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Accelerators for Hard Materials Grinding

A technology of hard materials and accelerators, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of deep material surface, increased post-polishing, and reduced yield, so as to reduce the interface damage layer, Improve production efficiency and improve the effect of mechanical friction

Active Publication Date: 2016-04-27
JIANGSU SINO KRYSTALS OPTROINCS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the abrasive liquid prepared by this method mainly relies on the high hardness of the friction agent and the size of the particle size to control the removal rate of the grinding, it is mainly based on physical and mechanical effects, the removal rate is low, and the surface of the material is prone to deep damage. Layer, which will reduce the yield and increase the difficulty of subsequent polishing

Method used

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  • Accelerators for Hard Materials Grinding
  • Accelerators for Hard Materials Grinding
  • Accelerators for Hard Materials Grinding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of accelerator for hard material grinding: Weigh each raw material according to the weight ratio, add 5 parts of ethanolamine, 5 parts of triethanolamine, 10 parts of polyethylene glycol, 10 parts of propylene glycol, and 15 parts of polyethylene in 15 parts of water in sequence Alcohol, 3 parts of sodium polyacrylate, 30 parts of acrylic acid-acrylate copolymer, 5 parts of nonylphenol polyoxyethylene ether, 2 parts of hydroxyethyl cellulose, after stirring evenly, add nitric acid or sodium hydroxide solution to adjust the pH value is 8.5.

[0016] Prepare four grinds, A, B, C, D:

[0017] Add 0 parts, 10 parts, 20 parts, and 30 parts of accelerators to 85 parts, 75 parts, 65 parts, and 55 parts of water respectively, and add 15 parts of boron carbide with a particle size of 320 mesh (40-50 μm) after stirring evenly. After stirring evenly, add nitric acid or sodium hydroxide solution to adjust the pH to 7.5.

[0018] Grind the prepared sample on Yujing YJ2...

Embodiment 2

[0024] Preparation of accelerator for hard material grinding: Weigh each raw material according to the weight ratio, add 8 parts of ethanolamine, 8 parts of triethanolamine, 1 part of polyethylene glycol, 1 part of propylene glycol, and 2 parts of polyethylene in 2 parts of water in sequence Alcohol, 10 parts of sodium polyacrylate, 50 parts of acrylic acid-acrylate copolymer, 17 parts of nonylphenol polyoxyethylene ether, 1 part of hydroxyethyl cellulose, after stirring evenly, add nitric acid or sodium hydroxide solution to adjust the pH value is 8.5.

[0025] Prepare four grinds, A, B, C, D:

[0026] Add 0 parts, 10 parts, 20 parts, and 30 parts of accelerators to 85 parts, 75 parts, 65 parts, and 55 parts of water respectively, and add 15 parts of boron carbide with a particle size of 320 mesh (40-50 μm) after stirring evenly. After stirring evenly, add nitric acid or sodium hydroxide solution to adjust the pH to 7.5.

[0027] Grind the prepared sample on Yujing YJ2M16B-...

Embodiment 3

[0033] Preparation of accelerator for hard material grinding: Weigh each raw material according to the weight ratio, add 2 parts of ethanolamine, 2 parts of triethanolamine, 10 parts of polyethylene glycol, 10 parts of propylene glycol, and 20 parts of polyethylene in 27 parts of water in sequence Alcohol, 1 part of sodium polyacrylate, 10 parts of acrylic acid-acrylate copolymer, 3 parts of nonylphenol polyoxyethylene ether, 15 parts of hydroxyethyl cellulose, after stirring evenly, add nitric acid or sodium hydroxide solution to adjust the pH value is 8.5.

[0034] Prepare four grinds, A, B, C, D:

[0035] Add 0 parts, 10 parts, 20 parts, and 30 parts of accelerators to 85 parts, 75 parts, 65 parts, and 55 parts of water respectively, and add 15 parts of boron carbide with a particle size of 320 mesh (40-50 μm) after stirring evenly. After stirring evenly, add nitric acid or sodium hydroxide solution to adjust the pH to 7.5.

[0036] Grind the prepared sample on Yujing YJ2...

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Abstract

The invention discloses an accelerator used in grinding a hard material. The accelerator comprises the following components in parts by weight: 4-16 parts of an alcohol amine compound, 4-40 parts of an alcohol compound, 1-10 parts of polyacrylate, 10-50 parts of an acrylate polymer, 3-17 parts of a surfactant, 1-15 parts of a cellulosic polymer and 2-27 parts of water and has a pH value of 7-13. The accelerator has better suspension dispersion effect on a large-particle friction agent so that the prepared grinding fluid is difficult to deposit to the bottom of the machine during the circular processing, the chemical interaction between the grinding fluid and sapphire wafers can be enhanced, the hydration of the surface of the wafer is effectively promoted, the interfacial damage layer caused by the purely mechanical effect of the wafer is reduced and thus the grinding removal rate is greatly improved and the production efficiency is significantly increased.

Description

technical field [0001] The invention relates to the field of hard material grinding, in particular to an accelerator for hard material grinding. Background technique [0002] At present, the grinding of hard materials such as sapphire on the market mainly uses large particle (5~100μm) boron carbide, silicon carbide, cubic zirconia, boron nitride, alumina, quartz sand, brown corundum, corundum or diamond powder as abrasives. After adding a certain dispersant and viscosity regulator, the grinding liquid is used for grinding. Since the abrasive liquid prepared by this method mainly relies on the high hardness of the friction agent and the size of the particle size to control the removal rate of the grinding, it is mainly based on physical and mechanical effects, the removal rate is low, and the surface of the material is prone to deep damage. layer, which will reduce the yield and increase the difficulty for subsequent polishing. Contents of the invention [0003] The techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14
Inventor 沈建新周涛
Owner JIANGSU SINO KRYSTALS OPTROINCS
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