A kind of cerium-zirconium doped polishing liquid and its preparation method and application

Abstract

The invention discloses a cerium-zirconium-doped polishing liquid and its preparation method and application. The preparation method uses rare earth carbonate and basic zirconium carbonate as precursors, and through pre-high-energy ball milling, the particle size of raw materials is greatly reduced while passing The energy input reduces the grain boundary energy in the raw material, and the spray drying ensures the uniformity of dispersion between the powder particles while removing the water. After that, combined with a specific secondary calcination method, it can prevent the original crystal from growing too much during the calcination process. Make the crystal grains grow more completely during the calcination process, the crystal lattice is more perfect, the edges and corners are more distinct, and it is easier to obtain materials with small grain size and uniform particle size distribution, thus ensuring that the polishing liquid prepared by the above method is used for polishing blue glass It has high cutting capacity and high surface quality at the same time; in addition, the further ball milling and formula preparation of polishing fluid are completed at the same time during the ball milling process, which not only speeds up the ball milling efficiency, shortens the production cycle, but also is more environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of optical glass, and in particular relates to the polishing of blue glass, in particular to a cerium-zirconium doped polishing solution and its preparation method and application. Background technique [0002] Before the blue glass was used, most of the filter substrates installed in the camera were made of quartz glass, and a cut-off filter film was coated on the surface of the quartz glass to allow a short wavelength to pass through and reflect part of the red light. In order to block all the red light, several filters are needed to reflect at different angles. The blue glass coated with a cut-off filter film is the same as the quartz substrate, but the blue glass has an additional function of absorbing red light, so that the light in the lens barrel will not interfere with other light due to diffuse reflection, so that The light wave frequency of the wavelength entering the CCD camera is more single, an...

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Problems solved by technology

[0003] At present, the traditional polishing liquid used in the market is generally based on zirconia, which has the problems of scratches, frog skin, and low service life, and cannot be used universally; while cerium oxide polishing powder can meet the requirements for the low-end market with low requirements, but Manufacturers with high surface roughness requirements are still not good, the main reason is that cerium oxide itself is hard and easy to cause scratches; there are also some cerium-zirconium doped polishing fluids on the market, but the surface quality and removal amount still cannot be taken into account

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