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A kind of preparation method of diamond polishing liquid

A polishing liquid and diamond technology, applied in the field of polishing, can solve problems such as uneven dispersion and easy aggregation of diamond particles, and achieve the effect of ensuring suspension and dispersion

Active Publication Date: 2021-08-24
德阳展源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, in the diamond polishing liquid, diamond particles are easy to aggregate and unevenly dispersed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of modified diamond powder: Put diamond powder with an average particle size of 3.0 μm into hydrogen peroxide with a concentration of 20% by mass, stir and react for 0.5h, after the reaction is completed, filter, and then put the filter cake diamond powder into The mass percentage concentration is 50% hydrogen peroxide, heat and stir for 2 hours, and the heating temperature is 50°C. After the reaction is completed, filter, put the diamond powder treated twice with hydrogen peroxide into the nitric acid solution with a concentration of 70%, and reflux under stirring React for 1 hour, reflux at a reaction temperature of 70°C, filter, then wash off the residual acid solution on the surface of the diamond powder with pure water, and dry to obtain a modified diamond powder for later use. The stirring speed is 300 rpm;

[0025] (2) Weigh the raw materials in the following mass percentages: 6% modified diamond powder, 0.1% tannic acid, 0.5% hyaluronic acid, 0.5%...

Embodiment 2

[0029] (1) Preparation of modified diamond powder: Put diamond powder with an average particle size of 3.0 μm into hydrogen peroxide with a concentration of 20% by mass, stir and react for 40 minutes, after the reaction is completed, filter, and then put the filter cake diamond powder into mass The percentage concentration is 50% hydrogen peroxide, heat and stir for 1 hour, the heating temperature is 60°C, after the reaction is completed, filter, put the diamond powder treated twice with hydrogen peroxide into the nitric acid solution with a concentration of 70%, and reflux the reaction under stirring 2h, the reflux reaction temperature is 60°C, filter, then wash off the residual acid solution on the surface of the diamond powder with pure water, dry to obtain the modified diamond powder for use, and the stirring speed is 200rpm;

[0030] (2) Weigh the raw materials in the following mass percentages: 7% modified diamond powder, 0.2% tannic acid, 1% hyaluronic acid, 0.8% polyeth...

Embodiment 3

[0034] (1) Preparation of modified diamond powder: Put diamond powder with an average particle size of 3.0 μm into hydrogen peroxide with a concentration of 20% by mass, stir and react for 1 hour, after the reaction is completed, filter, and then put the filter cake diamond powder into mass The percentage concentration is 50% hydrogen peroxide, heat and stir to react for 0.5h, the heating temperature is 55°C, after the reaction is completed, filter, put the diamond powder treated twice with hydrogen peroxide into the nitric acid solution with a concentration of 70%, and reflux under stirring React for 1.5 hours, the reflux reaction temperature is 65°C, filter, then wash off the residual acid solution on the surface of the diamond powder with pure water, dry to obtain the modified diamond powder for use, and the stirring speed is 300 rpm;

[0035] (2) Weigh the raw materials in the following mass percentages: 8% modified diamond powder, 0.2% tannic acid, 2% hyaluronic acid, 1% p...

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Abstract

The invention discloses a method for preparing a diamond polishing liquid, which comprises the following steps: (1) putting the diamond micropowder treated twice with hydrogen peroxide into a nitric acid solution, refluxing the reaction, and then washing away the residual acid solution on the surface of the diamond micropowder with pure water, Drying; (2) Weigh 6-8% of modified diamond powder, 0.1-0.3% of tannic acid, 0.5-2% of hyaluronic acid, 2-3% of polyethylene glycol, and the balance is water; (3) Dissolve tannic acid in water to obtain a tannic acid solution, then add hyaluronic acid to the tannic acid solution to obtain a mixed solution, then add modified diamond micropowder to the mixed solution, and perform ultrasonic treatment for 1-2 hours to obtain a dispersion system; ( 4) Add polyethylene glycol to the system obtained in step (3), cool the system to 10-15°C, stir for 0.5h, then adjust the pH to 7-8 with saturated calcium hydroxide solution, and heat to continue stirring for 2-3h. Allow to cool to room temperature. In the present invention, the diamond micropowder is modified, and oxygen-containing groups are added on its surface, which is beneficial to the dispersion of the diamond micropowder.

Description

technical field [0001] The invention belongs to the technical field of polishing, and in particular relates to a preparation method of a diamond polishing liquid. Background technique [0002] Diamond polishing liquid includes three different types of polishing liquids: polycrystalline, single crystal and nano. Diamond polishing liquid is composed of high-quality diamond micropowder and other additives, with various formulas, corresponding to different polishing processes and workpieces, and has strong applicability. In the prior art, in the diamond polishing liquid, the diamond particles are easy to gather and disperse unevenly. Contents of the invention [0003] In order to solve the above problems, the present invention provides a preparation method of diamond polishing liquid. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] A preparation method for diamond polishing liquid, comprising the follow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09G1/02C09C1/44C09C3/06
CPCC09C1/44C09C3/06C09G1/02
Inventor 向定艾
Owner 德阳展源新材料科技有限公司