Weatherability and heat resistance enhanced by interaction between AG25 and Mg/AI-LDH  

作　　者：Pei-Yao Yang Xiang-Cui Liu Yu-Chao Wang Huan-Ran Zheng Jin-Xian Wang Jia-Yi Zheng Meng-Jie Liu Dan-Ni Deng Yu Bai Ying-Bi Chen Tong Zhang Zhi-Ming Liu Yong-Peng Lei 

机构地区：[1]State Key Laboratory of Powder Metallurgy,Powder Metallurgy Research Institute,Central South University,Changsha 410083,China [2]Research Institute of Chemical Defense,Beijing 102205,China

出　　处：《Rare Metals》2024年第6期2758-2768,共11页稀有金属（英文版）

基　　金：financially supported by the External Collaboration Fund(No.XM2022FH5079)。

摘　　要：Although inorganic pigments in common spectral tuning materials show good weatherability and heat resistance,the limited color choices,weak coloring power,poor dispersibility,and a possibility of toxicity limit their development.On the basis of organic pigments which possess a wide range of colors,high coloring power,good transparency,and high safety,herein,the modified pigment and biomimetic coating with improved weatherability,especially ultraviolet(UV)resistance(from 2 to 6 days),was achieved by intercalating acid green 25(AG25)pigment into Mg/Al-layered double hydroxides(Mg/Al-LDH).Furthermore,the heat resistance of AG25 was also significantly increased.Moreover,the spectral stability of pigments after heat treatment is superior with almost unchanged spectral profile and green reflection peak.The formation of strong N-H bonds and the S-M(Mg,Al)bonds between Mg/Al-LDH laminates and AG25 molecules contributes to the improvement.This work shows potential for biomimetic leaf materials in respect of reflective spectra stability.

关 键 词：Layered double hydroxide BIOMIMETIC Acid green 25 INTERACTION WEATHERABILITY Heat resistance 

分 类 号：TQ620.1[化学工程—精细化工]