阅读说明：本技术 一种树脂基碳纤维复合材料柔性天线表面金属化方法 (Surface metallization method for flexible antenna made of resin-based carbon fiber composite material ) 是由 王珂 夏振涛 程涛 陈立 李瑶瑶 顾昊 范琳 范嵘 于 2019-11-13 设计创作，主要内容包括：本发明公开了一种树脂基碳纤维复合材料柔性天线表面金属化方法,包括以下步骤：清洁柔性天线表面；将清洁后的柔性天线放入高功率磁控溅射设备的真空腔室；将真空腔室抽真空,建立本底真空；通入氩气；在真空腔室内形成射频气体等离子体,溅射清洗去除柔性天线表面杂质；在树脂基碳纤维复合材料表面沉积金属离子,形成柔性天线表面金属化膜层；停止通入氩气；将真空腔室放气；将柔性天线取出,即可。利用孪生靶对称双极性高功率脉冲磁控溅射技术,实现树脂基碳纤维复合材料柔性天线表面高结合力金属化膜层的制备,能够防止金属化膜层在柔性天线反复卷曲的情况下发生脱落或者局部损伤而失效,提高可卷曲柔性天线的可靠性。(The invention discloses a surface metallization method of a flexible antenna made of a resin-based carbon fiber composite material, which comprises the following steps: cleaning the surface of the flexible antenna; putting the cleaned flexible antenna into a vacuum chamber of high-power magnetron sputtering equipment; vacuumizing the vacuum chamber, and establishing background vacuum; introducing argon; forming radio frequency gas plasma in the vacuum chamber, and removing impurities on the surface of the flexible antenna by sputtering and cleaning; depositing metal ions on the surface of the resin-based carbon fiber composite material to form a flexible antenna surface metallized film layer; stopping introducing the argon; deflating the vacuum chamber; and taking out the flexible antenna. The method has the advantages that the high-bonding-force metallized film layer on the surface of the resin-based carbon fiber composite flexible antenna is prepared by utilizing a twin-target symmetric bipolar high-power pulse magnetron sputtering technology, the metallized film layer can be prevented from falling off or being damaged locally to lose efficacy under the condition that the flexible antenna is repeatedly curled, and the reliability of the curled flexible antenna is improved.)

1. A surface metallization method for a flexible antenna made of a resin-based carbon fiber composite material is characterized by comprising the following steps:

step 1, cleaning the surface of a resin-based carbon fiber composite flexible antenna;

step 2, putting the cleaned resin-based carbon fiber composite flexible antenna into a vacuum chamber of high-power magnetron sputtering equipment, and installing and fixing the antenna on a workbench;

step 3, vacuumizing a vacuum chamber of the high-power magnetron sputtering equipment, and establishing background vacuum;

step 4, opening a gas valve and introducing argon;

step 5, turning on a radio frequency power supply, forming radio frequency gas plasma in the vacuum chamber, simultaneously turning on a bias power supply, and carrying out sputtering cleaning to remove impurities on the surface of the resin-based carbon fiber composite flexible antenna;

step 6, turning on a high-power pulse magnetron sputtering power supply and a bias power supply, and depositing metal ions on the surface of the resin-based carbon fiber composite material to form a flexible antenna surface metallized film layer;

step 7, closing the gas valve and stopping introducing argon;

step 8, exhausting the vacuum chamber of the high-power magnetron sputtering equipment;

and 9, taking out the resin-based carbon fiber composite flexible antenna.

2. The surface metallization method of the resin-based carbon fiber composite flexible antenna in the claim 1, wherein the resin-based carbon fiber composite flexible antenna in the step 1 is prepared by an autoclave curing process by using M55J/AG80 composite materials, and the thickness of the antenna is 0.24-0.4 mm.

3. The method for metalizing the surface of the resin-based carbon fiber composite flexible antenna according to claim 1, wherein the high-power magnetron sputtering device in the step 2 is a symmetric bipolar high-power pulse magnetron sputtering device adopting a twin target.

4. The method for metalizing the surface of the resin-based carbon fiber composite flexible antenna according to claim 1, wherein the background vacuum of the step 3 is 1-5 x 10^-3Pa。

5. The method for metallizing the surface of a resin-based carbon fiber composite flexible antenna according to claim 1, wherein the argon flow in step 4 is 50 ± 1 sccm.

6. The method for metalizing the surface of the resin-based carbon fiber composite flexible antenna according to claim 1, wherein the radio frequency power supply in the step 5 has an operating power of 300 +/-50W, a bias power supply has an operating amplitude of 5 +/-1 kV, and an operating frequency of 100 +/-5 Hz.

7. The method for metalizing the surface of the resin-based carbon fiber composite flexible antenna according to claim 1, wherein the magnetron sputtering power supply in the step 6 has a working power of 400 +/-50W, a working frequency of 2000 +/-5 Hz, and a bias power supply working amplitude of 100 +/-10V.

8. The method for metalizing the surface of the flexible antenna made of the resin-based carbon fiber composite material according to claim 1, wherein the metal ions deposited on the surface of the flexible antenna in the step 6 are silver ions or aluminum ions.

9. The surface metallization method of the resin-based carbon fiber composite flexible antenna, according to claim 1, wherein the thickness of the metallized film layer on the surface of the flexible antenna in the step 6 is 1-6 um, and the bonding force of the film layer is not less than 5N/cm.

Technical Field

The invention relates to the technical field of surface treatment, in particular to a surface metallization method for a flexible antenna made of a resin-based carbon fiber composite material.

Background

High resolution remote sensing places demands on ultra-large reflector antennas. In order to realize light weight, resin-based carbon fiber composite materials are generally adopted to manufacture antennas; due to envelope limitations of the launch vehicle, a rollable flexible antenna needs to be employed; in order to meet the thermal control requirement and prolong the service life of the antenna, the surface of the antenna needs to be metallized. The resin-based carbon fiber composite material surface metallization layer prepared by adopting traditional processes such as spraying, evaporation and the like can basically meet the use requirements of a conventional solid-surface antenna with a shape which is not changed, but for a flexible antenna which needs to be repeatedly curled, the metallization film layer can fall off or be locally damaged, rapidly fails under the action of thermal stress formed by space alternating temperature, and cannot meet the use requirements. Therefore, a method for metalizing the surface of the flexible antenna made of the resin-based carbon fiber composite material is needed, and the preparation of the metalized film layer with high bonding force on the surface of the flexible antenna is realized.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a surface metallization method of a resin-based carbon fiber composite flexible antenna, which utilizes a twin target symmetric bipolar high-power pulse magnetron sputtering technology to realize the preparation of a high-bonding-force metallization film layer on the surface of the resin-based carbon fiber composite flexible antenna and can realize the preparation of the high-bonding-force metallization film layer on the surface of the resin-based carbon fiber composite flexible antenna.

The purpose of the invention is realized by the following technical scheme:

the invention provides a surface metallization method for a flexible antenna made of a resin-based carbon fiber composite material, which comprises the following steps:

step 1, cleaning the surface of a resin-based carbon fiber composite flexible antenna;

step 2, putting the cleaned resin-based carbon fiber composite flexible antenna into a vacuum chamber of high-power magnetron sputtering equipment, and installing and fixing the antenna on a workbench;

step 3, vacuumizing a vacuum chamber of the high-power magnetron sputtering equipment, and establishing background vacuum;

step 4, opening a gas valve and introducing argon;

step 5, turning on a radio frequency power supply, forming radio frequency gas plasma in the vacuum chamber, simultaneously turning on a bias power supply, and carrying out sputtering cleaning to remove impurities on the surface of the resin-based carbon fiber composite flexible antenna;

step 6, turning on a high-power pulse magnetron sputtering power supply and a bias power supply, and depositing metal ions on the surface of the resin-based carbon fiber composite material to form a flexible antenna surface metallized film layer;

step 7, closing the gas valve and stopping introducing argon;

step 8, exhausting the vacuum chamber of the high-power magnetron sputtering equipment;

and 9, taking out the resin-based carbon fiber composite flexible antenna.

Preferably, the resin-based carbon fiber composite flexible antenna prepared in the step 1 is prepared by an autoclave curing process by using an M55J/AG80 composite material, has a thickness of 0.24-0.4 mm, and is also applicable to other flexible non-metallic materials.

Preferably, the high-power magnetron sputtering device in the step 2 is a symmetric bipolar high-power pulse magnetron sputtering device adopting twin targets, and other devices cannot realize the high-power magnetron sputtering device because plasmas with high ionization rates cannot be generated.

Preferably, the background vacuum of the step 3 is 1-5 multiplied by 10^-3Pa。

Preferably, the argon flow in step 4 is 50. + -.1 sccm.

Preferably, the working power of the radio frequency power supply in the step 5 is 300 +/-50W, the working amplitude of the bias power supply is 5 +/-1 kV, and the working frequency is 100 +/-5 Hz.

Preferably, the working power of the magnetron sputtering power supply in the step 6 is 400 +/-50W, the working frequency is 2000 +/-5 Hz, and the working amplitude of the bias power supply is 100 +/-10V. The parameters are summarized through a process parameter optimization test, and have influence on the film bonding force, uniformity, efficiency and the like, and improper process parameters can cause negative influences such as reduction of the film bonding force, poor uniformity and the like, and seriously affect the product quality.

Preferably, the metal ions deposited on the surface of the flexible antenna in the step 6 are silver ions or aluminum ions.

Preferably, the thickness of the metallized film layer on the surface of the flexible antenna in the step 6 is 1-6 um, and the bonding force of the film layer is more than or equal to 5N/cm.

Compared with the prior art, the invention has the following beneficial effects:

the surface metallization method for the resin-based carbon fiber composite flexible antenna provided by the invention can realize the preparation of the high-bonding-force metallized film layer on the surface of the resin-based carbon fiber composite flexible antenna, and prevent the metallized film layer from falling off or being damaged locally to lose efficacy under the condition that the flexible antenna is repeatedly curled.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of a high power magnetron sputtering apparatus; wherein 101 is a vacuum chamber; 102 is a twin target; 103 is an air valve; 104 is a resin-based carbon fiber composite flexible antenna; 105 is a workbench; 106 is a bias power supply; 107 is a vacuum pump; 108 is a high-power pulse magnetron sputtering power supply;

fig. 2 is a flowchart of a surface metallization method of a resin-based carbon fiber composite flexible antenna.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.