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Regular version of the site

Article

Thermal hardening of parabolic polymer composite antennas with the use of microwave radiation

T-Comm: Telecommunications and transport. 2017. Vol. 11. No. 2. P. 52-55.
Nefedov V. N., Mamontov A. V., Simonov V., Chebykin A., Saygin I.

Theoretical results of curing antennas made of composite materials using electromagnetic field of super high frequencies as a source of heat energy are presented. The advantages of microwave heat treatment of the antenna made of carbon fiber with epoxy binder in comparison with traditional methods are presented. Results of theoretical studies on the accelerated curing of antennas made of composite materials in microwave radiation type installation in the periodic mode are presented.

A radial type setup for the polymerization of antennas made of composite materials with a diameter of 1200mm, a thickness of 3mm at a temperature of +180°with the electromagnetic field frequency oscillations of 2450MHz and a power output of 4.8kW was developed. A set allows to reduce the energy consumption for the technological process of accelerated curing of an antenna made of composite material, increase productivity and improve working conditions of staff.

The essential expressions and calculation results of the temperature distribution along the thickness of the antenna made of composite material are presented. The heating duration of the antenna from the temperature of +20°C to a temperature of +200°C, weight 5,4kg, is 160 seconds. The temperature deviation from the nominal value of the temperature on the surface of the antenna is absent, and through the thickness of the antenna does not exceed 2°C.

As a result, the research shows the prospects of using microwave radiation for the production processes associated with accelerated curing of parabolic antennas made of composite materials. Currently work is underway to study the strength characteristics of polymer antennas, assuming that the uniform heating of the antenna leads to the absence of internal stresses and other defects of the material structure of the antenna.