1. Application on the radome of communication radar
The radome is a functional structure that integrates electrical performance, structural strength, rigidity, aerodynamic shape and special functional requirements. Its main function is to improve the aerodynamic shape of the aircraft, protect the antenna system from the external environment, and extend the entire system. Life, protect the accuracy of the antenna surface and position. Traditional manufacturing materials are generally steel plates and aluminum plates, which have many shortcomings, such as large quality, low corrosion resistance, single processing technology, and inability to form products with overly complex shapes. The application has been subject to many restrictions, and the number of applications is decreasing. As a material with excellent performance, FRP materials can be completed by adding conductive fillers if conductivity is required. The structural strength can be completed by designing stiffeners and locally changing the thickness according to the strength requirements. The shape can be made into different shapes according to requirements, and it is corrosion-resistant, Anti-aging, light weight, can be completed by hand lay-up, autoclave, RTM and other processes to ensure that the radome meets the requirements of performance and service life.
2. Application in mobile antenna for communication
In recent years, the rapid development of mobile communications has led to a sharp increase in the amount of mobile antennas. The amount of radome used as a protective clothing for mobile antennas has also increased significantly. The material of the mobile radome must have wave permeability, outdoor anti-aging performance, wind resistance performance, and Batch consistency, etc. In addition, its service life must be long enough, otherwise it will bring greater inconvenience to installation and maintenance, and increase the cost. The mobile radome produced in the past mostly uses PVC material, but this material is not resistant to aging, has poor wind load resistance, short service life, and less and less use. The glass fiber reinforced plastic material has good wave permeability, strong outdoor anti-aging ability, good wind resistance, good batch consistency produced by the pultrusion production process, and a service life of more than 20 years. It fully meets the requirements of mobile radomes. It has gradually replaced PVC Plastic has become the first choice for mobile radomes. Mobile radomes in Europe, the United States and other countries have banned the use of PVC plastic radomes, and all use glass fiber reinforced plastic radomes. With the further improvement of my country’s requirements for mobile radome materials, the pace of making mobile radomes made of glass fiber reinforced plastic materials instead of PVC plastic is further accelerated.
3. Application in satellite receiving antenna
Satellite receiving antenna is the key equipment of satellite ground station, it is directly related to the quality of receiving satellite signal and the stability of the system. The material requirements for satellite antennas are light weight, strong wind resistance, anti-aging, high dimensional accuracy, no deformation, long service life, corrosion resistance, and designable reflective surfaces. Traditional production materials are generally steel plates and aluminum plates, which are made by stamping technology. The thickness is generally thin, not corrosion resistant, and has a short service life, generally only 3 to 5 years, and its use limitations are getting bigger and bigger. It adopts FRP material and is produced in accordance with SMC molding process. It has good size stability, light weight, anti-aging, good batch consistency, strong wind resistance, and can be designed according to different requirements to increase the strength. The service life is more than 20 years. , It can be designed to lay metal mesh and other materials to achieve the satellite receiving function, and fully meet the requirements of use in terms of performance and technology. Now SMC satellite antennas have been applied in large quantities, the effect is very good, maintenance-free outdoors, the reception effect is good, and the application prospect is also very good.
4. Application in railway antenna
The railway has carried out the sixth speed increase. The train speed is getting faster and faster, and the signal transmission must be fast and accurate. The signal transmission is done through the antenna, so the influence of the radome on the signal transmission is directly related to the transmission of information. The radome for FRP railway antennas has been in use for quite some time. In addition, mobile communication base stations cannot be established at sea, so mobile communication equipment cannot be used. The antenna radome must withstand the erosion of the maritime climate for a long time. Ordinary materials cannot meet the requirements. The performance characteristics have been reflected to a greater extent at this moment.
5. Application in fiber optic cable reinforced core
Aramid fiber reinforced fiber reinforced core (KFRP) is a new type of high performance non-metallic fiber reinforced core, which is widely used in access networks. The product has the following characteristics:
1. Lightweight and high-strength: The aramid fiber reinforced optical cable has low density and high strength, and its strength or modulus far exceeds that of steel wire and glass fiber reinforced optical cable;
2. Low expansion: The aramid fiber reinforced optical cable reinforced core has a lower linear expansion coefficient than the steel wire and glass fiber reinforced optical cable reinforced core in a wide temperature range;
3. Impact resistance and fracture resistance: The aramid fiber reinforced fiber optic cable reinforcement core not only has ultra-high tensile strength (≥1700Mpa), but also impact resistance and fracture resistance. Even in the case of breaking, it can still maintain a tensile strength of about 1300Mpa ；
4. Good flexibility: The aramid fiber reinforced optical cable core has a light and soft texture and is easy to bend, and its minimum bending diameter is only 24 times the diameter;
5. The indoor optical cable has a compact structure, beautiful appearance, and excellent bending performance, which is especially suitable for wiring in complex indoor environments.
Post time: Jun-22-2021