Properties and Synthesis of α-Fe2O3/SiO2 Composite Color

Yun Li; Chen Xue Wang; You Shang; Ping Chang; Lina Jia

doi:10.4028/www.scientific.net/AMR.189-193.1023

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193Properties and Synthesis of α-Fe2O3/SiO2 Composite...

Properties and Synthesis of α-Fe₂O₃/SiO₂ Composite Color

Abstract:

Iron oxide red is one of the important iron oxide pigments. Domestic iron oxide red will be shading and darkening when calcination temperature is above 800°C. In addition to it possess strong absorption of ultraviolet and can not be resistant to strong acids. In order to improve the above disadvantages, the α-Fe₂O₃/SiO₂ core–shell particles were synthesized with hydrolysis of sodium silicate as silica source by the way of heterogeneous phase coring precipitation in the Fe₂O₃ suspending liquid. The surface structure of these composite particles was characterized by means of IR, XRD and TG-DTA. The heat resistance, acid resistance and anti-UV absorption capacity of Fe₂O₃ particles before and after modification were analyzed via X-rite color difference meter and Ultraviolet Spectrometer. Results showed that the heat resistance, acid resistance and anti-UV absorption capacity are improved significantly because of SiO₂ coat.

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Periodical:

Advanced Materials Research (Volumes 189-193)

Pages:

1023-1026

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.1023

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Online since:

February 2011

Authors:

Yun Li, Chen Xue Wang, You Shang, Ping Chang, Lina Jia

Keywords:

Color-Difference, Silicon-Coated, Surface Modification, α-Fe₂O₃/SiO₂ Composite Color

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