Production method of chemical tin immersion liquid capable of improving conductive strength

Abstract

The invention discloses a production method of chemical tin immersion liquid capable of improving electric conduction strength, and relates to the technical field of chemical tin immersion liquid, and the production method comprises the following steps: S1, preparing materials; s2, mixing; s3, stirring; s4, performing secondary mixing; s5, filtering; s6, adding a sulfuric acid solution; s7, producing a chemical tin immersion solution; and S8, testing the conductivity. The production method of the chemical tin immersion liquid capable of improving the conductive strength comprises the following steps: preparing two groups of materials, respectively putting the two groups of materials into a container filled with 550ml of deionized water, heating, uniformly stirring solutions in the container, pouring the solutions in the two groups of containers into a charging basket, pouring 20ml of sulfuric acid solution into a storage bucket, and uniformly stirring the two groups of materials; by adding the sulfuric acid solution, the solution in the storage barrel can contain the chemical tin immersion solution containing sulfuric acid, the electric conductivity of the chemical tin immersion solution containing sulfuric acid is tested, and the test result shows that the sulfuric acid solution can improve the electric conductivity of the chemical tin immersion solution.

Description

Technical Field

[0001] The invention relates to the technical field of chemical tin precipitation liquid, in particular to a production method of chemical tin precipitation liquid capable of improving the conductive strength. Background Art

[0002] Chemical tinning liquid is a solution used to deposit tin metal. It is widely used in the electronics industry, automotive circuit boards, 5G signal boards and other industries. Chemical tinning liquid can improve the corrosion resistance and welding performance of circuit boards. Since the conductivity of chemical tinning liquid is relatively low, it will lead to poor conductivity of the circuit board.

[0003] During the production process of chemical tinning liquid, various raw materials need to be poured together and mixed and stirred. Since the conductivity of tin is not high, the conductive strength of chemical tinning liquid to the circuit board is limited, and it is difficult to improve the conductive strength of chemical tinning liquid to the circuit board. Summary of the invention

[0004] The object of the present invention is to provide a method for producing a chemical tinning solution that can improve the conductive strength, so as to solve the problem of limited conductive strength of the chemical tinning solution on the circuit board mentioned in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for producing a chemical tin precipitation solution capable of improving the conductive strength, comprising the following steps:

[0006] S1: Prepare two sets of materials;

[0007] S2: putting the first group of materials into a container, heating and stirring;

[0008] S3: putting the second group of materials into the container, heating and stirring;

[0009] S4: mixing the two groups of materials;

[0010] S5: Filter impurities;

[0011] S6: adding sulfuric acid solution;

[0012] S7: producing a chemical tin precipitation solution;

[0013] S8: Test the conductivity of the chemical tin solution.

[0014] Preferably, in S1, two groups of materials are prepared, the first group of materials is 30 grams of sodium nitrate, 30 grams of ammonium hydroxide and 3 grams of potassium dichromate, and the second group of materials is 20 milliliters of tin acetate and 60 grams of sodium hydroxide.

[0015] Preferably, in S2, the first group of materials is placed in a container, heated and stirred, sodium nitrate, ammonium hydroxide and potassium dichromate are placed in a container containing 550 ml of deionized water and heated, and when heated to 65°C, the solution inside the container is stirred evenly, and the solution temperature in the container is waited to cool to room temperature.

[0016] Preferably, in S3, the second group of materials is placed in a container, heated and stirred, and tin acetate and sodium hydroxide are placed in another group of containers containing 550 ml of deionized water and heated. When heated to 65° C., the solution inside the container is stirred evenly, and the solution temperature in the container is waited to cool to room temperature.

[0017] Preferably, in S4, the two groups of materials are mixed, the solutions in the two groups of containers are poured into a material barrel together, and 550 ml of deionized water is added and stirred evenly.

[0018] Preferably, in S5, impurities are filtered, a filter is installed on the top of the barrel, and the solution inside the barrel is poured into the storage barrel, so that impurities in the solution inside the barrel can be filtered through the filter.

[0019] Preferably, in S5, by filtering impurities in the solution, the solution can have a higher concentration and be free of impurities.

[0020] Preferably, in S6, sulfuric acid solution is added, and 20 ml of sulfuric acid solution is poured into the storage bucket and stirred evenly.

[0021] Preferably, in S7, a chemical tin precipitation solution is produced, and by adding a sulfuric acid solution, the solution inside the storage barrel can contain a chemical tin precipitation solution containing sulfuric acid.

[0022] Preferably, in S8, the conductivity of the chemical tin precipitation solution is tested, and the conductivity test is performed on the chemical tin precipitation solution containing sulfuric acid. The test results show that the sulfuric acid solution can improve the conductivity of the chemical tin precipitation solution.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the production method of the chemical tin precipitation solution that can improve the conductive strength, prepares two groups of materials, the first group of materials is sodium nitrate, ammonium hydroxide and potassium dichromate, the second group of materials is tin acetate and sodium hydroxide, the two groups of materials are respectively placed in a container containing 550 ml of deionized water, and heated, when heated to 65°C, the solution inside the container is stirred evenly, and the solution temperature in the container is waited to cool to room temperature, the solutions in the two groups of containers are poured into a barrel together, and 550 ml of deionized water is added, and a filter is installed on the top of the barrel, so that impurities in the solution inside the barrel can be filtered through the filter, 20 ml of sulfuric acid solution is poured into a storage barrel, and by adding sulfuric acid solution, the solution inside the storage barrel can contain sulfuric acid chemical tin precipitation solution, and the conductivity of the chemical tin precipitation solution containing sulfuric acid is tested. It can be seen from the test results that sulfuric acid solution can improve the conductive strength of the chemical tin precipitation solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the process 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] See also Figure 1 It can be seen that the present invention provides a technical solution: a method for producing a chemical tin precipitation solution that can improve the conductive strength, comprising the following steps:

[0027] S1: Prepare two sets of materials;

[0028] S2: putting the first group of materials into a container, heating and stirring;

[0029] S3: putting the second group of materials into the container, heating and stirring;

[0030] S4: mixing the two groups of materials;

[0031] S5: Filter impurities;

[0032] S6: adding sulfuric acid solution;

[0033] S7: producing a chemical tin precipitation solution;

[0034] S8: Test the conductivity of the chemical tin solution.

[0035] Example:

[0036] Prepare two groups of materials, the first group of materials is 30 grams of sodium nitrate, 30 grams of ammonium hydroxide and 3 grams of potassium dichromate, the second group of materials is 20 milliliters of tin acetate and 60 grams of sodium hydroxide, put the sodium nitrate, ammonium hydroxide and potassium dichromate into a container filled with 550 milliliters of deionized water, and heat it, when heated to 65°C, stir the solution inside the container evenly, wait for the solution temperature in the container to cool to room temperature, put the tin acetate and sodium hydroxide into another group of containers filled with 550 milliliters of deionized water, and heat it, when heated to 65°C, stir the solution inside the container evenly, and wait for the solution temperature in the container to cool to room temperature;

[0037] Pour the solutions in the two groups of containers into the barrel together, add 550 ml of deionized water, stir evenly, install the filter on the top of the barrel, and pour the solution inside the barrel into the storage barrel, so that the impurities in the solution inside the barrel can be filtered through the filter. By filtering the impurities in the solution, the concentration of the solution can be high and free of impurities. Pour 20 ml of sulfuric acid solution into the storage barrel and stir evenly. By adding sulfuric acid solution, the solution inside the storage barrel can contain a chemical tin precipitation solution of sulfuric acid. The conductivity of the chemical tin precipitation solution containing sulfuric acid is tested. The test results show that sulfuric acid solution can improve the conductivity of the chemical tin precipitation solution.

[0038] The following table shows the conductivity test values ​​of chemical tin solution:

[0039] ConductivityMS / m Chemical tin solution without sulfuric acid 67.8 Chemical tin solution containing sulfuric acid 81.2

[0040] In summary, the production method of the chemical tin precipitation solution that can improve the conductive strength is to prepare two groups of materials, put the two groups of materials into containers containing 550 ml of deionized water respectively, and heat them, stir the solutions inside the containers evenly, pour the solutions in the two groups of containers into a material barrel together, pour 20 ml of sulfuric acid solution into the storage barrel, and by adding sulfuric acid solution, the solution inside the storage barrel can contain a chemical tin precipitation solution of sulfuric acid, and the conductivity of the chemical tin precipitation solution containing sulfuric acid is tested. The test results show that sulfuric acid solution can improve the conductive strength of the chemical tin precipitation solution, so that the conductivity of the circuit board can be improved accordingly. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for producing a chemical tinning solution capable of improving electrical conductivity, characterized in that: The following steps are involved: S1: Prepare two sets of materials; S2: putting the first group of materials into a container, heating and stirring; S3: putting the second group of materials into the container, heating and stirring; S4: mixing the two groups of materials; S5: Filter impurities; S6: adding sulfuric acid solution; S7: producing a chemical tin precipitation solution; S8: Test the conductivity of the chemical tin solution.

2. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S1, two groups of materials are prepared, the first group of materials is 30 grams of sodium nitrate, 30 grams of ammonium hydroxide and 3 grams of potassium dichromate, and the second group of materials is 20 milliliters of tin acetate and 60 grams of sodium hydroxide.

3. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S2, the first group of materials is placed in a container, heated and stirred, sodium nitrate, ammonium hydroxide and potassium dichromate are placed in a container containing 550 ml of deionized water and heated. When heated to 65° C., the solution inside the container is stirred evenly, and the solution temperature in the container is waited to cool to room temperature.

4. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S3, the second group of materials is placed in a container, heated and stirred, and tin acetate and sodium hydroxide are placed in another group of containers containing 550 ml of deionized water and heated. When heated to 65° C., the solution inside the container is stirred evenly, and the solution temperature in the container is waited to cool to room temperature.

5. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S4, the two groups of materials are mixed, the solutions in the two groups of containers are poured into a material barrel, and 550 ml of deionized water is added and stirred evenly.

6. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S5, impurities are filtered, a filter is installed on the top of the barrel, and the solution inside the barrel is poured into the storage barrel, so that the impurities in the solution inside the barrel can be filtered through the filter.

7. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 6, characterized in that: In the step S5, by filtering the impurities in the solution, the solution can have a higher concentration and be free of impurities.

8. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S6, sulfuric acid solution is added, and 20 ml of sulfuric acid solution is poured into the storage bucket and stirred evenly.

9. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In the above S7, a chemical tin precipitation solution is produced, and by adding sulfuric acid solution, the solution inside the storage barrel can contain sulfuric acid chemical tin precipitation solution.

10. The method for producing a chemical tinning solution capable of improving electrical conductivity according to claim 1, characterized in that: In S8, the conductivity of the chemical tin precipitation solution is tested. The conductivity of the chemical tin precipitation solution containing sulfuric acid is tested. The test results show that the sulfuric acid solution can improve the conductivity of the chemical tin precipitation solution.

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