Diamond abrasive belt and preparation process thereof

Abstract

The invention relates to the field of diamond abrasive belts, in particular to a diamond abrasive belt which comprises a base material, a prime coat and a mortar layer, the prime coat is located between the base material and the mortar layer, namely one side of the prime coat adheres to the base material, and the other side of the prime coat adheres to the mortar layer; the formula of the base coat specifically comprises 20 parts by weight of an adhesive, 3 parts by weight of a thickening agent, 0.1 part by weight of a wetting agent, 5 parts by weight of an anti-slip agent and 10 parts by weight of a heavy diluent; the mortar layer comprises 10 parts by weight of an adhesive, 20 parts by weight of a hardening agent, 1 part by weight of color paste, 20 parts by weight of a 30-50 [mu] m agglomerated abrasive, 5 parts by weight of a coupling agent, 0.5 part by weight of a water repellent agent and 0.5 part by weight of an antistatic agent. And a layer of front scraping glue is scraped and coated on the base material to enhance the bonding capacity of the base material and the glue layer. Diamond stacked abrasive materials are used as abrasive materials, so that the abrasive materials still keep sharpness after being abraded, meanwhile, grinding heat generated in the grinding process can be reduced, and the service life of the abrasive belt is prolonged while the grinding effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of diamond abrasive belts, in particular to a diamond abrasive belt and a preparation process thereof. Background Art

[0002] Abrasive belt products are common abrasive coated tools, which are necessary supporting tools for the development of manufacturing industry, especially suitable for grinding new metal materials. They have important applications in automobile manufacturing, aerospace and other fields. Titanium alloy is a new hot material, but its high strength and high chemical activity make traditional abrasive belts have problems of low life and stickiness when grinding titanium alloy, so the abrasive belts need to be replaced frequently, which reduces work efficiency;

[0003] For this reason, we proposed a diamond abrasive belt and its preparation process. Summary of the invention

[0004] The object of the present invention is to provide a diamond abrasive belt, comprising a substrate, a primer and a mortar layer, wherein the primer is located between the substrate and the mortar layer, that is, one side is adhered to the substrate, and the other side is adhered to the mortar layer;

[0005] The primer formula is as follows: comprising 20 to 40 parts by weight of adhesive, 3 to 10 parts by weight of thickener, 0.1 to 3.0 parts by weight of wetting agent, 5 to 20 parts by weight of anti-slip agent, and 10 to 30 parts by weight of heavy diluent;

[0006] The formula of the mortar layer includes 10 parts by weight to 30 parts by weight of adhesive: 20 parts by weight to 40 parts by weight of hardener: 0 parts by weight to 1 part by weight of leveling agent: 1 part by weight to 5 parts by weight of color paste: 20 parts by weight to 50 parts by weight of 30-50 μm agglomerated abrasive: 0 parts by weight to 10 parts by weight of thixotropic agent: 5 parts by weight to 10 parts by weight of coupling agent: 0.5 parts by weight to 1 part by weight of hydrophobic agent: 0.5 parts by weight to 1 part by weight of antistatic agent.

[0007] Preferably: the primer formula is as follows: comprising 20 parts by weight of adhesive, 3 parts by weight of thickener, 0.1 parts by weight of wetting agent, 5 parts by weight of anti-slip agent, and 10 parts by weight of heavy diluent;

[0008] The formula of the mortar layer includes 10 parts by weight of adhesive, 20 parts by weight of hardener, 1 part by weight of color paste, 20 parts by weight of 30-50 μm agglomerated abrasive, 5 parts by weight of coupling agent, 0.5 parts by weight of hydrophobic agent and 0.5 parts by weight of antistatic agent.

[0009] Preferably: the primer formula is as follows: including 40 parts by weight of adhesive, 10 parts by weight of thickener, 3.0 parts by weight of wetting agent, 20 parts by weight of anti-slip agent, and 30 parts by weight of heavy diluent;

[0010] The formula of the mortar layer includes 20 parts by weight of adhesive, 30 parts by weight of hardener, 0.5 parts by weight of leveling agent, 3 parts by weight of color paste, 30 parts by weight of 30-50 μm agglomerated abrasive, 5 parts by weight of thixotropic agent, 8 parts by weight of coupling agent, 0.8 parts by weight of hydrophobic agent and 0.8 parts by weight of antistatic agent.

[0011] Preferably: the primer formula is as follows: comprising 30 parts by weight of adhesive, 7 parts by weight of thickener, 1.5 parts by weight of wetting agent, 10 parts by weight of anti-slip agent, and 20 parts by weight of heavy diluent;

[0012] The formula of the mortar layer includes 30 parts by weight of adhesive, 40 parts by weight of hardener, 1 part by weight of leveling agent, 5 parts by weight of color paste, 50 parts by weight of 30-50 μm agglomerated abrasive, 10 parts by weight of thixotropic agent, 10 parts by weight of coupling agent, 1 part by weight of hydrophobic agent and 1 part by weight of antistatic agent.

[0013] Furthermore: the substrate includes polyurethane resin and modified epoxy resin.

[0014] Furthermore: the thickener includes modified castor oil, and the wetting and dispersing agent includes silicone or nonionic wetting and dispersing agents.

[0015] Furthermore, the agglomerated abrasive has a particle diameter of 2-3 μm before agglomeration and a particle diameter of 30-50 μm after agglomeration.

[0016] A preparation process of a diamond abrasive belt is characterized in that: the preparation process steps are as follows;

[0017] Substrate - primer - drying - scraping mortar - drying and curing - back scraping - finished product.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In order to solve the problems in the grinding process, the present invention uses a special diamond abrasive and performs special treatment on the substrate. A layer of positive scraping glue is applied to the substrate to enhance the bonding ability between the substrate and the glue layer. The abrasive uses diamond stacking abrasive, so that the abrasive still maintains sharpness after wear, and also reduces the grinding heat generated during the grinding process, thereby ensuring the grinding effect and extending the service life of the abrasive belt.

[0020] Adding a primer layer between the substrate and the adhesive layer can change the surface tension between the adhesive layer and the substrate, making the adhesive layer flow better on the substrate, preventing shrinkage holes from occurring, and ensuring the adhesion and heat resistance of the mortar layer and the substrate.

[0021] The present invention adds clustered abrasives to the mortar layer for the first time. The particle size of the abrasives before agglomeration is 2-3μm, and the particle size after agglomeration is 30-50μm. Compared with traditional abrasives, the abrasives have more outstanding sharpness, and the abrasives fall off layer by layer during use, with a service life of more than 10 times, which can not only ensure good cutting performance but also increase the life of the product.

[0022] The present invention uses a coupling agent to perform special surface treatment on the abrasive, so that the abrasive and the binder are more firmly combined, and the abrasive is prevented from falling off due to loose combination during grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a comparison chart of the grinding performance of the group diamond abrasive belt of the present invention and a common diamond abrasive belt;

[0024] Figure 2 This is the appearance diagram of the abrasive belt of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] A diamond abrasive belt comprises a substrate, a primer and a mortar layer, wherein the primer is located between the substrate and the mortar layer, that is, one side of the primer is adhered to the substrate, and the other side of the primer is adhered to the mortar layer;

[0028] The preparation process of a diamond abrasive belt is characterized in that the preparation process steps are as follows: substrate-priming-drying-scraping rubber sand-drying and curing-back scraping-finished product.

[0029] The primer formula is as follows: 20 parts by weight of adhesive, 3 parts by weight of thickener, 0.1 parts by weight of wetting agent, 5 parts by weight of anti-slip agent, and 10 parts by weight of heavy diluent;

[0030] The formula of the mortar layer includes 10 parts by weight of adhesive, 20 parts by weight of hardener, 1 part by weight of color paste, 20 parts by weight of 30-50 μm agglomerated abrasive, 5 parts by weight of coupling agent, 0.5 parts by weight of hydrophobic agent and 0.5 parts by weight of antistatic agent.

[0031] Example 2

[0032] The primer formula is as follows: 40 parts by weight of adhesive, 10 parts by weight of thickener, 3.0 parts by weight of wetting agent, 20 parts by weight of anti-slip agent, and 30 parts by weight of heavy diluent;

[0033] The formula of the mortar layer includes 20 parts by weight of adhesive, 30 parts by weight of hardener, 0.5 parts by weight of leveling agent, 3 parts by weight of color paste, 30 parts by weight of 30-50 μm agglomerated abrasive, 5 parts by weight of thixotropic agent, 8 parts by weight of coupling agent, 0.8 parts by weight of hydrophobic agent and 0.8 parts by weight of antistatic agent.

[0034] Example 3

[0035] The primer formula is as follows: 30 parts by weight of adhesive, 7 parts by weight of thickener, 1.5 parts by weight of wetting agent, 10 parts by weight of anti-slip agent, and 20 parts by weight of heavy diluent;

[0036] The formula of the mortar layer includes 30 parts by weight of adhesive, 40 parts by weight of hardener, 1 part by weight of leveling agent, 5 parts by weight of color paste, 50 parts by weight of 30-50 μm agglomerated abrasive, 10 parts by weight of thixotropic agent, 10 parts by weight of coupling agent, 1 part by weight of hydrophobic agent and 1 part by weight of antistatic agent.

[0037] It should be particularly noted in the above embodiments that the base material includes polyurethane resin and modified epoxy resin, the purpose of which is to tightly bond the base material and the mortar layer together.

[0038] The thickener includes modified castor oil and organic bentonite, which prevent the base glue from sagging; the wetting and dispersing agent includes silicone or non-ionic wetting and dispersing agent, which promotes the leveling of the base glue on the surface of the substrate and improves the bonding force between the base glue and the mortar layer.

[0039] The agglomerated abrasive has a particle diameter of 2-3 μm before agglomeration and a particle diameter of 30-50 μm after agglomeration.

[0040] Xylene: It mainly acts as a solvent to disperse the material evenly.

[0041] Binder: The binder used in the present invention is one of epoxy resin and phenolic resin. The hardener is one of polyamide, methyltetrahydrophthalic anhydride and isocyanate. The binder and the hardener work together to form a continuous adhesive film on the surface of the substrate. The type of the selected binder and the ratio of the hardener should be well matched, otherwise the adhesive layer will be too soft, which is easy to wear during grinding or not firmly bonded to the abrasive.

[0042] Leveling agent: The leveling agent selected in this invention is an acrylic leveling agent or a silicone leveling agent, whose main function is to change the surface tension of the ingredients, improve the leveling and uniformity of the rubber, which can not only reduce the occurrence of shrinkage holes or spots during coating, but also make the film formation of the rubber more uniform.

[0043] Thixotropic agent: The thixotropic agent used in the present invention is one or more of fumed silica, organic bentonite, and hydrogenated castor oil. Its main function is to prevent the abrasive in the rubber layer from settling and causing the sharpness to decrease. It can also prevent the product from easily flowing during the drying process.

[0044] Coupling agent: The coupling agent used in the present invention is one or more of an organic chromium complex coupling agent, a silane coupling agent, and a titanate coupling agent. The main function is to enhance the bonding ability between the resin and the diamond abrasive so that the diamond is not easy to fall off during the grinding process.

[0045] Hydrophobic agent: The hydrophobic agent used in the present invention is one or more of paraffin, polyolefin, and silicone resin. The main function is

[0046] Agglomerated abrasive: The abrasive used in the present invention is agglomerated abrasive. The abrasive is a spherical abrasive with uniform particle size, which is made by combining one or more of diamond, silicon carbide and boron nitride in a special ratio through a special ceramic binder. The abrasive has a multi-edge angle structure, which can achieve efficient and precise polishing and grinding. It can maintain good cutting performance during long-term use and also improve the life of the product.

[0047] Antistatic agent: Antistatic agent is anionic antistatic agent, alkyl sulfonate, alkyl sulfate, etc. Its function is to reduce the clogging of the material surface by grinding chips during the grinding process, further extending the service life.

[0048] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A diamond abrasive belt, characterized in that: It comprises a substrate, a primer and a mortar layer, wherein the primer is located between the substrate and the mortar layer, that is, one side of the primer is adhered to the substrate, and the other side of the primer is adhered to the mortar layer; The primer formula is as follows: comprising 20 to 40 parts by weight of adhesive, 3 to 10 parts by weight of thickener, 0.1 to 3.0 parts by weight of wetting agent, 5 to 20 parts by weight of anti-slip agent, and 10 to 30 parts by weight of heavy diluent; The formula of the mortar layer includes 10 parts by weight to 30 parts by weight of adhesive: 20 parts by weight to 40 parts by weight of hardener: 0 parts by weight to 1 part by weight of leveling agent: 1 part by weight to 5 parts by weight of color paste: 20 parts by weight to 50 parts by weight of 30-50 μm agglomerated abrasive: 0 parts by weight to 10 parts by weight of thixotropic agent: 5 parts by weight to 10 parts by weight of coupling agent: 0.5 parts by weight to 1 part by weight of hydrophobic agent: 0.5 parts by weight to 1 part by weight of antistatic agent.

2. A diamond abrasive belt according to claim 1, characterized in that: The primer formula is as follows: 20 parts by weight of adhesive, 3 parts by weight of thickener, 0.1 parts by weight of wetting agent, 5 parts by weight of anti-slip agent, and 10 parts by weight of heavy diluent; The formula of the mortar layer includes 10 parts by weight of adhesive, 20 parts by weight of hardener, 1 part by weight of color paste, 20 parts by weight of 30-50 μm agglomerated abrasive, 5 parts by weight of coupling agent, 0.5 parts by weight of hydrophobic agent and 0.5 parts by weight of antistatic agent.

3. A diamond abrasive belt according to claim 1, characterized in that: The primer formula is as follows: 40 parts by weight of adhesive, 10 parts by weight of thickener, 3.0 parts by weight of wetting agent, 20 parts by weight of anti-slip agent, and 30 parts by weight of heavy diluent; The formula of the mortar layer includes 20 parts by weight of adhesive, 30 parts by weight of hardener, 0.5 parts by weight of leveling agent, 3 parts by weight of color paste, 30 parts by weight of 30-50 μm agglomerated abrasive, 5 parts by weight of thixotropic agent, 8 parts by weight of coupling agent, 0.8 parts by weight of hydrophobic agent and 0.8 parts by weight of antistatic agent.

4. A diamond abrasive belt and a preparation process thereof according to claim 1, characterized in that: The primer formula is as follows: 30 parts by weight of adhesive, 7 parts by weight of thickener, 1.5 parts by weight of wetting agent, 10 parts by weight of anti-slip agent, and 20 parts by weight of heavy diluent; The formula of the mortar layer includes 30 parts by weight of adhesive, 40 parts by weight of hardener, 1 part by weight of leveling agent, 5 parts by weight of color paste, 50 parts by weight of 30-50 μm agglomerated abrasive, 10 parts by weight of thixotropic agent, 10 parts by weight of coupling agent, 1 part by weight of hydrophobic agent and 1 part by weight of antistatic agent.

5. A diamond abrasive belt according to claim 1, characterized in that: The substrate comprises polyurethane resin and modified epoxy resin.

6. A diamond abrasive belt according to claim 1, characterized in that: The thickener includes modified castor oil, and the wetting and dispersing agent includes an organic silicon or nonionic wetting and dispersing agent.

7. A diamond abrasive belt according to claim 1, characterized in that: The agglomerated abrasive has a particle diameter of 2-3 μm before agglomeration and a particle diameter of 30-50 μm after agglomeration.

8. A preparation process of a diamond abrasive belt is characterized by: A diamond abrasive belt comprising any one of claims 1 to 7, wherein the preparation process steps are as follows; Substrate - primer - drying - scraping mortar - drying and curing - back scraping - finished product.

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