Preparation method of nano antimony tin oxide aqueous dispersion liquid

Abstract

The invention relates to the technical field of nanometer materials, particularly to a preparation method of nano antimony tin oxide aqueous dispersion liquid. The preparation method comprises the following steps: (1), mixing nano antimony tin oxide with deionized water to prepare antimony tin oxide power suspension liquid with the solid content of 1%-20%, then adding a silane coupling agent (accounts for 0.5%-5% of the mass of tin antimony oxide power) for stirring uniformly, and regulating the pH to be 8-10 with ammonia water; (2), performing ultrasonic treatment on the obtained antimony tin oxide aqueous slurry for 10-30 min, then performing high-speed shear dispersion for 0.5-2 h, adding a dispersing agent (accounts for 0.5%-2% of the mass of the aqueous slurry), and performing shear dispersion continuously for 0.5-2 h; (3), on the basis of taking zirconium beads as ball-milling beads, performing ball milling on the antimony tin oxide dispersion liquid obtained in the step (2) for 0.5-5 h to obtain slurry, performing centrifugation at the speed of 1000-3000 r / min for 10-40 min to obtain the stable nano antimony tin oxide aqueous dispersion liquid. According to the preparation method of nano antimony tin oxide aqueous dispersion liquid, provided by the invention, the prepared aqueous slurry is uniform in dispersion, and high in stability, can be stored stably for 6 months or above, and further can be widely applied to conductive, anti-radiation and thermal insulation materials.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a method for preparing a nanoscale antimony tin oxide aqueous dispersion. Background technique [0002] In recent years, with the improvement of people's aesthetic requirements, large glass windows and curtain walls have become more and more popular. A typical ordinary glass (such as float glass) should not only have a high transmittance for visible light, but also have a high reflectivity for near-infrared light, but it is difficult for ordinary glass to meet the above requirements at the same time. The application of thermal insulation materials can solve this problem. Building insulation materials are more and more favored by people because of their good heat insulation effect, economy, and convenient use. Therefore, rational and effective use of building insulation materials is the focus of social research. [0003] Antimony tin oxide (ATO) is a wide bandgap n-t...