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Polycrystalline cerium oxide polishing solution for polishing microcrystalline glass as well as preparation method and application thereof

A glass-ceramic, cerium oxide technology, applied in grinding/polishing equipment, machine tools for surface polishing, polishing compositions containing abrasives, etc., can solve the problem of low polycrystalline particle strength, small outer cutting edge, and stable polishing problems such as poor performance, to achieve the effect of stable polishing efficiency, low sharpness and high production efficiency

Inactive Publication Date: 2022-01-21
HENAN UNION ABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the technical problems of the existing polishing liquids such as high processing difficulty, long polishing time, low polishing efficiency and poor polishing stability when polishing special glass ceramics-glass-ceramic, the present invention proposes a polycrystalline glass-ceramic polishing Cerium oxide polishing liquid and its preparation method and application, the polycrystalline particles in the polycrystalline cerium oxide polishing liquid contain 50-100nm cerium oxide particles, the polycrystalline particles have low strength, the outer layer cutting edge is small, the polycrystalline particles are spherical, and the polishing After the surface of the polishing pad is inlaid in the process, it is not easy to cause deep scratches during the polishing process; during the polishing process, the cutting edges of the nano-cerium oxide particles on the outer layer of the polycrystalline particles will gradually fall off and produce new cutting edges, thus ensuring Stability of polishing efficiency and prolonging the life of polishing liquid; and the preparation method of polycrystalline cerium oxide polishing liquid is simple, easy to operate, and easy to modern industrial production

Method used

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  • Polycrystalline cerium oxide polishing solution for polishing microcrystalline glass as well as preparation method and application thereof
  • Polycrystalline cerium oxide polishing solution for polishing microcrystalline glass as well as preparation method and application thereof
  • Polycrystalline cerium oxide polishing solution for polishing microcrystalline glass as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A polycrystalline cerium oxide polishing liquid for polishing glass-ceramics, the polishing liquid is composed of polycrystalline cerium oxide particles, deionized water, pH regulator, dispersant, suspending agent and defoamer, and the polycrystalline cerium oxide particles are composed of cerium oxide Granules, low melting point glass powder, dispersant and deionized water.

[0031] In this embodiment, the mass fractions of the components used to make the polycrystalline cerium oxide particles are shown in the table below, wherein the dispersant is ethylene glycol.

[0032]

[0033] In this embodiment, the mass fractions of the components that make up the polishing liquid are shown in the table below, wherein the pH regulator is diethanolamine in the organic base, the suspension is cellulose-based carboxyethyl cellulose, and the dispersant is Ethylene glycol, and the antifoaming agent is silicone-based polydimethylsiloxane.

[0034]

[0035] It is worth noting t...

Embodiment 2

[0044] A polycrystalline cerium oxide polishing solution for polishing glass-ceramics. The mass fraction of each component of polycrystalline cerium oxide particles in this embodiment is shown in the table below, wherein the dispersant is polyethylene glycol 200.

[0045]

[0046] In this embodiment, the mass fractions of the components that make up the polishing liquid are shown in the table below, wherein the pH regulator is potassium hydroxide in inorganic bases, the suspension is gum arabic of natural gums, and the dispersant is glycerol Alcohol, antifoaming agent is polydimethylsiloxane silicone.

[0047]

[0048] It is worth noting that in this example, the content of cerium oxide in the cerium oxide particles is ≥99%, the average particle size of the cerium oxide particles is 1-2 um, the low melting point glass powder is borosilicate glass powder, and the low melting point The average particle size of glass powder is 1~2um, and the particle size of polycrystalline...

Embodiment 3

[0051] A method for preparing a polycrystalline cerium oxide polishing liquid for polishing glass-ceramics, comprising the following steps:

[0052] S1. According to the required ratio, prepare a suspension with 1-2um cerium oxide particles, 1-2um low-melting glass powder particles, dispersant and deionized water, and grind to 50-100nm by a sand mill, filter, and set aside . Specifically, weigh cerium oxide particles, low-melting point glass powder, and polyethylene glycol 200 according to the ratio shown in the table below, add them to weighed deionized water, and prepare a 20% suspension, pass through a sand mill Sand mill until the average particle size is 100nm, filter through a 1um filter element, and set aside after filtration.

[0053]

[0054] S2. Adjust the process parameters of the centrifugal spray dryer, spray-dry the suspension after sanding in step S1, and prepare spherical particles of 20-40um. Specifically, a centrifugal spray dryer is used for spray granu...

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Abstract

The invention provides a polycrystalline cerium oxide polishing solution for polishing microcrystalline glass as well as a preparation method and application thereof. The technical problems of high processing difficulty, long polishing time, low polishing efficiency and poor polishing stability when an existing polishing solution is used for polishing special glass ceramic-microcrystalline glass can be solved. Polycrystalline particles in the polycrystalline cerium oxide polishing solution comprise 50-100 nm cerium oxide particles, the polycrystalline particles are low in strength, small in outer-layer cutting edge and spherical, and after the polycrystalline particles are embedded in the surface of a polishing pad in the polishing process, deep scratches are not likely to be caused in the polishing process; in the polishing process, the cutting edges of the nano cerium oxide particles on the outer layers of the polycrystalline particles gradually fall off to generate new cutting edges, so that the stability of the polishing efficiency is ensured, and the service life of the polishing solution is prolonged; and the preparation method of the polycrystalline cerium oxide polishing solution is simple, convenient to operate and easy for modern industrial production.

Description

technical field [0001] The invention relates to the technical field of chemical mechanical polishing, in particular to a polycrystalline cerium oxide polishing fluid for polishing glass-ceramic and its preparation method and application. Background technique [0002] In the information age, the popularization of 5G high-speed data transmission technology has led to the explosion of smart terminal products, and the demand for high-end cover glass with strong scratch resistance, drop resistance, and high light transmittance in the terminal market is constantly increasing. [0003] In recent years, a special glass-ceramic-glass-ceramics has appeared, which refers to the basic glass of a specific composition with a crystal nucleating agent (or without a crystal nucleating agent), which is crystallized and heat-treated under a certain temperature system. A large number of tiny crystals are uniformly precipitated inside, forming a dense multi-phase composite of microcrystalline ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09G1/02B24B29/02
CPCC09G1/02B24B29/02
Inventor 王森王国微付春淞王泳汪静
Owner HENAN UNION ABRASIVES