Monodispersed hollow ceramic microspheres fabricated based on preceramic polymers and pulse‐controlled coaxial injection

Monodispersed hollow ceramic microspheres fabricated based on preceramic polymers and pulse‐controlled coaxial injection

Hollow ceramic microspheres (HCMs) have widespread applications in aerospace and electronic areas owing to their multiple merits such as low density, low thermal conductivity, oxidation, and high‐temperature resistance. In this work, monodispersed HCMs were fabricated based on preceramic polymers an...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society Vol. 107; no. 8; pp. 5658 - 5667
Main Authors: Qin, Chuhui, Hu, Hongli, Zhang, Bo‐xing
Format: Journal Article
Language:English
Published: Columbus Wiley Subscription Services, Inc 01-08-2024
Subjects:
Ceramics
coaxial injection
Composition
Electromagnetic shielding
Frequency ranges
hollow ceramic microsphere
interfacial polarization
Microspheres
Oxidation resistance
Polymers
preceramic polymer
Silicon dioxide
Thermal conductivity
Ultrafines
Zirconium carbide
Zirconium dioxide
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hollow ceramic microspheres (HCMs) have widespread applications in aerospace and electronic areas owing to their multiple merits such as low density, low thermal conductivity, oxidation, and high‐temperature resistance. In this work, monodispersed HCMs were fabricated based on preceramic polymers and the pulse‐controlled coaxial injection approach. The size and shell morphology of hollow ceramic spheres can be flexibly tailored by adjusting the diameters of coaxial needles, and the composition and flow rates of inner and outer liquids. As‐obtained HCMs were comprised of ultrafine nanocrystals of ZrO2, SiO2, ZrC, and SiC, which can enhance the interfacial polarization effect. Through optimization of microstructure and composition, the electromagnetic shielding performance of HCMs reached up to 45 dB in the frequency range of 12–18 GHz. This work demonstrates a facile and general method for the fabrication of monodispersed HCMs. This work demonstrates a facile and general method for the fabrication of monodispersed hollow ceramic microspheres with precise control of size and shell thickness and their potential applications for electromagnetic shielding materials.
Bibliography:Editor's Choice
The Editor‐in‐Chief recommends this outstanding article.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.19825