Antibacterial fabric as well as preparation method and application thereof

Abstract

The invention discloses an antibacterial fabric as well as a preparation method and application thereof, and belongs to the technical field of antibiosis. The antibacterial fabric comprises a non-woven fabric and an antibacterial coating coated on the surface of the non-woven fabric, and the antibacterial coating comprises the following components: 5-10 parts of attapulgite powder, 5-10 parts of reducing glue, 1-5 parts of white carbon black, 28-36 parts of sodium chlorite, 15-20 parts of white glue, 5-10 parts of a silicon solution, 4-9 parts of sodium percarbonate and 10-15 parts of a silicone oil emulsion. The antibacterial fabric provided by the invention has remarkable advantages in the aspects of functionality, safety, cost effectiveness, durability, comfort and environmental adaptability, is good in antibacterial property, has the antibacterial rate of not less than 99%, and can quickly decompose formaldehyde and ammonia gas at the same time.

Description

Technical Field

[0001] This invention belongs to the field of antibacterial technology, specifically to an antibacterial fabric, its preparation method, and its application. Background Technology

[0002] Antimicrobial fabrics are fabrics that have undergone special treatment or have antimicrobial substances added, giving them the ability to inhibit or kill microorganisms such as bacteria, fungi, and viruses. These fabrics effectively reduce the growth and reproduction of bacteria on the fabric, thereby lowering the risk of infection. Antimicrobial fabrics are commonly used in medical, hygiene, home, and clothing fields, providing better hygiene and health protection.

[0003] The antibacterial principles of antibacterial fabrics mainly include physical antibacterial, biological antibacterial, and chemical antibacterial.

[0004] Physical antimicrobial fabrics refer to a technology that imparts antimicrobial properties to textiles through physical means. This involves altering the surface properties and structure of the fabric or introducing specific physical effects to inhibit or kill bacteria, fungi, and other microorganisms. Physical antimicrobial fabrics offer a solution different from chemical antimicrobial treatments, with unique advantages in reducing chemical residues and avoiding drug resistance. However, in practical applications, their antimicrobial efficacy, durability, and safety must be comprehensively considered. Furthermore, physical antimicrobial treatment processes can be complex, increasing production costs. Additionally, implementing physical antimicrobial technology on certain special fabric materials is challenging, thus limiting its application scenarios.

[0005] Bio-antimicrobial fabrics refer to novel functional fabrics that acquire antimicrobial properties from textiles through biotechnology or natural bioactive substances. The antimicrobial principle of these fabrics is primarily based on the antimicrobial activity of organisms (such as enzymes, microorganisms, plant extracts, etc.) or their metabolites, inhibiting or killing bacteria, fungi, and other harmful microorganisms on the fabric surface. The antimicrobial effect of bio-antimicrobial components can be significantly affected by environmental factors such as temperature, humidity, light, and pH. Furthermore, firmly binding bio-antimicrobial components to fabric fibers or creating stable bio-antimicrobial finishing agents requires advanced technology, involves complex processes, and may result in relatively high costs, thus limiting their widespread application at present.

[0006] Chemically antibacterial fabrics refer to fabrics that inhibit or kill microorganisms through chemical substances. These effects can be achieved by adding antibacterial substances such as silver ions, copper ions, zinc ions, oxidants, preservatives, antibiotics, and synthetic antibacterial drugs to inhibit microbial growth and reproduction, or by adding oxidants and preservatives to disrupt the cell structure of microorganisms. While chemical antibacterial agents are widely used in various fields, including medical, hygiene, industrial, agricultural, and daily necessities, their application requires careful attention to safety and ecotoxicity to avoid overuse that could lead to increased microbial resistance and potential harm to humans and the environment.

[0007] The demand for antimicrobial fabrics is increasing in medical, hygiene, and home applications. Existing antimicrobial fabrics often rely on heavy metal ions, such as silver ions, to achieve their antimicrobial effects. These materials suffer from high cost, safety concerns, and environmental compatibility issues. Therefore, developing a new type of antimicrobial fabric that is both safe and highly effective is of great significance. Summary of the Invention

[0008] To address the above problems, the present invention provides an antibacterial fabric that is simple to produce, low in cost, highly safe, comfortable, widely adaptable to the environment, and has good antibacterial effects.

[0009] The antibacterial fabric includes a nonwoven fabric and an antibacterial coating applied to the surface of the nonwoven fabric. The antibacterial coating comprises the following components: 5-10 parts attapulgite powder, 5-10 parts reducing gum, 1-5 parts silica, 28-36 parts sodium chlorite, 15-20 parts white glue, 5-10 parts silicone solution, 4-9 parts sodium percarbonate, and 10-15 parts silicone oil emulsion.

[0010] Attapulgite powder can improve the adsorption performance and stability of nonwoven fabrics, giving them certain dehumidification, deodorization, or environmental purification functions; reducing gum, as an adhesive, can form a uniform coating on the surface of nonwoven fabrics, enhancing the adhesion between nonwoven fabrics and other materials; silica, as a reinforcing filler, can significantly improve the hardness and wear resistance of the nonwoven fabric surface coating, while also enhancing its weather resistance and anti-aging properties, making the nonwoven fabric surface coating more durable; an appropriate amount of sodium chlorite can play a certain bactericidal role, giving the nonwoven fabric surface better hygienic conditions; white glue, as an adhesive, can make the slurry adhere better to the nonwoven fabric surface, enhancing the bonding force between the coating and the nonwoven fabric, and white glue has good toughness and durability, which helps to improve the overall performance of the nonwoven fabric surface coating; silicone solution can impart good waterproof, oil-proof, and breathable properties to nonwoven fabrics through film formation; sodium percarbonate acts as a stabilizer for sodium chlorite; silicone oil emulsion can effectively reduce the surface friction coefficient of nonwoven fabrics, improving the softness and smoothness of nonwoven fabrics. When this composite paste is coated onto the surface of nonwoven fabric, it can give the nonwoven fabric multiple functions such as adsorption, bonding, reinforcement, waterproofing, breathability, and antibacterial properties.

[0011] Preferably, the antibacterial coating comprises the following components: 5-8 parts attapulgite powder, 7-10 parts reducing gum, 1-3 parts silica, 31-36 parts sodium chlorite, 18-20 parts white glue, 5-7 parts silicone solution, 6-9 parts sodium percarbonate, and 12-15 parts silicone oil emulsion.

[0012] Preferably, the amount of the antibacterial coating is 2-3 g / m³. 2 .

[0013] Preferably, the nonwoven fabric includes needle-punched nonwoven fabric or spunlace nonwoven fabric.

[0014] More preferably, the nonwoven fabric includes polypropylene nonwoven fabric.

[0015] The method for preparing the antibacterial fabric includes the following steps:

[0016] S1. Weigh out attapulgite powder, reducing gum, silica, sodium chlorite, white glue, silicone solution, sodium percarbonate, and silicone oil emulsion according to the mass ratio, and stir evenly to obtain the slurry of the coating.

[0017] S2. The slurry obtained in step S1 is coated onto the surface of the nonwoven fabric and dried to obtain the antibacterial fabric.

[0018] Preferably, the nonwoven fabric undergoes an electret treatment before coating. After the electret treatment, the nonwoven fabric acquires electrostatic adsorption capabilities.

[0019] Preferably, the conditions for the electret treatment are: electret voltage of 45-55kV and electret distance of 4-6cm.

[0020] Preferably, the drying temperature is 50–80°C.

[0021] The application of the aforementioned antibacterial fabric in face masks.

[0022] The antibacterial fabric is used as the middle filter layer of the mask.

[0023] Preferably, when the antibacterial fabric is used as the middle filter layer of a mask, it is laminated with a high-oxygen membrane, or the antibacterial fabric is sprayed with a high-oxygen membrane slurry.

[0024] Preferably, the areal density of the high-oxygen membrane is 1-2 g / m³. 2 The spraying amount of the high-oxygen film slurry is 1-2 g / m³. 2 .

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The present invention uses a composite slurry with a specific ratio to coat the surface of a nonwoven fabric, so that the antibacterial fabric has good antibacterial properties and an antibacterial rate of not less than 99%.

[0027] 2. The materials used in this invention are low-cost, and the process is simple and easy to implement. It can be mass-produced without increasing production costs too much, resulting in good economic benefits.

[0028] 3. The materials selected in this invention are safe and non-toxic, and are friendly to the human body and the environment. They are suitable for use in medical and health products such as masks. They not only have excellent antibacterial properties, but can also quickly decompose formaldehyde and ammonia, ensuring the safety and comfort of users.

[0029] 4. The antibacterial fabric provided by this invention has significant advantages in terms of functionality, cost-effectiveness, comfort and environmental adaptability, and has great market potential and application prospects. Detailed Implementation

[0030] The technical solution of the present invention will be further described and illustrated below through examples. All raw materials used in the examples are commercially available or prepared using conventional methods.

[0031] Example 1

[0032] An antibacterial fabric includes a nonwoven fabric and an antibacterial coating applied to the surface of the nonwoven fabric. The nonwoven fabric is a spunlace polypropylene nonwoven fabric. The antibacterial coating comprises the following components: 10 parts attapulgite powder, 10 parts reducing gum, 1 part silica, 36 parts sodium chlorite, 15 parts white glue, 10 parts silicone solution, 9 parts sodium percarbonate, and 10 parts silicone oil emulsion. The coating amount of the antibacterial coating is 2-3 g / m². 2 .

[0033] The polyester or polypropylene nonwoven fabric is produced by adding hindered phenolic antioxidants, such as Irganox 1010, or phosphite antioxidants, such as Irgafos 168.

[0034] The antibacterial fabric is prepared by the following steps:

[0035] S1. Weigh out attapulgite powder, reducing gum, silica, sodium chlorite, white glue, silicone solution, sodium percarbonate, and silicone oil emulsion according to the above mass ratio, stir evenly, and obtain the slurry of the antibacterial coating.

[0036] S2. The slurry obtained in step S1 is coated onto the surface of polypropylene spunlace nonwoven fabric that has undergone electret treatment (electret voltage of 45-55kV and electret distance of 4-6cm). Then, it is dried at 80°C. After drying, the above-mentioned antibacterial fabric is obtained.

[0037] Example 2

[0038] An antibacterial fabric includes a nonwoven fabric and an antibacterial coating applied to the surface of the nonwoven fabric. The nonwoven fabric is a spunlace polypropylene nonwoven fabric. The antibacterial coating comprises the following components: 5 parts attapulgite powder, 5 parts reducing gum, 5 parts silica, 28 parts sodium chlorite, 20 parts white glue, 5 parts silica solution, 4 parts sodium percarbonate, and 15 parts silicone oil emulsion. The coating amount of the antibacterial coating is 2-3 g / m². 2 .

[0039] The polyester or polypropylene nonwoven fabric is produced by adding hindered phenolic antioxidants, such as Irganox 1010, or phosphite antioxidants, such as Irgafos 168.

[0040] The antibacterial fabric is prepared by the following steps:

[0041] S1. Weigh out attapulgite powder, reducing gum, silica, sodium chlorite, white glue, silicone solution, sodium percarbonate, and silicone oil emulsion according to the above mass ratio, and stir evenly to obtain the slurry of the coating.

[0042] S2. The slurry obtained in step S1 is coated onto the surface of polypropylene needle-punched nonwoven fabric that has undergone electret treatment (electret voltage of 45-55kV and electret distance of 4-6cm). Then, it is dried at 70°C. After drying, the above-mentioned antibacterial fabric is obtained.

[0043] Example 3

[0044] An antibacterial fabric includes a nonwoven fabric and an antibacterial coating applied to the surface of the nonwoven fabric. The nonwoven fabric is a spunlace polypropylene nonwoven fabric. The antibacterial coating comprises the following components: 8 parts attapulgite powder, 7 parts reducing gum, 3 parts silica, 31 parts sodium chlorite, 18 parts white glue, 7 parts silicone solution, 6 parts sodium percarbonate, and 12 parts silicone oil emulsion. The coating amount of the antibacterial coating is 2-3 g / m². 2 .

[0045] The polyester or polypropylene nonwoven fabric is produced by adding hindered phenolic antioxidants, such as Irganox 1010, or phosphite antioxidants, such as Irgafos 168.

[0046] The antibacterial fabric is prepared by the following steps:

[0047] S1. Weigh out attapulgite powder, reducing gum, silica, sodium chlorite, white glue, silicone solution, sodium percarbonate, and silicone oil emulsion according to the above mass ratio, and stir evenly to obtain the slurry of the coating.

[0048] S2. The slurry obtained in step S1 is coated onto the surface of polypropylene spunlace nonwoven fabric that has undergone electret treatment (electret voltage of 45-55kV and electret distance of 4-6cm), and then dried at 50°C. After drying, the above-mentioned antibacterial fabric is obtained.

[0049] Example 4

[0050] An antibacterial fabric includes a nonwoven fabric and an antibacterial coating applied to the surface of the nonwoven fabric. The nonwoven fabric is a spunlace polypropylene nonwoven fabric. The antibacterial coating comprises the following components: 5 parts attapulgite powder, 5 parts reducing gum, 3 parts silica, 32 parts sodium chlorite, 20 parts white glue, 10 parts silicone solution, 8 parts sodium percarbonate, and 12 parts silicone oil emulsion. The coating amount of the antibacterial coating is 2-3 g / m². 2 .

[0051] The polyester or polypropylene nonwoven fabric is produced by adding hindered phenolic antioxidants, such as Irganox 1010, or phosphite antioxidants, such as Irgafos 168.

[0052] The antibacterial fabric is prepared by the following steps:

[0053] S1. Weigh out attapulgite powder, reducing gum, silica, sodium chlorite, white glue, silicone solution, sodium percarbonate, and silicone oil emulsion according to the above mass ratio, and stir evenly to obtain the slurry of the coating.

[0054] S2. The slurry obtained in step S1 is coated onto the surface of polypropylene spunlace nonwoven fabric that has undergone electret treatment (electret voltage of 45-55kV and electret distance of 4-6cm), and then dried at 50°C. After drying, the above-mentioned antibacterial fabric is obtained.

[0055] Example 5

[0056] The antibacterial fabrics from the examples were applied to masks, with the antibacterial fabrics from Examples 1 to 4 used as the middle filter layer of the masks. The antibacterial fabric in Example 1 had a composite layer density of 1-2 g / m². 2 After applying the high-oxygen membrane (purchased from Wuhan Yanhe Environmental Science and Technology Co., Ltd.) and using the high-oxygen membrane slurry (purchased from Wuhan Yanhe Environmental Science and Technology Co., Ltd.) at a concentration of 1-2 g / m³, 2 The antibacterial fabric in Example 1 is sprayed onto the mask and then used as the middle filter layer. Each square meter of the antibacterial fabric can make 40 masks.

[0057] Detection and Analysis

[0058] 1. Antibacterial performance test of antibacterial fabrics:

[0059] According to GB / T20944.3-2008 Evaluation of Antimicrobial Properties of Textiles Part 3: Oscillation Method, Escherichia coli was used as the experimental strain to test the antimicrobial properties of the middle filter layer in the mask in Example 5. The non-woven fabrics without antimicrobial coating used in Examples 1 to 4 were used as the control group for antimicrobial performance testing to obtain the antimicrobial rate. The higher the antimicrobial rate, the better the antimicrobial performance of the antimicrobial fabric.

[0060] Table 1 Performance test results of the middle layer of the mask

[0061]

[0062]

[0063] As can be seen from Table 1, the antibacterial fabric provided by the present invention has a good antibacterial effect against Escherichia coli, with an inhibition rate of not less than 99%; and after being composited with a high-oxygen film or sprayed with a high-oxygen film slurry, its inhibition rate reaches >99.99%.

[0064] 2. Formaldehyde decomposition performance test of antibacterial fabrics:

[0065] Take 1m respectively 2 The antibacterial fabrics in Examples 1-4, respectively, were tested at 30m... 3 The test was conducted in a sealed test chamber with an ambient temperature of 23.8℃, a relative humidity of 42.2%RH, and a formaldehyde concentration of 0.045PPM. The test time required for the formaldehyde concentration to drop to 0PPM was repeated three times. The test results are shown in Table 2.

[0066] Table 2 Performance test results of antibacterial fabrics

[0067] sample Average duration (s) The filter layer is the antibacterial fabric prepared in Example 1. 4.4 The filter layer is the antibacterial fabric prepared in Example 2. 5.9 The filter layer is the antibacterial fabric prepared in Example 3. 4.8 The filter layer is the antibacterial fabric prepared in Example 4. 4.5

[0068] As can be seen from Table 2, the antibacterial fabric provided by the present invention can rapidly decompose formaldehyde.

[0069] 3. Odor-resistant performance test of antibacterial fabrics

[0070] Take 1m respectively 2 The antibacterial fabrics in Examples 1-4, respectively, were tested at 30m... 3 The test was conducted in a sealed test chamber. The ambient temperature was 23.8℃, the relative humidity was 42.2%RH, and the ammonia concentration was 0.045PPM. The test time required for the ammonia concentration to drop to 0PPM was repeated 3 times. The test results are shown in Table 3.

[0071] Table 3 Performance test results of antibacterial fabrics

[0072]

[0073]

[0074] As can be seen from Table 3, the antibacterial fabric provided by the present invention can decompose ammonia gas and eliminate odors relatively quickly.

[0075] It should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An antibacterial fabric, comprising a non-woven fabric and an antibacterial coating coated on the surface of the non-woven fabric, characterized in that: The antibacterial coating comprises the following components: 5-10 parts of attapulgite powder, 5-10 parts of reducing glue, 1-5 parts of white carbon black, 28-36 parts of sodium chlorite, 15-20 parts of white glue, 5-10 parts of silicon solution, 4-9 parts of sodium percarbonate and 10-15 parts of silicone oil emulsion.

2. The antibacterial fabric according to claim 1, characterized in that: The antibacterial coating comprises the following components: 5-8 parts of attapulgite powder, 7-10 parts of reducing glue, 1-3 parts of white carbon black, 31-36 parts of sodium chlorite, 18-20 parts of white glue, 5-7 parts of silicon solution, 6-9 parts of sodium percarbonate and 12-15 parts of silicone oil emulsion.

3. The antibacterial fabric according to claim 1, characterized in that: The coating amount of the antibacterial coating is 2-3 g / m 2 ; The non-woven fabric includes needle-punched non-woven fabric or spunlace non-woven fabric.

4. The antibacterial fabric according to claim 3, characterized in that: The nonwoven fabric comprises a polypropylene nonwoven fabric.

5. A method for preparing the antibacterial fabric according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Weigh attapulgite powder, reduced rubber, white carbon black, sodium chlorite, white glue, silicon solution, sodium percarbonate, and silicone oil emulsion according to the mass ratio, and stir evenly to obtain the slurry of the antibacterial coating; S2. Coating the slurry prepared in step S1 on the surface of the non-woven fabric, and drying the non-woven fabric to obtain the antibacterial fabric.

6. The method for preparing antibacterial fabric according to claim 5, characterized in that: The nonwoven fabric is subjected to an electret treatment before coating.

7. The method for preparing antibacterial fabric according to claim 6, characterized in that: The conditions of the electret treatment are: the electret voltage is 45-55 kV, and the electret distance is 4-6 cm.

8. The method for preparing antibacterial fabric according to claim 5, characterized in that: The temperature of the drying treatment is 50-80°C.

9. Use of the antibacterial fabric according to any one of claims 1 to 4 in a mask, characterized in that: The antibacterial fabric is used as the middle filter layer of the mask.

10. The use of the antibacterial fabric in a mask according to claim 9, characterized in that: When the antibacterial fabric is used as the middle filter layer of the mask, a layer of high oxygen film is compounded, or the antibacterial fabric is sprayed with high oxygen film slurry; the surface density of the high oxygen film is 1-2g / m 2 ; The spraying amount of the high oxygen film slurry is 1-2 g / m 2 .

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