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日用化学工业（中英文）

日用化学工业（中英文） ›› 2025, Vol. 55 ›› Issue (7): 887-894.doi: 10.3969/j.issn.2097-2806.2025.07.009

• 开发与应用 • 上一篇    下一篇

共沉淀法合成氧化铁系颜料的结构与耐热性能研究

王一婷1,*(),马敏智2   

  1. 1.河南大学美术学院，河南 开封 475001
    2.许昌学院 化工与材料学院，河南 许昌 461000
  • 收稿日期:2025-01-15 修回日期:2025-06-11 出版日期:2025-07-22 发布日期:2025-07-23
  • 基金资助:
    河南省哲学社会科学规划项目(2024CYS015)

Study on the structure and heat resistance of iron oxide pigments synthesized by co-precipitation method

Yiting Wang1,*(),Minzhi Ma2   

  1. 1. Fine arts College of Henan University, Kaifeng, Henan 475001, China
    2. College of Advanced Materials and Energy, Xuchang University, Xuchang, Henan 461000, China
  • Received:2025-01-15 Revised:2025-06-11 Online:2025-07-22 Published:2025-07-23
  • Contact: *E-mail: hd15737033593@163.com

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摘要： 以硫酸铝和氢氧化钠为原料，采用共沉淀法制备了羟基氧化铝（AlOOH）包覆氧化铁黄颜料，研究了AlOOH包覆量对氧化铁黄颜料晶格结构、红外光谱、微观形貌、反射率、热失重、Zeta电位以及耐热性能的影响。结果表明：共沉淀法合成的是勃姆石型AlOOH，尺寸为15~25 nm的球状颗粒，颗粒状的AlOOH包覆在板条状形貌的氧化铁黄颜料表面，减少了氧化铁黄颜料在高温下的直接受热和氧化，提高了颜料的热稳定性，15% AlOOH在800 ℃的失重为3.2%，热稳定性最佳。氧化铁黄颜料的Zeta电位随AlOOH包覆量的增加而持续增大，20% AlOOH的Zeta电位为最大值26.8 mV。15% AlOOH颜料在可见光的反射率达到最大值49.3%，在240 ℃加热30 min后测试了不同AlOOH包覆量的氧化铁黄颜料的实物颜色变化及色差值变化情况，15% AlOOH颜料的色差值ΔE为最低值仅3.65，Δa最低为0.53，颜料的变红程度最小，热稳定性最佳。

关键词: 共沉淀法, 氧化铁黄, 羟基氧化铝, 颜料, 包覆, 耐热性能

Abstract:

Using aluminium sulfate and sodium hydroxide as raw materials, hydroxyl aluminium oxide （AlOOH） coated iron oxide yellow pigment was prepared by the co-precipitation method. The effects of AlOOH coating amount on the lattice structure, infrared spectrum, microscopic morphology, reflectance rate, thermal weight loss, Zeta potential and heat resistance of iron oxide yellow pigment were studied. The results show that AlOOH of the Boehmite type synthesized by the co-precipitation method is spherical particles with a size of 15-25 nm. The granular AlOOH is coated on the surface of the plate-shaped morphology of the iron oxide yellow pigment, reducing the direct heating and oxidation of the iron oxide yellow pigment at high temperatures and improving the thermal stability of the pigment. The weight loss of 15% AlOOH at 800 ℃ is 3.2%, indicating the best thermal stability. The Zeta potential of iron oxide yellow pigment continuously increases with the increase of the coating amount of AlOOH, and the Zeta potential of 20% AlOOH is the maximum value of 26.8 mV. The reflectivity of 15% AlOOH pigment in visible light reaches the maximum value of 49.3%. After heating at 240 ℃ for 30 minutes, the physical color changes and color difference value changes of iron oxide yellow pigments with different AlOOH coating amounts were tested. The color difference value ΔE of 15% AlOOH pigment is the lowest value of only 3.65, and the lowest Δa is 0.53. The degree of reddening of the pigment is the smallest and its thermal stability is the best.

Key words: co-precipitation method, iron oxide yellow, hydroxy-alumina, pigments, cladding, heat resistance

中图分类号: 

  • TQ138.11