Making method of antibacterial high-efficiency filtering nonwoven fabric

A high-efficiency filtration and non-woven fabric technology, applied in the direction of non-woven fabrics, textiles, papermaking, fiber types, etc., can solve problems such as uncontrollable molecular weight and branching degree, non-compliance with safety and environmental protection policies, and poor material performance. Improve the antibacterial filtration effect, ensure long-term performance, and improve the filtration effect

Active Publication Date: 2017-07-04
上海盈兹无纺布有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent directly uses the hydrophilic hyperbranched polymer, its molecular weight and branching degree are uncontrollable, and its branching degree and molecular chain have an important impact on the filtration performance, so the performance of the prepared material is not good
Moreover, the use of organic toxic agents such as benzene and toluene in the preparation process of this patent does not conform to the safety and environmental protection policy advocated by the state

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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  • Making method of antibacterial high-efficiency filtering nonwoven fabric
  • Making method of antibacterial high-efficiency filtering nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dissolve 0.5mol ethylenediamine in 100mL methanol, mix well, add methyl acrylate (0.5mol) drop by drop under ice bath condition, then remove ice bath, stir at room temperature under nitrogen atmosphere for 6h, The mixture was poured into a rotary evaporator to remove methanol (150°C, 4h), and vacuumized to obtain a yellow transparent solid, which was precipitated with ether for several times and then dialyzed to obtain a hyperbranched polymer (HBP);

[0028] (2) Add 0.01mol / L AgNO 3 Mix the aqueous solution and its 1.5% isocyanate silane coupling agent, add it dropwise to 2g / L HBP (100mL) aqueous solution, and react in a water bath at 50°C for 1 hour to obtain a light yellow translucent Ag / HBP mixed solution;

[0029] (3) Melt-blown / electrospun polar polymer non-woven fabric (base fabric raw material is polyester), since polyester is a non-polar material, firstly immerse the non-woven fabric in a chitosan solution to improve After that, put the modified non-woven f...

Embodiment 2

[0032] (1) First prepare hyperbranched polymer (HBP): Dissolve 0.6mol ethylenediamine in 100mL methanol under ice bath conditions, mix well and add methyl acrylate (0.45mol) drop by drop, then remove the ice bath, stirred at room temperature under nitrogen atmosphere for 6h, then poured the mixture into a rotary evaporator to remove methanol (120°C, 7h), and obtained a yellow viscous transparent solid, which was dialyzed after several precipitations with ether to obtain a hyperbranched polymer (HBP). .

[0033] (2) Add 0.005mol / L AgNO 3 Mix the aqueous solution and its 1.5% epoxy silane coupling agent, add it dropwise to 2g / L HBP (100mL) aqueous solution, and react in a water bath at 50°C for 2 hours to obtain a light yellow translucent Ag / HBP mixed solution .

[0034] (3) Immerse the melt-blown / electrospun polar polymer non-woven fabric (the raw material of the base fabric is polyacrylonitrile) into the Ag / HBP mixture, keeping the liquid-to-fabric ratio at 150:1, after 100 ...

Embodiment 3

[0036] (1) First prepare hyperbranched polymer (HBP): Dissolve 0.4mol ethylenediamine in 100mL methanol under ice bath conditions, mix well and add methyl acrylate (0.6mol) drop by drop, then remove the ice bath, stirred at room temperature under nitrogen atmosphere for 6h, then poured the mixture into a rotary evaporator to remove methanol (120°C, 7h), and obtained a yellow viscous transparent solid, which was dialyzed after several precipitations with ether to obtain a hyperbranched polymer (HBP). .

[0037] (2) Add 0.015mol / L AgNO 3 The aqueous solution and its 1.5% mercaptosilane coupling agent were mixed, added dropwise to 2g / L HBP (100mL) aqueous solution, and reacted in a water bath at 50°C for 2h to obtain a light yellow translucent Ag / HBP mixed solution.

[0038] (3) Immerse the melt-blown / electrospun polar polymer non-woven fabric (the raw material of the base fabric is polylactic acid) into the Ag / HBP mixture, keeping the liquid-to-fabric ratio at 90:1, and treat i...

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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Abstract

The invention relates to a making method of an antibacterial high-efficiency filtering nonwoven fabric. The method comprises the following steps: adding a silver nitrate solution to an amino-containing hyper branched polymer solution prepared through reacting methyl acrylate with ethylenediamine in order to obtain an amino-containing Ag/HBP, and mixing the silver nitrate solution with a coupling agent to carry out surface treatment; and impregnating a nonwoven fabric in an Ag/HBP mixed solution, and carrying out heat treatment to obtain the filtering nonwoven fabric. The nonwoven fabric made in the invention can be used in personal protective articles, also can be used in air purifiers of household and office environments, greatly improves the filtration of miniature particles, and can kill bacteria carried by dust particles in air.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a simple preparation method for antibacterial and high-efficiency filter non-woven fabrics. Background technique [0002] With the deterioration of air quality, the phenomenon of haze is gradually increasing, and the haze particles with a diameter ranging from 0.001um to 10um contain a large amount of harmful particles such as sulfuric acid and sulfide, which seriously endanger people's health. Long-term inhalation can lead to respiratory diseases and cardiovascular diseases. , while increasing the risk of cancer; secondly, because it scatters more light with larger wavelengths, the haze looks yellow or orange-gray, causing great inconvenience to traffic. [0003] Since the 1950s, the rapid development of the non-woven industry has provided a new direction for air filter materials. At present, melt-blown non-woven fabrics have become the main processing method of non...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M15/263D06M15/37D04H1/728D04H1/435D04H1/4334D04H1/4291D06M101/32D06M101/28D06M101/00D06M101/34D06M101/30
CPCD04H1/4291D04H1/4334D04H1/435D04H1/728D06M11/83D06M15/263D06M15/37D06M2101/00D06M2101/28D06M2101/30D06M2101/32D06M2101/34
Inventor 王利娜石素宇秦爱文宋会芬宗鼎鼎刘仕鹏
Owner 上海盈兹无纺布有限公司
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