Roller coating polyester nano antibacterial coating with lasting antibacterial property and preparation method thereof

Abstract

The invention discloses a roller coating polyester nano antibacterial coating with lasting antibacterial property and a preparation method. The roller coating polyester nano antibacterial coating is prepared from the following raw materials in percentage by weight: 50 to 60 percent of bio-based amino sugar polymer, 5 to 10 percent of silver salt based on recycled silver, 1 to 3 percent of nano antibacterial agent, 3 to 5 percent of menthol, 1 to 2 percent of defoaming agent, 5 to 10 percent of solvent and 5 to 10 percent of regulator. Through the design, silver ions and menthol can effectively inhibit growth of bacteria and prevent bacteria from further processing odorless sweat into body odor, while compared with a volatile organic compound causing the body odor, ASP has opposite charges and is combined with the volatile organic compound through a chemical absorption effect to form a salt, so that the body odor can be effectively inhibited. The salt dissolves during a subsequent washing process, and the odor control function can be reset after each washing, thereby preventing the generation of permanent odor.

Description

Technical Field

[0001] The invention belongs to the technical field of nano antibacterial coatings, and in particular relates to an antibacterial and durable roller-coated polyester nano antibacterial coating and a preparation method thereof. Background Art

[0002] Synthetic fibers are generally considered to be more likely to produce odor than natural fibers. Through sweating, the human body transports substances such as lipids and sugars to the skin surface and attaches them to textile clothing. Bacteria can grow on these textile clothing, doubling their growth every 20 minutes. Bacteria are one of the main sources of odor and physical discomfort, especially on synthetic fabrics, where odor is more likely to occur. Therefore, in the production of textiles, antibacterial coatings are applied to the textiles to achieve ultra-long antibacterial functions.

[0003] Existing antibacterial coatings use too many chemical materials. When applied to fibers, they will have a certain impact on the skin when in contact with the human body. The overall irritation is relatively large, and the addition of too much chemical dosage will increase the preparation cost. At the same time, the effect of inhibiting bacterial growth is not good. Therefore, there are great limitations in actual use and there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to provide an antibacterial and durable roller-coated polyester nano-antibacterial coating and a preparation method thereof, so as to solve the problem that the existing antibacterial coatings mentioned in the above background technology are insufficient in terms of the effect of preventing bacterial growth.

[0005] To achieve the above object, the present invention provides the following technical solution: an antibacterial and durable roller-coated polyester nano-antibacterial coating, the roller-coated polyester nano-antibacterial coating is composed of the following raw materials and weight ratios: 50-60% bio-based amino sugar polymer, 5-10% silver salt based on recycled silver, 1-3% nano antibacterial agent, 3-5% menthol, 1-2% defoaming agent, 5-10% solvent, and 5-10% regulator.

[0006] As a preferred technical solution in the present invention, the roller-coated polyester nano antibacterial coating is composed of the following raw materials and weight ratios: 60% bio-based amino sugar polymer, 10% silver salt based on recycled silver, 3% nano antibacterial agent, 5% menthol, 2% defoaming agent, 10% solvent, and 10% regulator.

[0007] As a preferred technical solution of the present invention, the defoaming agent is one or more of organic siloxane, polyether, silicon and ether grafted, amine-containing, imine and amide.

[0008] The present invention also discloses a method for preparing a durable antibacterial roll-coated polyester nano antibacterial coating, comprising a roll-coated polyester nano antibacterial coating, and the specific preparation method is as follows: Step 1: Mix the bio-based amino sugar polymer with an appropriate amount of solvent, heat at 50-180°C until completely dissolved, and stir at a stirring speed of 100-300 r / min for 15-25 minutes. Remember to add the recycled silver salt solution and continue stirring for 5-8 minutes to ensure uniform dispersion; Step 2: gradually add the prepared nano antibacterial agent into the mixture and stir for 5 to 6 minutes to ensure that it is evenly dispersed; Step 3: Add menthol to the mixture, stir for 6 to 8 minutes, and add a defoamer; Step 4: Add a regulator, where the regulator is a diluent or thickener to adjust the viscosity of the coating to achieve ideal coating performance; Step 5: Homogenize the coating in step 4 to ensure uniformity and stability of all components.

[0009] As a preferred technical solution of the present invention, the preparation method of the silver salt based on silver recovery is as follows: S1. Collect raw materials, collect silver-containing waste or raw materials, such as photographic film, silver paste or silver electrode, silver-containing wastewater; S2, leaching and extraction, using sodium hydroxide, nitric acid or sulfuric acid to treat the silver-containing material to promote the dissolution of silver. For solid materials, silver is extracted by acid washing or electrolysis; S3, refining and precipitation, reacting the dissolved silver ions with sodium chloride, sodium sulfide, etc. to form insoluble silver salts, separating the precipitate by filtration, and washing with deionized water or other suitable solvents to remove impurities; S4. Dry the precipitate by heating or under vacuum conditions to obtain the desired silver salt powder.

[0010] As a preferred technical solution of the present invention, the preparation method of the bio-based amino sugar polymer is as follows: S1. Raw material selection: Choose appropriate bio-based amino sugars as raw materials. Common ones include: glucosamine, lactose, and chitosan. S2. Pre-reaction treatment: pre-treat the raw materials to improve the reaction efficiency: Purification: removal of impurities by water washing, solvent extraction, etc.; Drying: remove moisture to increase reactivity; S3, subjecting the amino sugar to a polycondensation reaction under acid or alkaline reaction conditions to form a polymer chain, and for cyclic amino sugars, opening the ring thereof by heating or the action of a catalyst to form a polymer; S4, polymer separation, adding alcohols or salts to precipitate the polymer, followed by filtration and separation, and then washing the polymer with deionized water to remove unreacted monomers and by-products; S5, drying and processing, vacuum drying or heating drying the separated polymer to obtain a final polymer powder.

[0011] As a preferred technical solution in the present invention, the solvent in step 1 includes water, propylene glycol methyl ether acetate, dibasic acid ester, and cyclohexanone.

[0012] As a preferred technical solution of the present invention, in step five, the homogenization treatment sequentially uses a high-pressure homogenizer for emulsions and suspensions to break up particles, and an ultrasonic homogenizer to promote mixing through ultrasonic vibration for low-viscosity liquids.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Through the design of the present invention, silver ions and menthol can effectively inhibit bacterial growth and prevent bacteria from further processing odorless sweat into body odor. Compared with the volatile organic compounds that cause body odor, the amino sugar polymer ASP has an opposite charge. Through chemical absorption, it combines with volatile organic compounds to form a salt that dissolves in the subsequent washing process. The odor control function can be reset after each wash, thereby preventing the generation of permanent odor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the steps of the present invention. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0016] See also Figure 1 The present invention provides a technical solution: an antibacterial and durable roller-coated polyester nano-antibacterial coating, which is composed of the following raw materials and weight ratios: 50-60% bio-based amino sugar polymer, 5-10% silver salt based on recycled silver, 1-3% nano antibacterial agent, 3-5% menthol, 1-2% defoaming agent, 5-10% solvent, and 5-10% regulator.

[0017] In this embodiment, the roller-coated polyester nano antibacterial coating is composed of the following raw materials and weight ratios: 60% bio-based amino sugar polymer, 10% silver salt based on recycled silver, 3% nano antibacterial agent, 5% menthol, 2% defoaming agent, 10% solvent, and 10% regulator.

[0018] In this embodiment, the defoaming agent is one or more of organic siloxane, polyether, silicon and ether grafted, amine-containing, imine and amide.

[0019] The present invention also discloses a method for preparing a durable antibacterial roll-coated polyester nano antibacterial coating, comprising a roll-coated polyester nano antibacterial coating, and the specific preparation method is as follows: Step 1: Mix the bio-based amino sugar polymer with an appropriate amount of solvent, heat at 50°C until completely dissolved, and stir at a stirring speed of 100 r / min for 15 minutes. Remember to add the recycled silver salt solution and continue stirring for 5 minutes to ensure uniform dispersion; Step 2: gradually add the prepared nano antibacterial agent into the mixture and stir for 5 minutes to ensure that it is evenly dispersed; Step 3: Add menthol to the mixture, stir for 6 minutes, and add defoamer; Step 4: Add a regulator, where the regulator is a diluent or thickener to adjust the viscosity of the coating to achieve ideal coating performance; Step 5: Homogenize the coating in step 4 to ensure uniformity and stability of all components.

[0020] In this embodiment, the preparation method of silver salt based on silver recovery is as follows: S1. Collect raw materials, collect silver-containing waste or raw materials, such as photographic film, silver paste or silver electrode, silver-containing wastewater; S2, leaching and extraction, using sodium hydroxide, nitric acid or sulfuric acid to treat the silver-containing material to promote the dissolution of silver. For solid materials, silver is extracted by acid washing or electrolysis; S3, refining and precipitation, reacting the dissolved silver ions with sodium chloride, sodium sulfide, etc. to form insoluble silver salts, separating the precipitate by filtration, and washing with deionized water or other suitable solvents to remove impurities; S4. Dry the precipitate by heating or under vacuum conditions to obtain the desired silver salt powder.

[0021] In this embodiment, the preparation method of the bio-based amino sugar polymer is as follows: S1. Raw material selection: Choose appropriate bio-based amino sugars as raw materials. Common ones include: glucosamine, lactose, and chitosan. S2. Pre-reaction treatment: pre-treat the raw materials to improve the reaction efficiency: Purification: removal of impurities by water washing, solvent extraction, etc.; Drying: remove moisture to increase reactivity; S3, subjecting the amino sugar to a polycondensation reaction under acid or alkaline reaction conditions to form a polymer chain, and for cyclic amino sugars, opening the ring thereof by heating or the action of a catalyst to form a polymer; S4, polymer separation, adding alcohols or salts to precipitate the polymer, followed by filtration and separation, and then washing the polymer with deionized water to remove unreacted monomers and by-products; S5, drying and processing, vacuum drying or heating drying the separated polymer to obtain a final polymer powder.

[0022] In this embodiment, the solvent in step 1 includes water, propylene glycol methyl ether acetate, dibasic acid ester, and cyclohexanone.

[0023] In this embodiment, in step five, the homogenization treatment sequentially uses a high-pressure homogenizer for emulsions and suspensions, crushing particles, and an ultrasonic homogenizer to promote mixing through ultrasonic vibration for low-viscosity liquids. Example 2

[0024] The difference from the embodiment 1 is that the present invention also discloses a method for preparing a durable antibacterial roller-coated polyester nano-antibacterial coating, including a roller-coated polyester nano-antibacterial coating, and the specific preparation method is as follows: Step 1: Mix the bio-based amino sugar polymer with an appropriate amount of solvent, heat at 100°C until completely dissolved, and stir at a stirring speed of 200r / min for 20min. Remember to add the recycled silver salt solution and continue stirring for 6min to ensure uniform dispersion; Step 2: gradually add the prepared nano antibacterial agent into the mixture and stir for 6 minutes to ensure that it is evenly dispersed; Step 3: Add menthol to the mixture, stir for 7 minutes, and add defoamer; Step 4: Add a regulator, where the regulator is a diluent or thickener to adjust the viscosity of the coating to achieve ideal coating performance; Step 5: Homogenize the coating in step 4 to ensure uniformity and stability of all components. Example 3

[0025] The difference from the above embodiment is that: the present invention also discloses a method for preparing a durable antibacterial roller-coated polyester nano-antibacterial coating, including a roller-coated polyester nano-antibacterial coating, and the specific preparation method is as follows: Step 1: Mix the bio-based amino sugar polymer with an appropriate amount of solvent, heat at 180°C until completely dissolved, and stir at a stirring speed of 300r / min for 25min. Remember to add the recycled silver salt solution and continue stirring for 8min to ensure uniform dispersion; Step 2: gradually add the prepared nano antibacterial agent into the mixture and stir for 6 minutes to ensure that it is evenly dispersed; Step 3: Add menthol to the mixture, stir for 8 minutes, and add defoamer; Step 4: Add a regulator, where the regulator is a diluent or thickener to adjust the viscosity of the coating to achieve ideal coating performance; Step 5: Homogenize the coating in step 4 to ensure uniformity and stability of all components.

[0026] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antibacterial and durable roller-coated polyester nano antibacterial coating, characterized in that: The roller-coated polyester nano antibacterial coating is composed of the following raw materials and weight ratio composition: 50-60% bio-based amino sugar polymer, 5-10% silver salt based on recycled silver, 1-3% nano antibacterial agent, 3-5% menthol, 1-2% defoaming agent, 5-10% solvent, and 5-10% regulator.

2. The antibacterial and durable roller-coated polyester nano antibacterial coating according to claim 1, characterized in that: The roller-coated polyester nano antibacterial coating is composed of the following raw materials and weight ratios: 60% bio-based amino sugar polymer, 10% silver salt based on recycled silver, 3% nano antibacterial agent, 5% menthol, 2% defoamer, 10% solvent, and 10% regulator.

3. The antibacterial and durable roller-coated polyester nano antibacterial coating according to claim 1, characterized in that: The defoamer is one or more of organic siloxane, polyether, silicon and ether grafted, amine-containing, imine and amide.

4. A method for preparing an antibacterial and durable roller-coated polyester nano-antibacterial coating, comprising the roller-coated polyester nano-antibacterial coating according to any one of claims 1 to 3, characterized in that: The specific preparation method is as follows: Step 1: Mix the bio-based amino sugar polymer with an appropriate amount of solvent, heat at 50-180°C until completely dissolved, and stir at a stirring speed of 100-300 r / min for 15-25 minutes. Remember to add the recycled silver salt solution and continue stirring for 5-8 minutes to ensure uniform dispersion; Step 2: gradually add the prepared nano antibacterial agent into the mixture and stir for 5 to 6 minutes to ensure that it is evenly dispersed; Step 3: Add menthol to the mixture, stir for 6 to 8 minutes, and add a defoamer; Step 4: Add a regulator, where the regulator is a diluent or thickener to adjust the viscosity of the coating to achieve ideal coating performance; Step 5: Homogenize the coating in step 4 to ensure uniformity and stability of all components.

5. The method for preparing a durable antibacterial roller-coated polyester nano antibacterial coating according to claim 4, characterized in that: The preparation method of the silver salt based on silver recovery is as follows: S1. Collect raw materials, collect waste or raw materials containing silver; S2, leaching and extraction, using sodium hydroxide, nitric acid or sulfuric acid to treat the silver-containing material to promote the dissolution of silver. For solid materials, silver is extracted by acid washing or electrolysis; S3, refining and precipitation, reacting the dissolved silver ions with sodium chloride, sodium sulfide, etc. to form insoluble silver salts, separating the precipitate by filtration, and washing with deionized water or other suitable solvents to remove impurities; S4. Dry the precipitate by heating or under vacuum conditions to obtain the desired silver salt powder.

6. The method for preparing a durable antibacterial roller-coated polyester nano antibacterial coating according to claim 4, characterized in that: The preparation method of the bio-based amino sugar polymer is as follows: S1. Raw material selection: Choose appropriate bio-based amino sugars as raw materials. Common ones include: glucosamine, lactose, and chitosan. S2. Pre-reaction treatment: pre-treat the raw materials to improve the reaction efficiency: Purification: removal of impurities by water washing, solvent extraction, etc.; Drying: remove moisture to increase reactivity; S3, subjecting the amino sugar to a polycondensation reaction under acid or alkaline reaction conditions to form a polymer chain, and for cyclic amino sugars, opening the ring thereof by heating or the action of a catalyst to form a polymer; S4, polymer separation, adding alcohols or salts to precipitate the polymer, followed by filtration and separation, and then washing the polymer with deionized water to remove unreacted monomers and by-products; S5, drying and processing, vacuum drying or heating drying the separated polymer to obtain a final polymer powder.

7. The method for preparing a durable antibacterial roller-coated polyester nano antibacterial coating according to claim 4, characterized in that: The solvent in step 1 includes water, propylene glycol methyl ether acetate, dibasic acid ester, and cyclohexanone.

8. The method for preparing a durable antibacterial roller-coated polyester nano antibacterial coating according to claim 4, characterized in that: In step five, the homogenization treatment sequentially uses a high-pressure homogenizer for emulsions and suspensions to break up particles, and an ultrasonic homogenizer to promote mixing through ultrasonic vibration for low-viscosity liquids.

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