| Climate warming influences people variously, while energy conservation is a very good way. Indoor temperature rising is mainly because the sunlight transfers the heat into the building through the building glass. People beings use air conditioner commonly, which wastes a lot of energy. Currently, a part of the glass uses the reflected light glass, which causes light pollution to people life. Coating transparent glass insulation coating on the surface of glass can reach energy conservation and emissions reduction. The F/Mn co-doped tin dioxide which has an excellent spectral selectivity,and a wide energy gap semiconductor material, can reach heat insulation effect through cutting off the FTIR without affecting the Glass day lighting. Therefore,building energy consumption reduces. This paper mainly focuses on the following aspects to carry out research work:( 1) The F/Mn co-doped tin dioxide Nanoparticles are prepared trough hydrothermal synthesis, which study the impact from hydrothermal reaction temperature, hydrothermal time, calcination temperature, calcination time, dopant species powders by doping ratio, pH value, alkalinity sources, surfactants to morphology of the nano-powders, crystallinity, and particle size. And by means of X-ray diffraction(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM), fourier transform infrared spectroscopy(FTIR), differential thermal/thermogravimetric analyzer(TG-DTA), atomic force microscopy( AFM) and other equipment for the preparation of nano powders out of phase, morphology,particle size and structure were characterized. Factors combined to give the F/Mn co-doped tin dioxide nanoparticles optimum preparation: The hydrothermal reaction temperature was 200?, and pH value was 10, and hydrothermal time was 12 h, and NaOH alkaline source is best, and surfactants was CTAB, and powders optimum doping ratio F: Mn: Sn = 0.07:0.05: 0.88, the powder diameter of about 12 nm.(2) The F/Mn co-doped tin dioxide nanoparticles surface is modified. As the nano-powders easier reunion, it is not easy to disperse in the polyurethane. In order to make F/Mn co-doped tin dioxide nanometer powder with an aqueous polyurethane better compatibility, which is prepared out of the surface modification of nano powder.When the 5% of KH570 modified emulsion substantially no powder deposition,which is the best result. When the 7% of KH570 modified emulsion stability deteriorates, which may be the result of excessive consumption after KH570. The surface of the nano-powders increases significantly due to physical adsorption, so not too much amount of KH570 optimum amount of 5%.(3)After different levels of FxMny Sn(1-x-y)O2 powder modifies waterborne polyurethane, the content of 7% powder appears agglomeration, while no substantially when agglomerated 5%. With the content of FxMnySn(1-x-y)O2nano-powders increasing, adhesion becomes worse, the hardness increases, and adhesion becomes smaller with content of nano-powder increasing. With the content of insulation coating film FxMny Sn(1-x-y)O2 nano-powders to increasing, water absorption coating increases; and coating insulation effect is mainly through blocking infrared spectroscopy. When IR blocking rate becomes greater, separated heat better.Doping ratio of fluorine and manganese on insulation affects relatively large, and the best ratio of fluorine doping manganese is F0.07Mn0.05Sn0.88O2, with powder is used in an amount of 7%, the visible light transmittance of about 80% infrared blocking rate of 70%,to reach the best insulating effect of the coating; taken together, the number of layers of coating layer 1 is the best, which owns good insulation effect, without affecting visible light transmittance at the same time. |
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