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CN-119896214-B - Antibacterial agent and preparation method thereof, powder coating, product with antibacterial function and preparation method thereof

CN119896214BCN 119896214 BCN119896214 BCN 119896214BCN-119896214-B

Abstract

The application relates to an antibacterial agent and a preparation method thereof, a powder coating, a product with an antibacterial function and a preparation method thereof. The antibacterial agent comprises an inorganic carrier, and silver ions, copper ions and third metal ions which are loaded on the inorganic carrier, wherein the third metal ions comprise one or more of nickel ions, titanium ions, manganese ions and zinc ions, and the content of the silver ions is greater than or equal to the content of the copper ions. The silver ions in the antibacterial agent play a main antibacterial role, the copper ions are used for reducing the reduction of the silver ions, so that the silver ion state is protected, the number of additional exchangeable cations is increased by the third metal ions, the release speed of the silver ions is delayed, and the copper ions are matched, so that the durability of the antibacterial effect of the silver ions is improved.

Inventors

  • LIN XIAOFA
  • LIN XIAOSHAN
  • Lan Kaijin
  • LIU XIAOLONG
  • ZHAO LIN

Assignees

  • 九牧厨卫股份有限公司

Dates

Publication Date
20260508
Application Date
20241224

Claims (16)

  1. 1. An antibacterial agent, characterized by comprising an inorganic carrier and silver ions, copper ions and third metal ions supported on the inorganic carrier; wherein the third metal ion comprises a nickel ion; In the antibacterial agent, the content of silver ions is 0.6 g/meq-1.12 g/meq, the content of copper ions is 0.3 g/meq-0.7 g/meq, and the content of third metal ions is 0.3 g/meq-0.5 g/meq.
  2. 2. The antibacterial agent according to claim 1, characterized in that, The inorganic carrier comprises one or more of zeolite, vermiculite, montmorillonite, mesoporous silica and talcum powder.
  3. 3. The antimicrobial agent of claim 2, wherein the inorganic carrier comprises a zeolite.
  4. 4. The antibacterial agent according to claim 3, wherein the copper ion content is 0.4g/meq to 0.7g/meq.
  5. 5. A method for preparing an antimicrobial agent, comprising the steps of: ion exchange is carried out on the inorganic carrier, silver ions, copper ions and third metal ions, so as to prepare an antibacterial agent loaded with the silver ions, the copper ions and the third metal ions; In the antibacterial agent, the content of silver ions is 0.6 g/meq-1.12 g/meq, the content of copper ions is 0.3 g/meq-0.7 g/meq, and the content of third metal ions is 0.3 g/meq-0.5 g/meq.
  6. 6. The method of preparing an antibacterial agent according to claim 5, wherein the step of ion-exchanging the inorganic carrier with silver ions, copper ions and third metal ions comprises: And sequentially placing the inorganic carrier in a silver salt solution, a copper salt solution and a salt solution containing the third metal ions, and stirring for reaction to enable the inorganic carrier to sequentially exchange ions with the silver ions, the copper ions and the third metal ions.
  7. 7. The method for producing an antibacterial agent according to claim 6, wherein the concentration of the silver salt solution is 0.02mol/L to 0.06mol/L, and/or, The concentration of the copper salt solution is 0.04mol/L to 0.06mol/L, and/or, The concentration of the salt solution containing the third metal ions is 0.02 mol/L-0.05 mol/L.
  8. 8. The method for producing an antibacterial agent according to claim 7, wherein one or more of the following conditions are satisfied: (1) The silver salt solution comprises a silver nitrate solution; (2) The copper salt solution comprises a copper nitrate solution; (3) The salt solution containing the third metal ion comprises nickel nitrate solution; (4) The reaction time of each stirring is 5-7 h; (5) The pH of each stirring reaction is 4-6; (6) The temperature of each stirring reaction is 55-65 ℃ and the stirring reaction is carried out under the light-shielding condition.
  9. 9. The method for preparing an antibacterial agent according to any one of claims 5 to 8, characterized in that before the step of ion-exchanging the inorganic carrier with silver ions, copper ions and third metal ions, the inorganic carrier is further placed in a sodium salt solution with a concentration of 0.3 to 0.6mol/L and treated for 2 to 3 hours at a pH of 11 to 12.
  10. 10. A powder coating comprising the antibacterial agent according to any one of claims 1 to 4 or comprising the antibacterial agent produced by the production method according to any one of claims 5 to 9.
  11. 11. The powder coating according to claim 10, which comprises, by mass, 35-60 parts of resin, 15-30 parts of an antibacterial agent, 10-20 parts of pigment and filler, 2-5 parts of a curing agent and 0.6-2.5 parts of an auxiliary agent.
  12. 12. The powder coating according to claim 11, wherein the auxiliary agent comprises 0.4-1.5 parts of leveling agent and 0.2-1 part of benzoin, and/or, The average particle size of the powder coating is 1-35 mu m.
  13. 13. A product with an antibacterial function, which is characterized by comprising a substrate and an antibacterial coating arranged on the surface of the substrate, wherein the antibacterial coating is obtained by spraying and curing the powder coating according to any one of claims 10-12.
  14. 14. The antimicrobial product of claim 13, wherein the antimicrobial product comprises a kitchen and toilet hardware product.
  15. 15. A method for preparing a product with an antibacterial function, which is characterized by comprising the following steps: spraying the powder coating according to any one of claims 10-12 on the surface of a substrate, and curing to prepare the product with the antibacterial function.
  16. 16. The method for preparing a product with an antibacterial function according to claim 15, wherein the spraying process parameters comprise 40-70 kV of electrostatic high voltage, 10-20 μA of electrostatic current, 0.3-0.6 MPa of flow rate pressure, 0.3-0.5 MPa of atomization pressure, 150-200 mm of distance between a nozzle and a substrate, and/or, The curing temperature is 150-200 ℃ and the curing time is 15-30 min.

Description

Antibacterial agent and preparation method thereof, powder coating, product with antibacterial function and preparation method thereof Technical Field The application relates to the field of antibiosis, in particular to an antibacterial agent and a preparation method thereof, a powder coating, a product with an antibacterial function and a preparation method thereof. Background The use environment of kitchen and bathroom hardware products such as a faucet, a shower head and the like is moist and complicated, bacteria are easy to adhere to the surface of the products, and various metabolites of mould, acid and toxin are bred, so that the appearance and quality of the products are influenced, the human health is endangered, and therefore, the requirements on the antibacterial performance of the kitchen and bathroom hardware products are higher. At present, an antibacterial coating is mostly constructed on the surface of a product to ensure that the product has good antibacterial capability, for example, a certain amount of antibacterial agent is added into powder coating and sprayed on the surface of the product to improve the antibacterial performance. At present, the antibacterial agent is divided into two major categories, namely inorganic and organic, the safety of the organic antibacterial agent is under study, and the organic antibacterial agent has poor heat resistance, is easy to hydrolyze, has short effective period and is difficult to popularize and use. While inorganic antibacterial agents such as silver ion antibacterial agents are high in safety and good in heat resistance, the prepared coating film is poor in antibacterial durability, and the antibacterial effect is greatly reduced after repeated water washing for several times. Therefore, the existing inorganic antibacterial agent is applied to an antibacterial coating, and has the problem of poor antibacterial durability, and the antibacterial effect is greatly reduced after repeated water washing for several times. Disclosure of Invention Based on this, some embodiments of the present application provide an antimicrobial agent having superior durability and a method of preparing the same. In addition, other embodiments of the application also provide a powder coating comprising the antibacterial agent, a product with an antibacterial function and a preparation method thereof. An antibacterial agent comprising an inorganic carrier and silver ions, copper ions and third metal ions supported on the inorganic carrier; wherein the third metal ion comprises one or more of nickel ion, titanium ion, manganese ion and zinc ion; In the antibacterial agent, the content of silver ions is more than or equal to the content of copper ions. Optionally, the third metal ion comprises a nickel ion, and/or, The inorganic carrier comprises one or more of zeolite, vermiculite, montmorillonite, mesoporous silica and talcum powder, and optionally the inorganic carrier comprises zeolite. Optionally, in the antibacterial agent, the content of silver ions is 0.6 g/meq-1.12 g/meq, and/or, The content of copper ions is 0.3 g/meq-0.7 g/meq, and/or, The content of the third metal ions is 0.3 g/meq-0.5 g/meq. A method for preparing an antimicrobial agent, comprising the steps of: ion exchange is carried out on the inorganic carrier, silver ions, copper ions and third metal ions, so as to prepare an antibacterial agent loaded with the silver ions, the copper ions and the third metal ions; Wherein the third metal ion comprises one or more of nickel ion, titanium ion, manganese ion and zinc ion, and in the antibacterial agent, the content of silver ion is greater than or equal to the content of copper ion. Optionally, the step of ion exchanging the inorganic carrier with silver ions, copper ions and third metal ions comprises: And sequentially placing the inorganic carrier in a silver salt solution, a copper salt solution and a salt solution containing the third metal ions, and stirring for reaction to enable the inorganic carrier to sequentially exchange ions with the silver ions, the copper ions and the third metal ions. Optionally, the concentration of the silver salt solution is 0.02 mol/L-0.06 mol/L. Optionally, the concentration of the copper salt solution is 0.04 mol/L-0.06 mol/L. Optionally, the concentration of the salt solution containing the third metal ion is 0.02 mol/L-0.05 mol/L. Optionally, one or several of the following conditions are satisfied: (1) The silver salt solution comprises a silver nitrate solution; (2) The copper salt solution comprises a copper nitrate solution; (3) The salt solution containing the third metal ions comprises one or more of nickel nitrate solution, titanium nitrate solution, manganese nitrate solution and zinc nitrate solution, and optionally, the salt solution containing the third metal ions comprises nickel nitrate solution; (4) The reaction time of each stirring is 5-7 h; (5) The pH of each stirring reaction is 4-6; (6) The temp