GUO Yuhua1,PAN Guoxiang1,2,XU Minhong1,YANG Shengchen1,NIU Miaomiao1
(1.School of Engineering,Huzhou University,Huzhou 313000,China;2.Zhejiang Huayuan Pigment Co.,Ltd.,Deqing 313220,China)
Abstract:Zinc oxide coated iron oxide yellow pigments were prepared by using hydrothermal method taking zinc nitrate hexahydrate as raw materials.Effects of zinc nitrate content (feeding ratio n(Fe2O3)∶n(ZnO)=10∶1,10∶3,10∶5,10∶7,10∶9)and coating hydrothermal temperature (180,200,220,230,240 ℃)on the heat resistance of iron oxide yellow pigments were investigated.Structure and morphology of the samples were characterized by using XRD,SEM,FTIR and TG-DTA.The results show that the structure of iron yellow sample is not significantly altered after zinc coating,maintaining the needle-like morphology.With the increasing of the feeding ratio of zinc nitrate oxide,the heat resistance of the samples is enhanced.When the hydrothermal treatment temperature is 200 ℃ and the feeding ratio is 10∶7,the color difference of the samples is the smallest which is 1.11 with the best heat resistance.The color difference of the samples at the hydrothermal treatment temperature of 230 ℃ is 4.35,and the heat resistance of the coated samples is greatly reduced beyond this temperature.
Keywords:iron oxide yellow;zinc oxide;coating;hydrothermal method;heat resistance
中图分类号： TQ138 文献标志码：A
文章编号：1008-5548(2022)02-0114-07
DOI:10.13732/j.issn.1008-5548.2022.02.014
收稿日期： 2021-08-30，修回日期：2021-10-01，在线出版时间：2022-01-29。
基金项目：浙江省领军型创新创业团队项目，编号：2018R01008；浙江省自然科学基金项目，编号：LQ19E040001；LQ21E040001。
第一作者简介：郭玉华(1971—)，女，副教授，博士，研究方向材料的合成及应用。E-mail:guoyuhua@zjhu.edu.cn。
