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Influence of the Foaming Agent on the Particle Size and Microwave Absorption Properties of Hollow Ceramic Microspheres
Author(s) -
Xudong Cai,
Jianjiang Wang,
Runxiu Yang,
Chao Xiong,
Hongfei Lou
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12171
Subject(s) - materials science , particle size , polyethylene glycol , ceramic , reflection loss , peg ratio , microwave , analytical chemistry (journal) , absorption (acoustics) , particle (ecology) , particle size distribution , quenching (fluorescence) , chemical engineering , composite material , optics , composite number , chromatography , fluorescence , chemistry , physics , oceanography , finance , quantum mechanics , engineering , economics , geology
In this study, based on self‐reactive quenching technique, hollow ceramic microspheres ( HCM s) containing barium ferrites were synthesized using A l+ F e 2 O 3 + B a O 2 +sucrose+ epoxy resin as the reactive system and polyethylene glycol ( PEG ) as the foaming agent. The influence of PEG on the particle size and microwave absorption properties of HCM s is investigated using SEM , XRD , laser particle size analyzer and vector network analyzer. Preliminary results show that the average particle size increases initially from 28 μm to 53 μm after adding PEG , as well as the particle distribution gets narrower and the surface takes on classical hexagonal crystals. B a F e 2 O 4 , the intermediate phase of M ‐type barium ferrites ( B a F e 12 O 19 ), can be seen in XRD . The microwave absorption properties are improved greatly in the frequency range of 8–18 GH z. And the minimum reflection loss can reach −10 dB.
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