Open AccessDielectric study of syntactic foams based on polydimethylsiloxane and hollow glass microspheres at X-band microwave frequency
Author(s) -
E. E. Mastalygina,
V. Yu. Chukhlanov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/896/1/012101
Subject(s) - dissipation factor , materials science , dielectric , microwave , polydimethylsiloxane , radio frequency , composite material , silicone , glass microsphere , transparency (behavior) , syntactic foam , dielectric loss , dielectric heating , frequency band , microsphere , optoelectronics , telecommunications , computer science , chemical engineering , antenna (radio) , engineering , computer security
The dielectric characteristics of syntactic foams based on polydimethylsiloxane binder and hollow glass microspheres at the X-band microwave frequency were studied. Experimental studies were carried out to determine and calculate dielectric constant, dielectric loss tangent in the range from 8 to 12 GHz, as well as radio transparency of the obtained materials. According to the results, an increase in the binder content over 15-20 vol.% led to a significant loss of radio transparency. The treatment by hydrophobizing organosilicon liquid was shown as an effective method for decreasing the dielectric loss tangent and increasing the radio transparency at the microwave radio frequency range. The developed materials proved the temperature stability and fire resistance. The expected applications of syntactic foams based on the developed materials include the various fields of structural and industrial engineering, in particular, producing the protective constructions for stationary radar stations and radio telescopes.