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Abrasive paper hydrophilic coating

A hydrophilic coating and hydrophilic technology, applied in the direction of epoxy resin coating, polyurea/polyurethane coating, coating, etc., can solve the problem of non-hydrophilic adhesive film layer, poor initial sharpness of sandpaper, and clogging of the grinding layer on the surface of sandpaper and other problems, to achieve the effect of improving hydrophilicity, good suspension, and not easy to reunite

Inactive Publication Date: 2020-03-17
DONGGUAN GOLDEN SUN ABRASIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the cured adhesive film layer is not hydrophilic, and when this type of sandpaper is used for wet grinding, water cannot evenly infiltrate the surface of the sandpaper, making the wet grinding effect poor; in addition, the initial sharpness of this type of sandpaper is poor, and the adhesive The film layer is easy to absorb grinding debris, which will cause the clogging of the grinding layer on the surface of the sandpaper and reduce the grinding effect

Method used

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  • Abrasive paper hydrophilic coating
  • Abrasive paper hydrophilic coating

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Experimental program
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Effect test

Embodiment 1

[0036] A kind of sandpaper hydrophilic coating is characterized in that: comprise the raw material of following weight part:

[0037] Abrasive 80 parts

[0038] Adhesive 10 parts

[0039] Hydrophilic additive 1 part.

[0040] The abrasive is alumina.

[0041] The adhesive is polyurethane adhesive.

[0042] The hydrophilic auxiliary agent is fatty alcohol polyoxyethylene ether AEO-7, and the HLB value is 12.

[0043] Described abrasive is the modified abrasive of modified treatment, and described modified abrasive is made by following steps:

[0044] (1) Mix allyl alcohol polyoxyethylene ether with deionized water, add polyethylene glycol after dispersing evenly, and prepare a pre-dispersion;

[0045] (2) Add the abrasive to the pre-dispersed liquid prepared in step (1), stir at room temperature for 15 minutes, then heat up to 75°C, and under the irradiation of ultraviolet rays with a wavelength of 328nm, stir for 30 minutes, then add calcium carbonate, and stir evenly. P...

Embodiment 2

[0053] A kind of sandpaper hydrophilic coating is characterized in that: comprise the raw material of following weight part:

[0054] Abrasive 82 parts

[0055] Adhesive 12 parts

[0056] Hydrophilic additive 2 parts.

[0057] The abrasive is silicon carbide.

[0058] The adhesive is epoxy resin adhesive.

[0059] The hydrophilic auxiliary agent is sodium oleate, and the HLB value is 18.

[0060] Described abrasive is the modified abrasive of modified treatment, and described modified abrasive is made by following steps:

[0061] (1) Mix allyl alcohol polyoxyethylene ether with deionized water, add polyethylene glycol after dispersing evenly, and prepare a pre-dispersion;

[0062] (2) Add the abrasive to the pre-dispersed liquid prepared in step (1), stir at room temperature for 16 minutes, then heat up to 76°C, and under the irradiation of ultraviolet rays with a wavelength of 334nm, stir for 28 minutes, then add calcium carbonate, and stir evenly. Prepare the mixture a...

Embodiment 3

[0070] A kind of sandpaper hydrophilic coating is characterized in that: comprise the raw material of following weight part:

[0071] Abrasive 85 parts

[0072] Adhesive 15 parts

[0073] 3 parts of hydrophilic additives.

[0074] The abrasive is a mixture of aluminum oxide and silicon carbide at a weight ratio of 1:1.

[0075] The adhesive is a mixture of polyurethane adhesive and epoxy resin adhesive with a weight ratio of 1:1.

[0076] The hydrophilic auxiliary agent is a mixture of sodium lauryl sulfate and sodium oleate, wherein the mixing weight ratio of sodium lauryl sulfate and sodium oleate is 40:60, and the HLB value is 30.

[0077] Described abrasive is the modified abrasive of modified treatment, and described modified abrasive is made by following steps:

[0078] (1) Mix allyl alcohol polyoxyethylene ether with deionized water, add polyethylene glycol after dispersing evenly, and prepare a pre-dispersion;

[0079] (2) Add the abrasive to the pre-dispersed liq...

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Abstract

The invention relates to the technical field of grinding tool materials, in particular to an abrasive paper hydrophilic coating. The abrasive paper hydrophilic coating is prepared from the following raw materials in parts by weight: 80-90 parts of grinding materials, 10-20 parts of an adhesive and 1-5 parts of a hydrophilic auxiliary agent. According to the hydrophilic coating disclosed by the invention, the hydrophilic auxiliary agent is adopted to improve the hydrophilicity of the coating layer, is matched with the adhesive to stably coat the surface of the abrasive paper with the coating, the formed hydrophilic coating can enable water to be uniformly infiltrated on the surface of the hydrophilic coating to ensure the uniform wetting of abrasive paper and increase the initial sharpnessof the abrasive paper, an adhesive film on the surface of a mortar layer is polished, the adhesive film on the surface of the mortar layer is removed, so that the polishing effect of the abrasive paper is improved; and moreover, the abrasive material in the hydrophilic coating can pre-polish a workpiece, the overall polishing effect of the abrasive paper is improved, the roughness of the polishedsurface of the workpiece is reduced, and the manufactured abrasive paper product has the hydrophilic, grinding-assisting and anti-blocking effects.

Description

technical field [0001] The invention relates to the technical field of abrasive materials, in particular to a hydrophilic coating for sandpaper. Background technique [0002] The current sandpaper is mostly mortar-coated sandpaper, and the adhesive component in the mortar of the mortar-coated sandpaper will overflow due to the effect of surface tension during the curing process, thus forming a thin layer of adhesive on the surface of the sandpaper. film layer. Moreover, the cured adhesive film layer is not hydrophilic, and when this type of sandpaper is used for wet grinding, water cannot evenly infiltrate the surface of the sandpaper, making the wet grinding effect poor; in addition, the initial sharpness of this type of sandpaper is poor, and the adhesive The film layer is easy to absorb grinding debris, which will cause the clogging of the grinding layer on the surface of the sandpaper and reduce the grinding effect. Contents of the invention [0003] In order to over...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D163/00C09D7/61
CPCC08K2003/2227C09D163/00C09D175/04C09D7/61C08K3/22C08K3/34C08L63/00C08L75/04
Inventor 方红胡中平
Owner DONGGUAN GOLDEN SUN ABRASIVES
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