CN115044239B - Antibacterial composite material for cookware, manufacturing method thereof and cookware - Google Patents
Antibacterial composite material for cookware, manufacturing method thereof and cookware Download PDFInfo
- Publication number
- CN115044239B CN115044239B CN202210758907.9A CN202210758907A CN115044239B CN 115044239 B CN115044239 B CN 115044239B CN 202210758907 A CN202210758907 A CN 202210758907A CN 115044239 B CN115044239 B CN 115044239B
- Authority
- CN
- China
- Prior art keywords
- nano
- antibacterial
- oxide
- porous material
- rare earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Plant Pathology (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides an antibacterial composite material for cookware, a manufacturing method thereof and cookware. The antibacterial composite material comprises a porous material and a nano antibacterial material arranged in pores of the porous material, wherein the weight ratio of the nano antibacterial material to the porous material is between 1:1 and 4:1, and the nano antibacterial material comprises nano rare earth element oxide and nano metal for antibacterial in the weight ratio of between 1:9 and 9:1. According to the invention, the nano rare earth oxide and the nano metal for antibacterial are simultaneously included in the antibacterial composite material, and are adsorbed in the porous material, so that the non-contact antibacterial purpose can be realized through terahertz waves, and the technical problems of small adaptation scene and short antibacterial service life of the conventional antibacterial material are solved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an antibacterial composite material for cookware, a manufacturing method thereof and the cookware.
Background
With the improvement of life quality, the research on the antibacterial performance of cookers is increasing. The existing antibacterial materials are mainly classified into inorganic antibacterial materials and organic antibacterial materials, wherein the inorganic antibacterial materials are classified into metal ion antibacterial and metal oxide photocatalytic antibacterial (e.g., titanium dioxide), and the organic antibacterial materials include vanillin or ethyl vanillin compounds, acyl anilines, imidazoles, thiazoles, isothiazolone derivatives, quaternary ammonium salts, bipyridyl phenols, and the like. The most widely used antibacterial material is a metal ion antibacterial material.
However, the conventional inorganic antibacterial materials are all contact antibacterial, and have a problem that the antibacterial effect is weakened until disappearance due to ion elution.
Disclosure of Invention
The present invention is directed to solving at least one of the above-mentioned problems occurring in the prior art or related art.
Therefore, the invention provides a novel antibacterial composite material for cookware, a manufacturing method thereof and cookware, and the antibacterial composite material achieves the purpose of non-contact antibacterial sterilization through terahertz waves, and solves the problems of few adaptation scenes and short antibacterial service life of the conventional antibacterial material.
According to one aspect of the present invention, there is provided an antimicrobial composite material for cookware, the antimicrobial composite material comprising a porous material and a nano-antimicrobial material disposed within pores of the porous material, the weight ratio of nano-antimicrobial material to porous material being between 1:1 and 4:1, the nano-antimicrobial material comprising a nano-rare earth oxide and an antimicrobial nano-metal in a weight ratio of between 1:9 and 9:1. The antibacterial composite material realizes the purpose of non-contact antibacterial sterilization through terahertz waves, thereby prolonging the antibacterial life.
According to an embodiment of the present invention, the nano antibacterial material may have a particle size in a range of 25nm to 500nm, the porous material may be a material having a porosity of 80% or more and a pore size of 50nm to 800nm, and the nano antibacterial material may have a particle size smaller than the pore size of the porous material. By further optimizing the particle size of the nano-antibacterial material and the pore size of the porous material, the nano-antibacterial material can be better adsorbed in the pores of the porous material.
According to the embodiment of the invention, the weight ratio of the nano antibacterial material to the porous material can be 2:1, and the weight ratio of the nano rare earth element oxide to the nano antibacterial metal can be 6:4. The antibacterial performance of the antibacterial composite material can be further improved by further controlling the usage amount of the nano rare earth element oxide, the antibacterial nano metal and the porous material.
According to an embodiment of the present invention, the nano rare earth element oxide may include at least one of nano lanthanum oxide, nano cerium oxide, nano praseodymium oxide, nano neodymium oxide, nano promethium oxide, nano samarium oxide, nano europium oxide, nano gadolinium oxide, nano terbium oxide, nano dysprosium oxide, nano holmium oxide, nano erbium oxide, nano thulium oxide, nano ytterbium oxide, nano lutetium oxide, nano yttrium oxide, and nano scandium oxide; the antibacterial nano metal may include at least one of nano silver, nano copper and nano zinc; the porous material may include at least one of diatomaceous earth and bentonite. The antibacterial performance of the antibacterial composite material can be further improved by controlling the components of the nano rare earth element oxide, the antibacterial nano metal and the porous material.
According to an embodiment of the present invention, the nano rare earth element oxide may include at least one of nano lanthanum oxide, nano cerium oxide, nano neodymium oxide, and nano yttrium oxide; the antibacterial nano-metal may include at least one of nano-silver and nano-copper; the porous material may comprise diatomaceous earth. The antibacterial performance of the antibacterial composite material can be further improved by controlling the components of the nano rare earth element oxide, the antibacterial nano metal and the porous material.
According to another aspect of the present invention, there is provided a method of manufacturing an antibacterial composite material for cookware, the method comprising the steps of: mixing the nano antibacterial material with a binder, a surfactant, a defoaming agent and a solvent to obtain slurry; adding a porous material into the slurry, and stirring for a predetermined time to enable the nano antibacterial material to be adsorbed in the pores of the porous material, thereby obtaining a mixed slurry; and spray drying the mixed slurry to obtain the antibacterial composite material, wherein the weight ratio of the nano antibacterial material to the porous material is 1:1-4:1, and the nano antibacterial material comprises nano rare earth element oxide and nano metal for antibacterial in the weight ratio of 1:9-9:1. The antibacterial composite material formed by the method can improve antibacterial capability.
According to an embodiment of the present invention, the slurry may include 30wt% to 45wt% of a solvent, 20wt% to 30wt% of a binder, 0.5wt% to 3wt% of a surfactant, 0.2wt% to 1wt% of an antifoaming agent, and the balance of a nano antibacterial material in weight percent. Controlling the content of each component of the slurry within the above-described ranges enables better formation of the antimicrobial composite.
According to an embodiment of the present invention, the binder may include at least one of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, polyvinyl alcohol, and polyacrylate alcohol; the surfactant may include at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride and dodecyltrimethylammonium bromide; the defoamer may include at least one of polyether modified silicone oil and silicone oil; the solvent may include water. The selection of binders, surfactants, defoamers and solvents from the above materials better enables the formation of antimicrobial composites by spray drying.
According to the embodiment of the invention, the atomization pressure is 0.3MPa-0.6MPa, and the flow rate of the atomization air flow is 0.5m 3 /h-5m 3 And/h, spray drying is carried out under the conditions that the inlet temperature is 200-600 ℃ and the outlet temperature is 50-200 ℃. Performing spray drying under such conditions can improve production efficiency.
According to another aspect of the present invention, there is provided a cooker including: a body having a food-bearing surface; and an antimicrobial coating disposed on a surface of the body, wherein the antimicrobial coating comprises an antimicrobial composite as described above. The pot with the antibacterial coating comprising the antibacterial composite material has higher antibacterial capability.
The invention has the following beneficial effects:
according to the embodiment of the invention, the nano rare earth oxide and the nano metal for antibacterial are simultaneously included in the antibacterial composite material, and are adsorbed in the porous material, so that the purpose of non-contact antibacterial sterilization can be realized through terahertz waves, and the technical problems of few adaptation scenes and short antibacterial service life of the conventional antibacterial material are solved.
Drawings
The above and/or other features and aspects of the present invention will become apparent from and be readily appreciated by the description of the embodiments taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural view illustrating an antibacterial composite material according to an embodiment of the present invention.
Fig. 2 is a flow chart illustrating the manufacture of an antimicrobial composite according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a spray drying system used in the process of manufacturing an antimicrobial composite according to an embodiment of the present invention.
Detailed Description
An antibacterial composite material for cookware and a method of manufacturing the same according to some embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
Fig. 1 is a schematic structural view illustrating an antibacterial composite material according to an embodiment of the present invention.
Referring to fig. 1, an antimicrobial composite 100 according to an embodiment of the present invention includes a porous material 110 and a nano antimicrobial material disposed within pores of the porous material 110.
The porous material 110 may be a material having a porosity of 80% or more and a pore size of 50nm to 800 nm. For example, the porous material 110 may include at least one of diatomaceous earth and bentonite, and preferably may include diatomaceous earth. Taking diatomite as an example, the diatomite has a special porous structure, the pore diameter is 50nm to 800nm, the porosity is more than 80%, and the diatomite can absorb liquid with the weight of 1.5 to 4 times of the diatomite, is nontoxic and harmless, and can be used as an excellent antibacterial carrier.
In the invention, by adsorbing the nano antibacterial material in the porous material, the technical problem that the nano antibacterial material cannot be fully used in production possibly caused by the nano antibacterial material with the nano-scale particle size can be solved. In addition, by adsorbing the nano antibacterial material in the porous material, the dissolution rate of antibacterial metal ions in the nano antibacterial material can be reduced, namely, the dissolution time of the antibacterial metal ions is prolonged, and the antibacterial life is prolonged.
The nano-antibacterial material may include nano-rare earth element oxide 120 and nano-metal for antibacterial 130.
The particle size of the nano antibacterial material can be in the range of 25nm to 500nm, and the particle size of the nano antibacterial material can be smaller than the pore size of the porous material, so that the nano antibacterial material can be adsorbed in the pores of the porous material.
The nano rare earth element oxide 120 may include at least one of nano lanthanum oxide, nano cerium oxide, nano praseodymium oxide, nano neodymium oxide, nano promethium oxide, nano samarium oxide, nano europium oxide, nano gadolinium oxide, nano terbium oxide, nano dysprosium oxide, nano holmium oxide, nano erbium oxide, nano thulium oxide, nano ytterbium oxide, nano lutetium oxide, nano yttrium oxide, and nano scandium oxide. Preferably, the nano rare earth element oxide may include at least one of nano lanthanum oxide, nano cerium oxide, nano neodymium oxide, and nano yttrium oxide.
The rare earth atoms in the nano rare earth oxide 120 have an unfilled 4f5d electron configuration shielded from the outside, and thus have a rich electron level and a long lifetime excited state. When rare earth ions absorb electromagnetic waves with higher external energy, particularly infrared rays, outer electrons can be excited to transit to a high-energy level position, electron orbit transition can be spontaneously carried out due to the fact that the electron energy level is in a metastable state, terahertz electromagnetic waves with lower frequency than infrared light are released, and the process can be repeatedly carried out. Terahertz waves refer to electromagnetic waves with the frequency in the range of 0.1THz-10THz, the wave band covers the characteristic spectrum of organisms, biomacromolecules and other substances, the terahertz electromagnetic waves can change the membrane potential and polar molecular structure of bacteria, so that proteins and physiologically active substances in the microorganisms are mutated and lose activity or die, and the aim of antibiosis is fulfilled.
The antibacterial nano-metal 130 may include at least one of nano-silver, nano-copper, and nano-zinc, and preferably, may include at least one of nano-silver and nano-copper.
The metal ions in the antibacterial nano-metal 130 are firmly adsorbed on the cell membrane by virtue of the action of charges, and react with peptidoglycan on the cell wall, so that the inherent components of bacteria are destroyed or the production function is impaired. Further penetrates the cell wall, causes rupture of the cell wall, and the outflow of the cytoplasm, and is combined with some groups in bacteria and the like, such as sulfhydryl (-SH), so that the protein is coagulated, the activity of cell synthetase is destroyed, the protease is lost, the cell is lost in division and proliferation capacity to die, and finally the bacteria die, thereby achieving the aim of resisting bacteria.
The weight ratio of the nano rare earth element oxide 120 to the antimicrobial nano metal 130 is between 1:9 and 9:1, preferably may be 6:4. In the invention, the weight ratio of the nano rare earth element oxide to the nano metal for antibacterial is controlled within the range, so that the nano rare earth element oxide and the nano metal for antibacterial can play a role in antibacterial in a coordinated fit manner, thereby improving the antibacterial capability. If the weight ratio of the nano rare earth element oxide 120 to the nano metal 130 for antibacterial is less than 1:9, the non-contact terahertz wave has poor antibacterial effect, so that the antibacterial scene is not fully treated (less silver ions are separated out in a drier environment, the antibacterial performance is poor), and the antibacterial life is short; if the weight ratio of the nano rare earth element oxide 120 to the nano metal for antibacterial 130 is greater than 9:1, the contact silver ion antibacterial effect is poor, resulting in incomplete antibacterial scene response, and poor overall antibacterial effect when the ambient light source or infrared radiation is weak.
In the present invention, the weight ratio of nano-antimicrobial material to porous material is between 1:1 and 4:1, e.g., 1:1 to 3.5:1, 1:1 to 3:1, 1.5:1 to 2.5:1, 1.6:1 to 2:1, 1.7:1 to 1.9:1, or any of the values given above, e.g., 1.5:1 to 2:1. In embodiments of the present invention, preferably, the weight ratio of the nano-antibacterial material to the porous material may be 2:1. Because of the low density and low specific gravity of the porous material, it is possible to adsorb much more liquid or suspension than its own weight. If the weight ratio of the nano antibacterial material to the porous material is less than 1:1, the porous material has insufficient amount of nano antibacterial material absorption, the final antibacterial composite material has poor effect, more antibacterial composite materials are required to be added to achieve the same antibacterial effect, the product performance is influenced, and the cost is wasted; if the weight ratio of the nano antibacterial material to the porous material is greater than 4:1, the porous material cannot fully adsorb the nano antibacterial material, and the cost is wasted.
In the invention, by simultaneously comprising the nano rare earth oxide and the nano metal for antibacterial in the antibacterial composite material and enabling the nano rare earth oxide and the nano metal for antibacterial to be adsorbed in the porous material, the technical problem that the nano antibacterial material cannot be fully used in production possibly caused by the nano antibacterial material having the nano particle size can be solved.
A method of manufacturing an antibacterial composite material for cookware according to the present invention will be described in detail with reference to fig. 2.
Referring to fig. 2, the method of manufacturing an antibacterial composite material for cookware according to the present invention includes: preparing a slurry (step S100); preparing a mixed slurry (step S200); and spray drying (step S300).
In step S100, the nano-antibacterial material is mixed with a binder, a surfactant, an antifoaming agent, and a solvent to obtain a slurry. Specifically, the nano rare earth element oxide and the nano metal for antibacterial are weighed according to the weight ratio of 1:9-9:1, and are placed in a double-motion mixer to be mixed for 60min, and then the solvent, the binder, the surfactant, the defoamer, the weighed nano rare earth element oxide and the nano metal for antibacterial are placed in an ultrasonic mixer to be mixed for 30min, so as to obtain the slurry.
In an embodiment of the present invention, the slurry may include 30wt% to 45wt% of the solvent, 20wt% to 30wt% of the binder, 0.5wt% to 3wt% of the surfactant, 0.2wt% to 1wt% of the antifoaming agent, and the balance of the nano antibacterial material (i.e., nano rare earth element oxide and nano metal for antibacterial). In the present invention, the antibacterial composite material can be formed better by controlling the content of each component of the slurry within the above-mentioned range.
As an example, the binder may include at least one of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, polyvinyl alcohol, and polyacrylate alcohol, and preferably, may include polyvinyl alcohol.
As an example, the surfactant may include at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and dodecyltrimethylammonium bromide.
As an example, the defoamer may include at least one of polyether modified silicone oil and silicone oil.
As an example, the solvent may include water.
In step S200, a porous material is added to the slurry, and stirred for a predetermined time to cause the nano-antibacterial material to be adsorbed within pores of the porous material, thereby obtaining a mixed slurry. Specifically, the porous material may be added to the slurry in an amount of between 1:1 and 4:1 by weight ratio of the nano-antibacterial material to the porous material, and stirred for a predetermined time to cause the nano-antibacterial material to be adsorbed within pores of the porous material. In this step S200, the nano-antibacterial material is adsorbed in the pores of the porous material.
In step S300, the mixed slurry in which the nano antibacterial material is adsorbed in the pores of the porous material is spray-dried to obtain the antibacterial composite material. As an example, spray drying is performed under such conditions: the atomization pressure is 0.3MPa to 0.6MPa (preferably 0.4MPa to 0.5 MPa); the flow rate of the atomized air flow is 0.5m 3 /h-5m 3 /h (preferably 1 m) 3 /h-3m 3 /h); the inlet temperature is 200 ℃ -600 ℃ (preferably 300 ℃ -400 ℃); the temperature of the air outlet is 50 ℃ -200 ℃ (preferably 80 ℃ -160 ℃).
In the spray drying process, if the atomization pressure is too high, the particle size of particles formed by slurry atomization is smaller, so that the obtained antibacterial composite material is smaller. If the atomized air flow is small, the movement of particles is insufficient, the temperature and humidity distribution in different areas are uneven, the degree of uneven distribution is obvious, and large-particle-size particles are easy to form; when the atomization air flow is too large, collision exists between particles and the wall of the drying tower, so that finer antibacterial composite materials are easy to generate, and the finer antibacterial composite materials are easy to escape from the atomization drying tower.
As an example, a flow of performing step S300 using the spray drying system will be described with reference to fig. 3.
The spray drying system 1 may include a drying tower 10 having an inlet through which an atomized air stream enters and an outlet through which dried material flows out, a spray head 20 provided at the inlet of the drying tower 10, an air pumping device 30 pumping air to the inlet of the drying tower 10, an air heater 40 heating air pumped through the air pumping device 30, a slurry pumping device 50 pumping slurry to the spray head 20, a tail gas dust removing device 60 connected to the vicinity of the outlet of the drying tower 10, and a cyclone 70 provided between the outlet of the drying tower 10 and the tail gas dust removing device 60.
Air enters the air heater 40 through the air pumping device 30, the hot air heated by the air heater 40 contacts with the slurry pumped to the spray head 20 through the slurry pumping device 50 at the inlet of the drying tower 10, so that the slurry is atomized and dried in the drying tower 10, and then the granulated material is discharged from the outlet of the drying tower 10. In addition, a portion of the gas stream or finer material atomized in the drying column 10 may enter the cyclone 70 for further separation or exit via the off-gas dust removal device 60.
In an embodiment of the present invention, the inlet temperature during spray drying may refer to the temperature at which hot air enters the inlet of the drying tower 10, and the outlet temperature refers to the temperature at which granulated material exits the outlet of the drying tower 10.
In the invention, the particle size of the nano antibacterial material is obviously smaller than the pore size of the porous material, when the porous material absorbs solution or suspension, the uniformly dispersed nano antibacterial material is absorbed in the pores of the porous material in the form of suspension, and when spray drying, the solvent is quickly volatilized in the form of vapor, and the solid nano antibacterial material is blocked by pore channels and is electrostatically adsorbed and remains in the porous material due to the extremely small particle size.
The pan according to the embodiment of the invention comprises: a body having a food-bearing surface and an antimicrobial coating disposed on the surface of the body, the antimicrobial coating may include an antimicrobial composite as described above.
As an example, the antimicrobial composite material as described above may be sprayed onto the surface of the body using a plasma spray process. Specifically, the surface of the pot body is cleaned, so that the surface is roughened to enhance the binding force between the pot body and the antibacterial coating; plasma spraying was performed under the following conditions: the powder feeding speed is 45g/min, the spraying distance is 110mm, the arc current is 650A, the hydrogen pressure is 0.8MPa, the hydrogen flow is 100L/h, the argon pressure is 0.8MPa, the argon flow is 2000L/h, under the parameters, the high-pressure plasma flame flow formed at the muzzle heats the antibacterial composite material to be molten, and then the antibacterial composite material is deposited on the surface of the pot body, so that an antibacterial coating is formed.
The antibacterial composite material according to the present invention and the method of manufacturing the same will be described in detail below with reference to examples and comparative examples.
Example 1
And (3) preparing slurry: weighing nanometer lanthanum oxide (average particle size of 30-40 nm) and nanometer silver metal powder (average particle size of 40-45 nm) according to a weight ratio of 6:4, and mixing in a double-motion mixer for 60min to obtain nanometer antibacterial material; then mixing water, polyvinyl alcohol, cetyl trimethyl ammonium bromide, organic silicone oil and the nano antibacterial material in sequence according to the weight percentage, and then placing the mixture into an ultrasonic mixer for mixing for 30min to obtain slurry; wherein the slurry comprises, by weight, 30% of water, 30% of polyvinyl alcohol, 0.5% of cetyltrimethylammonium bromide, 1% of silicone oil and the balance of nano antibacterial material.
Adding diatomite material (the porosity of which is more than 80% and the pore diameter of which is in the range of 80-100 nm) into the slurry, and stirring for a certain time to be fully absorbed, so that the nano antibacterial material is adsorbed in the pores of the porous material, and a mixed slurry is obtained, wherein the weight ratio of the nano antibacterial material to the diatomite material is 2:1.
At an atomization pressure of 0.6MPa, the flow rate of the atomization air flow is 3m 3 And/h, performing spray drying on the mixed slurry at the inlet temperature of 300 ℃ and the outlet temperature of 80 ℃ to obtain the antibacterial composite material with the average particle size of 20-40 mu m.
Cleaning the surface of the pot body to roughen the surface so as to enhance the bonding force between the pot body and the antibacterial coating, and performing plasma spraying under the following conditions: the powder feeding speed is 45g/min, the spraying distance is 110mm, the arc current is 650A, the hydrogen pressure is 0.8MPa, the hydrogen flow is 100L/h, the argon pressure is 0.8MPa, the argon flow is 2000L/h, under the parameters, the high-pressure plasma flame flow formed at the muzzle heats the antibacterial composite material to be molten, and then the antibacterial composite material is deposited on the surface of the pot body, so that an antibacterial coating is formed on the surface of the pot body.
Example 2
The pot of example 2 was manufactured by the same method as example 1, except that the weight ratio of nano lanthanum oxide to nano metallic silver powder was 1:9.
Example 3
The pot of example 3 was manufactured by the same method as example 1, except that the weight ratio of nano lanthanum oxide to nano metallic silver powder was 9:1.
Example 4
The pot of example 4 was manufactured by the same method as that of example 1, except that nano yttrium oxide and nano copper were used.
Example 5
The pot of example 5 was manufactured by the same method as example 1, except that bentonite (porosity of 80% or more and average pore diameter in the range of 100nm to 150 nm) was used as the porous material.
Example 6
The pot of example 6 was manufactured by the same method as example 1, except that the weight ratio of the nano antibacterial material to the porous material was controlled to be 1:1.
Example 7
The pot of example 7 was manufactured by the same method as example 1, except that the weight ratio of the nano antibacterial material to the porous material was controlled to 4:1.
Comparative example 1
A pot of comparative example 1 was manufactured by the same method as example 1, except that the nano antibacterial material included only nano lanthanum oxide.
Comparative example 2
A pot of comparative example 1 was manufactured by the same method as example 1, except that the nano antibacterial material included only nano silver.
Performance index test
Performance tests were performed on the cookware obtained above and recorded in table 1 below, and the specific performance test method is as follows:
antibacterial performance test: the antibacterial ratio was recorded with reference to the antibacterial performance test in JIS Z2801:2010.
Antibacterial life test: the mixed seasoning soup (soy sauce, vinegar, cooking wine, monosodium glutamate, salt, sugar and edible oil=4:3:2:1:1:2:2 (weight ratio) is kept, water is added after mixing to dilute the mixed seasoning soup to 5wt% of the total solution), the antibacterial rate is tested once every 24 hours, and the antibacterial life is considered to reach the end when the antibacterial rate is lower than 99%.
TABLE 1
| Numbering device | Antibacterial rate | Antibacterial life/h |
| Example 1 | 99.9999％ | 8760 |
| Example 2 | 99.998％ | 8640 |
| Example 3 | 99.997％ | 8640 |
| Example 4 | 99.9999％ | 8760 |
| Example 5 | 99.9999％ | 8760 |
| Example 6 | 99.999％ | 8664 |
| Example 7 | 99.998％ | 8664 |
| Comparative example 1 | 99.99％ | 8640 |
| Comparative example 2 | 99.99％ | 2880 |
As can be seen from table 1, examples 1 to 7 include both nano rare earth element oxide and nano metal for antibacterial, so that the antibacterial rate is higher than comparative examples 1 and 2 including only one antibacterial material. Further, by adsorbing the nano rare earth element oxide and the nano metal for antibacterial in the pores of the porous material, the release rate of the antibacterial ions can be extended, so that the antibacterial lifetime is significantly longer than that of comparative examples 1 and 2.
In summary, by including the nano rare earth oxide and the nano metal for antibacterial in the antibacterial composite material at the same time and adsorbing the nano rare earth oxide and the nano metal for antibacterial in the porous material, the technical problem that the nano antibacterial material cannot be fully used in production due to the nano antibacterial material particle size can be solved, and by adsorbing the nano antibacterial material in the porous material, the dissolution rate of the antibacterial metal ions in the nano antibacterial material can be reduced, that is, the dissolution time of the antibacterial metal ions can be prolonged, the antibacterial life can be prolonged, and the purpose of non-contact antibacterial sterilization can be realized by terahertz waves, so that the antibacterial capability can be improved.
While certain embodiments have been shown and described, it will be appreciated by those skilled in the art that changes and modifications may be made in these embodiments (e.g., different features described in the various embodiments may be combined) without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (6)
1. A pan, characterized in that the pan comprises:
a body having a food-bearing surface; and
an antibacterial coating layer disposed on the surface of the body,
wherein the antibacterial coating is formed by antibacterial composite material,
wherein the antibacterial composite material comprises a porous material and a nano antibacterial material arranged in pores of the porous material,
the weight ratio of the nano-antibacterial material to the porous material is between 1:1 and 4:1,
the nano antibacterial material comprises nano rare earth element oxide and nano metal for antibacterial in a weight ratio of 1:9 to 9:1,
the porous material comprises at least one of diatomite and bentonite,
the particle diameter of the nano antibacterial material is in the range of 25nm to 500nm, the porous material is a material with a porosity of more than 80% and a pore diameter of 50nm to 800nm, and the particle diameter of the nano antibacterial material is smaller than the pore diameter of the porous material,
the antibacterial composite material is prepared by the following steps: mixing the nano antibacterial material with a binder, a surfactant, a defoaming agent and a solvent to obtain slurry; adding a porous material into the slurry, and stirring for a predetermined time to enable the nano antibacterial material to be adsorbed in the pores of the porous material, thereby obtaining a mixed slurry; and spray-drying the mixed slurry to obtain the antibacterial composite material,
wherein the binder comprises at least one of hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methylcellulose, polyvinyl alcohol and polyacrylate alcohol,
wherein the slurry comprises, by weight, 30-45% of a solvent, 20-30% of a binder, 0.5-3% of a surfactant, 0.2-1% of an antifoaming agent, and the balance of a nano antibacterial material.
2. The cooker as claimed in claim 1, wherein,
the weight ratio of the nano antibacterial material to the porous material is 2:1,
the weight ratio of the nano rare earth element oxide to the nano metal for antibacterial is 6:4.
3. The cooker as claimed in claim 1, wherein,
the nano rare earth element oxide includes at least one of nano lanthanum oxide, nano cerium oxide, nano praseodymium oxide, nano neodymium oxide, nano promethium oxide, nano samarium oxide, nano europium oxide, nano gadolinium oxide, nano terbium oxide, nano dysprosium oxide, nano holmium oxide, nano erbium oxide, nano thulium oxide, nano ytterbium oxide, nano lutetium oxide, nano yttrium oxide, and nano scandium oxide;
the antibacterial nano metal comprises at least one of nano silver, nano copper and nano zinc.
4. The cooker as claimed in claim 1, wherein,
the nano rare earth element oxide comprises at least one of nano lanthanum oxide, nano cerium oxide, nano neodymium oxide and nano yttrium oxide;
the antibacterial nano metal comprises at least one of nano silver and nano copper;
the porous material comprises diatomaceous earth.
5. The cooker as claimed in claim 1, wherein,
the surfactant comprises at least one of cetyltrimethylammonium bromide, cetyltrimethylammonium chloride and dodecyltrimethylammonium bromide;
the defoamer comprises at least one of polyether modified silicone oil and organic silicone oil;
the solvent comprises water.
6. The pan of claim 1, wherein the atomizing airflow rate is 0.5m at an atomizing pressure of 0.3MPa to 0.6MPa 3 /h-5m 3 And/h, performing spray drying under the conditions that the inlet temperature is 200-600 ℃ and the outlet temperature is 50-200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210758907.9A CN115044239B (en) | 2022-06-29 | 2022-06-29 | Antibacterial composite material for cookware, manufacturing method thereof and cookware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210758907.9A CN115044239B (en) | 2022-06-29 | 2022-06-29 | Antibacterial composite material for cookware, manufacturing method thereof and cookware |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115044239A CN115044239A (en) | 2022-09-13 |
| CN115044239B true CN115044239B (en) | 2023-08-08 |
Family
ID=83165901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210758907.9A Active CN115044239B (en) | 2022-06-29 | 2022-06-29 | Antibacterial composite material for cookware, manufacturing method thereof and cookware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115044239B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739356A (en) * | 2005-09-13 | 2006-03-01 | 上海大学 | Inorganic antiseptic of RE activated silver carrying matter and its prepn |
| EP1825752A2 (en) * | 2006-02-22 | 2007-08-29 | Stiftung nano innovations -for a better living | Coating compound made of an agent which generates SiO2 with at least one antibacterial agent |
| CN101176468A (en) * | 2007-11-28 | 2008-05-14 | 暨南大学 | Inorganic complex antimicrobials containing zincium-rare earth as well as preparation method and application thereof |
| CN101461374A (en) * | 2009-01-14 | 2009-06-24 | 合肥创元环境工程有限责任公司 | High temperature resistant inorganic antimicrobial material and preparation method thereof |
| CN102138569A (en) * | 2010-01-28 | 2011-08-03 | 广东炜林纳功能材料有限公司 | Rare-earth composite antibacterial agent and application thereof |
| CN103538316A (en) * | 2013-09-27 | 2014-01-29 | 安徽华印机电股份有限公司 | Preparation method of metal-based nano antibacterial coating aluminum plate |
| CN108065788A (en) * | 2016-11-11 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | A kind of antibacterial non-stick material and preparation method thereof and antibacterial non-stick cookware |
| CN108623224A (en) * | 2018-03-30 | 2018-10-09 | 杭州三滴水科技有限公司 | A kind of reduction anti-biotic material and preparation method thereof |
| CN109486267A (en) * | 2018-12-29 | 2019-03-19 | 中国有色桂林矿产地质研究院有限公司 | A kind of composite antibacterial coating and preparation method thereof containing silica |
| CN109679384A (en) * | 2018-12-29 | 2019-04-26 | 中国有色桂林矿产地质研究院有限公司 | A kind of ceramic base antimicrobial coating material and preparation method thereof |
| CN109722086A (en) * | 2018-12-29 | 2019-05-07 | 中国有色桂林矿产地质研究院有限公司 | A kind of silver-based antimicrobial material and preparation method thereof containing porous composite calcium carbonate |
| CN109722087A (en) * | 2018-12-29 | 2019-05-07 | 中国有色桂林矿产地质研究院有限公司 | A kind of copper-based composite antibacterial coating material of argentiferous and preparation method thereof |
| EP3949736A1 (en) * | 2020-08-05 | 2022-02-09 | AGXX Intellectual Property Holding GmbH | Particulate antimicrobial hybrid system |
| CN114158949A (en) * | 2021-12-17 | 2022-03-11 | 武汉苏泊尔炊具有限公司 | Composite material, preparation method thereof and non-stick cookware |
| CN114158571A (en) * | 2021-12-17 | 2022-03-11 | 武汉苏泊尔炊具有限公司 | Antibacterial material and preparation method and application thereof |
| CN114958059A (en) * | 2022-06-29 | 2022-08-30 | 武汉苏泊尔炊具有限公司 | Antibacterial non-stick paint for cookware, manufacturing method thereof and cookware |
| CN114947546A (en) * | 2022-06-29 | 2022-08-30 | 武汉苏泊尔炊具有限公司 | Cooking pot |
-
2022
- 2022-06-29 CN CN202210758907.9A patent/CN115044239B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739356A (en) * | 2005-09-13 | 2006-03-01 | 上海大学 | Inorganic antiseptic of RE activated silver carrying matter and its prepn |
| EP1825752A2 (en) * | 2006-02-22 | 2007-08-29 | Stiftung nano innovations -for a better living | Coating compound made of an agent which generates SiO2 with at least one antibacterial agent |
| CN101176468A (en) * | 2007-11-28 | 2008-05-14 | 暨南大学 | Inorganic complex antimicrobials containing zincium-rare earth as well as preparation method and application thereof |
| CN101461374A (en) * | 2009-01-14 | 2009-06-24 | 合肥创元环境工程有限责任公司 | High temperature resistant inorganic antimicrobial material and preparation method thereof |
| CN102138569A (en) * | 2010-01-28 | 2011-08-03 | 广东炜林纳功能材料有限公司 | Rare-earth composite antibacterial agent and application thereof |
| CN103538316A (en) * | 2013-09-27 | 2014-01-29 | 安徽华印机电股份有限公司 | Preparation method of metal-based nano antibacterial coating aluminum plate |
| CN108065788A (en) * | 2016-11-11 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | A kind of antibacterial non-stick material and preparation method thereof and antibacterial non-stick cookware |
| CN108623224A (en) * | 2018-03-30 | 2018-10-09 | 杭州三滴水科技有限公司 | A kind of reduction anti-biotic material and preparation method thereof |
| CN109486267A (en) * | 2018-12-29 | 2019-03-19 | 中国有色桂林矿产地质研究院有限公司 | A kind of composite antibacterial coating and preparation method thereof containing silica |
| CN109679384A (en) * | 2018-12-29 | 2019-04-26 | 中国有色桂林矿产地质研究院有限公司 | A kind of ceramic base antimicrobial coating material and preparation method thereof |
| CN109722086A (en) * | 2018-12-29 | 2019-05-07 | 中国有色桂林矿产地质研究院有限公司 | A kind of silver-based antimicrobial material and preparation method thereof containing porous composite calcium carbonate |
| CN109722087A (en) * | 2018-12-29 | 2019-05-07 | 中国有色桂林矿产地质研究院有限公司 | A kind of copper-based composite antibacterial coating material of argentiferous and preparation method thereof |
| EP3949736A1 (en) * | 2020-08-05 | 2022-02-09 | AGXX Intellectual Property Holding GmbH | Particulate antimicrobial hybrid system |
| CN114158949A (en) * | 2021-12-17 | 2022-03-11 | 武汉苏泊尔炊具有限公司 | Composite material, preparation method thereof and non-stick cookware |
| CN114158571A (en) * | 2021-12-17 | 2022-03-11 | 武汉苏泊尔炊具有限公司 | Antibacterial material and preparation method and application thereof |
| CN114958059A (en) * | 2022-06-29 | 2022-08-30 | 武汉苏泊尔炊具有限公司 | Antibacterial non-stick paint for cookware, manufacturing method thereof and cookware |
| CN114947546A (en) * | 2022-06-29 | 2022-08-30 | 武汉苏泊尔炊具有限公司 | Cooking pot |
Non-Patent Citations (1)
| Title |
|---|
| The effect of antibacterial ingredients and coating microstructure on the antibacterial properties of plasma sprayed hydroxyapatite coatings;Song, L等;SURFACE & COATINGS TECHNOLOGY;第206卷(第11-12期);2986-2990 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115044239A (en) | 2022-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105498649B (en) | Graphene nano particle composite aerogel microballoon and preparation method thereof | |
| CN114958059A (en) | Antibacterial non-stick paint for cookware, manufacturing method thereof and cookware | |
| CN106140187B (en) | A kind of preparation method of Hydrodemetalation catalyst | |
| CN105948754A (en) | Method for preparing fine-grain silicon carbide ceramic through reaction sintering | |
| CN108419426B (en) | Coated with silica magnetic graphene tiny balloon and its magnanimity preparation method | |
| CN107510991A (en) | A kind of purification of air environment-friendly type filtrate and preparation method thereof | |
| CN106738115B (en) | A kind of anticorrosive mildewproof environment-friendly plywood and preparation method thereof | |
| CN112127209B (en) | Method for in-situ reduction loading of nano silver particles on surface of cellulose paper | |
| KR20170070860A (en) | Sinter bonded porous metallic coatings | |
| CN109650935A (en) | A kind of preparation method of the adjustable alumina porous ceramic film of hole shape | |
| CN106588092B (en) | Photocatalytic zinc titanate porous ceramic and preparation method and application thereof | |
| CN115044239B (en) | Antibacterial composite material for cookware, manufacturing method thereof and cookware | |
| CN115011176B (en) | Antibacterial composite material, preparation method thereof and cooker comprising antibacterial composite material | |
| KR20180133043A (en) | Silver particle and method of manufacture thereof | |
| CN112806613A (en) | Preparation method of porous ceramic with nano-silver, porous ceramic, electronic cigarette atomization core and electronic cigarette | |
| CN110014164B (en) | Method for preparing nickel porous material based on nickel oxalate and sodium chloride blending reduction method | |
| CN107413328A (en) | A kind of area load type material for air purification and preparation method thereof | |
| CN108031436A (en) | A kind of alumina composite absorbent charcoal material and its preparation method and application | |
| CN111040477B (en) | Dry powder coating with lasting antibacterial and mildew-proof effects and preparation method thereof | |
| CN105056948A (en) | Ozone elimination catalyst with porous substrate as carrier and preparation method thereof | |
| CN107551673A (en) | Antibacterial filter core used for automobile air conditioning and its preparation technology | |
| CN114947546A (en) | Cooking pot | |
| WO2024001298A1 (en) | Hydroxyapatite microsphere having adjustable morphology and size, and preparation method therefor | |
| CN114643059B (en) | Fenton catalyst for water treatment and preparation method thereof | |
| CN110975610A (en) | Ozone room temperature decomposition honeycomb module and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |