CN112851343B - Antibacterial wear-resistant ceramic and preparation method thereof - Google Patents
Antibacterial wear-resistant ceramic and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of antibacterial wear-resistant ceramics, and particularly relates to antibacterial wear-resistant ceramics and a preparation method thereof. The invention is to prepare nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to a molar ratio of 86-90: 2-4: 1-3: 1-3, weighing raw materials, then placing the raw materials into a ball milling tank for ball milling, drying in vacuum, grinding after drying, pre-calcining, granulating, preforming granulated powder through a tablet machine, pressing under 30-40 MPa to obtain a blank, pre-calcining the obtained blank in a muffle furnace at 600-800 ℃ for 2-4 h under an inert atmosphere, then sintering at 1300-1500 ℃ for 4-8 h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic. The prepared ceramic has excellent antibacterial performance and wear resistance.
Description
Technical Field
The invention belongs to the technical field of antibacterial wear-resistant ceramics. More particularly, relates to antibacterial wear-resistant ceramic and a preparation method thereof.
Background
With the continuous improvement of living standard and the enhancement of environmental protection consciousness of people, people pay more and more attention to the influence of living goods around on self health. Bacteria, fungi, mold and the like as pathogenic bacteria can be infected and bred on the surfaces of a plurality of ceramic products, which affects the health of people and even endangers life. In kitchens, washrooms, toilets and other places, bacteria are generally more prone to breeding than wet places, and particularly, sanitary ware in hospitals and public places is easy to breed and spread due to large personnel mobility. Therefore, the sanitary ceramic is urgently required to have antibacterial self-cleaning performance.
CN112094136A discloses an antibacterial ceramic, which is an antibacterial ink printed on the surface of a ceramic blank manufactured by the prior art by silk-screen printing or ink-jet printing, wherein the ink is composed of the following raw materials in parts by weight: 95-98 parts of ceramic stamp-pad ink and 2-5 parts of antibacterial powder material. The manufacturing method of the antibacterial ceramic comprises the following steps: preparing materials, stirring, spraying, drying and baking: and (3) baking the mixture for 1 to 2 hours in an electric baking furnace at 330 to 700 ℃ and 100 to 1280 ℃ in sequence, and finally discharging the finished product. The antibacterial printing ink used in the invention is prepared by drying and high-temperature baking, has good antibacterial and disinfection effects, is firmly adhered and permeates into a ceramic blank, so the ceramic has good antibacterial and disinfection effects, does not need additional disinfection in the use process, can be used by a user with confidence, can avoid the trouble of frequent disinfection in the past, can save the disinfection cost, can avoid cross infection, and is beneficial to the health of the human body and environmental protection.
Although the above documents have good antibacterial effect, the preparation process is complicated, and the wear resistance of the ceramic is not concerned, so that it is urgently needed to develop a ceramic which has a simple preparation process and good antibacterial effect and wear resistance.
Disclosure of Invention
The invention aims to solve the technical problems of complex preparation process and poor wear resistance of the existing antibacterial ceramic and provides antibacterial wear-resistant ceramic and a preparation method thereof.
The invention aims to provide a preparation method of antibacterial wear-resistant ceramic. It is prepared by a solid-phase reaction method.
The invention also aims to provide the bacteriostatic wear-resistant ceramic.
The above purpose of the invention is realized by the following technical scheme:
a preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to a molar ratio of 86-90: 2-4: 1-3: 1-3, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol;
(2) after ball milling is finished, carrying out vacuum drying on the obtained mixed material, grinding the dried mixed material, and sieving the ground powder with a 300-400-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 600-700 ℃ for 1-3 h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, performing the granulated powder by a tablet press, pressing the preformed powder under 30-40 MPa to form a blank, pre-calcining the blank in the muffle furnace at 600-800 ℃ for 2-4 h under an inert atmosphere, sintering at 1300-1500 ℃ for 4-8 h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Preferably, theThe length-diameter ratio of the nano CuO crystal whisker is 20-30: 1, and the particle size is 40-80 nm; the length-diameter ratio of the nano NiO whisker is 25-35: 1; the particle size is 40-80 nm; the nano Sm is2O3And nano Nd2O3The particle size of the particles is 30-50 nm.
Preferably, the ball milling tank in the step 1) is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling.
Preferably, the ball milling speed in the step 1) is 500-600 r/min, and the ball milling time is 6-14 h.
Preferably, the vacuum drying in the step 2) is drying for 16-20 hours in a vacuum oven at 70-90 ℃.
Preferably, in the step 3), the inert atmosphere is helium or argon.
Preferably, in the step (3), the pre-calcination is carried out at 600-800 ℃ for 2-4 h at a heating rate of 10-12 ℃/min; the temperature rise rate of sintering for 4-8 h at 1300-1500 ℃ is 1-3 ℃/min.
The antibacterial wear-resistant ceramic is prepared based on the preparation method.
The invention has the following beneficial effects:
(1) the antibacterial wear-resistant ceramic provided by the invention is prepared by weighing raw materials according to a stoichiometric ratio, ball milling, precalcining, granulating, press forming, binder removal and sintering, and the preparation method is simple, and the obtained ceramic has excellent antibacterial performance and wear resistance;
(2) by adding the nano CuO whiskers and the nano NiO whiskers, the antibacterial performance of the ceramic is improved by utilizing the synergistic effect of the nano CuO whiskers and the nano NiO whiskers, the wear-resisting performance of the ceramic is influenced, and meanwhile, sodium lignosulfonate is added in the granulation process, so that part of sulfur is doped into copper oxide and nickel oxide in an inert atmosphere, and the antibacterial performance is further improved.
(3) ZrO modified by adding Sm and Nd elements2The ceramic material improves the compactness of the ceramic material and improves the wear resistance by utilizing the synergistic effect between the ceramic material and the ceramic material.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the invention in any way. Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Unless otherwise indicated, reagents and materials used in the following examples are commercially available.
Example 1
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to the molar ratio of 88: 3:3:2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Sm is2O3Particle diameter of 40nm, nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Example 2
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to a molar ratio of 90: 4:2:3: 1, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 600r/min, and the ball milling time is 6 h; the length-diameter ratio of the nano CuO crystal whisker is 30:1, and the particle size is 80 nm; the length-diameter ratio of the nano NiO crystal whisker is 35: 1; the grain diameter is 80 nm; the nano Sm is2O3Particle diameter of 50nm, nano Nd2O3Has a particle diameter of 30 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 90 ℃ for 16h, grinding after drying, and sieving the ground powder with a 400-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 700 ℃ for 1h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder under 40MPa to obtain a blank, pre-calcining the blank in the muffle furnace at the room temperature of 12 ℃/min to 600 ℃ for 2h at the heating rate of 3 ℃/min, sintering the blank at the temperature of 1500 ℃ for 4h at the heating rate of 3 ℃/min, cooling the blank to the room temperature in the furnace to obtain the ceramic, and cooling the ceramic to the room temperature in the furnace to obtain the ceramic.
Example 3
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to the molar ratio of 86: 2:4:1: 3, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 500r/min, and the ball milling time is 14 h; the length-diameter ratio of the nano CuO crystal whisker is 20:1, and the particle size is 40 nm; the length-diameter ratio of the nano NiO whisker is 25: 1; the grain diameter is 40 nm; the nano Sm is2O3Particle diameter of 30nm, nano Nd2O3All the particle diameters of (A) and (B) are 50 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 70 ℃ for 20h, grinding after drying, and sieving the ground powder with a 300-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 600 ℃ for 3h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder under 30MPa to form a blank, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 600 ℃ at the heating rate of 10 ℃/min for 4h, then heating to 1300 ℃ at the heating rate of 1 ℃/min for sintering for 8h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 1
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker and nano Sm2O3Nano Nd2O3According to the molar ratio of 88: 6:2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the nano Sm is2O3Particle diameter of 40nm, nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 2
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2NiO crystal whisker and Sm crystal whisker2O3Nano Nd2O3According to the molar ratio of 88: 6:2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Sm is2O3Particle diameter of 40nm, nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 3
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano Sm2O3Nano Nd2O3According to a molar ratio of 88: 2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the nanometer isSm2O3Particle diameter of 40nm, nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 4
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3According to the molar ratio of 88: 3:3:4, weighing the raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Sm is2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 5
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Nd2O3According to the molar ratio of 88: 3:3:4, weighing the raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 6
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2The molar ratio of the nano CuO crystal whisker to the nano NiO crystal whisker is 88: 3:3, weighing the raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h;the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the particle size is 60 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the heating rate of 11 ℃/min for 3h, then heating to 1450 ℃ at the heating rate of 2 ℃/min for sintering for 6h, cooling to room temperature along with the furnace to obtain ceramic, and cooling to room temperature along with the furnace to obtain the ceramic.
Comparative example 7
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to the molar ratio of 88: 3:3:2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Sm is2O3Particle diameter of 40nm, nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the muffle furnace at the room temperature of 11 ℃/min to 700 ℃ for 3h at the heating rate of 2 ℃/min, sintering the blank at the room temperature of 1450 ℃ for 6h at the heating rate of 2 ℃/min, cooling the blank to the room temperature in the furnace to obtain the ceramic, and cooling the ceramic to the room temperature in the furnace to obtain the ceramic.
Comparative example 8
A preparation method of antibacterial wear-resistant ceramic comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to the molar ratio of 88: 3:3:2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Sm is2O3Particle diameter of 40nm, nano Nd2O3Has a particle diameter of 40 nm.
(2) After the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the atmosphere of helium in the muffle furnace from room temperature to 700 ℃ at the temperature rise rate of 2 ℃/min for 3h, then raising the temperature to 1450 ℃ at the temperature rise rate of 11 ℃/min for sintering for 6h, cooling the blank to room temperature in the furnace to obtain ceramic, and cooling the ceramic to the room temperature in the furnace to obtain the ceramic.
Examples 1 to 3 and comparative examples 1 to 8 were subjected to tribological and antibacterial property tests.
The tribology performance of the samples was tested using a ball-and-disk tribology machine (HT-1000, Kaikaya Huakou Co., Ltd., Lanzhou); and respectively placing the samples into culture dishes of escherichia coli, staphylococcus aureus and candida albicans, and testing the bacteriostasis rate, wherein the specific results are shown in table 1:
TABLE 1
In summary, from the comparison between examples 1 to 3 and comparative examples 1 to 8, it can be seen that the bacteriostatic wear-resistant ceramic prepared by the invention has excellent antibacterial performance and wear resistance.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (1)
1. A preparation method of antibacterial wear-resistant ceramic is characterized by comprising the following steps: the preparation method comprises the following steps:
1) nano ZrO with purity of more than 99 percent2Nano CuO crystal whisker, nano NiO crystal whisker and nano Sm2O3Nano Nd2O3According to the molar ratio of 88: 3:3:2: 2, weighing raw materials, and then placing the raw materials into a ball milling tank for ball milling, wherein a ball milling medium is absolute ethyl alcohol; the ball milling tank is a polyethylene ball milling tank, and 3Y-TZP balls are used for ball milling; the ball milling speed is 550r/min, and the ball milling time is 10 h; the length-diameter ratio of the nano CuO crystal whisker is 25:1, and the particle size is 60 nm; the length-diameter ratio of the nano NiO whisker is 30: 1; the grain diameter is 60 nm; the nano Sm is2O3Particle diameter of 40nm, nano Nd2O3The particle size of (A) is 40 nm;
(2) after the ball milling is finished, drying the obtained mixed material in a vacuum oven at 80 ℃ for 18h, grinding after drying, and sieving the ground powder with a 350-mesh sieve;
3) calcining the sieved powder in a muffle furnace at 650 ℃ for 2h, mixing the obtained powder with a sodium lignosulfonate aqueous solution with the mass fraction of 5% for granulation after calcination, preforming the granulated powder by a tablet press, pressing the preformed powder into a blank under 35MPa, pre-calcining the blank in the muffle furnace at the room temperature of 11 ℃/min to 700 ℃ for 3h at the heating rate of 2 ℃/min, sintering the blank at 1450 ℃ for 6h at the heating rate of 2 ℃/min, and cooling the blank to the room temperature along with the furnace to obtain the ceramic.
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