Grinding auxiliary and grinding liquid for coarse grinding of sapphire and preparation methods of grinding auxiliary and grinding liquid

A grinding aid, sapphire technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as poor suspension of abrasive particles, thermal stress cracks, poor lubricity, etc., to increase cycle life and lubricity , the effect of increasing the grinding rate

Active Publication Date: 2016-04-20
BEIJING GRISH HITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are oil-based and water-based rough grinding fluids for sapphire. In general, water-based grinding fluids have a higher grinding rate than oil-based grinding fluids, but have poor lubricity and are prone to large scratches on the surface of sapphire substrates, which increases the difficulty of grinding in subsequent processes. , at the same time, the water-based abrasive has poor heat dissipation during the grinding p

Method used

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  • Grinding auxiliary and grinding liquid for coarse grinding of sapphire and preparation methods of grinding auxiliary and grinding liquid
  • Grinding auxiliary and grinding liquid for coarse grinding of sapphire and preparation methods of grinding auxiliary and grinding liquid
  • Grinding auxiliary and grinding liquid for coarse grinding of sapphire and preparation methods of grinding auxiliary and grinding liquid

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1-5

[0038] A sapphire coarse grinding and grinding aid, which is prepared from the following components by weight, as shown in Table 1.

[0039] Table 1. Preparation of grinding aids for rough grinding of sapphire

[0040]

[0041] The filler can finally be dissolved in the grinding aid for lubrication and heat dissipation during the grinding process.

Example Embodiment

[0042] Example 6

[0043] This embodiment provides a preparation method of the grinding aid described in Embodiment 1, including the following steps:

[0044] (1) Preparation of component A:

[0045] ①Add ethanol, zinc stearate, and magnesium stearate to the reaction kettle in proportion, and stir for 0.5h at 50℃;

[0046] ②Add the dispersant polymaleic acid to the above reaction kettle, stir at room temperature for 0.5h, degas, discharge and encapsulate;

[0047] (2) Preparation of component B:

[0048] Add xanthan gum and fumed silica into a ball mill in proportions, then add ethanol, Tween 20, triethanolamine and sodium hydroxide in proportions, ball mill and stir for 0.5 hours, mix well, discharge and encapsulate.

[0049] When in use, component A and component B are mixed uniformly at a weight ratio of 4:1 at room temperature.

Example Embodiment

[0050] Example 7

[0051] This embodiment provides a preparation method of the grinding aid described in Embodiment 2, including the following steps:

[0052] (1) Preparation of component A:

[0053] ①Add ethylene glycol, zinc stearate, and magnesium stearate into the reaction kettle in proportion, and stir for 1 hour at 50°C;

[0054] ②Put the polyamino acid into the above reaction kettle, stir at room temperature for 0.5h, degas, discharge and encapsulate;

[0055] (2) Preparation of component B:

[0056] The fumed silica is added to the ball mill in proportion, then ethylene glycol, Tween 40, diethanolamine, and ammonia are added in proportion, and the ball mill is stirred for 0.5 h, mixed uniformly, discharged and packaged.

[0057] When in use, component A and component B are mixed uniformly at a weight ratio of 4:1 at room temperature.

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PUM

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Abstract

The invention discloses a grinding auxiliary and a grinding liquid for coarse grinding of sapphire and preparation methods of the grinding auxiliary and the grinding liquid. The grinding auxiliary comprises a component A and a component B in a mass ratio of the component A to the component B being 3:1-5:1, wherein the component A is prepared from ingredients in parts by weight as follows: 5-10 parts of small molecular alcohol, 10-15 parts of an organic dispersing agent and 1-2 parts of filler; the component B is prepared from ingredients in parts by weight as follows: 10-20 parts of a suspending agent, 5-10 parts of a defoaming agent, 10-30 parts of the small molecular alcohol and 10-15 parts of an antirust agent. An appropriate quantity of the component A and an appropriate quantity of the component B are taken proportionally and are stirred and mixed uniformly at the normal temperature, a mixture is diluted with deionized water to 10-20 times by weight, abrasive particles are further added, and the grinding liquid for the coarse grinding of the sapphire is prepared. The grinding liquid prepared according to the technical scheme is good in dispersing stability and cannot layer after long-term storage; the lubricating performance is good, and large scratches caused when the grinding liquid is applied to the coarse grinding of the sapphire are reduced; the filler is added to the grinding liquid, so that the temperature of the grinding process is reduced, the surface of a substrate material of the sapphire is not prone to cracking, and the fragment rate is reduced.

Description

technical field [0001] The invention relates to a grinding aid and a grinding liquid, in particular to a grinding aid and a grinding liquid for rough grinding of sapphire and a preparation method thereof. Background technique [0002] Sapphire has extremely high hardness, strength and light transmission, and it has great application potential in mobile phone flat window panels. [0003] Generally speaking, the processing technology of sapphire plane includes rough grinding, fine grinding and polishing. Among them, the first process after cutting the sapphire ingot is double-sided rough grinding, which is also a crucial step. The surface roughness of double-sided grinding, Thickness and TTV directly affect the subsequent processing quality. There are oil-based and water-based rough grinding fluids for sapphire. In general, water-based grinding fluids have a higher grinding rate than oil-based grinding fluids, but have poor lubricity and are prone to large scratches on the su...

Claims

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Application Information

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IPC IPC(8): C09K3/14
CPCC09K3/1463
Inventor 张岩齐荣胡晓刚
Owner BEIJING GRISH HITECH
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