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CN-121990922-A - Hydrophilic antibacterial mildew preventive, synthesis method thereof, mildew-proof antibacterial hydrophilic coating and application thereof

CN121990922ACN 121990922 ACN121990922 ACN 121990922ACN-121990922-A

Abstract

The invention belongs to the technical field of coating materials, and particularly relates to a hydrophilic antibacterial mildew preventive, a synthesis method thereof, a mildew-proof antibacterial hydrophilic coating and application thereof. The preparation raw materials comprise thymol and glycidyl methacrylate. According to the hydrophilic antibacterial mildew inhibitor, the thymol grafted glycidyl methacrylate with antibacterial performance provides an active site for subsequent reaction with acrylic resin and a curing agent, so that the hydrophilic antibacterial mildew inhibitor can be crosslinked with the acrylic resin and the curing agent in the coating to form a crosslinked structure with antibacterial effect, the crosslinked structure can improve the stability and mechanical performance of the coating, and the structural integrity of the coating can be maintained in a complex environment, so that the antibacterial effect can be continuously exerted, and the growth of various moulds and bacteria can be effectively inhibited.

Inventors

  • ZHANG LIANGHAO
  • XU FANG
  • WU CHUNREN
  • WU WEI

Assignees

  • 广东瑞和新材料有限公司

Dates

Publication Date
20260508
Application Date
20260121

Claims (10)

  1. 1. A hydrophilic antibacterial mildew preventive is characterized by having the following structural formula: 。
  2. 2. The hydrophilic antibacterial and mildew preventive according to claim 1, wherein the raw materials for preparation comprise: thymol and glycidyl methacrylate.
  3. 3. The hydrophilic antibacterial mildew preventive according to claim 2, wherein the molar ratio of thymol to glycidyl methacrylate is 1:1.5-2.
  4. 4. A method for synthesizing the hydrophilic antibacterial mildew preventive according to any one of claims 1 to 3, comprising the steps of: Thymol and glycidyl methacrylate are mixed and reacted and then purified.
  5. 5. The method for synthesizing a hydrophilic antibacterial and antifungal agent in accordance with claim 4 wherein the mixing reaction comprises the steps of: Under inert atmosphere, the mixture of thymol, glycidyl methacrylate and catalyst is stirred for reaction.
  6. 6. The method for synthesizing a hydrophilic antibacterial and antifungal agent according to claim 5, wherein at least one of the following characteristics (1) to (6) is satisfied: (1) The inert atmosphere comprises one of nitrogen, argon and helium; (2) The catalyst comprises triphenylphosphine; (3) The mass of the catalyst is 0.5% -0.6% of the mass of thymol; (4) The temperature rising rate of the stirring reaction is 0.5-3 ℃ per minute; (5) The temperature of the stirring reaction is 80-90 ℃; (6) The stirring reaction time is 3-5 h.
  7. 7. The mildew-proof antibacterial hydrophilic coating is characterized by comprising the following raw materials in parts by weight: 30-55 parts of acrylic copolymer resin, 8-12 parts of propylene glycol n-propyl ether, 0.3-0.7 part of primary alkyl sodium sulfonate, 0.3-0.7 part of tween 85, 0.8-1.2 parts of curing agent, 0.8-1.2 parts of antibacterial mildew preventive, 0.8-1.2 parts of nano silver solution and 30-55 parts of water; The antibacterial mildew preventive comprises the hydrophilic antibacterial mildew preventive according to any one of claims 1 to 3.
  8. 8. The mildew-resistant antimicrobial hydrophilic coating according to claim 7, wherein the acrylic copolymer resin is prepared from the following raw materials: monomer mixture, initiator and stopping agent; Wherein the monomer mixture comprises hydroxypropyl acrylate, 3-sulfopropyl methacrylate potassium salt, butyl acrylate, styrene and acrylic acid.
  9. 9. The mildew-resistant antimicrobial hydrophilic coating according to claim 8, wherein at least one of the following (1) to (5) characteristics is satisfied: (1) The molar ratio of the hydroxypropyl acrylate to the 3-sulfopropyl methacrylate potassium salt to the butyl acrylate to the styrene to the acrylic acid is 2-6:1-2.5:3-10:2-5.5:1; (2) The initiator comprises azobisisobutyronitrile; (3) The mass of the initiator is 0.5% -0.6% of the mass of the monomer mixture; (4) The stopping agent comprises hydroquinone; (5) The mass of the stopping agent is 0.02% -0.03% of the mass of the monomer mixture.
  10. 10. Use of a mildew-proof antibacterial hydrophilic coating according to any one of claims 7 to 9 in the field of coating materials.

Description

Hydrophilic antibacterial mildew preventive, synthesis method thereof, mildew-proof antibacterial hydrophilic coating and application thereof Technical Field The invention belongs to the technical field of coating materials, and particularly relates to a hydrophilic antibacterial mildew preventive, a synthesis method thereof, a mildew-proof antibacterial hydrophilic coating and application thereof. Background The air conditioner is widely applied in modern life, and the aluminum foil of the air conditioner is used as a key material of a radiator fin of the air conditioner, and the performance of the aluminum foil directly influences the heat dissipation efficiency and the service life of the air conditioner. With the improvement of life quality requirements of people, the mildew-proof antibacterial and hydrophilic properties of the air-conditioning aluminum foil are increasingly important besides the basic heat dissipation performance requirements. Under the humid environment, mould and bacteria are easy to grow in the air conditioner, and the microorganisms not only can generate peculiar smell, but also can spread along with wind blown out by the air conditioner, so that the indoor air quality is influenced, and the human health is endangered. In order to solve the problem, most of the prior art realizes the mildew-proof and antibacterial effects of the paint by means of physical mixing or grafting of quaternary ammonium salt, namely, in a patent publication CN112724770A, a quaternary ammonium salt monomer with an antibacterial function and an acrylic acid monomer are copolymerized to generate structural antibacterial acrylic resin, and the structural antibacterial acrylic resin is mixed with an antibacterial inorganic nano material, a curing agent, a wetting agent, a cosolvent, water and the like to obtain the antibacterial mildew-proof hydrophilic paint. The quaternary ammonium salt copolymerization grafting mode has a certain degree of antibacterial spectrum limitation, the inhibition effect on spore bacteria or part of salt-tolerant mold is weak, and the risk of drug resistance can be generated after the quaternary ammonium salt is used for a long time. In patent publication CN103865276A, thymol and B-cyclodextrin molecules are selected, and then subjected to heat preservation and vibration by a saturated aqueous solution method, and then a spray drying technology is used for preparing the inclusion compound. In the preparation process of the antibacterial edible packaging film, the inclusion compound is added into a film forming solution taking gelatin as a carrier, and the film is formed by casting and drying under natural conditions, so that the antibacterial edible packaging with the controlled release function is prepared. Although the slow release effect can be achieved by clathrating thymol with cyclodextrin molecules, the use of the air conditioner requires the punching processing of volatile oil, condensate water can be repeatedly washed when the air conditioner is used for a long time, and the effect of independent physical coating is difficult to achieve the long-term stable mildew-proof antibacterial effect. Disclosure of Invention In order to solve the problems, the invention provides a hydrophilic antibacterial mildew preventive, a synthesis method thereof, a mildew-proof antibacterial hydrophilic coating and application thereof. To solve at least one of the above technical problems. The invention is realized by the following technical scheme: in a first aspect, the present invention provides a hydrophilic antimicrobial mildewcide having the structural formula: 。 in a second aspect, the invention provides a method for synthesizing the hydrophilic antibacterial mildew inhibitor, which comprises the following steps: Thymol and glycidyl methacrylate are mixed and reacted and then purified. In a third aspect, the invention provides a mildew-proof antibacterial hydrophilic coating, which comprises the following raw materials in parts by weight: 30-55 parts of acrylic copolymer resin, 8-12 parts of propylene glycol n-propyl ether, 0.3-0.7 part of primary alkyl sodium sulfonate, 0.3-0.7 part of tween 85, 0.8-1.2 parts of curing agent, 0.8-1.2 parts of antibacterial mildew preventive, 0.8-1.2 parts of nano silver solution and 30-55 parts of water; the antibacterial mildew preventive comprises the hydrophilic antibacterial mildew preventive. In a fourth aspect, the invention provides an application of the mildew-proof antibacterial hydrophilic coating in the field of coating materials. Compared with the prior art, the hydrophilic antibacterial mildew preventive provided by the invention has at least the following beneficial technical effects: According to the hydrophilic antibacterial mildew inhibitor, the thymol grafted glycidyl methacrylate with antibacterial performance provides an active site for subsequent reaction with acrylic resin and a curing agent, so that the hydrophilic antibacterial m