Construction of attapulgite-based one-dimensional nanonetwork composites with corrosion resistance for high-efficiency microwave absorption  

作　　者：Kai Xu Qingqing Gao Shaoqi Shi Pei Liu Yinxu Ni Zhilei Hao Gaojie Xu Yan Fu Fenghua Liu 

机构地区：[1]School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China [2]Zhejiang Key Laboratory of Additive Manufacturing Materials,Ningbo Institute of Materials Technology&Engineering,Chinese Academy of Sciences,Ningbo 315201,China [3]Northwest Yongxin Coatings Limited Company,Lanzhou 730046,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2025年第3期689-698,共10页矿物冶金与材料学报(英文版)

基　　金：support from the National Key Research and Development Program of China(No.2021YFB3701503);the Key Research and Development Program of Ningbo,China(No.2023Z107);the Jiangsu Key R&D program,China(No.BE2019072);the special project of Gansu regional science and technology cooperation,China(No.20JR10 QA579).

摘　　要：Exploring high-efficiency and broadband microwave absorption(MA)materials with corrosion resistance and low cost is ur-gently needed for wide practical applications.Herein,the natural porous attapulgite(ATP)nanorods embedded with TiO_(2)and polyaniline(PANI)nanoparticles are synthesized via heterogeneous precipitation and in-situ polymerization.The obtained PANI-TiO_(2)-ATP one-di-mensional(1D)nanostructures can intertwine into three-dimensional(3D)conductive network,which favors energy dissipation.The min-imum reflection loss(RL_(min))of the PANI-TiO_(2)-ATP coating(20wt%)reaches-49.36 dB at 9.53 GHz,and the effective absorption band-width(EAB)can reach 6.53 GHz with a thickness of 2.1 mm.The excellent MA properties are attributed to interfacial polarization,mul-tiple loss mechanisms,and good impedance matching induced by the synergistic effect of PANI-TiO_(2)nanoparticle shells and ATP nanor-ods.In addition,salt spray and Tafel polarization curve tests reveal that the PANI-TiO_(2)-ATP coating shows outstanding corrosion resist-ance performance.This study provides a low-cost and high-efficiency strategy for constructing 1D nanonetwork composites for MA and corrosion resistance applications using natural porous ATP nanorods as carriers.

关 键 词：microwave absorption corrosion resistance ATTAPULGITE TiO_(2) POLYANILINE 

分 类 号：TB33[一般工业技术—材料科学与工程]