Method for preparing three-component coprecipitation molybdate antimicrobial by using microwave heating
A technology of microwave heating and antibacterial agent, which is applied in the directions of botanical equipment and methods, chemical instruments and methods, and applications, and can solve the problems of easy discoloration, reduced antibacterial performance, poor gloss, etc.
Inactive Publication Date: 2009-11-04
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology
However, due to the active chemical properties of silver, it is easy to change color, and its antibacterial performance is reduced after discoloration, and the carrier of silver-based antibacterial ceramics also has the influence of the carrier on the antibacterial performance. A series of problems such as high cost and how to effectively dissolve antibacterial substances
Method used
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Effect test
Embodiment 1
[0035] Add 10ml of copper nitrate solution with a concentration of 0.1mol / L, 10ml of zinc nitrate solution with a concentration of 0.1mol / L and 40ml of silver nitrate solution with a concentration of 0.1mol / L to 50ml of sodium molybdate with a concentration of 0.1mol / L at the same time solution, a mixed solution was obtained. Stir the mixed solution for about 1 hour to make it evenly mixed. Then put it in a microwave oven with a power of 500-900W, heat it for 30-120s to complete the chemical reaction under microwave conditions, then take it out, and then stir the solution for about 1 hour, let it cool down during the stirring and wait for the precipitate to precipitate. Wash, filter, and dry the precipitated precipitate to obtain Ag 2 MoO 4 -ZnMoO 4-CuMoO 4 Three-component antimicrobial powder.
Embodiment 2
[0037] The prepared Ag 2 MoO 4 -ZnMoO 4 -CuMoO 4 The amount of antibacterial agent is added to the sanitary enamel in a proportion of 1-2wt% of the total weight of the dry glaze, and stirred for about 1 hour to make the antibacterial agent in the glaze
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The invention relates to a method for preparing Ag2MoO4-ZnMoO4-CuMoO4 by microwave heating. A test proves that the chemical reaction of the antimicrobial can be promoted to finish under microwave heating condition, thereby greatly shortening the preparation time of the antimicrobial. And when three components of coprecipitation molybdate antimicrobial powder body solution are prepared, a coprecipitation way is adopted, so that the grain diameter of the antimicrobial is evener, and the antimicrobial effect is improved. Through analyzing and comparing the XRD of a baking sample which is not baked at 1260 DEG C, the three components of molybdate antimicrobial has fine stability at high temperature. And the compound of parts of CuMoO4 and ZnMoO4 substitutes the compound of Ag2MoO4, so that the cost of the antimicrobial is lowered. The prepared Ag2MoO4-ZnMoO4-CuMoO4 antimicrobial is added into sanitary porcelain according to the proportion that the dosage of the antimicrobial is 1 to 2wt percent of the gross weight of dried glaze, and is baked at about 1260 DEG C to obtain an antimicrobial ceramic sample. Through an antimicrobial performance test, the bacteriostatic ratios of antimicrobial ceramic to colon bacillus and staphylococcus aureus are both at over 90 percent which accords with the standard of the antimicrobial ceramic in the building material industry.
Description
Technical field: [0001] The invention relates to a preparation technology of an inorganic antibacterial agent and a method for introducing it into sanitary ceramics. Background technique: [0002] With the general improvement of human material living standards and civilization, the awareness of self-protection is increasing day by day. It is increasingly desirable to create a good ecological environment that reduces germs as much as possible. Antibacterial building sanitary ceramics are health and safety products used in buildings, homes and public places. Antibacterial building sanitary ceramics are widely used in toilets, hospital wards, swimming pools and other places where human activities are frequent and bacteria are easy to grow and spread. The requirements for reducing excrement pollution and cross-infection in public places are also becoming stronger and stronger. This is the development of antibacterial sanitary ceramics. offers broad prospects. [0003] At pres...
Claims
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IPC IPC(8): A01N59/00A01N59/16C01G39/00C04B41/85
Inventor 王黔平吴卫华郭治崔海滨
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY