Magnesium oxide for copper-based underfilm plating and method for producing the same

Abstract

This invention discloses a method for preparing magnesium oxide for forming a copper-based protective film, comprising the following steps: a) preparing the following raw materials in parts by weight: 10-20 parts copper-based material, 7-14 parts magnesium powder, 5-10 parts sulfuric acid, and 9-12 parts sodium hydroxide; b) oxidizing the prepared copper-based material to generate copper oxide, and reacting the obtained copper oxide with sulfuric acid to generate copper sulfate; c) reacting the obtained copper sulfate with magnesium to obtain magnesium sulfate; d) reacting the obtained magnesium sulfate with sodium hydroxide to obtain magnesium hydroxide; e) finally heating the obtained magnesium hydroxide to obtain magnesium oxide. This method solves the problems of complex preparation processes, high costs, and unsatisfactory protective effects in existing processes.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of chemical engineering, in particular to a magnesium oxide for forming a protective film on a copper-based material and a preparation method thereof. BACKGROUND

[0002] In the field of engineering applications, the protective film coating technology of copper-based materials has always been a problem of great concern. Due to the high protection requirements of copper-based materials in extreme environments such as high temperature and high humidity, a protective film material with excellent protection performance is needed. However, existing protective film materials often cannot meet these protection requirements and lack targeted protection for copper-based materials. For example, some protective film materials are prone to decomposition at high temperatures or have adverse reactions with copper-based materials, resulting in ineffective protection. In addition, the preparation methods of some protective film materials are too complex, requiring the use of a large amount of organic solvent or high-temperature sintering process, which not only increases the preparation cost but also may cause environmental pollution. Therefore, it is of great significance to develop a protective film material suitable for copper-based materials and a preparation method thereof. SUMMARY

[0003] The purpose of the present application is to provide a magnesium oxide for forming a protective film on a copper-based material and a preparation method thereof, which solves the problems of complex preparation process, high cost, and unsatisfactory protection effect.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] A magnesium oxide for forming a protective film on a copper-based material and a preparation method thereof, characterized by the following steps: a. preparing raw materials with the following mass fractions: copper-based material 10-20 parts, magnesium powder 7-14 parts, sulfuric acid 5-10 parts, and sodium hydroxide 9-12 parts; b. oxidizing the prepared copper-based material to form copper oxide, and reacting the obtained copper oxide with sulfuric acid to form copper sulfate; c. reacting the obtained copper sulfate with magnesium to obtain magnesium sulfate; d. reacting the obtained magnesium sulfate with sodium hydroxide to obtain magnesium hydroxide; e. finally heating the obtained magnesium hydroxide to obtain magnesium oxide.

[0006] The magnesium oxide for forming a protective film on a copper-based material and the preparation method thereof have the advantages of simple preparation process, low cost, and good protection performance, and can meet the protection requirements of copper-based materials in high-temperature, high-humidity, and other environments, having a good application prospect.

[0007] As a further preferred embodiment of the present application, the mass fractions of the raw materials in step a are as follows: copper-based material 15 parts, magnesium powder 12 parts, sulfuric acid 8 parts, and sodium hydroxide 10 parts.

[0008] As a further preferred embodiment of the present application, the copper-based material in step a is copper powder, copper oxide, and / or copper salt.

[0009] As a further preferred embodiment of the present application, the concentration of sulfuric acid in step a is 98%.

[0010] Concentrated sulfuric acid has high concentration and high purity, which can provide sufficient acidic environment and ensure the stability of the reaction, reducing the occurrence of side reactions.

[0011] As a further preferred embodiment of the present application, the temperature during heating in step e is controlled between 400-600°C, and the calcination time is controlled between 1-3 hours.

[0012] During the calcination of magnesium oxide, if the heating temperature is lower than 400°C, the following problems may exist:

[0013] (1) Incomplete decomposition: At lower temperatures, magnesium hydroxide may not be completely decomposed, resulting in a decrease in the amount of magnesium oxide produced;

[0014] (2) Poor crystal development: Too low heating temperature may lead to poor crystal development, affecting the crystalline structure and performance of magnesium oxide;

[0015] (3) Increased water absorption: Heating magnesium hydroxide at lower temperatures may increase its water absorption, affecting the quality and performance of the product.

[0016] Compared with the prior art, the present application can achieve at least one of the following beneficial effects:

[0017] 1. The preparation process is simple, low in cost, and has good protective performance, etc., which can meet the protection requirements of copper-based materials in high temperature, high humidity, etc. environment, and has good application prospect.

[0018] 2. Precise reaction control: By using sulfuric acid of a specific concentration, the reaction progress can be precisely controlled to obtain high-quality magnesium oxide.

[0019] 3. The method of the present application does not use organic solvents or high-temperature sintering processes that may pollute the environment, so it is environmentally friendly.

[0020] 4. By precisely controlling the reaction progress and heating temperature, a magnesium oxide protective film with excellent protective performance can be obtained, which can meet the protection requirements of copper-based materials in high temperature, high humidity, etc. environment.

[0021] 5. Easy to operate: The preparation method of the present application is simple and easy to implement, suitable for large-scale production. DETAILED DESCRIPTION

[0022] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are part of, rather than all, the embodiments of the present application. The components of the embodiments of the present application described and shown herein can be arranged and designed in various different configurations.

[0023] In the description of the present application, it should also be noted that, unless explicitly specified and limited, the terms "arrange", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. Embodiment 1:

[0025] A kind of copper-based magnesium oxide for forming protective film and its preparation method, comprising the following steps: a, prepare the following mass fraction of raw materials: copper-based material 15 parts, magnesium powder 12 parts, sulfuric acid 8 parts and sodium hydroxide 10 parts;B, the copper oxide is generated after the prepared copper-based material is oxidized, and the obtained copper oxide is reacted with sulfuric acid to generate copper sulfate;C, the obtained copper sulfate is reacted with magnesium to obtain magnesium sulfate;D, the obtained magnesium sulfate is reacted with sodium hydroxide to obtain magnesium hydroxide;E, finally, the obtained magnesium hydroxide is heated to obtain magnesium oxide;

[0026] The copper-based material in step a is copper powder, copper oxide and / or copper salt;

[0027] The concentration of sulfuric acid in step a is 98%.

[0028] Concentrated sulfuric acid has high concentration and high purity, can provide sufficient acidic environment, can ensure the stability of the reaction, and reduce the occurrence of side reactions;

[0029] The temperature is controlled between 450 DEG C during heating in step e, and the calcination time is controlled for 2 hours.

[0030] The copper-based magnesium oxide for forming protective film and its preparation method of the present application have the advantages of simple preparation process, low cost, good protection performance, etc., can meet the protection requirements of copper-based materials in high temperature, high humidity and other environments, and have good application prospect. Embodiment 2:

[0032] A kind of copper-based magnesium oxide for forming protective film and its preparation method, including the following steps: a, prepare the following mass fraction of raw materials: copper-based material 10 parts, magnesium powder 7 parts, sulfuric acid 5 parts and sodium hydroxide 12 parts;B, the copper oxide is formed after the prepared copper-based material is oxidized, and the obtained copper oxide is reacted with sulfuric acid to form copper sulfate;C, the obtained copper sulfate is reacted with magnesium to obtain magnesium sulfate;D, the obtained magnesium sulfate is reacted with sodium hydroxide to obtain magnesium hydroxide;E, finally, the obtained magnesium hydroxide is heated to obtain magnesium oxide;

[0033] The copper-based material in step a is copper powder, copper oxide and / or copper salt;

[0034] The concentration of sulfuric acid in step a is 98%.

[0035] Concentrated sulfuric acid has high concentration and high purity, can provide sufficient acidic environment, can ensure the stability of reaction, reduce the occurrence of side reaction;

[0036] The temperature is controlled at 400 DEG C when heating in step e, and the calcination time is controlled at 3 hours.

[0037] The copper-based magnesium oxide for forming protective film and its preparation method have the advantages of simple preparation process, low cost, good protection performance, etc., can meet the protection requirements of copper-based materials in high temperature, high humidity and other environments, and have good application prospect. Specific embodiment 3:

[0039] A kind of copper-based magnesium oxide for forming protective film and its preparation method, including the following steps: a, prepare the following mass fraction of raw materials: copper-based material 20 parts, magnesium powder 14 parts, sulfuric acid 10 parts and sodium hydroxide 9 parts;B, the copper oxide is formed after the prepared copper-based material is oxidized, and the obtained copper oxide is reacted with sulfuric acid to form copper sulfate;C, the obtained copper sulfate is reacted with magnesium to obtain magnesium sulfate;D, the obtained magnesium sulfate is reacted with sodium hydroxide to obtain magnesium hydroxide;E, finally, the obtained magnesium hydroxide is heated to obtain magnesium oxide;

[0040] The copper-based material in step a is copper powder, copper oxide and / or copper salt;

[0041] The concentration of sulfuric acid in step a is 98%.

[0042] Concentrated sulfuric acid has high concentration and high purity, can provide sufficient acidic environment, can ensure the stability of reaction, reduce the occurrence of side reaction;

[0043] The temperature is controlled at 600 DEG C when heating in step e, and the calcination time is controlled at 1 hour.

[0044] The magnesium oxide for copper-based forming protective film and the preparation method thereof have the advantages of simple preparation process, low cost, good protection performance and the like, can meet the protection requirements of copper-based materials under high temperature, high humidity and the like, and have good application prospect.

[0045] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for producing magnesium oxide for forming a copper-based protective film, characterized by: The method comprises the following steps: a, preparing raw materials with the following mass fractions: copper-based material 10-20 parts, magnesium powder 7-14 parts, sulfuric acid 5-10 parts and sodium hydroxide 9-12 parts; b, oxidizing the prepared copper-based material to generate copper oxide, and reacting the obtained copper oxide with sulfuric acid to generate copper sulfate; c, reacting the obtained copper sulfate with magnesium to obtain magnesium sulfate; d, reacting the obtained magnesium sulfate with sodium hydroxide to obtain magnesium hydroxide; e, finally, heating the obtained magnesium hydroxide to obtain magnesium oxide.

2. The method for producing magnesium oxide for copper-based generative protective films according to claim 1, characterized in that: In the step a, the mass fractions of the raw materials are as follows: copper-based material 15 parts, magnesium powder 12 parts, sulfuric acid 8 parts and sodium hydroxide 10 parts.

3. The method of producing magnesium oxide for copper-based generative protective films according to claim 1, characterized in that: The copper-based material in the step a is copper powder.

4. The method of producing magnesium oxide for copper-based generative protective films according to claim 1, characterized in that: The concentration of the sulfuric acid in the step a is 98%.

5. The method of producing magnesium oxide for copper-based generative protective films according to claim 1, characterized in that: In the step e, the temperature during heating is controlled between 400-600 DEG C, and the calcination time is controlled between 1-3 hours.