The Thermal Change Of Kaolinite, Shiji Chemically Bonded Antimicrobial Material And Its Antibacterial Properties

This paper briefly introduces the development of antibacterial materials domestic and international, completely overviews antibacterial properties and inorganic antibacterial agents and fabrication .It talks over the structure and activity of Metakaolinite in detailed, expatiates feasibility of antiracial materials from microcosmic and macrocosmic point of view. This paper prepares vary series of antibacterial materials by use of chemically bonded inorganic antibacterial agents method, synthetically analyzes the antibacterial function from antibacterial circle and germs total amount measurement as well as MIC value.Kaolinite treated at 300 C~1200 C will turn to change into Metakaolinite. Metakaolinite treated at 500 C~900 C partially holds the layer structure characteristic of Kaolinite and have chemical activity, so it matches with the properties of antibacterial materials. XRD indicates preferable crystal kaolinite has much acuity diffract apexes, when temperature ascends 1200 C, crystallized Mullite diffract apex put up, so Metakaolinite gradually dissolved chemical activity.The strength value of chemically bonded materials reflects relation between temperature and chemical activity, that is to say .strength value less than 300 C is little, and located going up phase or parabola figure from 300 C to 900 C, commonly reach peak value at 700 C around, it coincidences with XRD and thermal analysis. So it more expatiates issue which structure decides property, that is to say, average strength value at 40MPa above moreover satisfies framework and function to material.The craftwork of chemically bonded ceramics (CBC) is first to prepare basic materials, that is to say Metakaolinite. Using chemically bonded inorganic antibacterial agents method, we prepare varies series antibacterial materials, and their advantages are security and antibacterial wear and so on.Water glass and phosphoric acid bonded antibacterial materials have well antibacterial properties. Lucid antibacterial circle is holding in 120h, and Ag-series antibacterial rate reaches 99% above in 1h, antibacterial rate rational compares vary series antibacterial materials, and antibacterial curve indicates that it firstly raises then reaches even with time. MIC value is all at 4ppm hereinafter; antibacterial properties outclass other antibacterial materials.The layer structure characteristic and chemical activity of Metakaolinite can fuse in antibacterial agents; the research indicates that chemically bonded antibacterial materials take on excellent antibacterial properties and capacious exploder potential.