Effect of Frequency Selective Surface on Microwave Absorbing Properties of PET Cement-Based Materials
ZHANG Yuefang
HAO Wanjun
LIU Shunhua
Abstract：To solve environmental pollution problem caused by electromagnetic wave radiations,frequency selective surface(FSS) composite of cement-based electromagnetic wave absorbing material was prepared by using waste polyethylene terephthalate(PET) broken bottle chips and polypropylene fiber as electromagnetic wave absorbing materials and reinforcement.The waste PET chips have the advantages of low cost,light weight,thin thickness,high strength and simple processing technology.Three types of FSS such as closed,open and combined type were compounded on the surface of cement matrix.It greatly improves the absorbing properties in 2-18 GHz band.The combined type FSS with 1 ring has the best absorption performance in S band(2-4 GHz),the minimum value of reflection loss(RL) achieves-19.9 dB at 2.5 GHz and the ratio of less than-10 dB absorption band width is 47.5％.The influence of unit size and number on absorbing properties exhibits different characteristics between the S band and 4-18 GHz band.
Keywords：cement-based absorbing materialpolyethylene terephthalate (PET)frequency selective surface(FSS)impedance matchingS wave band
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 117-123 )