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Preparation method of polyurethane matrix stone grinding and polishing sheet

A technology of polishing sheet and polyurethane, applied in the direction of grinding/polishing equipment, abrasives, grinding devices, etc., can solve the problems that the abrasive system is not suitable for stone grinding and polishing, the hardness and density of the matrix are not suitable for stone, and the stone grinding and polishing is not suitable , to achieve the best grinding and polishing effect, the best grinding force, and the effect of increasing the grinding rate

Active Publication Date: 2017-04-19
王建秋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the test point of view, the polishing effect of this type of polishing pad for stone is poor, and its existing technology and process are not suitable for grinding and polishing of stone.
Theoretically, one of the reasons is that the existing formula system of this type of polishing sheet is only suitable for the fine polishing of the surface of glass or other microcrystalline and amorphous objects; the second reason is that the existing formula of polyurethane resin for this type of polishing sheet The hardness and density of the matrix are not suitable for stone due to the system, and the third reason is that its abrasive system is not suitable for grinding and polishing of stone.

Method used

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  • Preparation method of polyurethane matrix stone grinding and polishing sheet
  • Preparation method of polyurethane matrix stone grinding and polishing sheet
  • Preparation method of polyurethane matrix stone grinding and polishing sheet

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0073] This example provides a set of manufacturing methods for marble grinding and polishing sheets. According to the different particle sizes of the abrasives used, 1#, 2#, 3#, 4#, 5#, 6#, and 7# have rough grinding, fine grinding and polishing functions. Grinding combination.

[0074] (1) Prefabricated component A: polyether triol (average molecular weight 350, hydroxyl value 500) 100 grams, tertiary amine catalyst dimethylcyclohexylamine 3 grams, chain extender ethylene glycol 5 grams, foaming agent 1.5 grams of pentane and 5 grams of plasticizer fumed silica powder were mixed and stirred evenly for later use. In this example, 7 parts of the same component A are prefabricated, which are used to prepare 1-7# grinding plate sets.

[0075] (2) Prepare component B: measure 35 grams of 270-300 µm synthetic diamond abrasive grains and 15 grams of 30-35 µm silicon carbide fine powder as 1# abrasive; measure 35 grams of 125-150 µm artificial diamond abrasive grains and 30-35 µm s...

example 2

[0082] (1) Example 2 uses the same ingredients of A and B as in Example 1. The same prefabricated seven parts of components A and B respectively.

[0083] (2) Subtract the polyamide-modified high-density polyethylene wax powder and polypropylene fiber in component C of Example 1. Seven copies are also prefabricated.

[0084] (3) Use the same process and procedure as Example 1 to prepare 1-7# grinding and polishing sheet groups.

example 3

[0086] (1) Example 3 uses exactly the same ingredients of A and C components as in Example 1. A and C components are prefabricated one each.

[0087] (2) Component B of Example 3 only uses the same ingredients as the 7# abrasive in Component B of Example 1, that is, 35 grams of 1-3 μm synthetic diamond abrasive grains. Component B is prefabricated in one copy.

[0088] (3) Use the same process and procedure as Example 1 to prepare 7# polished sheet.

[0089] (4) The 7# grinding and polishing sheet prepared in Example 3 can be used as a polishing material with independent functions in the polishing process of stone grinding, so as to replace the existing commercially available polishing sheets and polishing powder.

[0090] The following are the experimental test results and comparative test results of Example 1, Example 2 and Example 3.

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Abstract

A polyurethane matrix stone grinding and polishing pad and a preparation method thereof. The stone grinding and polishing pad relates to a novel stone grinding and polishing material made by preparing a polyurethane matrix and mixing therewith synthetic diamond powder, silicon carbide, silicon oxide, aluminum oxide, and a zinc oxide ultrafine powder as abrasive components. A density of the stone grinding and polishing material is 0.1 to 0.5 g / cm3, and a Shore A hardness thereof is 30 to 85. The polyurethane matrix has suitable foam walls and holes, and abrasive particles are mixed therein and distributed in a multi-dimensional structure of the polyurethane foam wall. The surface of a stone is ground under pressure and rotation of grinding equipment, while simultaneously, continuously and regularly releasing new sharp abrasive particles having a working face at a different layer. The abrasive particles have better self-sharpening performance, and thus have a higher grinding effect and efficiency.

Description

technical field [0001] The invention relates to a preparation method of a polyurethane-based stone grinding and polishing sheet as a novel stone grinding and polishing material. The grinding and polishing sheet is mainly used for surface grinding and polishing of decorative stones and renovation of stone floors. The invention belongs to the technical field of stone surface grinding and polishing. Background technique [0002] The surface of natural and artificial decorative stone has high gloss and clarity, which can better show the color and decorative effect of stone. Therefore, people often regard the surface gloss of stone as the standard for evaluating stone processing quality and surface effect. The surface grinding and polishing of stone slabs and the grinding and polishing of stone floor renovation are all achieved through professional equipment with different performances and materials with grinding functions. Therefore, grinding and polishing materials with better...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00B24D3/34B24D3/32C08L75/08C08L23/06C08L23/12C08K3/04C08K3/34C08K3/32C08K3/22C08J9/14C08G18/66C08G18/48C08G18/32
CPCB24D18/00C08L75/08
Inventor 王建秋王文婷
Owner 王建秋
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