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CN-121975397-A - High-antibacterial-property coating and preparation method thereof

CN121975397ACN 121975397 ACN121975397 ACN 121975397ACN-121975397-A

Abstract

The application relates to a high-antibacterial coating and a preparation method thereof, wherein the high-antibacterial coating comprises, by weight, 35-40 parts of epoxy resin, 2-6 parts of inorganic nano filler, 0.5-1.5 parts of inorganic antibacterial agent, 0.2-0.6 part of organic antibacterial agent, 1-3 parts of silane coupling agent, 8-12 parts of curing agent, 3-5 parts of diluent, 0.5-1.0 part of defoaming agent, 0.1-0.3 part of leveling agent and 50-100 parts of solvent, wherein the organic antibacterial agent is a1, 3, 5-triazine compound. The application has the effect of improving the antibacterial property of the stainless steel surface coating.

Inventors

  • MIAO CE
  • GE YINGHUA

Assignees

  • 宁波开发区安德鲁精铸有限公司

Dates

Publication Date
20260505
Application Date
20260316

Claims (9)

  1. 1. The high-antibacterial-property coating is characterized by comprising, by weight, 35-40 parts of epoxy resin, 2-6 parts of inorganic nano filler, 0.5-1.5 parts of inorganic antibacterial agent, 0.2-0.6 part of organic antibacterial agent, 1-3 parts of silane coupling agent, 8-12 parts of curing agent, 3-5 parts of diluent, 0.5-1.0 part of defoaming agent, 0.1-0.3 part of leveling agent and 50-100 parts of dimethylbenzene, wherein the organic antibacterial agent is a 1,3, 5-triazine compound.
  2. 2. The high antimicrobial coating of claim 1, wherein the inorganic nanofiller is at least one of nano SiO 2 , nano Al 2 O 3 .
  3. 3. The high antimicrobial coating of claim 2, wherein the inorganic nanofiller is nano SiO 2 .
  4. 4. The high antimicrobial coating of claim 2, wherein the inorganic nanofiller is a mixture of nano SiO 2 and nano Al 2 O 3 .
  5. 5. The high antimicrobial coating according to claim 4, wherein the mixing mass ratio of nano SiO 2 to nano Al 2 O 3 is 1:0.15-0.25.
  6. 6. The high antimicrobial coating of claim 1, wherein the inorganic antimicrobial agent is a silver-loaded zirconium phosphate antimicrobial agent.
  7. 7. A highly antimicrobial coating according to claim 1, wherein the organic antimicrobial agent is 2-chloro-4, 6-diamino-1, 3, 5-triazine.
  8. 8. The high antimicrobial coating of claim 1, wherein the silane coupling agent is an aminosilane coupling agent.
  9. 9. A method for producing a coating having high antimicrobial properties according to any one of claims 1 to 8, comprising the steps of: Preparing an antibacterial dispersion system, namely adding the inorganic nano filler, the inorganic antibacterial agent and the silane coupling agent in the formula amount into a solvent, grinding, and fully mixing to obtain a modified dispersion liquid; Preparing a matrix solution, namely mixing the epoxy resin, the organic antibacterial agent and the diluent according to the formula amount, and uniformly stirring to obtain the epoxy resin matrix solution; Adding the modified dispersion liquid into the epoxy resin matrix solution, stirring uniformly, sequentially adding a defoaming agent and a leveling agent, heating and stirring in the whole process, adding a curing agent after uniformly mixing, and stirring to obtain the high-antibacterial-property coating; And (3) preparing a coating, namely uniformly coating the high-antibacterial coating on the surface of the metal substrate, and curing the coating to form a film at normal temperature or under a heating condition to obtain the high-antibacterial coating.

Description

High-antibacterial-property coating and preparation method thereof Technical Field The application relates to the field of coating materials, in particular to a high-antibacterial-property coating and a preparation method thereof. Background The development of high-performance coating brings more possibility for functional surface treatment, wherein the antibacterial coating is taken as an important branch of the functional surface treatment, and has wide application prospect in various fields such as food packaging, medical and health, household articles and the like. The core of the stainless steel coating is that on the basis of the original performance of the stainless steel substrate, the safe, stable and long-acting antibacterial effect is realized through the coating, the use characteristics of the application scene are required to be closely matched, and meanwhile, the suitability of the stainless steel coating and the stainless steel substrate is considered, so that the research and development of related high-performance coatings become technical keys. In the related art, in order to improve the antibacterial performance of the stainless steel coating, an antibacterial agent is generally added to the raw material. The organic antibacterial agent has the characteristics of high sterilization speed, wide antibacterial spectrum and the like, and is commonly quaternary ammonium salts, phenols and the like, and the inorganic antibacterial agent has the advantages of good stability, strong durability and the like, such as silver antibacterial agents and the like. With respect to the related art, the inventor believes that the addition of a single antibacterial agent can only act on specific types of bacteria, has a narrow antibacterial spectrum, and is difficult to meet the antibacterial demands in complex environments. Disclosure of Invention In order to improve the antibacterial property of the stainless steel surface coating, the application provides a high antibacterial property coating and a preparation method thereof. In a first aspect, the present application provides a coating with high antimicrobial properties, which adopts the following technical scheme: The high-antibacterial-property coating comprises, by weight, 35-40 parts of epoxy resin, 2-6 parts of inorganic nano-filler, 0.5-1.5 parts of inorganic antibacterial agent, 0.2-0.6 part of organic antibacterial agent, 1-3 parts of silane coupling agent, 8-12 parts of curing agent, 3-5 parts of diluent, 0.5-1.0 part of defoaming agent, 0.1-0.3 part of leveling agent and 50-100 parts of solvent, wherein the organic antibacterial agent is a1, 3, 5-triazine compound. By adopting the technical scheme, the application uses the epoxy resin as a polymer matrix, combines the inorganic nano filler and the silane coupling agent to construct a compact and stable coating structure, and adds the inorganic antibacterial agent and the organic antibacterial agent to realize organic-inorganic synergistic antibacterial, so that the high antibacterial coating has good antibacterial property; the silane coupling agent can form chemical bonds between the inorganic nano filler and the epoxy resin and between the inorganic/organic antibacterial agent and the epoxy resin, so that the dispersion stability of the organic/inorganic antibacterial agent is improved; The 1,3, 5-triazine ring is a nitrogen-containing heterocycle and has good electron withdrawing capability, and the 1,3, 5-triazine compound generally contains electrophilic substituent groups, can generate electrophilic substitution reaction with protein or lipid in bacterial cell membranes, damage the integrity of the cell membranes, and inhibit bacterial folic acid metabolism by inhibiting DHFR enzyme which catalyzes a key step of folic acid synthesis, thereby inhibiting bacterial cell proliferation. Preferably, the inorganic nano-filler is at least one of nano SiO 2 and nano Al 2O3. By adopting the technical scheme, the nano SiO 2 and the nano Al 2O3 have the characteristics of small particle size and large specific surface area, can form an inorganic framework structure which is uniformly dispersed in an epoxy resin system, and are favorable for improving the wear resistance of the high-antibacterial-property coating, the surfaces of the nano SiO 2 and the nano Al 2O3 are rich in hydroxyl groups, can form stable interface combination with the inorganic antibacterial agent under the action of the silane coupling agent, improve the effective exposure area of the inorganic antibacterial agent in the coating, and promote the uniform distribution of antibacterial active ions on the surface of the coating, so that the antibacterial property of the high-antibacterial-property coating is favorable for improving. Preferably, the inorganic nano-filler is nano SiO 2. By adopting the technical scheme, the surface of the nano SiO 2 is rich in-Si-OH, and can form hydrogen bond with hydroxyl and ether oxygen bond in the