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Antibacterial ceramic cutting tool and preparation method thereof

A technology of antibacterial ceramics and knives, applied in the field of ceramics, can solve problems such as high cost, easy to be oxidized, precious metal silver, etc., and achieve good antibacterial, good resistance and inhibition effects

Active Publication Date: 2014-06-11
BYD CO LTD
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Problems solved by technology

[0006] In order to solve the technical problem that metallic silver is more expensive and costly; and it is easily oxidized when exposed to the air, Chinese Patent Publication No. CN101269961 discloses another production process of antibacterial ceramic knives, which uses fine ceramic materials as the main raw material and adds 1.5-5wt% antibacterial materials, among which antibacterial materials are multifunctional healthy ceramic materials, the main components are silicon oxide, aluminum oxide and zinc oxide
The antibacterial ceramics and its production method have deficiencies: since the antibacterial materials are mainly nano-silicon oxide, aluminum oxide and zinc oxide, their antibacterial effect needs to be improved, especially for Staphylococcus aureus, Candida albicans, and deformation Streptococcus, lactic acid bacteria and actinomycetes viscosus limit the scope of antibacterial and antibacterial materials

Method used

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  • Antibacterial ceramic cutting tool and preparation method thereof

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preparation example Construction

[0038] In addition, the present invention also provides a kind of preparation method of antibacterial ceramic cutter, comprises the following steps:

[0039] S1, batching, ceramic material and antibacterial active material are mixed according to the above-mentioned ratio, and the mixed material of ceramic material and antibacterial active material is obtained;

[0040] S2. Perform ball milling operation on the mixed material of ceramic material and antibacterial active material prepared in step S1 to obtain the mixed material after ball milling;

[0041] S3, subjecting the ball-milled mixed material prepared in step S2 to molding processing to obtain a molding blank;

[0042] S4, subjecting the molded blank prepared in step S3 to isostatic pressing to obtain an isostatic pressed blank;

[0043] S5. Sintering the isostatic pressing blank obtained in step S4 to obtain a ceramic cutting tool blank;

[0044] S6, post-processing to obtain ceramic cutters.

[0045] In above-menti...

Embodiment 1

[0060] 1. Raw material: 90kg of superfine zirconia powder doped with 3wt% yttrium oxide, 10kg of antibacterial active material.

[0061] 2. Antibacterial active material 10kg is prepared according to the following ratio: potassium feldspar 32wt%, marble 5wt%, silica 7wt%, zeolite 11wt%, silver oxide 10wt%, titanium dioxide 10wt%, copper oxide 10wt%, oxidation 15wt% of aluminum is based on the total mass of materials required for the preparation of antibacterial active materials.

[0062] Preparation:

[0063] 1) Put potassium feldspar, marble, silica, zeolite, silver oxide, titanium dioxide, copper oxide, aluminum oxide, carboxymethyl cellulose and water into a ball mill in turn for ball milling, pass through a 325-mesh sieve to make a slurry.

[0064] 2) The above slurry is grouted into blocks, and sintered at a temperature of 1200 ° C for 1 hour to remove carboxymethyl cellulose and water.

[0065] 3) Crushing, passing through a 200-mesh sieve, and performing secondary ba...

Embodiment 2

[0070] 1. Raw materials: 97kg of silicon nitride whisker toughened ceramic material, 3kg of nano antibacterial active material.

[0071] 2, nano antibacterial active material is prepared antibacterial active material 3kg by following proportioning: Potassium feldspar 34wt%, marble 5wt%, silica 40wt%, zeolite 5wt%, silver oxide 2wt%, titanium dioxide 2wt%, copper oxide 2wt%, Aluminum oxide 10wt%.

[0072] Preparation:

[0073] 1) Put potassium feldspar, marble, silica, zeolite, silver oxide, titanium dioxide, copper oxide, aluminum oxide, carboxymethyl cellulose and water into a ball mill in turn for ball milling, pass through a 325-mesh sieve to make a slurry.

[0074] 2) Grout the above slurry into blocks, sinter at 1300°C for 1.5h, remove carboxymethyl cellulose and water

[0075] 3) Crushing, passing through a 200-mesh sieve, and performing secondary ball milling to obtain antibacterial active materials.

[0076] After determination, the composition and ratio of the nan...

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Abstract

The invention provides an antibacterial ceramic cutting tool which is prepared from a ceramic material and an antibacterial active material. Based on the total weight of the ceramic material and the antibacterial active material, the addition of the antibacterial active material is 3-10wt% and the balance is the ceramic material. The ceramic material comprises one or more than one of zirconium oxide, aluminum oxide, silicon nitride, titanium carbide or titanium nitride. The antibacterial active material comprises silver oxide, copper oxide, titanium oxide, silicon oxide, aluminum oxide, alkali metal oxide, alkaline earth metal oxide and inevitable impurities. The grain size of the antibacterial active material is 10-100nm. Meanwhile, the invention further provides a preparation method of the antibacterial ceramic cutting tool. The antibacterial ceramic cutting tool provided by the invention is good in antibacterial and bacteriostatic effect, and particularly has a good capability of resisting and inhibiting staphylococcus aureus and tritirachium album.

Description

technical field [0001] The invention belongs to the technical field of ceramics, and in particular relates to an antibacterial ceramic cutter and a preparation method. Background technique [0002] With the development of science and technology and the improvement of people's living standards, people's awareness of environmental protection has been continuously strengthened. At the same time, due to the deterioration of the environment and global warming, the growth of bacteria has been promoted, and the incidence of viral infections and morbidity has also gradually increased. In the prior art, the daily-use knives at home are mainly made of metal or alloy. If they are not cleaned in time or thoroughly after use, bacteria will easily breed. [0003] At present, in some public places, such as: hospitals, restaurants, high-end residences, etc., antibacterial sanitary ceramic products have begun to be promoted. [0004] The existing antibacterial ceramics are generally formed...

Claims

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Application Information

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IPC IPC(8): C04B35/63C04B35/622C04B35/48C04B35/81
Inventor 施发满李全省
Owner BYD CO LTD
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