阅读说明：本技术 一种塑料喇叭阵天线的加工方法及系统 (Processing method and system of plastic horn array antenna ) 是由 姚敏立 贾维敏 张峰干 伍宗伟 沈晓卫 金伟 侯榜欢 于 2019-09-23 设计创作，主要内容包括：本发明公开一种塑料喇叭阵天线的加工方法及系统。本发明提供的塑料喇叭阵天线的加工方法及系统,通过塑料注塑成型获得各平板天线注塑件,然后对平板天线注塑件依次进行除油处理、粗化处理、敏化处理、活化处理、还原处理/解胶处理、化学镀镍处理、电镀铜处理、闪镀镍处理和烘干处理后,将各平板天线注塑件进行组装,即可获得喇叭阵天线。可见,本发明利用工程塑料注塑,同时利用电镀的方法实现塑料金属化,能够降低加工成本,缩短加工周期,为实现塑料喇叭阵天线的高效率大规模生产提供了可能。(The invention discloses a method and a system for processing a plastic horn array antenna. According to the processing method and system of the plastic horn array antenna, provided by the invention, each flat antenna injection molding piece is obtained through plastic injection molding, then the flat antenna injection molding pieces are sequentially subjected to oil removing treatment, coarsening treatment, sensitizing treatment, activating treatment, reduction treatment/dispergation treatment, chemical nickel plating treatment, electro-coppering treatment, flash nickel plating treatment and drying treatment, and then each flat antenna injection molding piece is assembled, so that the horn array antenna can be obtained. Therefore, the invention realizes plastic metallization by using engineering plastic injection and an electroplating method, can reduce the processing cost and shorten the processing period, and provides possibility for realizing high-efficiency large-scale production of the plastic horn array antenna.)

1. A processing method of a plastic horn array antenna is characterized by comprising the following steps:

injection molding the engineering plastic by adopting an injection molding method to obtain injection molded parts of each flat antenna;

carrying out oil removal treatment on the surface of each flat antenna injection molding piece;

roughening the surface of each of the planar antenna injection molded parts after oil removal treatment;

carrying out sensitization treatment and activation treatment on the surface of each roughened panel antenna injection molding;

carrying out reduction treatment or dispergation treatment on each of the activated flat antenna injection molded parts;

carrying out chemical nickel plating treatment on the surface of each flat antenna injection molding after reduction treatment or dispergation treatment;

performing electro-coppering treatment on the surface of each panel antenna injection molding part subjected to the chemical nickel plating treatment;

carrying out flash nickel plating treatment on the surface of each panel antenna injection molding after the electro-coppering treatment;

and drying and assembling the flash-plated nickel-treated panel antenna injection molded parts to obtain the horn array antenna.

2. The processing method according to claim 1, wherein the injection molding of the engineering plastic by the injection molding method specifically comprises:

and selecting engineering plastics with corresponding thermal expansion coefficients according to the frequency bands of the antenna for injection molding.

3. The process according to claim 1, characterized in that the degreasing treatment is carried out at a temperature ranging from 50 ℃ to 70 ℃.

4. The processing method according to claim 1, wherein the roughening treatment is a chemical roughening treatment.

5. The processing method according to claim 4, wherein before the sensitizing treatment and the activating treatment are sequentially performed on the surface of each of the roughened planar antenna injection-molded parts, the processing method further comprises:

and performing neutralization treatment, reduction treatment or pickling treatment on the surface of each roughened plate antenna injection molding.

6. The process of claim 1, wherein the sensitizing compound is a stannous or trivalent titanium salt solution.

7. The processing method according to claim 1, wherein the sensitizing and activating treatment of the surface of each of the roughened planar antenna injection-molded parts specifically comprises:

and performing colloid palladium activation treatment on the surface of each roughened panel antenna injection molding piece.

8. The processing method according to claim 1, wherein the temperature of the electroless nickel plating treatment is lower than the heat distortion temperature of the engineering plastic, and the difference between the temperature of the electroless nickel plating treatment and the heat distortion temperature of the engineering plastic is greater than or equal to 20 ℃.

9. The process of claim 1, wherein the thickness of the copper plating layer of the electrolytic copper plating process is 2 times the skin depth of the highest frequency of the antenna operating band.

10. A system for processing a plastic horn array antenna, the system comprising:

the injection molding module is used for injection molding the engineering plastics by adopting an injection molding method to obtain injection molding pieces of the panel antennas;

the oil removal module is used for carrying out oil removal treatment on the surface of each panel antenna injection molding piece;

the coarsening module is used for coarsening the surface of each flat antenna injection molding after the oil removal treatment;

the sensitization and activation module is used for carrying out sensitization and activation treatment on the surfaces of the roughened injection-molded parts of the panel antennas;

the reduction or dispergation module is used for carrying out reduction treatment or dispergation treatment on each of the planar antenna injection molded parts after the activation treatment;

the chemical nickel plating module is used for performing chemical nickel plating treatment on the surfaces of the flat antenna injection molding parts subjected to reduction treatment or dispergation treatment;

the copper plating module is used for carrying out electro-coppering treatment on the surface of each panel antenna injection molding piece after the chemical nickel plating treatment;

the flash nickel plating module is used for carrying out flash nickel plating treatment on the surface of each panel antenna injection molding part subjected to the electro-coppering treatment;

and the drying and assembling module is used for drying and assembling each injection molded part of the panel antenna after the nickel flash plating treatment to obtain the horn array antenna.

Technical Field

The invention relates to the technical field of mobile satellite communication, in particular to a method and a system for processing a plastic horn array antenna.

Background

With the development of economic globalization and informatization, people are urgently required to transmit or receive broadband and large-capacity multimedia information such as voice, data, images, videos and the like in real time at any place and any time in a journey so as to master the time bureau of the change of the moment more quickly and accurately. Satellite communication is the only communication system that can simultaneously provide different service requirements in different environments. Due to the relatively low bandwidth allocated to satellite mobile services by the ITU, it is difficult to meet the requirements of broadband communication services. Satellite fixed service based "mobile communication" communication systems offer the possibility of solving this problem. The communication-in-motion satellite communication system is a system which is provided with a mobile carrier of a satellite antenna, such as an automobile, a train, an airplane, a ship and the like, can establish a communication link with a stationary satellite, namely a synchronous orbit satellite, and can keep the communication link smooth in the process of quick motion of the carrier so as to realize real-time communication. The distance between the stationary satellite and the ground is 36000 kilometers, so a high-gain directional antenna is required to realize the broadband multimedia communication between the mobile carrier and the stationary satellite.

The horn array antenna has high efficiency and large length-width ratio, and can realize low profile, so the flat antenna is the preferred antenna of the satellite communication-in-motion antenna. However, for a long time, the horn array panel antenna is mainly processed by numerical control, and has the problems of high processing cost and long processing period.

Disclosure of Invention

The invention aims to provide a method and a system for processing a plastic horn array antenna, which can reduce the processing cost and shorten the processing period.

In order to achieve the purpose, the invention provides the following scheme:

a processing method of a plastic horn array antenna comprises the following steps:

injection molding the engineering plastic by adopting an injection molding method to obtain injection molded parts of each flat antenna;

carrying out oil removal treatment on the surface of each flat antenna injection molding piece;

roughening the surface of each of the planar antenna injection molded parts after oil removal treatment;

carrying out sensitization treatment and activation treatment on the surface of each roughened panel antenna injection molding;

carrying out reduction treatment or dispergation treatment on each of the activated flat antenna injection molded parts;

carrying out chemical nickel plating treatment on the surface of each flat antenna injection molding after reduction treatment or dispergation treatment;

performing electro-coppering treatment on the surface of each panel antenna injection molding part subjected to the chemical nickel plating treatment;

carrying out flash nickel plating treatment on the surface of each panel antenna injection molding after the electro-coppering treatment;

and drying and assembling the flash-plated nickel-treated panel antenna injection molded parts to obtain the horn array antenna.

Optionally, the injection molding of the engineering plastic by using the injection molding method specifically includes:

and selecting engineering plastics with corresponding thermal expansion coefficients according to the frequency bands of the antenna for injection molding.

Optionally, the temperature range of the oil removing treatment is 50-70 ℃.

Optionally, the roughening treatment is a chemical roughening treatment.

Optionally, before the surface of each of the roughened surface-treated planar antenna injection-molded parts is sequentially subjected to sensitization treatment and activation treatment, the method further includes:

and performing neutralization treatment, reduction treatment or pickling treatment on the surface of each roughened plate antenna injection molding.

Optionally, the sensitizer for sensitization treatment is a stannous salt solution or a trivalent titanium salt solution.

Optionally, the surface of each of the roughened injection-molded flat-panel antennas is sensitized and activated, and the method specifically includes:

and performing colloid palladium activation treatment on the surface of each roughened panel antenna injection molding piece.

Optionally, the temperature of the electroless nickel plating treatment is lower than the thermal deformation temperature of the engineering plastic, and the difference between the temperature of the electroless nickel plating treatment and the thermal deformation temperature of the engineering plastic is greater than or equal to 20 ℃.

Optionally, the thickness of the copper plating processed by the electro-coppering is 2 times of the skin depth of the highest frequency of the working frequency band of the antenna.

A system for processing a plastic horn array antenna, the system comprising:

the injection molding module is used for injection molding the engineering plastics by adopting an injection molding method to obtain injection molding pieces of the panel antennas;

the oil removal module is used for carrying out oil removal treatment on the surface of each panel antenna injection molding piece;

the coarsening module is used for coarsening the surface of each flat antenna injection molding after the oil removal treatment;

the sensitization and activation module is used for carrying out sensitization and activation treatment on the surfaces of the roughened injection-molded parts of the panel antennas;

the reduction or dispergation module is used for carrying out reduction treatment or dispergation treatment on each of the planar antenna injection molded parts after the activation treatment;

the chemical nickel plating module is used for performing chemical nickel plating treatment on the surfaces of the flat antenna injection molding parts subjected to reduction treatment or dispergation treatment;

the copper plating module is used for carrying out electro-coppering treatment on the surface of each panel antenna injection molding piece after the chemical nickel plating treatment;

the flash nickel plating module is used for carrying out flash nickel plating treatment on the surface of each panel antenna injection molding part subjected to the electro-coppering treatment;

and the drying and assembling module is used for drying and assembling each injection molded part of the panel antenna after the nickel flash plating treatment to obtain the horn array antenna.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

the invention provides a processing method and a system of a plastic horn array antenna, which are characterized in that each flat antenna injection molding piece is obtained through plastic injection molding, then the flat antenna injection molding pieces are sequentially subjected to oil removing treatment, coarsening treatment, sensitizing treatment, activating treatment, reduction treatment/dispergation treatment, chemical nickel plating treatment, electro-coppering treatment, flash nickel plating treatment and drying treatment, and then all the flat antenna injection molding pieces are assembled to obtain the horn array antenna. Therefore, the invention realizes plastic metallization by using engineering plastic injection and an electroplating method, can reduce the processing cost and shorten the processing period, and provides possibility for realizing high-efficiency large-scale production of the plastic horn array antenna.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

Fig. 1 is a flowchart of a method for processing a plastic horn array antenna according to an embodiment of the present invention;

fig. 2 is a structural diagram of a radiation layer of an antenna horn according to an embodiment of the present invention;

fig. 3 is a block diagram of a system for processing a plastic horn array antenna according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a method and a system for processing a plastic horn array antenna, which can reduce the processing cost and shorten the processing period.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Fig. 1 is a flowchart of a method for processing a plastic horn array antenna according to an embodiment of the present invention. As shown in fig. 1, the processing method includes:

step 101: and injection molding the engineering plastic by adopting an injection molding method to obtain the injection molding parts of the panel antennas.

Engineering plastics which can be selected as the material for injection molding of the panel antenna include engineering plastics such as ABS (Acrylonitrile Butadiene styrene), polycarbonate and Acrylonitrile Butadiene styrene copolymer, and mixtures of PC/ABS and PEI (Polyetherimide). In practical application, engineering plastics with corresponding thermal expansion coefficients can be selected according to the frequency band of the antenna for injection molding. The higher the frequency band, the lower the coefficient of thermal expansion of the plastic selected. And after the injection molding is finished, checking whether the injection molded part has defects. And entering the next flow without defects.

Step 102: and carrying out oil removal treatment on the surface of each flat antenna injection molding.

The purpose of degreasing is to remove residual release agent and oil stains on the surface of the product during molding, storage and transportation. The oil removal is related to the electroplating quality, and if the oil removal is not thorough, plating leakage can be generated, and the electrical performance is influenced. Therefore, in the embodiment, the deoiling treatment is performed on the deoiling liquid of the steel part selected for the injection molding part, the mass concentration of the chemical deoiling powder in the deoiling liquid is 50g/l, the deoiling time is 5min, and the deoiling treatment temperature range is 50-70 ℃. The temperature of the degreasing solution must not exceed the viscous flow temperature of the plastic, i.e. the plastic must not be deformed.

Step 103: and roughening the surface of each of the planar antenna injection molded parts after oil removal treatment. The roughening treatment in this embodiment is a chemical roughening treatment. Coarsening technological parameters: the mass concentration range of chromic anhydride in the coarsening liquid is 350-450 g/l, the mass concentration range of sulfuric acid is 350-400 g/l, the temperature range of coarsening treatment is 60-70 ℃, and the time range of coarsening treatment is 8-15 min.

Coarsening can improve the hydrophilicity of the surface of the part and form proper roughness to ensure that the plating layer has good bonding force, and coarsening treatment is a key process for determining the bonding force of the plating layer.

Further, in this embodiment, after the chemical roughening treatment, a neutralization treatment, a reduction treatment, or an acid dipping treatment is performed to clean the plating solution remaining on the surface of the part, so as to avoid contaminating the dipping solution.

Step 104: and carrying out sensitization treatment and activation treatment on the surface of each roughened plate antenna injection molding.

Sensitization is the adsorption of a layer of readily oxidizable material to the non-metallic surface so that it is oxidized during the activation process to form a "catalytic film" on the surface of the article. In practical application, the sensitizer can be selected from divalent tin salt solution and trivalent titanium salt solution. In this example, an acidic solution of tin dichloride or a basic solution of stannous complex was used for sensitization.

The activation treatment is a process of re-treating the surface of the sensitized workpiece with a solution of a compound containing a catalytically active metal such as silver, palladium, platinum, gold, etc., to produce a catalytic metal layer on the non-metal surface as a catalyst for the redox reaction in the electroless plating. The essence of the activation process is that when the sensitized workpiece surface is contacted with a solution containing noble metal ions, the noble metal ions are quickly reduced into metal particles by the divalent tin ions, so that the metal particles are tightly attached to the workpiece surface.

In the embodiment, the sensitization and the activation processes are combined and completed at one time by adopting the colloid palladium activation treatment, two processes of sensitization and ionic activation are replaced, and the binding force of the plating layer is effectively improved.

Step 105: and carrying out reduction treatment or dispergation treatment on each of the activated flat antenna injection molded parts.

The product cleaned by the activating treatment and clear water can not directly enter a chemical plating process, and needs to be subjected to reduction treatment or dispergation treatment. The product treated by the ionic activating solution is subjected to reduction treatment, namely, the product is soaked in a solution containing a chemical plating reducing agent with a certain concentration for a short time and then is directly placed into a chemical plating tank for chemical plating without water cleaning. The purpose of the reduction treatment is to reduce and remove the activating solution remained on the surface of the product, so as to avoid the activating solution from entering into the chemical plating solution to cause the decomposition of the plating solution; meanwhile, the catalytic activity of the surface can be improved.

Step 106: and carrying out chemical nickel plating treatment on the surface of each flat antenna injection molding after the reduction treatment or the dispergation treatment.

Metallizing plastic products is the last step before electroplating. The heat resistance of plastics is generally poor, so the temperature of the chemical nickel plating treatment is lower than the thermal deformation temperature of the engineering plastics, and in practical application, the difference between the temperature of the chemical nickel plating treatment and the thermal deformation temperature of the engineering plastics is greater than or equal to 20 ℃. In this example, a normal temperature chemical nickel plating method was selected for the treatment.

Step 107: and carrying out electro-coppering treatment on the surface of each panel antenna injection molding after the chemical nickel plating treatment.

After the chemical nickel plating is finished, the key step of the metallization of the plastic antenna is carried out. The embodiment adopts the sulfate copper plating electroplating process, has simple components, stable solution and no harmful gas, can obtain a full-bright coating by adopting a proper brightener, and has good leveling performance. The thickness of the copper plating is related to the working frequency band of the antenna, and in this embodiment, the thickness of the copper plating of the electro-coppering process is 2 times the skin depth of the highest frequency of the working frequency band of the antenna.

Step 108: and carrying out flash nickel plating treatment on the surface of each panel antenna injection molding after the electro-coppering treatment.

Because copper is easy to oxidize in the air, after the copper electroplating process is finished, the nickel flash plating process is carried out on the plated part so as to protect the copper electroplating layer and ensure the performance of the antenna in various environments.

Step 109: and drying and assembling the flash-plated nickel-treated panel antenna injection molded parts to obtain the horn array antenna. Fig. 2 is a structural view of the radiation layer of the antenna horn after the assembly is completed, in which part (a) of fig. 2 is a top view of the radiation layer of the horn, part (b) of fig. 2 is a side view of the radiation layer of the horn, and part (c) of fig. 2 is a bottom view of the radiation layer of the horn.

Fig. 3 is a block diagram of a system for processing a plastic horn array antenna according to an embodiment of the present invention. As shown in fig. 3, the processing system includes:

the injection molding module 201 is used for injection molding engineering plastics by adopting an injection molding method to obtain injection molded parts of the panel antennas;

the oil removing module 202 is used for performing oil removing treatment on the surface of each panel antenna injection molding piece;

the coarsening module 203 is used for coarsening the surface of each of the planar antenna injection molding pieces after the oil removal treatment;

the sensitizing and activating module 204 is used for sensitizing and activating the surfaces of the roughened injection-molded parts of the flat-plate antennas;

the reduction or dispergation module 205 is configured to perform reduction or dispergation on each of the activated planar antenna injection molded parts;

the chemical nickel plating module 206 is used for performing chemical nickel plating treatment on the surfaces of the flat antenna injection molding parts after reduction treatment or dispergation treatment;

the copper plating module 207 is used for performing electro-coppering treatment on the surface of each panel antenna injection molding piece after the chemical nickel plating treatment;

the flash nickel plating module 208 is used for performing flash nickel plating treatment on the surface of each panel antenna injection molding part subjected to the electro-coppering treatment;

and the drying and assembling module 209 is used for drying and assembling each of the injection molded parts of the planar antenna after the nickel flash plating treatment to obtain the horn array antenna.

The invention can realize low-cost and mass production of the antenna by utilizing the injection molding, chemical plating and electroplating processes of the engineering plastics.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.