Preparation method of modified magnesium oxide composite polishing powder

Abstract

This application relates to the technical field of polishing powder, and specifically discloses a preparation method of modified magnesium oxide composite polishing powder. The preparation method is as follows: step 1, mixing magnesium chloride, lanthanum chloride, cerium chloride, and praseodymium chloride into a solution, and then Mix with a fluorine-containing strong alkali solution to obtain a precursor solution; step 2, add pyridine, polyethylene glycol and p-toluenesulfonyl chloride to the above precursor solution, and then keep it warm at a temperature of 50°C-80°C After 2d-3d, the precursor precipitate is obtained after filtration; step 3, the precursor precipitate is placed in a high-temperature furnace, burned at a temperature of 900-1100°C, and then dispersed and classified to obtain modified oxidation Magnesium composite polishing powder. In this application, potassium p-benzenesulfonate and polyethylene glycol are used to generate ester groups with leaving and dispersing functions to improve the uniform dispersion of components in the precursor solution, thereby improving the cutting strength, yield and service life of the polishing powder as a whole .

Description

technical field [0001] The present application relates to the field of polishing powder, more particularly, it relates to a preparation method of modified magnesium oxide composite polishing powder. Background technique [0002] Because of its unique physical and chemical properties, rare earth polishing powder is widely used in lenses, flat glass, glass bulbs, glasses, watch cases and other fields, and also in functional ceramics, catalysts, luminescence, gas sensors, fuel cells and ultraviolet absorption has also been widely used. Due to the limited rare earth resources, in order to reduce the proportion of polishing powder in the rare earth resources, the resource-rich magnesium oxide is generally used as the main component. [0003] In the preparation process of the current magnesium oxide composite polishing powder, the particles in the precursor slurry are not uniformly dispersed, and agglomerated particles are easily generated, and the molecular surface inside the pa...

AI Technical Summary

Problems solved by technology

[0003] During the preparation process of the current magnesium oxide composite polishing powder, the particles in the precursor slurry are not uniformly dispersed, and agglomerated particles are easily produced, and the molecular surface inside the particles is wrapped, resulting in insufficient reaction of the precipitate and affecting the cutting force of the product.