CN106340722B - Antenna shell group and manufacturing method thereof - Google Patents
Antenna shell group and manufacturing method thereof Download PDFInfo
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- CN106340722B CN106340722B CN201510409487.3A CN201510409487A CN106340722B CN 106340722 B CN106340722 B CN 106340722B CN 201510409487 A CN201510409487 A CN 201510409487A CN 106340722 B CN106340722 B CN 106340722B
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Abstract
The invention provides an antenna shell group and a manufacturing method thereof, wherein the manufacturing method comprises the following steps: preparing an antenna; laying a fiber prepreg layer on the inner surface of the mould; wrapping the antenna with the fiber prepreg layer in the mold; and carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer, wherein the fiber composite material layer forms the shell of the antenna. The shell formed on the surface of the antenna is a fiber composite material layer, so that the mechanical strength is high, the phenomenon that metal on the surface of the antenna falls off can be effectively reduced, and the reliability of the antenna is improved.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to an antenna shell group and a manufacturing method thereof.
Background
An antenna is a transducer that converts a guided wave propagating on a transmission line into an electromagnetic wave propagating in an unbounded medium, or vice versa, and is a component used in a radio device for transmitting or receiving an electromagnetic wave. The antenna is used in many fields, among them, an airplane antenna is a device for radiating and receiving radio waves on an airplane, and the principle thereof is that a transmitting antenna converts ac electromagnetic energy sent from an oscillator into electromagnetic wave energy propagating to a certain space, and the airplane antenna needs to have features of small size, light weight and high strength.
An aerospace antenna includes a thin dielectric layer, metal structures attached to two sides of the thin dielectric layer, and a feeding line formed on the thin dielectric layer and connected to the metal structures. However, the antenna in the prior art is not protected by the housing, so that the metal on the surface of the antenna is easy to fall off, and further the performance of the antenna is failed.
Disclosure of Invention
The invention mainly aims to provide an antenna shell group and a manufacturing method thereof, and aims to solve the problem that metal on the surface of an antenna is easy to fall off in the prior art, and the performance of the antenna is further failed.
In order to achieve the above object, according to an aspect of the present invention, there is provided a method of manufacturing an antenna housing set, the method including: preparing an antenna; laying a fiber prepreg layer on the inner surface of the mould; wrapping the antenna with the fiber prepreg layer in the mold; and carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer, wherein the fiber composite material layer forms the shell of the antenna.
Further, the step of laying up a fibrous prepreg layer on the surface of the mold comprises: providing a mould consisting of a first sub-mould and a second sub-mould; a first prepreg layer is laid on the surface of the first sub-mould, a second prepreg layer is laid on the surface of the second sub-mould, and the first prepreg layer form a fiber prepreg layer.
Further, before the step of laying the fiber prepreg layer on the surface of the mold, a release agent is coated on the inner surface of the mold and a drying treatment is performed.
Further, the drying temperature is 15-125 ℃, and the drying time is not less than 30 min.
Further, after the step of laying the fiber prepreg layer on the inner surface of the mold, the manufacturing method further includes a step of coating an adhesive on the fiber prepreg layer to form an adhesive layer.
Further, after the step of coating the adhesive on the fiber prepreg layer to form the adhesive layer, the fiber prepreg layer covered with the adhesive layer is subjected to vacuum-pumping treatment for 10-20 min.
Further, the first sub-mold and the second sub-mold are closed to enable the fiber prepreg layer to wrap the antenna; after the fiber composite layer is formed, the fiber composite layer and the antenna are removed from the mold.
Further, in the step of curing, the curing temperature is 100-200 ℃, and the curing time is 120-180 min.
Further, the fiber prepreg layer is an impregnated composite including resin and a fiber body, the resin is epoxy resin or cyanate resin, and the fiber body is any one or more of hemp fiber, glass fiber, polypropylene fiber, aramid fiber and basalt fiber.
Further, the step of preparing the antenna comprises: preparing a core layer comprising a structural foam material; laying a fiber prepreg layer on the inner surface of the antenna mould; connecting the side edges of the antenna mold to enable the fiber prepreg layer to wrap the core material layer; carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer; a metal structure is formed on the outer surface of the fiber composite layer.
Further, the antenna comprises a fiber composite material layer and the antenna, wherein the fiber composite material layer is wrapped on the surface of the antenna to form a shell of the antenna.
Further, the antenna comprises a fiber composite material layer, a core material layer and a metal structure layer, wherein the core material layer is arranged in the fiber composite material layer, the metal structure layer is arranged on the outer surface of the fiber composite material layer, and the core material layer comprises a structural foam material.
By applying the technical scheme of the invention, the invention provides an antenna shell group and a manufacturing method thereof, wherein the manufacturing method comprises the steps of preparing an antenna; laying a fiber prepreg layer on the inner surface of the mould; wrapping the antenna with the fiber prepreg layer in the mold; and carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer, wherein the fiber composite material layer forms the shell of the antenna. The shell formed on the surface of the antenna is a fiber composite material layer, so that the mechanical strength is high, the phenomenon that metal on the surface of the antenna falls off can be effectively reduced, and the reliability of the antenna is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart illustrating a method for manufacturing an antenna housing assembly according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an antenna housing set according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As described in the background, the antenna in the prior art has no outer shell protection, so that the metal on the surface of the antenna is easy to be stripped, and the performance of the antenna is further deteriorated. The inventors of the present application have studied in view of the above-mentioned problems and have proposed a method for manufacturing an antenna housing set, as shown in fig. 1, the method including: preparing an antenna; laying a fiber prepreg layer on the inner surface of the mould; wrapping the antenna with the fiber prepreg layer in the mold; and carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer, wherein the fiber composite material layer forms the shell of the antenna.
In the manufacturing method, the shell formed on the surface of the antenna is the fiber composite material layer, so that the mechanical strength is high, the phenomenon that metal on the surface of the antenna falls off can be effectively reduced, and the reliability of the antenna is improved.
An exemplary embodiment of a method of manufacturing an antenna housing set provided in accordance with the present invention will be described in more detail below. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
First, an antenna is prepared. The process steps for preparing the antenna can be set according to actual requirements, and preferably, the preparation method of the antenna comprises the following steps: preparing a core layer comprising a structural foam material; laying a fiber prepreg layer on the inner surface of the antenna mould; connecting the side edges of the antenna mold to enable the fiber prepreg layer to wrap the core material layer; carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer; and forming a metal structure layer on the outer surface of the fiber composite material layer. In the above preparation method, since the core material layer is composed of the structural foam material, the structural foam material has excellent specific stiffness and specific strength, excellent compression, tension, cutting and bending properties, and light weight, so that the antenna including the fiber composite material layer and the core material layer has high mechanical strength and light weight.
After the step of preparing the antenna is completed, a fiber prepreg layer is laid on the inner surface of the mold. Preferably, the fibrous prepreg layer may be a plurality of layers of fibrous prepregs arranged in a stack, the plurality of layers of prepregs arranged in a stack enabling the fibrous prepreg layer to have greater strength. Wherein the method of forming a prepreg may comprise the steps of: in order to thermally melt the epoxy resin to form a glue, the fiber body and the glue are subjected to an impregnation treatment to form a prepreg. The material of the fibre body may be selected according to the prior art, in a preferred embodiment the fibre body is a fibre bundle or a fibre fabric and the fibre body is any one or more of hemp, carbon, glass, polypropylene, aramid and basalt fibres. More preferably, the fiber body is a plain quartz fiber cloth or a unidirectional quartz fiber cloth.
There are many ways of impregnating the fibrous body with the glue to form a prepreg, and in a preferred embodiment, the step of impregnating comprises: putting the glue solution into a gluing layer machine for gluing to form a gluing layer; and (3) putting the fiber body and the adhesive layer into an impregnation machine, and then carrying out continuous hot pressing to form the prepreg. The skilled person can select suitable process parameters for the impregnation treatment according to the actual process requirements.
The step of laying up a layer of fibrous prepreg on the surface of the mould may be varied and in a preferred embodiment the step of laying up a layer of fibrous prepreg on the surface of the mould comprises: providing a mould consisting of a first sub-mould and a second sub-mould; a first prepreg layer is laid on the surface of the first sub-mould, a second prepreg layer is laid on the surface of the second sub-mould, and the first prepreg layer form a fiber prepreg layer. In the preferred embodiment, the fiber prepreg layer can be formed only by using a mold formed by two divided molds, and the antenna housing required for this application can be formed.
Before the step of laying the fiber prepreg layer on the surface of the mold, it is preferable to coat a release agent on the inner surface of the mold and perform a drying treatment. The mold release agent allows the antenna housing formed in a subsequent process to be more easily released from the mold. When the mold release agent is brushed in the mold, the surface temperature of the mold is not lower than 15 ℃, if the mold release agent is coated for the first time, preferably, three complete layers of mold release agent are continuously coated on the surface of the mold, each layer is vertical to the coating direction of the previous layer, drying treatment can be carried out for at least 15min after each layer is coated, and after the final coating is finished, the mold release agent is dried, wherein the drying treatment temperature can be 15-125 ℃, and the drying time is not shorter than 30 min. Within the above preferred process parameter ranges, the release agent can achieve a better separation effect.
After the step of laying the fibrous prepreg layer on the inner surface of the mold, preferably, the manufacturing method further includes a step of coating an adhesive on the fibrous prepreg layer to form an adhesive layer. The adhesive layer enables the fiber composite material layer and the core material layer to have firmer connectivity. The material for forming the adhesive layer may be an adhesive commonly used in the prior art, such as a thermoplastic adhesive, a thermosetting adhesive, a synthetic rubber adhesive, and a rubber resin agent.
In the above preferred embodiment, after the step of forming the adhesive layer on the fiber prepreg layer, the fiber prepreg layer covered with the adhesive layer may be subjected to vacuum-pumping for 10 to 20 min. The vacuumizing treatment can reduce the harm of water vapor brought to the fiber prepreg layer in the process, and the adhesive layer can be better adhered to the fiber prepreg layer.
After the step of laying the fiber prepreg layer on the inner surface of the mold is completed, the fiber prepreg layer in the mold is wrapped around the antenna. When the antenna is manufactured by using a mold composed of a first sub-mold and a second sub-mold symmetrically arranged with the first sub-mold, the first sub-mold and the second sub-mold can be closed to wrap the antenna with the fiber prepreg layer.
After the step of wrapping the antenna with the fiber prepreg layer in the mold is completed, a curing treatment is performed to cure the fiber prepreg layer to form a fiber composite material layer, and the fiber composite material layer constitutes a housing of the antenna. The fiber prepreg layer as a semi-finished product can be formed into a fiber composite material layer with high mechanical strength by the curing treatment, and the fiber composite material layer and the internal antenna can be integrally cured. The process conditions of the curing treatment can be set according to actual requirements, preferably, the curing temperature is 100-200 ℃, and the curing time is 120-180 min. The fiber composite layer formed within the above preferred parameter range has higher mechanical strength and better bonding force between the fiber composite layer and the antenna. Further, after the fiber composite material layer is formed, the antenna and the housing of the antenna are removed from the mold.
According to another aspect of the present invention, there is provided an antenna housing set, as shown in fig. 2. The antenna shell assembly comprises a fiber composite material layer and an antenna 10, wherein the fiber composite material layer is wrapped on the surface of the antenna 10 to form a shell 20 of the antenna 10. The housing 20 formed on the surface of the antenna 10 is a fiber composite material layer, so that the mechanical strength is high, the phenomenon of metal falling off on the surface of the antenna 10 can be effectively reduced, and the reliability of the antenna 10 is improved. Preferably, the antenna housing set of the present invention is applied to the field of aerospace technology.
In the antenna 10 case set described above, the type and structure of the antenna 10 in the antenna 10 case set may be set according to actual requirements, and preferably, the antenna 10 includes a fiber composite material layer 110, a core material layer 120 and a metal structure layer 130, the core material layer 120 is disposed in the fiber composite material layer 110, the metal structure layer 130 is disposed on an outer surface of the fiber composite material layer 110, and the core material layer 120 includes a structural foam material. Since the core layer 120 is composed of the structural foam material, the structural foam material has excellent specific stiffness and specific strength, excellent compression, tension, cutting, and bending properties, and is light in weight, thereby allowing the antenna 10 including the fiber composite layer 110 and the core layer 120 to have high mechanical strength and light weight.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the invention provides an antenna shell group and a manufacturing method thereof, wherein the manufacturing method comprises the steps of preparing an antenna; laying a fiber prepreg layer on the inner surface of the mould; wrapping the antenna with the fiber prepreg layer in the mold; and carrying out curing treatment to cure the fiber prepreg layer to form a fiber composite material layer, wherein the fiber composite material layer forms the shell of the antenna. The shell formed on the surface of the antenna is a fiber composite material layer, so that the mechanical strength is high, the phenomenon that metal on the surface of the antenna falls off can be effectively reduced, and the reliability of the antenna is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A manufacturing method of an antenna shell group is characterized by comprising the following steps:
preparing an antenna (10);
laying a fiber prepreg layer on the inner surface of the mould;
wrapping the antenna (10) with the fibre prepreg layer in the mould;
performing a curing process to cure the fiber prepreg layer to form a fiber composite layer, and the fiber composite layer constitutes a housing (20) of the antenna (10),
after the step of laying the fibrous prepreg layer on the inner surface of the mold, the manufacturing method further includes a step of coating an adhesive on the fibrous prepreg layer to form an adhesive layer,
the step of preparing the antenna (10) comprises:
preparing a core material layer (120), the core material layer (120) comprising a structural foam material;
laying a fiber prepreg layer on the inner surface of the antenna mould;
connecting the sides of the antenna mold such that the fiber prepreg layer wraps around the core layer (120);
carrying out a curing treatment to cure the fiber prepreg layer to form a fiber composite material layer (110);
forming a metal structure (130) on an outer surface of the fiber composite layer (110).
2. The method of manufacturing according to claim 1, wherein the step of laying the fiber prepreg layer on the surface of the mold includes:
providing the mold consisting of a first sub-mold and a second sub-mold;
laying a first fibrous prepreg layer on the surface of the first sub-mould and laying a second fibrous prepreg layer on the surface of the second sub-mould, and the first and second fibrous prepreg layers constitute the fibrous prepreg layer.
3. The method according to claim 1, wherein a release agent is applied to an inner surface of the mold and a drying treatment is performed before the step of laying the fiber prepreg layer on the surface of the mold.
4. The manufacturing method according to claim 3, wherein the temperature of the drying treatment is 15 to 125 ℃, and the drying time is not less than 30 min.
5. The manufacturing method according to claim 1, wherein after the step of coating the adhesive on the fiber prepreg layer to form the adhesive layer, the fiber prepreg layer covered with the adhesive layer is subjected to vacuum treatment for 10 to 20 min.
6. The method of manufacturing according to claim 2,
closing the first and second sub-molds so that the fiber prepreg layer wraps the antenna (10);
after forming the fibre composite layer, the fibre composite layer and the antenna (10) are released from the mould.
7. The method according to claim 1, wherein the curing step is carried out at a curing temperature of 100 to 200 ℃ for a curing time of 120 to 180 min.
8. The production method according to claim 1, wherein the fiber prepreg layer is an impregnated composite including a resin and a fiber body, the resin is an epoxy resin or a cyanate resin, and the fiber body is any one or more of a hemp fiber, a glass fiber, a polypropylene fiber, an aramid fiber, and a basalt fiber.
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| CN108929519A (en) * | 2017-05-24 | 2018-12-04 | 洛阳尖端技术研究院 | A kind of basalt fiber composite material and preparation method thereof |
| US10848189B2 (en) * | 2018-07-25 | 2020-11-24 | The Boeing Company | Method for curing and embedding an antenna in a composite part |
| CN109462019B (en) * | 2018-11-19 | 2020-11-13 | 中国电子科技集团公司第十四研究所 | Ultra-light hybrid composite material tubular antenna and manufacturing method thereof |
| CN111703089A (en) * | 2020-06-24 | 2020-09-25 | 贵州玄武岩新材料工程技术开发有限公司 | 5G basalt fiber composite material antenna housing and preparation method thereof |
| CN114204269B (en) * | 2021-10-21 | 2023-09-29 | 西安邮电大学 | Light composite material logarithmic periodic antenna and manufacturing method thereof |
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