A plating bath for ion liquid electroplating aluminum on a film

Abstract

The application discloses a kind of electroplating tank for ion liquid electroplating aluminum on film, belong to electroplating technical field, including tank body;Ultrasonic generator is arranged on the inner side wall of tank body, for promoting electroplating solution mass transfer;Heating mechanism is arranged in tank body, for heating electroplating solution;Hanger assembly is arranged in tank body, to facilitate the clamping and replacement of sample.The application adopts polytetrafluoroethylene integrated molding tank body and double-sided titanium alloy ultrasonic vibration plate structure, realizes long-acting tolerance to special corrosive ion liquid and uniform strengthening of flow field in tank.

Description

Technical Field

[0001] This invention belongs to the field of electroplating technology, specifically relating to an electroplating tank for electroplating aluminum with ionic liquids on thin films. Background Technology

[0002] In the field of electroplating technology, electroplating tanks are the core equipment for material surface modification, coating preparation, and process research. Currently, widely used traditional electroplating tanks have a series of limitations in terms of structure, function, and control, making it difficult to meet the stringent requirements of ionic liquid systems for thin film substrate electroplating processes, which seriously restricts the coating quality and R&D efficiency of related processes.

[0003] Electroplating tanks are typically welded from sheet metal. While this manufacturing process has lower initial costs, the welds are highly susceptible to stress corrosion cracking under prolonged exposure to the thermal cycling and corrosion of the electroless plating solution, significantly increasing the risk of tank leakage. Secondly, traditional equipment falls short in controlling key process parameters affecting electroplating quality. On one hand, its heat conduction and temperature control capabilities are poor; traditional equipment often relies on external heating plates, making it difficult to achieve uniform heat conduction and precise temperature control. On the other hand, the mass transfer uniformity of the electroplating solution is poor; traditional equipment often relies on simple air stirring or inefficient mechanical agitation, making it difficult to create stable and uniform fluid dynamics conditions on complex workpiece surfaces. This results in significant concentration polarization, especially on micropores or uneven surfaces, making it difficult to ensure consistent coating thickness distribution. Most critically, the common fixtures used in electroplating tanks lack versatility, the clamping process is cumbersome, and clamping points are easily obstructed, causing a "shielding effect" or unstable contact resistance. This directly affects the uniformity of current distribution, becoming a key human factor contributing to unstable coating quality.

[0004] In summary, the shortcomings of existing laboratory electroplating tanks in terms of structural reliability, functional flexibility, and process control precision have collectively led to problems such as large fluctuations in experimental data, poor stability of coating quality, and low experimental repeatability. This has become a bottleneck restricting the rapid development of new processes.

[0005] Therefore, in order to achieve uniform deposition of aluminum coatings by ionic liquid electroplating on thin films, it is urgent to design an electroplating tank for ionic liquid electroplating on thin films that has optimized structure depth and integrates high reliability, modular expansion capability and user-friendly operation. Summary of the Invention

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An electroplating bath for electroplating aluminum onto a thin film using ionic liquids, comprising: Tank body; An ultrasonic generator is disposed on the inner wall of the tank to promote mass transfer of the electroplating solution. A heating mechanism, which is installed inside the tank, is used to heat the electroplating solution; The mounting bracket assembly is set inside the tank to facilitate sample clamping and replacement.

[0007] Furthermore, the outer side of the groove is provided with a sheet metal reinforcement structure to enhance overall stability.

[0008] Furthermore, the tank body is integrally formed from a single piece of polytetrafluoroethylene material.

[0009] Furthermore, the ultrasonic generator includes two sets of titanium alloy vibrating plates, which are respectively fixed to the inner sidewalls of the tank on both sides by a wall-mounting structure, and promote mass transfer of the electroplating solution through ultrasonic vibration.

[0010] Furthermore, the heating mechanism includes a heating element and a thermometer, which are located at opposite ends of the mounting assembly and are used to heat the electroplating solution and measure the system temperature.

[0011] Furthermore, the surface of the heating element is coated with a polytetrafluoroethylene coating.

[0012] Furthermore, the mounting assembly includes an anode mounting bracket and a cathode mounting bracket for clamping and replacing samples.

[0013] Furthermore, both the anode hanger and the cathode hanger are made of polytetrafluoroethylene.

[0014] Beneficial effects: This invention presents an electroplating tank for ionic liquid electroplating of aluminum on thin films. By employing a one-piece PTFE (polytetrafluoroethylene) tank body and a double-sided titanium alloy ultrasonic vibrating plate structure, it achieves long-term resistance to highly corrosive ionic liquids and uniform enhancement of the flow field within the tank. Combined with a PTFE-coated heating element and thermometer, it ensures precise and stable process temperature. Furthermore, a dedicated quick-clamping module for thin films enables flat fixation and reliable contact of flexible substrates. This device not only boasts significant advantages in corrosion resistance, coating uniformity, temperature control accuracy, and ease of operation, but also effectively supports the controllable preparation and process development of high-quality aluminum coatings on thin film surfaces under ionic liquid systems. Simultaneously, it is compatible with various flexible substrates such as PP, PET, and PI, and is suitable for samples with thicknesses ranging from 10-20 μm, meeting diverse laboratory research needs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the electroplating tank for electroplating aluminum with ionic liquids on thin films according to the present invention; Figure 2 This is a cross-sectional view of the internal structure of the electroplating tank for electroplating aluminum with ionic liquids on thin films according to the present invention. The numbers in the diagram are as follows: 1. Ultrasonic generator, 2. Tank, 3. Anode hanger, 4. Heating element, 5. Thermometer, 6. Cathode hanger, 7. Hanger assembly. Detailed Implementation

[0016] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0018] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0019] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0020] Example 1

[0021] refer to Figure 1 - Figure 2 An electroplating bath for electroplating aluminum with ionic liquids on a thin film, comprising: Tank body; An ultrasonic generator 1 is installed on the inner wall of the tank 2 to promote mass transfer of the electroplating solution. A heating mechanism is installed inside the tank 2 to heat the electroplating solution; The mounting assembly 7 is set inside the tank 2 to facilitate sample clamping and replacement.

[0022] Preferably, the outer side of the tank 2 is provided with a sheet metal reinforcement structure to enhance overall stability.

[0023] Preferably, the tank body 2 is made of a single piece of polytetrafluoroethylene material.

[0024] Preferably, the ultrasonic generator 1 includes two sets of titanium alloy vibrating plates. The two sets of titanium alloy vibrating plates are fixed to the inner sidewalls of the tank 2 on both sides by a wall-mounting structure, so as to promote mass transfer of the electroplating solution through ultrasonic vibration. The installation is stable and easy to disassemble and maintain later.

[0025] Preferably, the heating mechanism includes a heating element 4 and a thermometer 5, which are located at both ends of the mounting assembly 7 and are used to heat the electroplating solution and measure the system temperature.

[0026] Preferably, the surface of the heating element 4 is coated with a polytetrafluoroethylene coating, which has good chemical corrosion resistance and anti-adhesion properties.

[0027] Preferably, the mounting assembly 7 includes an anode mounting bracket 3 and a cathode mounting bracket 6 for clamping and replacing samples.

[0028] Preferably, both the anode hanger 3 and the cathode hanger 6 are made of polytetrafluoroethylene.

[0029] In this embodiment, the anode hanger 3 and the cathode hanger 6 are designed as modular quick-release structures, which facilitates sample clamping and replacement.

[0030] Working Principle: Before operation, the user injects the prepared electroplating solution into the tank and installs the prepared base film sample on the cathode holder 6. After connecting the power supply, the user sets the required operating temperature through the heating system and starts the heating system. After the temperature stabilizes, the ultrasonic generator 1 and the main power supply are started sequentially to begin the electrodeposition process. The ultrasonic waves continuously act on the entire electroplating area to ensure uniform ion transport; the heating system maintains a constant process temperature. After electroplating is completed, the power supply and ultrasonic waves are turned off sequentially, and the cathode assembly can be quickly removed to retrieve the plated sample.

[0031] The entire device is compact in design, has a clear operating procedure, and is easy to maintain, making it especially suitable for the preparation of small-batch, multi-batch, high-quality electroplating samples during the research and development stage.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An electroplating tank for electroplating aluminum with ionic liquid on a thin film, characterized in that, include: Tank body; An ultrasonic generator is disposed on the inner wall of the tank to promote mass transfer of the electroplating solution. A heating mechanism, which is installed inside the tank, is used to heat the electroplating solution; The mounting bracket assembly is set inside the tank to facilitate sample clamping and replacement.

2. The electroplating tank for ionic liquid electroplating of aluminum on a thin film according to claim 1, characterized in that, The outer side of the tank is provided with a sheet metal reinforcement structure to enhance overall stability.

3. The electroplating tank for electroplating aluminum with ionic liquid on a thin film according to claim 1, characterized in that, The tank is made of a single piece of polytetrafluoroethylene material.

4. The electroplating tank for electroplating aluminum with ionic liquid on a thin film according to claim 1, characterized in that, The ultrasonic generator includes two sets of titanium alloy vibrating plates, which are fixed to the inner sidewalls of the tank on both sides by a wall-mounting structure. The ultrasonic vibration promotes mass transfer of the electroplating solution.

5. The electroplating tank for electroplating aluminum with ionic liquid on a thin film according to claim 1, characterized in that, The heating mechanism includes a heating element and a thermometer, which are located at opposite ends of the mounting assembly and are used to heat the electroplating solution and measure the system temperature.

6. The electroplating tank for electroplating aluminum with ionic liquid on a thin film according to claim 5, characterized in that, The surface of the heating element is coated with polytetrafluoroethylene.

7. The electroplating tank for electroplating aluminum with ionic liquid on a thin film according to claim 1, characterized in that, The mounting assembly includes an anode mounting bracket and a cathode mounting bracket, used for clamping and replacing samples.

8. The electroplating tank for electroplating aluminum with ionic liquid on a thin film according to claim 7, characterized in that, Both the anode and cathode fixtures are made of polytetrafluoroethylene (PTFE).

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