Oily diamond grinding liquid and preparation method thereof

Abstract

The invention discloses an oily diamond grinding liquid and a preparation method thereof, and belongs to the technical field of surface superfine grinding. The grinding liquid comprises the following components by weight percent: 0.001%-10% of diamond micro powder, 0.001%-20% of surface active agent, 0-20% of dispersant, 0-10% of pH value regulator, 0-10% of wetting agent and oil in balancing amount. The oily diamond grinding liquid is mainly applied to surface grinding and polishing of silicon carbide wafers, LED sapphire substrate slices, ceramic, optical fiber, dies, semi-conductor compound wafers and the like. By the use of the oily diamond grinding liquid provided by the invention, the polishing efficiency can be greatly improved; the dispersing performance is good; a uniform and stable state can be kept for a long time; the degree of finish of products polished with the oily diamond grinding liquid is high; the polishing effect is good; no ingredient harmful to human body is contained; the cleaning is easy; and the environmental protection is facilitated.

Description

technical field [0001] The invention relates to a polishing liquid used for grinding and polishing, in particular to an oily diamond grinding liquid and a preparation method thereof, belonging to the technical field of ultra-fine surface grinding and polishing. Background technique [0002] Diamond micropowder is an ultra-fine abrasive with high hardness and good mechanical and physical properties. Its shape is spherical or ellipsoidal. It is used for grinding and polishing without scratching the object to be ground. Therefore, it has been widely used in different processing and polishing fields. Especially in the field of ultra-precision surface polishing. Diamond powder is an ideal polishing material for hard alloys, ceramics, gemstones, optical glass, artificial crystals, integrated circuits, etc. It can be made into ointment, aerosol, film, oily or water-based liquid polishing products, diamond Ointments and aerosols have limited their application scope due to their dis...

AI Technical Summary

Problems solved by technology

Diamond powder is an ideal polishing material for hard alloys, ceramics, gemstones, optical glass, artificial crystals, integrated circuits, etc. It can be made into ointment, aerosol, film, oily or water-based liquid polishing products, diamond Ointments and aerosols are limited in their scope of application due to their disadvantages such as easy stagnation and precipitation, difficulty in dispersing and large waste.

Compared with water-based grinding fluid, oil-based grinding fluid has good lubricating performance, fast grinding speed, stable speed and cooling effect, while water-based grinding fluid is easy to cause large scratches on the workpiece during the grinding process, and the suspension stability is relatively low. Poor, therefore, the application of oil-based abrasives is relatively wide, but the traditional oil-based abrasives are prone to precipitation, low polishing efficiency, corrosive and difficult to clean, and do not meet the requirements of environmental protection.

The current research is mainly aimed at water-based diamond grinding fluid, but there are few reports on oil-based diamond grinding fluid.

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