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Hard ceramic grinding synergist and preparation method thereof

A synergist and hard technology, which is applied in polishing compositions containing abrasives, chemical instruments and methods, and other chemical processes, can solve problems such as reducing the efficiency of abrasives, destroying long-chain structures, and deteriorating suspension performance. , to achieve the effect of improving surface grinding efficiency, reducing hardness and weakening chemical bond strength

Inactive Publication Date: 2016-11-23
宁波日晟新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the long-chain structure of the synthetic polymer is destroyed during the use of hard abrasives. During the recycling process of the abrasive, the suspension performance of the abrasive is continuously deteriorated due to the structural damage of the suspension, which reduces the use efficiency of the abrasive and at the same time Causes severe scratches on the surface of the substance being ground

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare a hard ceramic grinding synergist as follows: in 3000g of water, add 2000g of sodium polyaspartate, 3000g of sodium ethylenediamine tetramethylene phosphonate, 1000g of aluminum silicate bentonite, and 50g of polyethylene glycol twelve Alkyl ether surfactant, stir evenly, and finally adjust the pH to 10.5 with alkali for sapphire grinding.

Embodiment 2

[0023] Add 0.0kg, 0.5kg, 1.0kg, 1.5kg, and 2.0kg of the grinding synergist of Example 1 into 7kg of pure water, stir well, and mark as 2a, 2b, 2c, 2d, and 2e. Add 2.5kg of 320-mesh boron carbide into the above liquid, and stir evenly to obtain 2a, 2b, 2c, 2d and 2e grinding liquids containing boron carbide.

[0024] Grind the prepared slurry on a Shengko single-side grinder. Down pressure: 1psi, the rotation speed of the lower plate and the carrier plate is 20RPM, the flow rate of the grinding liquid: 100ml / min, the material of the grinding plate: nodular cast iron 600. The grinding time was 10 minutes, and 12 pieces of 2" sapphire wafers were ground each time. 2" C-plane sapphire wire-cut wafers were used for the grinding test. The grinding speeds of this series of grinding fluids are 2.3, 3.1, 4.0, 5.2, 5.8 μm / min. The surface roughness of the sapphire crystal surface is evenly distributed, without deep scratches, and there is no deposition on the surface of the grinding m...

Embodiment 3

[0027] The grinding liquid prepared in Example 2 can be recycled, and its grinding rate is respectively: 0.3, 0.7, 2.2, 3.2, 3.5 μm / min at the 15th time. It can be seen that the grinding synergist of the present invention can not only accelerate the grinding efficiency, but also prolong the service life of the grinding liquid.

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PUM

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Abstract

The invention provides a hard ceramic grinding synergist used for polishing sapphire. The hard ceramic grinding synergist is characterized by including a solvent which contains polar molecules and can generate a hydration reaction, a hard material surface hydration catalyst, an antirust agent, a suspending agent and a surfactant are included, wherein the pH value of the synergist ranges from 8.0 to 11.0. The hard material surface hydration catalyst, the antirust agent, the suspending agent and the surfactant are sequentially put in the solvent, the mixture is stirred to be uniform, and the synergist is prepared. The synergist is prepared into grounding fluid for use. The surface hydration process of the sapphire is accelerated through the surface hydration catalyst, the strength of chemical bonds on the surface of the sapphire is weakened, and rapid grinding can be achieved without high mechanical friction force.

Description

technical field [0001] The invention relates to a grinding synergist for sapphire polishing and a preparation method thereof, in particular to a hard oxide ceramic grinding synergist and a preparation method thereof. Background technique [0002] The abrasive materials of hard materials currently on the market are mostly formulated with hard abrasives, water media and suspending agents. The basic principle is to disperse hard abrasive materials in water media through effective dispersants, The mechanical friction on the surface of the ground material removes the damaged layer on the surface of the hard material to achieve the purpose of grinding. Because the traditional grinding process relies entirely on mechanical grinding, the surface damage layer is deep, the grinding efficiency is low, and severe scratches are more likely to occur, which increases the burden of subsequent polishing processes and processing costs. In addition, the traditional grinding process uses a syn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14C09G1/02
Inventor 孙韬
Owner 宁波日晟新材料有限公司
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