Aluminum oxidation polishing solution and preparation method thereof

Abstract

The invention relates to the field of polishing solutions and preparation methods thereof, in particular to an aluminum oxidation polishing solution and a preparation method thereof, the aluminum oxidation polishing solution comprises the following components: acidic chemical substances, polishing particles, an active agent, a corrosion inhibitor and deionized water; the method comprises the following steps: 1, preparing an acidic solution; 2, polishing particles are added; step 3, adding an active agent and a slow-release agent; step 4, sieving the polishing solution; 5, sampling and detecting; the acid chemical substances in the polishing solution comprise mild citric acid and diluted hydrofluoric acid, compared with traditional strong-acid and strong-alkali substances, the corrosion or irritation is weak, during use, the harm to operators and the surrounding environment is small, the effectiveness of the polishing particles is kept, and meanwhile, the polishing effect of the polishing particles is greatly improved. The problem that large particles cause great damage to the surface of an object and are easy to generate scratches during polishing can be avoided; and the active agent and the slow-release agent are both made of environment-friendly materials, so that the degradability is good, and the safety performance is greatly guaranteed during use.

Description

Technical Field

[0001] The invention relates to the field of polishing liquid and a preparation method thereof, and in particular to an aluminum oxide polishing liquid and a preparation method thereof. Background Art

[0002] Aluminum oxide polishing liquid is a chemical product specially used for polishing the surface of aluminum products. It is mainly used to remove the oxide layer on the aluminum surface and restore the gloss of the aluminum surface. When using aluminum oxide polishing liquid, you can use a brush, sponge or special polishing tool to evenly apply the polishing liquid on the aluminum surface.

[0003] However, existing aluminum oxide polishing liquids usually contain the following ingredients: acidic or alkaline chemicals, such as sulfuric acid, hydrochloric acid, hydrofluoric acid or alkaline hydroxides, which can dissolve the aluminum oxide layer. The chemical components in the aluminum oxide polishing liquid are corrosive or irritating, so appropriate personal protective equipment should be worn when using it, otherwise it will be dangerous to the operator when using it.

[0004] Therefore, in order to solve the problem that the above-mentioned polishing liquid is highly corrosive or irritating and has certain dangers when used, an aluminum oxide polishing liquid and a preparation method thereof can be designed. Summary of the invention

[0005] In order to overcome the problem that the polishing liquid is highly corrosive or irritating and has certain dangers when used.

[0006] The technical solution of the present invention is: an aluminum oxide polishing liquid, comprising the following components: acidic chemicals, polishing particles, an active agent, a corrosion inhibitor, and deionized water; the proportions by weight are as follows:

[0007] Acidic chemicals: 20-30%;

[0008] Polishing particles: 15-20%;

[0009] Active agent: 5-10%;

[0010] Sustained release: 1-5%;

[0011] Deionized water: balance.

[0012] Preferably, the acidic chemical substance is citric acid, diluted hydrofluoric acid or a combination of the two; the concentration of the diluted hydrofluoric acid is 10%-15%.

[0013] Preferably, the polishing particles are made of one or a combination of silicon dioxide, aluminum oxide, and silicon carbide; the polishing particle grade is 0.1-3 μm.

[0014] Preferably, the active agent is a nonionic surfactant, a natural fatty acid salt, or a combination of both.

[0015] Preferably, the sustained-release agent is benzotriazole.

[0016] A method for preparing an aluminum oxide polishing liquid, comprising the aluminum oxide polishing liquid as described above, and the steps are as follows:

[0017] Step 1: Accurately measure the required acidic chemicals and put them into the mixer, add deionized water, heat the above ingredients, set the mixer parameters and stir until the acidic chemicals are completely dissolved in the water. The pH value of the solution should be controlled at 4-6;

[0018] Step 2: Cool the acidic solution prepared in step 1 to room temperature, take out the weighed polishing particles with a particle size of 0.1-3 μm and evenly put them into the acidic solution on both sides, set the mixer parameters and stir continuously to ensure that the polishing particles are evenly distributed in the solution;

[0019] Step 3: Add the active agent and sustained-release agent gradually and stir evenly;

[0020] Step 4: sieving the prepared aluminum oxide polishing liquid to remove insoluble matter in the aluminum oxide polishing liquid;

[0021] Step 5: Take out a proper amount of sample from the prepared aluminum oxide polishing liquid, and inspect the quality of the aluminum oxide polishing liquid sample to ensure the safety of the aluminum oxide polishing liquid;

[0022] Step 6: Select a clean container with good stability, package the prepared aluminum oxide polishing liquid, mark the ingredient information, production date, usage instructions, precautions and other relevant information on the outer packaging, and seal the container.

[0023] Preferably, in step 1, the solution needs to be heated to 35°C-40°C; in step 1, the mixer is set to rotate at 30-50 rpm; and the stirring time is 20-30 min.

[0024] Preferably, the prepared aluminum oxide polishing liquid will have polishing particle precipitation. When using it, it needs to be shaken for 1-2 minutes in advance to evenly mix the polishing particles.

[0025] Preferably, in step 2, the mixer is set to have a rotation speed of 50-100 rpm and a stirring time of 5-10 min.

[0026] Preferably, the aluminum oxide polishing liquid storage container in step six can be a plastic bottle or a glass bottle.

[0027] Preferably, the packaging specification of the aluminum oxide polishing liquid in step six is ​​500 ml / bottle.

[0028] Beneficial effects of the present invention:

[0029] The present invention adopts mild citric acid and diluted hydrofluoric acid as the acidic chemical substances in the polishing liquid. Compared with traditional strong acid and strong alkaline substances, the corrosiveness or irritation is weaker. When used, it causes less harm to operators and the surrounding environment. By adopting smaller polishing particles, while maintaining its effectiveness, it can avoid the problem that large particles cause great damage to the surface of the object and easily cause scratches during polishing. The activator and the sustained-release agent are both made of environmentally friendly materials with good degradability, and the safety performance is greatly guaranteed during use. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] Example 1

[0032] The present invention provides an embodiment: an aluminum oxide polishing liquid, characterized in that it comprises the following components: acidic chemicals, polishing particles, an active agent, a corrosion inhibitor, and deionized water; the proportions by weight are as follows:

[0033] Acidic chemicals: 30%;

[0034] Polishing particles: 15%;

[0035] Active agent: 8%;

[0036] Sustained release: 35%;

[0037] Deionized water: balance.

[0038] Preferably, the acidic chemical is citric acid.

[0039] Preferably, the polishing particles are silicon dioxide; the polishing particle level is 2 μm.

[0040] Preferably, the active agent is a nonionic surfactant.

[0041] Preferably, the sustained-release agent is benzotriazole.

[0042] A method for preparing an aluminum oxide polishing liquid, comprising the aluminum oxide polishing liquid as described above, and the steps are as follows:

[0043] Step 1: Accurately measure the required acidic chemicals and put them into the mixer, add deionized water, heat the above ingredients, set the mixer parameters and stir until the acidic chemicals are completely dissolved in the water. The pH value of the solution should be controlled at 4;

[0044] Step 2: Cool the acidic solution prepared in step 1 to room temperature, take out the weighed polishing particles with a particle size of 2 μm and evenly put them into the acidic solution on both sides, set the mixer parameters and stir continuously to ensure that the polishing particles are evenly distributed in the solution;

[0045] Step 3: Add the active agent and sustained-release agent gradually and stir evenly;

[0046] Step 4: sieving the prepared aluminum oxide polishing liquid to remove insoluble matter in the aluminum oxide polishing liquid;

[0047] Step 5: Take out a proper amount of sample from the prepared aluminum oxide polishing liquid, and inspect the quality of the aluminum oxide polishing liquid sample to ensure the safety of the aluminum oxide polishing liquid;

[0048] Step 6: Select a clean container with good stability, package the prepared aluminum oxide polishing liquid, mark the ingredient information, production date, usage instructions, precautions and other relevant information on the outer packaging, and seal the container.

[0049] Preferably, in step 1, the solution needs to be heated to 35° C.; in step 1, the mixer is set to rotate at 30 rpm; and the stirring time is 25 min.

[0050] Preferably, the prepared aluminum oxide polishing liquid will have polishing particle precipitation. When using it, it needs to be shaken for 1.5 minutes in advance to evenly mix the polishing particles.

[0051] Preferably, in step 2, the mixer is set to have a rotation speed of 50 rpm and a stirring time of 7 min.

[0052] Preferably, the storage container for the aluminum oxide polishing liquid in step six can be a plastic bottle.

[0053] Preferably, the packaging specification of the aluminum oxide polishing liquid in step six is ​​500 ml / bottle.

[0054] The aluminum oxide polishing liquid prepared in Example 1 has an acidic chemical substance added in an amount of 30%, which can quickly remove the slight oxide layer on the aluminum surface and clean the aluminum surface, but is slightly irritating to the skin, causing slight redness, swelling and stinging of the skin.

[0055] Example 2

[0056] The present invention provides an embodiment: an aluminum oxide polishing liquid, characterized in that it comprises the following components: acidic chemicals, polishing particles, an active agent, a corrosion inhibitor, and deionized water; the proportions by weight are as follows:

[0057] Acidic chemicals: 25%;

[0058] Polishing particles: 18%;

[0059] Active agent: 6%;

[0060] Sustained release: 3%;

[0061] Deionized water: balance.

[0062] Preferably, the acidic chemical is citric acid.

[0063] Preferably, the polishing particles are made of silicon carbide; the polishing particle level is 2 μm.

[0064] Preferably, the active agent is a nonionic surfactant.

[0065] Preferably, the sustained-release agent is benzotriazole.

[0066] A method for preparing an aluminum oxide polishing liquid, comprising the aluminum oxide polishing liquid as described above, and the steps are as follows:

[0067] Step 1: Accurately measure the required acidic chemicals and put them into the mixer, add deionized water, heat the above ingredients, set the mixer parameters and stir until the acidic chemicals are completely dissolved in the water. The pH value of the solution should be controlled at 5;

[0068] Step 2: Cool the acidic solution prepared in step 1 to room temperature, take out the weighed polishing particles with a particle size of 2 μm and evenly put them into the acidic solution on both sides, set the mixer parameters and stir continuously to ensure that the polishing particles are evenly distributed in the solution;

[0069] Step 3: Add the active agent and sustained-release agent gradually and stir evenly;

[0070] Step 4: sieving the prepared aluminum oxide polishing liquid to remove insoluble matter in the aluminum oxide polishing liquid;

[0071] Step 5: Take out a proper amount of sample from the prepared aluminum oxide polishing liquid, and inspect the quality of the aluminum oxide polishing liquid sample to ensure the safety of the aluminum oxide polishing liquid;

[0072] Step 6: Select a clean container with good stability, package the prepared aluminum oxide polishing liquid, mark the ingredient information, production date, usage instructions, precautions and other relevant information on the outer packaging, and seal the container.

[0073] Preferably, in step 1, the solution needs to be heated to 40° C.; in step 1, the mixer is set to rotate at 30 rpm; and the stirring time is 25 min.

[0074] Preferably, the prepared aluminum oxide polishing liquid will have polishing particle precipitation. When using it, it needs to be shaken for 1 minute in advance to evenly mix the polishing particles.

[0075] Preferably, in step 2, the mixer is set to have a rotation speed of 50 rpm and a stirring time of 70 min.

[0076] Preferably, the storage container for the aluminum oxide polishing liquid in step six can be a plastic bottle.

[0077] Preferably, the packaging specification of the aluminum oxide polishing liquid in step six is ​​500 ml / bottle.

[0078] The aluminum oxide polishing liquid prepared by Example 2 has an acidic chemical substance added in an amount of 25%, is very safe to use, and is non-irritating to human skin. Compared with the aluminum oxide polishing liquid prepared in Example 1, the dissolution rate of the oxide layer is slightly slower, and the polishing time is longer than that of the aluminum oxide polishing liquid prepared in Example 1.

Claims

1. An aluminum oxide polishing liquid, characterized in that: The composition includes the following ingredients: acidic chemical substances, polishing particles, activators, corrosion inhibitors, and deionized water; the proportions by weight are as follows: Acidic chemicals: 20-30%; Polishing particles: 15-20%; Active agent: 5-10%; Sustained release: 1-5%; Deionized water: balance.

2. The aluminum oxide polishing liquid according to claim 1, characterized in that: The acidic chemical substance is citric acid, diluted hydrofluoric acid, or a combination of the two; the concentration of the diluted hydrofluoric acid is 10%-15%.

3. The aluminum oxide polishing liquid according to claim 1, characterized in that: The polishing particles are silicon dioxide, aluminum oxide, silicon carbide or a combination of the two. The polishing particle level is 0.1-3 μm.

4. The aluminum oxide polishing liquid according to claim 1, characterized in that: The active agent is a nonionic surfactant, a natural fatty acid salt or a combination of the two.

5. The aluminum oxide polishing liquid according to claim 1, characterized in that: The sustained-release agent is benzotriazole.

6. A method for preparing an aluminum oxide polishing liquid, characterized in that The method comprises the following steps: Step 1: Accurately measure the required acidic chemicals and put them into the mixer, add deionized water, heat the above ingredients, set the mixer parameters and stir until the acidic chemicals are completely dissolved in the water. The pH value of the solution should be controlled at 4-6; Step 2: Cool the acidic solution prepared in step 1 to room temperature, take out the weighed polishing particles with a particle size of 0.1-3 μm and evenly put them into the acidic solution on both sides, set the mixer parameters and stir continuously to ensure that the polishing particles are evenly distributed in the solution; Step 3: Add the active agent and sustained-release agent gradually and stir evenly; Step 4: sieving the prepared aluminum oxide polishing liquid to remove insoluble matter in the aluminum oxide polishing liquid; Step 5: Take out a proper amount of sample from the prepared aluminum oxide polishing liquid, and inspect the quality of the aluminum oxide polishing liquid sample to ensure the safety of the aluminum oxide polishing liquid; Step 6: Select a clean container with good stability, package the prepared aluminum oxide polishing liquid, mark the ingredient information, production date, usage instructions, precautions and other relevant information on the outer packaging, and seal the container.

7. The method for preparing the aluminum oxide polishing liquid according to claim 6, characterized in that: In step 1, the solution needs to be heated to 35°C-40°C; in step 1, the mixer setting parameters are a rotation speed of 30-50 rpm; and a stirring time of 20-30 min.

8. The method for preparing the aluminum oxide polishing liquid according to claim 6, characterized in that: The prepared aluminum oxide polishing liquid will have polishing particle precipitation. When using it, it needs to be shaken for 1-2 minutes in advance to evenly mix the polishing particles.

9. The method for preparing the aluminum oxide polishing liquid according to claim 6, characterized in that: In step 2, the mixer is set to have a rotation speed of 50-100 rpm and a stirring time of 5-10 min.

10. The method for preparing the aluminum oxide polishing liquid according to claim 6, characterized in that: In step 6, the storage container for the aluminum oxide polishing liquid can be a plastic bottle or a glass bottle.