1. Application on communication radar radome
The radome is a functional structural part integrating electrical performance, structural strength, stiffness, 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 length of the entire system. Life, protection of antenna surface and positional accuracy.
The traditional production materials are generally steel plates and aluminum plates, which have many disadvantages, such as high quality, no corrosion resistance, single processing technology, and the inability to form products with too complicated shapes. The application has been subject to many restrictions, and the number of applications is decreasing.
As a material with excellent performance, FRP material can be completed by adding conductive fillers if conductivity is required. The structural strength can be completed by designing reinforcing ribs 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 performance requirements and service life requirements.
2. Application on mobile antenna for communication
With the rapid development of mobile communication in recent years, the amount of mobile antennas has also increased sharply. The amount of radome used as a protective coat for mobile antennas has also increased significantly. The material of mobile radome must have wave permeability, outdoor aging resistance, wind load resistance and Batch consistency, etc.
In addition, its service life must be long enough, otherwise it will bring great inconvenience to installation and maintenance, and the cost will increase. Most of the mobile radome produced in the past is made of PVC material, but this material is not resistant to aging, has poor wind load resistance, short service life, and the number of use is decreasing.
The FRP material has good wave permeability, strong outdoor aging resistance, and good wind resistance. The pultrusion production process has good batch consistency and a service life of more than 20 years. It fully meets the requirements of mobile radomes and has gradually replaced PVC. Plastic, becoming the first choice for mobile radomes.
The use of PVC plastic radome has been banned in Europe, America and other countries, and all of them are made of glass fiber reinforced plastic radome. With the further improvement of the material requirements of mobile radome in my country, the pace of making mobile radome with glass fiber reinforced plastic instead of PVC plastic is also accelerating.
3. Application on satellite receiving antenna
The satellite receiving antenna is the key equipment of the satellite ground station, which is directly related to the quality of the received 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 reflective surfaces can be designed.
The traditional production materials are generally steel plates and aluminum plates, which are produced by stamping technology. The thickness is generally thin, not resistant to corrosion, and the service life is short, generally only 3 to 5 years, and the limitations of use are increasing.
Made of FRP material, produced according to the SMC molding process, with good dimensional stability, light weight, anti-aging, good batch consistency, strong wind resistance, and can also design reinforcing ribs according to different requirements to improve strength, and 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 use requirements in terms of performance and technology.
Now the SMC satellite antenna has been applied in large quantities, the effect is very good, it is maintenance-free outdoors, the reception effect is good, and the application prospect is also very good.
4. Application in railway antenna
The railway has been speeded up for the sixth time. The speed of the train is getting faster and faster, and the signal transmission must be fast and accurate. The signal transmission is completed through the antenna, so the influence of the radome on the signal transmission is directly related to the transmission of information.
Radomes for FRP road antennas have 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. Radomes for antennas must withstand the erosion of sea climate for a long time. Ordinary materials cannot meet the requirements. FRP materials The performance characteristics are reflected to a greater extent at this moment.
5. Application in fiber optic cable strengthening core
Aramid fiber reinforced fiber optic cable strength core (KFRP) is a new type of high-performance non-metallic fiber optic cable strength core, which is widely used in access networks. The product has the following characteristics:
1) Lightweight and high strength: Aramid fiber reinforced optical cable has low density and high strength, and its strength and modulus are far higher than those of steel wire and glass fiber reinforced optical cable;
2) Low expansion: the aramid fiber reinforced optical cable reinforcement core has a lower linear expansion coefficient than steel wire and glass fiber reinforced optical cable reinforcement cores in a wide temperature range;
3) Impact resistance and fracture resistance: Aramid fiber reinforced optical cable reinforcement core not only has ultra-high tensile strength (≥1700Mpa), but also impact resistance and fracture resistance, and can still maintain a tensile strength of about 1300Mpa even when it is broken strength;
4) Good flexibility: the reinforcing core of aramid fiber reinforced optical cable is soft and easy to bend, and its minimum bending diameter is only 24 times the diameter;
5) Make the indoor optical cable compact in structure, beautiful in appearance and excellent in bending performance, especially suitable for wiring in complex indoor environments.