are good, and the like, thus being widely applied to the fields of medical materials, spinning materials and the like.

Description

technical field [0001] The invention relates to an antibacterial spandex fiber and a preparation method thereof, belonging to the technical field of spandex fiber and its preparation method. Background technique [0002] Scientists have been working on the selection of antibacterial fibers and research on antibacterial processing methods for many years. So far, there are two main methods of producing antibacterial fibers: (1) mixing pre-prepared or purchased antibacterial agents with molten fibers for direct drawing, or making a mixed solution with polymers for spinning, which is suitable for polymeric fibers; 2) After the antibacterial agent is dispersed, it is loaded on the fiber by padding or slurry wrapping. This method makes the antibacterial agent mostly on the surface of the fiber, it is difficult to enter the inside of the fiber, and it is easy to wash off, which limits the durability of the antibacterial performance of the fiber. [0003] The antibacterial composi...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/10D01D1/02D01D5/04D01D11/00
Inventor 曲荣君高静静马千里韩虎孙昌梅王春华纪春暖
Owner 宁夏宁东泰和新材有限公司
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