Method for preparing efficient and durable antibacterial melt-blown non-woven fabric

A melt-blown non-woven fabric, a long-lasting technology, applied in non-woven fabrics, rayon manufacturing, textiles and papermaking, etc., can solve the problems of large nano-silver powder particles, difficult to disperse, and easy agglomeration of nano-silver powder, and achieve The effect of uniform distribution, avoiding agglomeration and saving production cost

Inactive Publication Date: 2017-02-22
江西天滤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The in-situ generation method in the finishing process avoids the use of related adhesives and improves the bonding fastness of nanomaterials to a certain extent. However, nanomaterials are still bonded to the fiber surface, which cannot guarantee long-term fastness, especially Under harsh conditions of use, such as frequent washing, friction, etc.
Using nano-silver and spinning raw materia

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Dissolve 10 g of the amphiphilic hyperbranched polymer in 500 ml of chloroform, and then add 500 ml of silver nitrate aqueous solution with a concentration of 0.01 mol / L to the above chloroform solution, and fully stir for 15 minutes. After standing for stratification, the chloroform solution was separated with a separatory funnel, and then part of the chloroform was removed by vacuum rotary evaporation at room temperature with a rotary evaporator to obtain 50ml of 200g / L high concentration amphiphilic hyperbranched polymer solution. Spray the high-concentration solution into 250 kg of polyester granules and stir constantly. After the production and processing of the polyester melt-blown non-woven fabric, a polyester melt-blown non-woven fabric with a particle diameter of 5-16 nm nano-silver in the fiber is obtained. After 100 times of washing, the meltblown non-woven fabric has a bacteriostatic rate of 98.1% against gram-negative bacteria Escherichia coli, and an inhibi...

Embodiment 2

[0017] Dissolve 10 g of amphiphilic hyperbranched polymer in 500 ml of chloroform, then add 500 ml of silver nitrate aqueous solution with a concentration of 0.001 mol / L to the above-mentioned chloroform solution and fully stir for 15 minutes. After standing for layering, separate the chloroform solution with a separatory funnel, and then use a rotary evaporator to remove part of the chloroform by vacuum rotary evaporation at room temperature to obtain 50ml of 200g / L high concentration amphiphilic hyperbranched polymer solution . Spray the high-concentration solution into 500kg of polyamide 6 granules and stir constantly. After the production and processing of the polyamide 6 melt-blown non-woven fabric, a polyamide 6 melt-blown non-woven fabric with a particle diameter of 2-6 nm nano-silver in the fiber is obtained. After 100 times of washing, the meltblown non-woven fabric has a bacteriostatic rate of 97.2% against gram-negative bacteria Escherichia coli and a bacteriostatic...

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Abstract

The invention discloses a method for preparing antibacterial non-woven fabric, and particularly relates to a method for preparing efficient and durable nano-silver antibacterial melt-blown non-woven fabric. The method includes the steps that a benzene or methylbenzene or trichloromethane or carbon tetrachloride solution of an amphipathy hyperbranched polymer and a silver nitrate aqueous solution are mixed and stirred, and a high-concentration solution of the amphipathy hyperbranched polymer is obtained through standing liquid separation and rotating evaporation; the high-concentration solution is sprayed into raw material particles or slices of melt-blown non-woven fabric with a spraying method, continuous stirring is carried out, then the processing working procedure of the melt-blown non-woven fabric is carried out, and the antibacterial non-woven fabric with fibers containing nano-silver particles can be obtained. According to the method, nano-silver is generated in melt-blown non-woven fabric fibers through the amphipathy hyperbranched polymer in an in-situ control mode, and the generated nano-silver has the advantages of being small in particle size, even in dispersing and high in combining firmness; meanwhile, existing melt-blown non-woven fabric production equipment does not need to be upgraded and transformed, and processing is easy and convenient.

Description

Technical field [0001] The invention relates to a method for preparing an antibacterial meltblown nonwoven fabric, in particular to a method for preparing an efficient and durable antibacterial meltblown nonwoven fabric. Background technique [0002] Because of its simple preparation process and low cost, meltblown nonwovens have a wide range of applications in daily life, such as clothing accessories, packaging materials, air filtration, water filtration materials, and disposable medical materials. It is precisely because of its wide range of applications that higher requirements are put forward for its high performance and functionality, such as antibacterial, flame retardant, antistatic and other functional nonwoven products. Among them, antibacterial nonwovens have the most extensive application prospects, especially in areas closely related to people's daily lives. For example, non-woven fabrics for food packaging, non-woven fabrics for air filtration such as masks and air ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04H1/42D01F1/10
CPCD04H1/42D01F1/103
Inventor 张德锁韩涛姜伯川
Owner 江西天滤新材料有限公司
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