NEXCEL Ph.D student Wu Zihao gave a presentation on “The 3rd China Metamateria

Time: 2024/05/22 Publisher： oiginal Views：

Introduction

The Third China Metamaterials Conference, hosted by the Metamaterials Branch of the Chinese Materials Research Society and other organizations, was successfully held in Wuzhen, Tongxiang City, Zhejiang Province. The conference attracted over 3,000 representatives from the academic and industrial sectors to jointly discuss the innovation and development of metamaterials.

Wu Zihao, Ph.D. candidate jointly trained by Wuhan University of Technology and China Building Materials Academy, was the principal investigator of the NEXCEL 2024 Ph.D. project titled "Preparation and mechanism of carbon black/cement-based electromagnetic wave absorbing materials with multi-mechanism". Mr. Wu participated in the conference and gave a presentation on "Research on the construction and functional mechanism of lightweight absorbent materials based on secondary aluminum ash foamed cement."

Carbon black, as a by-product of petroleum, has strong dielectric loss performance and high economic efficiency, making it suitable to be used as an efficient wave-absorbing agent in construction. The project team utilized carbon black as an electromagnetic modification material, in conjunction with secondary aluminum ash as a foaming agent, to develop a new type of foamed cement-based lightweight wave-absorbing material, and clarified the relationship between material composition, structure, and wave-absorbing performance.

The research results indicate that the porous structure modified by carbon black exhibits superior electromagnetic loss performance compared to other modification methods. The wave-absorbing agent, carbon black, not only influences the wave-absorbing performance but also regulates the pore structure of the foamed cement-based material, reducing the average pore size. Additionally, due to the excellent construction of the porous structure, the carbon black-modified foamed cement-based material demonstrates better mechanical and thermal insulation properties. This achievement provides theoretical guidance for the large-scale application of carbon black and the development of lightweight cement-based wave-absorbing materials.

During his presentation, Dr. Wu focused on discussing the structure-performance relationship and wave-absorbing mechanism of carbon black-modified foamed cement-based lightweight wave-absorbing materials, and elaborated on the advantages and application prospects of this material, receiving unanimous recognition from the attendees.