Study On Preparation And Application Of Nano Metal Oxide/Polymer Materials

High-tech is based on material. The development of new materials has always been a research point and forward. Because of excellent and programmable properties, composite materials are widely used in aerospace, daily production and other fields of life. With the development of scientific technology, it is possible to make new materials of special structure and property.Nano metal oxide/polymer composite materials is an effective way to improve mechanical properties. ZnO and TiO₂ are successfully used in metal materials,and also have bright prospects in plastics, rubber, paint and other polymeric materials,they can improve the thermal stability(especially hydrogen-containing polymers), heat-resistant, anti-bacterial, absorbing, etc. T-ZnO_w can be reached homogeneous distribution in three dimensions, the PMMA matrix composite materials were prepared to discuss the method of nanoparticles directly filled composites. ZnO was synthesized via the homogeneous precipitation method , T-ZnO_w was prepared via the vapor-phase oxidation of zinc metal in the air and by introducing zeolite as a reaction catalyst, ZnO-TiO₂ and T-ZnO_w-TiO₂ were made by Sol-Gel method, the as-prepared nanoparticles were scattered in PMMA,and the uniformity was achieved through ultrasound. The product was ZnO not ZnCO₃, it was confirmed by XRD, and the spatial structure of T-ZnO_w was also observed, surface structure and catalytic activities of the films were characterized by SEM,TEM,I-V techniques. The results indicated that the T-ZnO_w-TiO₂/PMMA had a high photo-catalytic activity of degrading methylene blue, meanwhile it could absorb UV light effectively.ZnO nanofibers were prepared by electrospinning teehnique, and then ZnO/Epoxy resin composite materials were made. The nanofibres were characterized by TG-DTA, FT-IR, XRD and SEM, respectively. The results showed that the nanofibres after calcination were smooth with a diameter of 100 nm, the mechanical property of epoxy resin modified by ZnO nanoparticle or nanofiber was improved greatly. Methylene blue was mineralized in aqueous of ZnO nanoparticle and ZnO nanofiber upon radiation with ultraviolet light, ZnO nanofiber appeared better decolorization rate(close to 99% at 60 min) than ZnO nanoparticle. Furthermore, the electrospinning process parameters on the impact of fiber morphology were discussed in this paper.