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A kind of micron inorganic antibacterial fiber and preparation method thereof

An inorganic antibacterial fiber, micron-level technology, applied in the direction of fiber chemical characteristics, inorganic raw material artificial filament, silicate, etc., can solve the problems of poor antibacterial durability, poor acid resistance, large pollution, etc., to achieve strong fiber strength, Enhanced adsorption capacity and large specific surface area

Active Publication Date: 2020-09-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antibacterial fiber prepared by this mixed method has weak binding force between silver and organic fiber, and the durability of antibacterial property is poor.
In addition, organic antibacterial fibers are weak in strength and poor in acid resistance, and a large amount of organic reagents will be used in the preparation process, resulting in greater pollution

Method used

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  • A kind of micron inorganic antibacterial fiber and preparation method thereof
  • A kind of micron inorganic antibacterial fiber and preparation method thereof
  • A kind of micron inorganic antibacterial fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) 20g magnesium oxide and 50g sodium silicate are added in the reactor, then add 300mL concentration and be the sulfuric acid of 10wt.%, stir and mix reaction, obtain polysilicate magnesium compound;

[0032] (2) The polymagnesium silicate compound obtained in step (1) is pressure-molded through a spinneret to form a hollow fiber, cut to form a short fiber with a length of 2-4 μm, and dried at 100-120° C. to obtain a silicon-magnesium fiber A.

[0033] (3) 10 g of silicon-magnesium fiber obtained in step (2) is treated with hydrochloric acid with a concentration of 5wt.% at room temperature for 5 hours at a solid-liquid ratio of 1:10 (g / mL), and the fiber material after the treatment is washed to neutrality, and placed at 105 ℃ drying to obtain acid-modified silicon-magnesium fiber C;

[0034] (4) Get step (3) gained modified silicon magnesium fiber 2.2g and join in silver nitrate solution (take by weighing 0.0012g silver nitrate with precision analytical balance, tra...

Embodiment 2

[0038] (1) 30g of magnesium oxide and 40g of sodium silicate are added to the reactor, and then 300mL of sulfuric acid with a concentration of 10wt.% is added, stirred and mixed for reaction to obtain a polymagnesium silicate compound;

[0039] (2) The polymagnesium silicate compound obtained in step (1) is pressure-molded through a spinneret to form a hollow fiber, cut to form a short fiber with a length of 2-4 μm, and dried at 100-120° C. to obtain a silicon-magnesium fiber B.

[0040] (3) 10 g of silicon-magnesium fiber obtained in step (2) is treated with hydrochloric acid with a concentration of 5wt.% at room temperature for 5 hours at a solid-liquid ratio of 1:10 (g / mL), and the fiber material after the treatment is washed to neutrality, and placed at 105 ℃ drying to obtain acid-modified silicon-magnesium fibers;

[0041] (4) Get step (3) gained modified silicon magnesium fiber 2.2g to join in silver nitrate solution (take by weighing 0.0012g silver nitrate with precisio...

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Abstract

The invention belongs to the field of inorganic antibacterial materials, and discloses micron inorganic antibacterial fibers and a preparation method of the micron inorganic antibacterial fibers. Magnesium oxide, sodium silicate and sulfuric acid are mixed for reaction to obtain a polysilicate magnesium compound, then hollow fibers are formed by press forming of a spinneret and cut to form short fibers with the lengths being 2 to 4 microns, and the short fibers are dried to obtain silicon magnesium fibers; the obtained silicon magnesium fibers are treated with hydrochloric acid and washed withwater, dried, and then added to a silver nitrate solution to be immersed and subjected to ultrasonic treatment and filtered, and obtained solids are soaked in a glucose solution, washed with water and dried to obtain the micron inorganic antibacterial fibers. The antibacterial fibers prepared by the invention have the characteristics of strong fiber strength, difficultly falling nano-silver and the like and the antibacterial rate of the micron inorganic antibacterial fibers for escherichia coli and staphylococcus aureus is more than 90%.

Description

technical field [0001] The invention belongs to the field of inorganic antibacterial materials, and in particular relates to a micron-scale inorganic antibacterial fiber and a preparation method thereof. Background technique [0002] Microbes exist in the corners of people's lives, and harmful organisms such as mites, Escherichia coli, and Staphylococcus aureus will affect people's normal daily life. Silver, copper, and zinc ions, which have sterilizing properties, have long been known and utilized by humans. Modern science has confirmed that nano-silver can decompose a very small amount of silver ions in water. This silver ion can absorb microorganisms such as viruses and bacteria in water, and enter into their cells, so that the enzyme proteins on which the bacteria depend for survival will lose their function, thereby killing them. Germs. [0003] Antibacterial fiber refers to the fiber that has the functional effect of inhibiting fungi, viruses and other harmful organi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08D01F11/00C01B33/22
CPCC01B33/22C01P2004/03D01F9/08D01F11/00
Inventor 肖凯军王震朱良何家鹏
Owner SOUTH CHINA UNIV OF TECH
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