WO2021227404A1 - Method for preparing plant herb nano-aluminum dust-proof and anti-microbial slurry, and method for preparing melt-blown fabric - Google Patents

Abstract

Disclosed is a method for preparing a plant herb nano-aluminum dust-proof and anti-microbial slurry, the method involving: subjecting a plant herb material to crushing, stewing, concentration and filtration to obtain a plant herb extraction liquid; and diluting the plant herb extraction liquid, adding a polyacrylamide and stirring same, then adding nano-alumina and a natural plant essence, and mixing and stirring same to prepare a plant herb nano-aluminum dust-proof and anti-microbial slurry. Further disclosed is a method for preparing a melt-blown fabric based on the plant herb nano-aluminum dust-proof and anti-microbial slurry, the method involving: mixing and spraying the plant herb nano-aluminum dust-proof and anti-microbial slurry and melt-blown fabric raw materials by means of a fully automatic pneumatic spray gun, to prepare a melt-blown fabric containing a new plant herb nano-aluminum dust-proof and anti-microbial adsorption material, and automatically drying and discharging same. During the production of the melt-blown fabric, adding nano-alumina and adding a plant herb aqueous solution can efficiently prevent dust, resist microbes and make air fresh.

Description

Preparation method of plant herb nano aluminum dust-proof and antibacterial slurry and melt-blown cloth Technical field

The invention relates to the technical field of new materials, in particular to a preparation method of plant herb nano aluminum dust-proof and antibacterial slurry and its application on melt blown cloth.

Background technique

At present, the melt blown cloth for masks on the market is produced with polypropylene as the raw material. The highest grade is N99, most of them are N95, and the civilian ones are N90. The long-term adsorption of organic gases has peculiar smell and cannot completely block dust, which will affect humans. Good health, severely may cause lung cancer and respiratory diseases.

Summary of the invention

The purpose of the present invention is to provide a method for preparing a new plant herb nano aluminum dust-proof and anti-bacterial adsorption material. Nano aluminum oxide is added in the production of melt blown cloth, and plant herb water is added, which can effectively prevent dust, antibacterial and fresh air.

In order to achieve the above objective, the present invention adopts the following technical solution: a preparation method of plant herb nano aluminum dust-proof and antibacterial slurry, the steps are as follows:

S1. Crushing, decocting, concentrating, and filtering plant herbal materials to obtain plant herbal extracts;

S2. Dilute the plant herb extract, add polyacrylamide and stir, then add nano alumina and plant natural flavor to mix and stir to make plant herb nano aluminum dust-proof and antibacterial slurry;

More preferably, the plant herbal material is composed of 5-10 parts by mass of mugwort leaves, 5-10 parts by mass of tea leaves, 2-8 parts by mass of mulberry leaves, and 3-8 parts by mass of mint. Mugwort leaves, tea leaves, mulberry leaves, and mint all have the functions of sterilizing and anti-inflammatory, moisturizing the throat and clearing the lungs, and refreshing the air, and they are cheap.

More preferably, in step S1, the plant herb extract after filtration and pressure filtration is subjected to an activated carbon ceramic membrane or an ion membrane for adsorption and decolorization, so that the plant herb extract is colorless and transparent.

Further preferably, in step S2, the addition amount of polyacrylamide is 0.1-0.3‰ of the total mass of the slurry, the addition amount of nano alumina is 1-4% of the total mass of the slurry, and the addition amount of the natural plant flavor is the slurry 0.01-0.03‰ of the total mass, and the remaining components of the slurry are herbal extracts and deionized water.

The invention also discloses a method for preparing a melt-blown cloth based on the plant herb nano aluminum dust-proof and antibacterial slurry. The plant herb nano-aluminum dust-proof and antibacterial slurry and the melt-blown cloth raw materials are mixed and sprayed by a fully automatic air pressure spray gun to prepare The melt-blown cloth containing the new material of plant herb nano aluminum dust-proof, anti-bacterial and adsorption is obtained, which is automatically dried and discharged.

More preferably, the plant herb nano aluminum dust-proof and antibacterial slurry can be mixed with the meltblown cloth material and sprayed. It is best to spray separately through multiple automatic air pressure spray guns to make the plant herb nano aluminum dust-proof and antibacterial slurry spray mixed in Melt blown cloth thread.

The beneficial effects of the present invention: adding plant herbal nano aluminum dust-proof and anti-bacterial adsorption new material to the melt-blown cloth can effectively prevent dust, anti-bacterial and fresh air, and play a vital role in disease prevention, which is specifically shown in the following three aspects:

(1) According to the "Compendium of Materia Medica", Mugwort has anti-bacterial and anti-inflammatory, anti-asthmatic and cough-relief, dispelling dampness and cold and anti-allergic effects; tea has the effects of clearing lungs and throat, removing heat and phlegm, clearing bosses, clearing mind, clearing heat and detoxification, etc. ; Tea has the effects of dispelling wind and heat, cooling blood and improving eyesight, antibacterial and anti-inflammatory; peppermint has the effects of anti-flu, moisturizing the throat, eliminating heat and detoxification. In summary, adding this herbal semen to the new adsorption material can moisturize the throat, clear the lungs, clear away heat and detoxify, and have anti-bacterial and anti-inflammatory effects. The wormwood, tea, mulberry leaves, and mint in the plant herbs all have the functions of sterilizing and anti-inflammatory, moisturizing the throat and clearing the lungs, and refreshing the air.

(2) The added nano-alumina slurry, due to the large specific surface area and strong adsorption capacity of nano-alumina, can effectively adsorb dust and bacteria into the pores of the nano-aluminum membrane, and play a sterilization effect. Sterilize, and introduce natural plant flavors to change the peculiar smell and achieve the purpose of fresh air.

(3) First prepare nano alumina, polyacrylamide, herbal extracts, and flavors into a slurry. Because polyacrylamide is in contact with moisture and moisture, it has a discharge bridging effect and can effectively melt the moisture when the human body breathes. The plant herb nano-aluminum dust-proof and anti-bacterial adsorption new material on the spray cloth is blocked on the outside, forming the first protective net.

(4) Because the nano alumina slurry has strong adsorption capacity and large specific surface area, it can be used in melt blown cloth or other industries, which can greatly reduce the use of basic raw materials, make it thin and precise, and save costs? Improve the effectiveness of use.

Description of the drawings

Figure 1 is a process flow diagram of the present invention.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

Example 1

S1. The plant herb extract after crushing 5kg mugwort leaves, 10kg tea leaves, 5kg parts by mass of mulberry leaves, and 5kg mint, decoction, concentration, filtration, filtration and pressure filtration through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 10ml of herbal extract with 500g of water, add 1g of polyacrylamide and stir, then add 100g of nano-alumina and 0.1g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 2

S1. The plant herb extract after crushing, decoction, concentration, filtration, filtration and pressure filtration of 5kg mugwort leaves, 10kg tea leaves, 5kg parts of mulberry leaves, 10kg tea leaves, 5kg parts by mass of mulberry leaves, filter press filtration is subjected to an activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 10ml of herbal extract with 500g of water, add 2g of polyacrylamide and stir, then add 400g of nano-alumina and 0.2g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, stir Evenly, make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 3

S1. The plant herb extract after crushing 5kg mugwort leaves, 10kg tea leaves, 5kg parts by mass of mulberry leaves, and 5kg mint, decoction, concentration, filtration, filtration and pressure filtration through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 10ml of herbal extract with 500g of water, add 3g of polyacrylamide and stir, then add 200g of nano-alumina and 0.3g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 4

S1. The plant herb extract after crushing 5kg mugwort leaves, 10kg tea leaves, 5kg parts by mass of mulberry leaves, and 5kg mint, decoction, concentration, filtration, filtration and pressure filtration through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 20ml of herbal extract with 500g of water, add 3g of polyacrylamide and stir, then add 200g of nano-alumina and 0.3g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 5

S1. The plant herb extracts after 10kg mugwort leaves, 10kg tea leaves, 2kg parts by mass of mulberry leaves, and 3kg mint are crushed, decocted, concentrated, filtered, filtered and filtered through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 25ml of herbal extract with 500g of water, add 3g of polyacrylamide and stir, then add 200g of nano-alumina and 0.3g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 6

S1. The plant herb extract after 9kg mugwort leaves, 5kg tea leaves, 8kg parts by mass of mulberry leaves and 3kg mint are crushed, decocted, concentrated, filtered, filtered and filtered through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 25ml of herbal extract with 500g of water, add 3g of polyacrylamide and stir, then add 200g of nano-alumina and 0.3g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 7

S1. The plant herb extract after 8kg mugwort leaves, 7kg tea leaves, 2kg parts by mass of mulberry leaves and 8kg mint are crushed, decocted, concentrated, filtered, filtered and filtered through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 50ml of herbal extract with 500g of water, add 3g of polyacrylamide and stir, then add 200g of nano-alumina and 0.3g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Spray the herbal nano-aluminum dust-proof and anti-bacterial slurry and the melt-blown cloth raw materials through a fully automatic air-pressure spray gun, so that the herbal nano-aluminum dust-proof and anti-bacterial slurry is sprayed and mixed in the melt-blown cloth thread to obtain a plant-containing Herbal nano-aluminum dust-proof, anti-bacterial and absorbent melt-blown cloth is automatically dried and discharged to obtain a melt-blown cloth with a thickness of 0.25mm.

Example 8

S1. The plant herb extract after 8kg mugwort leaves, 7kg tea leaves, 2kg parts by mass of mulberry leaves and 8kg mint are crushed, decocted, concentrated, filtered, filtered and filtered through activated carbon ceramic membrane or ion membrane for adsorption and decolorization, so that The plant herb extract is colorless and transparent; the concentration of the concentrated plant herb extract is 0.5g/mL (equivalent to 1mL of the plant herb extract containing 0.5g of active ingredients, that is, the weight of the dried plant herb extract is 0.5g ).

S2. Dilute 100ml of plant herbal extract with 500g of water, add 3g of polyacrylamide and stir, then add 200g of nano alumina and 0.3g of natural plant essence, mix and stir, add deionized water to a total weight of 10kg, and stir evenly , Make 10kg plant herb nano aluminum dust-proof and antibacterial slurry;

S3. Mix this herbaceous nano aluminum dust-proof and antibacterial slurry with the melt-blown cloth raw materials, and then spray it with a fully automatic air pressure spray gun to prepare a melt-blown cloth containing the herbaceous nano-aluminum dust-proof and antibacterial absorption new material. After drying and discharging, a meltblown cloth with a thickness of 0.25mm is obtained.

Comparison

Using conventional polypropylene raw materials, and then spraying through a fully automatic air pressure spray gun, automatically drying and discharging melt blown cloth with a thickness of 0.25 mm.

Cultivate Escherichia coli and Staphylococcus aureus bacteria, dilute, cut a 50mm×50mm meltblown cloth, and sterilize them separately. Then add 0.5ml of the diluted bacterial solution dropwise to each sample, the concentration of the bacterial solution is 2×10 ⁴ cfu/mL, put it in a petri dish, incubate at room temperature for 24 hours, and count the number of colonies respectively.

The antibacterial rate is calculated as follows:

A- The average number of colonies in the comparative sample;

B- the average number of colonies in the tested sample;

X-Bacteriostatic rate%;

X=(A-B)/A×100%.

The results are as follows:

To	Antibacterial rate of Escherichia coli (%)	Antibacterial rate of Staphylococcus aureus (%)
Comparison	Non-bacteriostatic	Non-bacteriostatic
Example 1	92.75	94.63

Example 2	97.18	95.56
Example 3	98.12	96.17
Example 4	95.63	95.68
Example 5	95.66	97.31
Example 6	94.69	95.74
Example 7	96.31	96.66
Example 8	98.83	98.84

The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Anyone familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution of the present invention The equivalent replacement or change of the inventive concept thereof shall all fall within the protection scope of the present invention.

Claims (7)

1. A preparation method of plant herb nano aluminum dust-proof and antibacterial slurry, which is characterized in that the steps are as follows:

   S1. Crushing, decocting, concentrating, and filtering plant herbal materials to obtain plant herbal extracts;

   S2. Dilute the plant herb extract, add polyacrylamide and stir, then add nano alumina and plant natural essence to mix and stir to prepare plant herb nano aluminum dust-proof and antibacterial slurry.
2. The method for preparing a new plant herbal nano aluminum dust-proof and antibacterial adsorption material according to claim 1, characterized in that the plant herbal material consists of 5-10 parts by mass of mugwort, 5-10 parts by mass of tea, 2-8 parts by mass It is composed of mulberry leaves and 3-8 parts by mass of mint.
3. The method for preparing a new plant herb nano aluminum dust-proof and antibacterial adsorption material according to claim 1, characterized in that, in step S1, the plant herb extract after filtration and pressure filtration passes through an activated carbon ceramic membrane or an ion membrane. Adsorption and decolorization treatment makes the herbal extracts colorless and transparent.
4. The method for preparing a new plant herb nano aluminum dust-proof and antibacterial adsorption material according to claim 1, characterized in that, in step S2, the amount of polyacrylamide added is 0.1-0.3‰ of the total mass of the slurry, and the nano-oxidation The added amount of aluminum is 1-4% of the total mass of the slurry, the added amount of natural plant flavor is 0.01-0.03‰ of the total mass of the slurry, and the remaining components of the slurry are plant herb extracts and deionized water.
5. A method for preparing a melt-blown cloth based on herbal nano-aluminum dust-proof and antibacterial slurry, characterized in that the herbal nano-aluminum dust-proof and anti-bacterial slurry according to any one of claims 1 to 4 is passed through the melt-blown cloth raw material Fully automatic air-pressure spray gun mixes and sprays, prepares plant herb nano aluminum dust-proof and antibacterial adsorption new material, and automatically dries and discharges.
6. The method for preparing a melt-blown cloth based on plant herbal nano aluminum dust-proof and antibacterial slurry according to claim 1, wherein a plurality of fully automatic air-pressure spray guns are sprayed separately to make the plant herbal nano aluminum dust-proof and antibacterial slurry The material is sprayed and mixed in the melt blown cloth thread.
7. The method for preparing a melt-blown cloth based on herbal nano-aluminum dust-proof and antibacterial slurry according to claim 1, wherein the plant-herb nano-aluminum dust-proof and antibacterial slurry can be mixed with the melt-blown cloth material and sprayed.

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