With chemical modification method, the epoxy resin E44 was modified into water-borne epoxy resin by diethanolamine, considering the compatibility of curing agent and resin, diethylenetriamine was modified into epoxy amine curing agent as well, through single factor method to discuss the effects of reactant ratio, reaction temperature on the results of the product, the structure of the product was analyzed by Infrared spectrum. The experimental results showed that, when molar ratio of epoxy resin and diethanolamine was 4:3, reaction temperature of 70-80°C, the preparation of waterborne epoxy resin emulsion has small particle size and good stability. At the same time, when molar ratio of epoxy resin and diethylenetriamine was 1:1, reaction temperature of 80°C, the performance of waterborne epoxy curing agent is well.
With the two solvothermal and hydrothermal method, synthetize the bismuth phosphate catalyst with controllable morphology. And study the photocatalytic activity which use methylene blue and methylene orange as probe. By using X ray powder diffraction(XRD) and the scanning electron microscope(SEM) the products were characterized. Study found that glycerol content can affect the morphology and structure of bismuth phosphate. In the photocatalytic reaction, MB concentration will affect the rate of reaction, and the bismuth phosphate addition also significantly affect the MO reaction rate.
With the solvent of ethylene glycol, it is synthetized the bismuth tungstate(BWO) catalyst with controllable morphology. By using X ray powder diffraction(XRD) and the scanning electron microscope(SEM and TEM), the products are characterized. It is found that glycerol content can affect the morphology and structure of bismuth tungstate. The result is as follows: BWO is amorphous powder, and in front of the high temperature, it is a roasting scheelite layered structure, for nano single crystal phase. After high temperature roasting, it is changed into amorphous powder, and reunion. The oxidation mechanism of BWO is that the hole conduction band position of BWO is low, the surface hydroxyl, less after inspired by ultraviolet light can effectively reduce the concentration of organic matter.
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