Diamond polishing film production method

A polishing film and diamond technology, applied in the field of abrasives, can solve the problems of huge particles, difficulty in maintaining processing force, and small number of devices, and achieve the effects of increasing specific surface area, prolonging service life, and improving chip force

Inactive Publication Date: 2015-01-14
HENAN UNION ABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, it is found that the choice of raw materials and processing methods will affect the quality of the polishing film. For example, the quality of the diamond micropowder used is poor in classification, or there are huge particles, which will cause scratches on the surface of the device to be polished; the agglomeration of diamond micropowder will also affect the polishing film. The polishing quality and service life of the polishing film; the bonding fastness of the diamond micropowder and the base film is greatly affected by the adhesive and the processing technology, the bonding fastness is not enough, the number of devices that can be processed by the polishing film is small, the service life is short, and it is difficult to maintain the processing force

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Investigate the dispersion effect of different media on diamond micropowder

[0033] Take diamond powder (ordinary single crystal diamond, specification: D9μm, nominal size range 8-12μm, equivalent to M8 / 12 in JB / T7990-1998) and divide it into 4 parts, 2g each, add to 10ml methyl ethyl ketone and toluene respectively , xylene and cyclohexane, which are marked as samples 1, 2, 3, and 4 in turn; put samples 1-4 on an ultrasonic disperser for ultrasonic treatment for 20 minutes, and observe the dispersion state of each sample 5 minutes after taking it out. Such as figure 1 As shown, it is found that even through ultrasonic dispersion treatment, the diamond powder in methyl ethyl ketone will immediately settle down, and then the diamond powder in toluene and xylene will also gradually settle, and only the diamond powder in cyclohexane still maintains a uniform Dispersed state, no sedimentation phenomenon.

[0034] The above experiments show that diamond microp...

Embodiment 2

[0035] Example 2 Effect of washing pH value on polishing film quality

[0036] Synthetic diamond powder usually needs to be chemically treated with acidic substances such as hydrochloric acid, sulfuric acid, and nitric acid during purification. After the treatment, there will be more acidic substances on the surface of the diamond, so the PH value of the diamond soaked in pure water often shows strong acidity. For example, take 4g of ordinary single crystal diamond with a specification of D1μm and put it into 20ml of pure water, and the measured pH value is 4.93, showing strong acidity.

[0037] In order to investigate the effect of different washing pH values ​​on the quality of the polishing film, the diamond micropowder with different washing pH values ​​is used as raw material, and the polishing film samples are prepared according to the same method, and the processing force and durability of the samples are investigated.

[0038] 2.1 Sample preparation

[0039] Take or...

Embodiment 3

[0055] Embodiment 3 The impact of etching treatment on the quality of diamond polishing film

[0056] 3.1 Sample preparation

[0057] Take D9μm ordinary standard single crystal diamond powder and D9μm etched diamond powder as raw materials, and prepare two kinds of polishing film samples according to the following method: weigh unsaturated polyester, polyvinyl chloride and polyacrylic resin, add organic The solvent dissolves the resin, adding a curing agent to form a binder; adding the diamond powder into cyclohexane and ultrasonically dispersing it evenly, then adding it into the binder and stirring evenly to make a coating solution; coating the above coating solution on the base film The surface can be cured by heating.

[0058] The prepared polishing film samples are marked as 4# (D9μm, ordinary standard single crystal diamond) and 5# (D9μm, etched diamond).

[0059] Base film: biaxially stretched PET (polyethylene terephthalate) film, thickness 75 μm, produced by Japan...

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Abstract

The invention discloses a diamond polishing film production method and belongs to the technical fields of grinding materials and grinding tools. The diamond polishing film production method includes that diamond micro-powder is scattered to a binding agent and the surface of a basal film is coated, wherein the diamond micro-powder is washed before scattering till pH (potential of hydrogen) value of washing liquid reaches more than 6.0. The pH value of the surface of diamond is controlled to be near neutral or neutral through washing, binding strength of the diamond micro-powder and the binding agent can be greatly improved, the diamond micro-powder on the polishing film is less prone to falling off during use, and service life of the polishing film can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of abrasive materials, and in particular relates to a preparation method of a diamond polishing film. Background technique [0002] Diamond polishing film, also known as diamond grinding paper and diamond grinding sheet, is widely used in the grinding and polishing of precision devices, and is often used for grinding (rough grinding, medium grinding, fine grinding) of optical fiber ferrule (fiber optic connector), hard disk Polishing of magnetic head and disc surface, grinding and polishing of optical glass, optical crystal, LED, LCD, and grinding and polishing of semiconductor materials (gallium arsenide, indium phosphide, etc.). For example, when using a single crystal diamond polishing film to polish the end face of an optical fiber ferrule, first use a polishing film with a diamond particle size of 9 μm (D9 or M8 / 12) for rough processing, and then use a diamond polishing film with a finer grain size such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24B37/11
CPCB24B37/11B24D18/0072
Inventor 汪静
Owner HENAN UNION ABRASIVES
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