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Antibacterial and formaldehyde-removing manganese dioxide/polyurethane composite fiber and preparation method thereof

A manganese dioxide and composite fiber technology, applied in the chemical characteristics of fibers, single-component synthetic polymer rayon, rayon manufacturing, etc., can solve the problem of expensive silver ions, water-based materials that are not particularly good in water resistance, and easy to be oxidized. Black and other problems, to achieve the effect of simple, low cost, long-lasting antibacterial properties

Pending Publication Date: 2022-04-12
GUANGDONG BANGGU FILM COATING INNOVATION ACAD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN106988016B discloses a kind of antibacterial water-based polyurethane nanofiber film and its preparation method. It discloses the use of nano-silver ions mixed with water-based polyurethane and polyvinyl alcohol to prepare antibacterial composite fibers by electrospinning. However, silver ions are more expensive and time-consuming It is easy to be oxidized and blackened, and the water resistance of water-based materials is not particularly good, so the application is limited

Method used

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Examples

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preparation example Construction

[0017] The invention provides a method for preparing an antibacterial and formaldehyde-removing manganese dioxide / polyurethane composite fiber, the preparation steps comprising:

[0018] (1) Preparation of manganese dioxide powder

[0019] Add the hydrogen peroxide solution and the alkali solution dropwise to the manganese salt solution at the same time, do not add dropwise until a precipitate is formed, then reflux and stir the reaction at 50-80°C for 4-8 hours, and filter the product with suction, wash, dry, grind, Sieve to obtain manganese dioxide powder;

[0020] (2) Preparation of electrospinning solution

[0021] Dissolving the solid polyurethane resin in a solvent, stirring and dissolving to obtain a polyurethane solution;

[0022] Mix manganese dioxide powder, antibacterial agent, and liquid coupling agent uniformly to obtain mixture A;

[0023] Add the mixture A to the polyurethane solution and stir evenly to obtain an electrospinning solution;

[0024] (3) Electr...

Embodiment 1

[0038] A kind of preparation method of the manganese dioxide / polyurethane composite fiber of antibacterial formaldehyde removal, comprises steps:

[0039] (1) Preparation of manganese dioxide powder

[0040] (1.1) Manganese sulfate, sodium hydroxide, and hydrogen peroxide are added to deionized water respectively to prepare 2mol / L manganese salt solution, 2mol / L alkali solution, and 5% hydrogen peroxide solution;

[0041] (1.2) Add the hydrogen peroxide solution and the alkali solution dropwise to the manganese salt solution at the same time, stop adding dropwise until a precipitate is formed, and then reflux and stir the reaction at 50°C for 4 hours, with a rotation speed of 200rpm;

[0042] (1.3) Cool to room temperature, then suction filter and wash, do not use the filtrate, take the filtrate, and dry in an oven at 80°C for 24 hours to completely dry;

[0043] (1.4) Grind the dried material into powder and pass through a 2000 mesh sieve to obtain nanometer to micron mangan...

Embodiment 2

[0050] A kind of preparation method of the manganese dioxide / polyurethane composite fiber of antibacterial formaldehyde removal, comprises steps:

[0051] (1) Preparation of manganese dioxide powder

[0052](1.1) Manganese nitrate, ammonium bicarbonate, and hydrogen peroxide are added to deionized water respectively to prepare 1mol / L manganese salt solution, 1mol / L alkali solution, and 10% hydrogen peroxide solution;

[0053] (1.2) Add the hydrogen peroxide solution and the alkali solution dropwise to the manganese salt solution at the same time, stop dropping until the precipitate is formed, and then reflux and stir the reaction at 60°C for 6h, with a rotation speed of 200rpm;

[0054] (1.3) Cool to room temperature, then suction filter and wash, do not use the filtrate, take the filtrate, and dry in an oven at 90°C for 24 hours to completely dry;

[0055] (1.4) the material after drying is ground into powder, crosses 2000 mesh sieves, obtains the manganese dioxide powder of...

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Abstract

The invention provides a preparation method of an antibacterial formaldehyde-removing manganese dioxide / polyurethane composite fiber, which comprises the following steps: (1) simultaneously dropwise adding a hydrogen peroxide solution and an alkali solution into a manganese salt solution, reacting for 4-8 hours, and carrying out suction filtration, washing, drying, grinding and sieving on a product to obtain manganese dioxide powder; (2) dissolving solid polyurethane resin in a solvent to obtain a polyurethane solution; uniformly mixing manganese dioxide powder, an antibacterial agent and a liquid coupling agent to obtain a mixture A; adding the mixture A into a polyurethane solution to obtain an electrostatic spinning solution; and (3) preparing the manganese dioxide / polyurethane composite fiber from the electrostatic spinning solution by adopting an electrostatic spinning technology. The manganese dioxide / polyurethane composite fiber prepared by the method not only has long-acting antibacterial performance, but also has the function of removing formaldehyde at room temperature, the preparation materials are easy to obtain, the cost is low, and the production process is simple. The invention also provides the antibacterial and formaldehyde-removing manganese dioxide / polyurethane composite fiber.

Description

technical field [0001] The invention relates to the technical field of electrospinning materials, in particular to an antibacterial and formaldehyde-removing manganese dioxide / polyurethane composite fiber and a preparation method thereof. Background technique [0002] Electrospinning technology is a device that uses polymer solution to spray under a strong electric field for spinning processing. Ultrafine fibers with a diameter of submicron to nanometer can be obtained by electrospinning, which has the characteristics of large specific surface area and high porosity. It is a common method to prepare composite fibers of inorganic substances + polymer materials by electrospinning. At present, it is a research hotspot for the composite fibers to have antibacterial properties. For example, Chinese patent CN105887327B discloses a composite nanofiber membrane and its The preparation method specifically records that chitosan, gelatin and polyurethane are blended, and an antispinni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/94D01F1/10
Inventor 薛萌曹学锋宋恩耀向煌丁敬德赵世博
Owner GUANGDONG BANGGU FILM COATING INNOVATION ACAD CO LTD
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