Granulation type pouncing paper, preparation method and application thereof

A granulation and particle technology, applied in abrasives, manufacturing tools, metal processing equipment, etc., can solve the problems of difficult to meet requirements, reduced grinding life, unable to provide high cutting force, etc., to achieve fine polishing surface and high grinding rate. Effect

Active Publication Date: 2008-07-16
BEIJING GRISH HITECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of abrasive paper has a disadvantage: the abrasive in the coating is mixed with the resin adhesive, and only the abrasive on the surface can play a grinding role. When the abrasive on the surface is blunted, the cutting force of the product will be greatly reduced, resulting in a decrease in the grinding life. It also causes waste of abrasives. Even if the abrasive content is greatly increased, it cannot achieve good results. Such products often cannot provide long-lasting and stable high cutting force
[0004] With the continuous development of electronic information technology, in the precision processing of semiconductor wafers (gallium arsenide, indium phosphide, etc.), precision optical devices (fiber optic connectors, optical glass, lenses, optical crystals, etc.), computer hard disks, magnetic heads, etc. , higher requirements are put forward for precision polishing abrasives. It is necessary for abrasive polishing products to have high and stable cutting force, long service life and high-gloss polishing surface. The above-mentioned granulated abrasive products are difficult to meet the requirements

Method used

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  • Granulation type pouncing paper, preparation method and application thereof

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preparation example Construction

[0027] The preparation of the granulated grinding paper mentioned in the present invention comprises the following steps:

[0028] (1) Preparation of granulation slurry: Disperse the original abrasive in one or several metal oxide sols, add an appropriate amount of inorganic binder or organic binder as a mixed adhesive, add dispersant and other additives, Evenly dispersed;

[0029] (2) Spray drying: the prepared slurry is granulated by high-speed rotary spray drying equipment to obtain spherical particle agglomerates with a diameter of 5-50 μm.

[0030] (3) Preparation of abrasive paper: mix the granulated powder with resin glue and solvent to make a coating, then evenly coat the coating on the surface of the substrate, dry and solidify to obtain granulated abrasive paper.

[0031] The specific explanation of the content involved in the preparation process is as follows:

[0032] The abrasive materials are diamond, silicon carbide, alumina, zirconia, modified cerium aluminum...

Embodiment 1

[0042]Take 1Kg of 0.5 μm alumina micropowder, add 5Kg of silica sol (self-made or commercially available) with a concentration of 35%, 150g of dispersant, 100g of PVA aqueous solution and a little defoamer, and disperse the above mixed solution for 24h by using a ball mill; The granulation test was carried out on the dispersed slurry on the rotary spray dryer, the inlet temperature was 220°C, the outlet temperature was 110°C, the atomizer speed was 33000r.p.m, and spherical particles with an average particle size of 20μm were obtained; Granular powder 1.5Kg, add the mixed solution of polyester glue, toluene, methyl ethyl ketone and ethyl acetate, disperse the above mixed solution for 2 hours through a high-speed mixer, apply the coating on the polyester film with a roller coater, and dry it That is, the granulated alumina abrasive paper of the present invention is obtained.

Embodiment 2

[0044] Get 1.5Kg of 1 μm diamond powder, add 8.5Kg of 35% silica sol (self-made or commercially available), 150g of PVA aqueous solution and a little defoamer, and disperse the above mixed solution for 24 hours by using a ball mill; The granulation test is carried out on the dispersed slurry, the inlet temperature is 230°C, the outlet temperature is 110°C, the atomizer speed is 32000r.p.m, and spherical particles with an average particle size of 22μm are obtained; take 1.5Kg of granulated powder , add the mixed solution of polyester glue, toluene, methyl ethyl ketone and ethyl acetate, disperse the above mixed solution for 2h by a high-speed mixer, utilize a roller coater to coat the coating on the polyester film, and obtain the present invention after drying The granulated alumina grinding paper.

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Abstract

The invention provides a pelleting emery paper which can sharpen self and has durable grinding property and a preparation method and applications thereof. The invention comprises compound grinding grains which are coated to the surface of a substrate through adhesive and show aggregate ball shape. The grinding powders in the compound grinding grains are dispersed in one or more metal oxide sol which is mixed with organic adhesives or inorganic adhesives. The grain diameter of the grinding powder is not more than 10 micron meters and the diameter of the compound grinding grain is 5-50 micron meters. The emery paper is applicable in the grinding and polishing of most work pieces including metal, metal alloy, ceramic, optical element, fiber connecter, hard disc and semiconductor, etc.

Description

technical field [0001] The invention relates to the technical field of high-precision grinding and polishing, in particular to a granulated abrasive paper and its preparation method and application. Background technique [0002] Traditional coated abrasive products are obtained by directly mixing abrasives and adhesives, coating them on the surface of the substrate, and curing them. This kind of abrasive paper has a disadvantage: the abrasive in the coating is mixed with the resin adhesive, and only the abrasive on the surface can play a grinding role. When the abrasive on the surface is blunted, the cutting force of the product will be greatly reduced, resulting in a decrease in the grinding life. It also causes a waste of abrasives, even if the abrasive content is greatly increased, it cannot achieve good results. Such products often cannot provide long-lasting and stable high cutting force. [0003] In order to improve the grinding performance of the product and make ful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D11/00
Inventor 许亚杰张增明
Owner BEIJING GRISH HITECH
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