Highly Corrosion Resistant PEEK Antenna Cover

Antenna Umbrella - Highly Corrosion Resistant PEEK Radomes

When used to produce our radomes, we find that because these specialty engineered materials are much stronger than other materials that can be used to make radomes, the use of radomes generally requires a material with high mechanical strength, low dielectric constant and dielectric loss, high wave transmittance, and good weathering properties, which is why PEEK is so commonly used, or, if your application requires the extraction of very high temperatures, then PI (Polyimide).

Why use PEEK for radomes, good mechanical strength, PEEK materials are unbreakable thermoplastics and can be used to make radomes, microwave components, aerospace and military radomes. In fact, PEEK materials are often used in the production of military helicopters and other flying machines.

Toughness is an important factor when considering which antenna or radome material to use. The elements that make up PEEK materials are some of the toughest materials on earth. Not even uranium can match the strength of PEEK materials. The main reason for using these materials in radome construction is their ability to withstand extreme temperatures without deformation or flexibility.

Outstanding electrical properties are one of the advantages of PEEK materials, which have low frequency loss, making them ideal for data transmission applications, as well as for radio frequency waves and microwaves.

PEEK materials have excellent thermal properties, which is one of the main reasons why they are in high demand in the radome market. These materials exhibit high levels of thermal conductivity, which means that heat can be transferred quickly for heating and cooling purposes. the thermal conductivity value (in BTU/hr/ft2/°F) for PEEK is 0.82, while the value for PEEK materials is 0.76. This compares very favorably with other commonly used engineering plastics such as ABS (0.45), nylon (0.42) and polycarbonate (0.40). very favorable. In addition to excellent thermal conductivity, PEEK materials have low coefficient of thermal expansion (CTE) values, ranging from 5-6 ppm/°C for PEEK to 7-8 ppm/°C for PEEK materials, meaning that these materials do not expand or contract as much when exposed to elevated temperatures or when cooled from elevated temperatures to room temperature quickly, and they compare favorably to other thermoplastics with high CTEs, such as Polypropylene (57 ppm/°C). In addition, PEEK materials generally experience less dimensional change over a wider temperature range (-100°C to +200°) than other thermoplastics with high CTEs, such as polypropylene (57 ppm/°C).

Use of PEEK in radomes

In order to achieve precision guidance, the shield material of the weapon system guidance equipment needs to meet the requirements of good wave transmittance and high mechanical strength.PEEK material has low density, corrosion resistance, dimensional stability, good wave transmittance, resistance to mold and salt spray and other characteristics, so that the missile guidance equipment in extreme environments can be normal operation, the launch and acceptance of the signal will not be interfered with, so as to achieve the target of the precision strike. At present, this type of radome has been widely equipped with satellites, airplanes and army armored forces and so on.

The electric wave received by the guidance system is also a kind of electromagnetic wave, the electromagnetic wave propagated by the missile flight mainly has three kinds of TEM wave, TE wave and TM wave. Electromagnetic waves in the propagation of the difference is due to the different frequency, resulting in different attenuation, in general, the higher the frequency, the faster the attenuation, the direction of the stronger, which is extremely demanding on the protective cover of the guidance equipment, the wave-transparent rate.

In the frequency band 8-18 Hz, the transmittance is -1.13098 db, and its synthesis is more stable when it is used as the radome of airborne and weapon system.

PEEK materials have many applications in aerospace due to their high mechanical strength, light weight, resistance to high temperatures, hydrolysis, corrosion and flame retardancy. Outstanding electrical properties are one of the advantages of PEEK materials, which have a low dielectric constant and dielectric loss, good wave-transmission, and are ideal for data transmission applications, and it is also suitable for radio frequency waves and microwaves. This combination of advantages is why PEEK materials are in high demand in the radome market.