Preparation method of a new ceramic brush roller

Abstract

The invention discloses a preparation method of a novel ceramic brush roller, comprising the following steps: S1, pouring abrasive, filler, phenolic resin liquid, ice crystal powder and pore-forming agent into a blender for thorough mixing and stirring, and then filtering the mixture with a screen; S2, placing the mixture in S1 into a mold, evacuating the mixture, and quickly placing the mixture in a 200°C vulcanizer for hot pressing for 2 hours, cooling and demolding the mixture to obtain a ceramic abrasive disc; S3, coating a layer of adhesive on the surface of the ceramic abrasive disc to form an adhesive layer, and then laminating a rubber sheet on the adhesive layer and pressing the rubber sheet for 1 hour to obtain a finished ceramic abrasive disc; S4, cutting the finished ceramic abrasive disc into ceramic particles, and then laminating the ceramic particles on a paper tube to preliminarily form a ceramic brush roller; S5, grinding the preliminarily obtained ceramic brush roller with a grinder to obtain a finished ceramic brush roller. The ceramic brush roller prepared by the method has good toughness and good polishing effect of PCB boards, and the preparation process is simple, and is worthy of vigorous promotion and application.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic brush roller preparation, in particular to a preparation method of a novel ceramic brush roller. Background Art

[0002] The rapid development of electronic circuits has necessitated an increase in high-precision standards. The PCB industry's production and manufacturing processes require surface grinding of semi-finished boards to meet the technical requirements of various processes, leading to increased requirements and standards for PCB production. Traditionally, semi-finished PCB grinding processes typically utilize non-woven brush rollers, nylon brush rollers, abrasive belts, or grinding wheels. While these products offer significant cost advantages, they are no longer sufficient to achieve the desired results in semi-finished PCB processing. These traditional products often suffer from surface scratches, insufficient grinding force, a short lifespan, and chipping and hole plugging. Newer products, such as conventional ceramic brush rollers, avoid these issues during use.

[0003] At present, the preparation process of ceramic brush rollers on the market is complicated, the manufactured ceramic brush rollers have poor toughness, and the polishing effect on PCB boards is poor. Therefore, the inventors have improved the preparation method of ceramic brush rollers. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preparing a new type of ceramic brush roller. The ceramic brush roller prepared by this method has good toughness and good polishing effect of PCB boards. At the same time, it has the advantage of simple preparation process, which solves the problems raised by the above technical background.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for preparing a novel ceramic brush roller, comprising the following steps:

[0006] S1. Pour 65-70% of abrasive, 10-35% of filler, 1-10% of phenolic resin liquid, 5-10% of ice crystal powder and 10-15% of pore-forming agent into a blender, mix them thoroughly and stir them evenly, and then filter them through a sieve to obtain a mixture;

[0007] S2, the mixture in S1 is molded into a vacuum, and quickly placed in a 200 ° C vulcanizer for hot pressing for 2 hours, cooled and demolded to obtain a ceramic grinding disc;

[0008] S3. Use an air gun to clean the surface of the ceramic abrasive disc, and apply a layer of adhesive with a thickness of 0.5 mm to 5 mm on the surface of the ceramic abrasive disc to form an adhesive layer on the surface of the ceramic abrasive disc. Then, a rubber sheet with a thickness of 5 mm to 20 mm is attached to the adhesive layer and pressed for 1 hour to obtain a finished ceramic abrasive disc;

[0009] S4, cutting the finished ceramic grinding disc into ceramic particles, and then sticking the ceramic particles on the paper tube to preliminarily form a ceramic brush roller;

[0010] S5. The ceramic brush roller obtained is ground by a grinding machine with a rotation speed of 2500 r / min to obtain a finished ceramic brush roller.

[0011] Preferably, the abrasive is selected from any one or more of green silicon carbide, black silicon carbide, aluminum oxide, silicon dioxide, and boron nitride.

[0012] Preferably, the filler is organically modified high-purity, high-hardness glass powder or transparent powder.

[0013] Preferably, the pore-forming agent is sawdust or waste plastic particles.

[0014] Preferably, the ice crystal powder contains F ≥ 53%, Al ≥ 13%, and Na ≤ 29%, and the particle size is required to be 80 mesh.

[0015] Preferably, the screen in S1 is a double-layer screen, and the double-layer screen is a 500-mesh screen.

[0016] Preferably, the thickness of the ceramic grinding disc in S2 is between 2 mm and 10 mm.

[0017] Preferably, the adhesive in S3 is a two-component epoxy adhesive, wherein the two components are alicyclic amine and dimer acid-modified epoxy resin.

[0018] Preferably, the particle size of the ceramic particles in S4 is between 3 mm and 15 mm.

[0019] Preferably, a sponge is pasted on the paper tube in S4, and the paper tube is recycled from waste paper tubes, which is mainly composed of 80% waste paper tubes, 10% nanocellulose fiber organic pulp, 1% wine lees, 2% reinforcing agent, 1.5% waterproofing agent, 1.5% mildew inhibitor and 4% flame retardant.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention provides a preparation method of a novel ceramic brush roller, which comprises pouring abrasive, filler, phenolic resin liquid, ice crystal powder and pore-forming agent into a blender for thorough mixing and stirring, and then filtering the mixture through a screen, wherein the screen is a double-layer screen, and the double-layer screen is a 500-mesh screen, which can remove irregular and unevenly sized agglomerates and ensure the consistency of the mixture. By using phenolic resin liquid as the main raw material, the reaction is more sufficient, and the prepared ceramic brush roller has better toughness. Sawdust or waste plastic particles are used to form holes, and the cost is low. The paper tube is recycled from the waste paper tube, which is mainly composed of 80% waste paper tube, 10% nanocellulose fiber organic pulp, 1% wine lees, 2% reinforcing agent, 1.5% waterproofing agent, 1.5% mildew inhibitor and 4% flame retardant. The paper tube mainly adopts the waste paper tube, which can be recycled and is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of the preparation process of the present invention. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 The present invention provides a method for preparing a novel ceramic brush roller, comprising the following steps:

[0025] S1. Pour 65-70% of abrasive, 10-35% of filler, 1-10% of phenolic resin liquid, 5-10% of ice crystal powder and 10-15% of pore-forming agent into a blender, mix them thoroughly and stir them evenly, and then filter them through a sieve to obtain a mixture;

[0026] S2, the mixture in S1 is molded into a vacuum, and quickly placed in a 200 ° C vulcanizer for hot pressing for 2 hours, cooled and demolded to obtain a ceramic grinding disc;

[0027] S3. Use an air gun to clean the surface of the ceramic abrasive disc, and apply a layer of adhesive with a thickness of 0.5 mm to 5 mm on the surface of the ceramic abrasive disc to form an adhesive layer on the surface of the ceramic abrasive disc. Then, a rubber sheet with a thickness of 5 mm to 20 mm is attached to the adhesive layer and pressed for 1 hour to obtain a finished ceramic abrasive disc;

[0028] S4, cutting the finished ceramic grinding disc into ceramic particles, and then sticking the ceramic particles on the paper tube to preliminarily form a ceramic brush roller;

[0029] S5. The ceramic brush roller obtained is ground by a grinding machine with a rotation speed of 2500 r / min to obtain a finished ceramic brush roller.

[0030] The preparation method of the organic ceramic abrasive brush of the present invention will be described in detail below with reference to specific examples. All reagents in the examples can be obtained commercially.

[0031] Example 1:

[0032] A method for preparing a novel ceramic brush roller comprises the following steps:

[0033] S1, 65% of abrasive, 10% of filler, 10% of phenolic resin liquid, 5% of ice crystal powder and 10% of pore-forming agent were poured into a blender and thoroughly mixed and stirred, and then filtered through a sieve to obtain a mixture, wherein the sieve was a double-layer sieve, and the double-layer sieve was a 500-mesh sieve;

[0034] S2, the mixture in S1 is molded into a vacuum, and quickly placed in a 200 ° C vulcanizer for hot pressing for 2 hours, cooled and demolded to obtain a ceramic grinding disc, the thickness of which is between 2mm and 10mm;

[0035] S3. Use an air gun to clean the surface of the ceramic abrasive disc, and apply a layer of adhesive with a thickness of 0.5 mm to 5 mm on the surface of the ceramic abrasive disc to form an adhesive layer on the surface of the ceramic abrasive disc. Then, a rubber sheet with a thickness of 5 mm to 20 mm is attached to the adhesive layer and pressed for 1 hour to obtain a finished ceramic abrasive disc. The adhesive is a two-component epoxy adhesive, and the two components are alicyclic amine and dimer acid-modified epoxy resin respectively.

[0036] S4, cutting the finished ceramic grinding disc into ceramic particles, and then sticking the ceramic particles on a paper tube to preliminarily form a ceramic brush roller, wherein the particle size of the ceramic particles is between 3mm and 15mm, and a sponge is stuck on the paper tube, and the paper tube is recycled from waste paper tubes, which is mainly composed of 80% waste paper tubes, 10% nanocellulose fiber organic pulp, 1% wine lees, 2% reinforcing agent, 1.5% waterproofing agent, 1.5% mildew inhibitor and 4% flame retardant;

[0037] S5. The ceramic brush roller obtained is ground by a grinding machine with a rotation speed of 2500 r / min to obtain a finished ceramic brush roller.

[0038] The abrasive is selected from any one or more of green silicon carbide, black silicon carbide, aluminum oxide, silicon dioxide, and boron nitride; the filler is high-purity, high-hardness glass powder or transparent powder modified with organic matter; the pore-forming agent is sawdust or waste plastic particles; the F content of the ice crystal powder is ≥53%, Al ≥13%, and Na ≤29%, and the particle size is required to be 80 mesh.

[0039] Example 2:

[0040] The present invention provides a method for preparing a novel ceramic brush roller, comprising the following steps:

[0041] S1, 70% of abrasive, 10% of filler, 5% of phenolic resin liquid, 5% of ice crystal powder and 10% of pore-forming agent were poured into a blender and thoroughly mixed and stirred, and then filtered through a sieve to obtain a mixture, wherein the sieve was a double-layer sieve, and the double-layer sieve was a 500-mesh sieve;

[0042] S2, the mixture in S1 is molded into a vacuum, and quickly placed in a 200 ° C vulcanizer for hot pressing for 2 hours, cooled and demolded to obtain a ceramic grinding disc, the thickness of which is between 2mm and 10mm;

[0043] S3. Use an air gun to clean the surface of the ceramic abrasive disc, and apply a layer of adhesive with a thickness of 0.5 mm to 5 mm on the surface of the ceramic abrasive disc to form an adhesive layer on the surface of the ceramic abrasive disc. Then, a rubber sheet with a thickness of 5 mm to 20 mm is attached to the adhesive layer and pressed for 1 hour to obtain a finished ceramic abrasive disc. The adhesive is a two-component epoxy adhesive, and the two components are alicyclic amine and dimer acid-modified epoxy resin respectively.

[0044] S4, cutting the finished ceramic grinding disc into ceramic particles, and then sticking the ceramic particles on a paper tube to preliminarily form a ceramic brush roller, wherein the particle size of the ceramic particles is between 3mm and 15mm, and a sponge is stuck on the paper tube, and the paper tube is recycled from waste paper tubes, which is mainly composed of 80% waste paper tubes, 10% nanocellulose fiber organic pulp, 1% wine lees, 2% reinforcing agent, 1.5% waterproofing agent, 1.5% mildew inhibitor and 4% flame retardant;

[0045] S5. The ceramic brush roller obtained is ground by a grinding machine with a rotation speed of 2500 r / min to obtain a finished ceramic brush roller.

[0046] The abrasive is selected from any one or more of green silicon carbide, black silicon carbide, aluminum oxide, silicon dioxide, and boron nitride; the filler is high-purity, high-hardness glass powder or transparent powder modified with organic matter; the pore-forming agent is sawdust or waste plastic particles; the F content of the ice crystal powder is ≥53%, Al ≥13%, and Na ≤29%, and the particle size is required to be 80 mesh.

[0047] In this embodiment, the abrasive material is a mixture of 60% green silicon carbide and 40% black silicon, the filler is high-purity and high-hardness glass powder modified with organic matter, the pore-forming agent is waste plastic particles, the F content in the ice crystal powder is ≥53%, Al ≥13%, and Na ≤29%, and the particle size requirement is 80 mesh.

[0048] Example 3:

[0049] This embodiment is substantially the same as the first embodiment, except that in S1, 65% of abrasive, 15% of filler, 4% of phenolic resin solution, 4% of ice crystal powder, and 12% of pore-forming agent are poured into a blender and thoroughly mixed and stirred until uniform. The mixture is then filtered through a double-layer 500-mesh sieve to obtain a mixture. All other explanations of this embodiment refer to those of the first embodiment and are not further described here.

[0050] The ceramic brush roller prepared by adopting the above three embodiments has good toughness and good polishing effect of PCB board. At the same time, the preparation process is simple and it is worthy of being widely promoted and applied.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A method for preparing a novel ceramic brush roller, characterized in that: The following steps are involved: S1. Pour 65-70% of abrasive, 10-35% of filler, 1-10% of phenolic resin liquid, 5-10% of ice crystal powder and 10-15% of pore-forming agent into a blender, mix them thoroughly and stir them evenly, and then filter them through a sieve to obtain a mixture; S2, the mixture in S1 is molded into a vacuum, and quickly placed in a 200 ° C vulcanizer for hot pressing for 2 hours, cooled and demolded to obtain a ceramic grinding disc; S3. Use an air gun to clean the surface of the ceramic abrasive disc, and apply a layer of adhesive with a thickness of 0.5 mm to 5 mm on the surface of the ceramic abrasive disc to form an adhesive layer on the surface of the ceramic abrasive disc. Then, a rubber sheet with a thickness of 5 mm to 20 mm is attached to the adhesive layer and pressed for 1 hour to obtain a finished ceramic abrasive disc; S4, cutting the finished ceramic grinding disc into ceramic particles, and then sticking the ceramic particles on the paper tube to preliminarily form a ceramic brush roller; S5. The ceramic brush roller obtained is ground by a grinding machine with a rotation speed of 2500 r / min to obtain a finished ceramic brush roller.

2. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The abrasive is selected from any one or more of green silicon carbide, black silicon carbide, aluminum oxide, silicon dioxide, and boron nitride.

3. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The filler is organically modified high-purity and high-hardness glass powder or transparent powder.

4. The method for preparing a novel ceramic brush roller according to claim 1, wherein: The pore-forming agent is sawdust or waste plastic particles.

5. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The ice crystal powder contains F ≥ 53%, Al ≥ 13%, and Na ≤ 29%, and the particle size is required to be 80 mesh.

6. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The screen in S1 is a double-layer screen, and the double-layer screen is a 500-mesh screen.

7. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The thickness of the ceramic grinding disc in S2 is between 2 mm and 10 mm.

8. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The adhesive in S3 is a two-component epoxy adhesive, wherein the two components are alicyclic amine and dimer acid modified epoxy resin.

9. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The particle size of the ceramic particles in S4 is between 3 mm and 15 mm.

10. The method for preparing a novel ceramic brush roller according to claim 1, characterized in that: The S4 paper tube is pasted with a sponge, and the paper tube is recycled from waste paper tubes. It is mainly composed of 80% waste paper tubes, 10% nanocellulose fiber organic pulp, 1% wine lees, 2% reinforcing agent, 1.5% waterproofing agent, 1.5% mildew inhibitor and 4% flame retardant.

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