Wet hard fine polishing wheel polishing material and preparation method thereof

A polishing material and hard technology, applied in the field of wet hard polishing wheel polishing material and its preparation, can solve the problems of affecting the polishing effect, the shape is not fixed, the volume is large, etc., so as to improve the grinding sharpness and grinding efficiency , The distribution of cells is uniform, and the effect of increasing the contact area

Inactive Publication Date: 2017-07-25
台山市远鹏研磨科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polishing materials with sheet-like flexible substrates such as sandpaper are not fixed in shape, so usually they can only be polished by hand or with hand tools, and the sheet-shaped polishing materials have poor heat dissipation, and the heat generated by friction may cause burns and discoloration of polished products and affect the overall polishing effect
Existing polishing materials can reduce the heat of friction to a certain extent, but their general volume is relatively large, and it is inconvenient to use when holding it by hand, and it is necessary to squeeze the shape of the polishing material when holding it to make the distance between the polishing surface and the workpiece The contact area between them becomes smaller, and the polishing material cannot be effectively used

Method used

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Examples

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Effect test

preparation example Construction

[0033] The invention also discloses a preparation method of a wet hard fine polishing wheel polishing material, comprising the following steps:

[0034] S1: Mix polyether polyol and polyisocyanate and react at 60-90°C for 3-5 hours to prepare polyurethane prepolymer;

[0035] S2: Mix the abrasive with the coupling agent and react at 100-200°C for 1-2 hours to prepare the modified abrasive;

[0036] S3: Mix the polyurethane prepolymer obtained in step S1 with the modified abrasive obtained in step S2 and pour it into the mold evenly, and add chain extender, foaming agent, catalyst and water for foaming, and react at 100-150°C for 2-3 hours After cooling, the wet hard fine polishing wheel polishing material is obtained.

Embodiment 1

[0038] The wet hard fine polishing wheel polishing material of the present embodiment includes the following raw materials in parts by weight: 100 parts of polyether polyol, 60 parts of toluene diisocyanate, 40 parts of silicon carbide, 10 parts of silane coupling agent, 10 parts of glycerin , 5 parts of n-pentane, 0.5 part of stannous octoate, and 1 part of water. Wherein, the polyether polyol is a mixture obtained by mixing a polyether diol with a molecular weight of 2000 and a polyether triol with a molecular weight of 500 at a molar ratio of 2:1; the functionality of the polyether polyol is 3; The particle size of the silicon carbide is 1 μm.

[0039] The preparation method of described wet hard fine polishing wheel material, comprises the following steps:

[0040] (1) Take a polyether diol with a molecular weight of 2000 and a polyether triol with a molecular weight of 500 at a molar ratio of 2:1, place them in a reaction vessel, stir and mix them evenly to prepare a pol...

Embodiment 2

[0045]The wet hard fine polishing wheel polishing material of the present embodiment comprises the following raw materials in parts by weight: 90 parts of polyether polyols, 40 parts of diphenylmethane diisocyanate, 30 parts of silicon carbide, 6 parts of silane coupling agents, ethylene glycol 8 parts of amine, 3 parts of tetrahydrofuran, 0.1 part of dibutyltin dilaurate, and 2 parts of water. Wherein, the polyether polyol is a mixture obtained by mixing a polyether diol with a molecular weight of 3000 and a polyether triol with a molecular weight of 1000 at a molar ratio of 2.5:1; the functionality of the polyether polyol is 5; The particle diameter of the silicon carbide is 2 μm.

[0046] The preparation method of described wet type hard finish polishing wheel polishing material, comprises the following steps:

[0047] (1) Take a polyether diol with a molecular weight of 3000 and a polyether triol with a molecular weight of 1000 at a molar ratio of 2.5:1, place them in a r...

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Abstract

The invention relates to a wet hard fine polishing wheel polishing material, which is prepared from the following ingredients in parts by weight: 90 to 100 parts of polyether polyol, 40 to 60 parts of polyisocyanates, 30 to 40 parts of abrasive materials, 6 to 10 parts of coupling agents, 8 to 10 parts of chain expanding agents, 3 to 6 parts of foaming agents, 0.1 to 0.5 part of catalysts and 1 to 2 part of water. Through a two-step method, polyurethane prepolymers and modified grinding materials are firstly prepared respectively and are then mixed to perform a foaming reaction; the problems of great foam hole distribution differences and polishing material property brittlement due to serious heat release of the one-step integrated reaction are solved. The prepared wet hard fine polishing wheel polishing material has the advantages that the foam hole distribution is uniform; the texture is soft and elastic; the fine gap grinding of objects can be realized; the contact area between the grinding materials and a workpiece can be increased; the grinding efficiency is improved; meanwhile, good heat radiation performance is realized.

Description

technical field [0001] The invention relates to the technical field of grinding and polishing, in particular to a wet hard fine polishing wheel polishing material and a preparation method thereof. Background technique [0002] Polishing materials with sheet-like flexible substrates such as sandpaper are not fixed in shape, so usually they can only be polished by hand or with hand tools, and the sheet-like polishing materials have poor heat dissipation, and the heat generated by friction may cause burns and discoloration of polished products and affect the overall Polished effect. Existing polishing materials can reduce the heat of friction to a certain extent, but their general volume is relatively large, and it is inconvenient to use when holding it by hand, and it is necessary to squeeze the shape of the polishing material when holding it to make the distance between the polishing surface and the workpiece The contact area between them becomes smaller, and the polishing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08G18/12C08K9/06C08K9/04C08K3/34C08K3/22C08J9/14C08J9/08C09G1/02C08G101/00
CPCC08G18/4812C08G18/12C08G2101/00C08J9/08C08J9/141C08J2203/02C08J2203/14C08J2203/184C08J2375/08C08K3/22C08K3/34C08K9/04C08K9/06C08K2003/2213C08K2003/2244C09G1/02C08G18/3206C08G18/3228
Inventor 颜杰钦
Owner 台山市远鹏研磨科技有限公司
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