New breakthrough in Japanese antibacterial ceramics

In August 2003, Japan Taiping Chemical Industry Co., Ltd. successfully developed a multi-type antibacterial and antibacterial ceramic. This kind of porous ceramic has made a new breakthrough in the existing antibacterial ceramic production technology. It not only further improves the antibacterial property, but also enhances the anti-mold property, and also shows good physical and mechanical properties.
According to reports, the raw materials used for this ceramic use a specific crystal powder and a ceramic material with a higher sintering temperature than the crystal powder. The crystal powder is a solution of an alkali metal such as magnesium, calcium, and barium, and one or more metal insoluble orthophosphate insoluble in zinc or aluminum, or a complex salt of insoluble orthophosphoric acid, to which a molybdenum ion and a silver ion solution are added. It is made by mechanochemical reaction at 40°C, and it can be molded at any time during production. The sintering temperature is controlled above 650°C.
Tests have shown that due to the mechanochemical reaction, the combination of copper and silver ions is firmly maintained inside the surface layer; when the powder is sintered, the ceramic powder becomes a bond material of the ceramic material and fine pores are formed in the periphery to increase the surface area of ​​the ceramic powder. The copper and silver ions required for antibacterial and antifungal activity are released for a long period of time to exert antibacterial and antifungal effects that are harmless to the human body, and overcome the defects of mechanical strength, heat resistance, and water resistance of the existing antibacterial ceramics. Therefore, its use is more extensive, and it can be applied to cooling towers, water purifiers, water storage tanks, building walls, and everyday household items such as shoes, underwear, knife handles, and the like.