PERFORMANCE TEST AND HEAT RESISTANCE OF PHYSICAL AND CHEMICAL COATED IRON OXIDE BLACK PIGMENT

Ke Yan (), Chunyan Bao and Zheng Wang ()
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Ke Yan: College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Chunyan Bao: College of Art, Shandong University of Science and Technology, Qingdao 266590, China
Zheng Wang: Shandong University of Science and Technology, Qingdao 266590, China

Surface Review and Letters (SRL), 2022, vol. 29, issue 01, 1-12

Abstract: The current development strategy of inorganic pigments is to develop technologies, such as high coloring ability, low oil absorption, easy dispersion, heat resistance, and nontoxicity. As the largest colored inorganic pigments, iron oxide pigments are widely used in building materials, coatings, rubber, plastics, paint, etc. In this paper, black iron oxide pigment was used as the carrier, and alumina substance was used as the support. Precipitation method was used to synthesize the aluminum oxide-coated iron oxide black composite pigment under different experimental conditions, and the coated iron was studied by XRD, SEM and TEM characterization methods. The structure of the black pigment, discuss the influence of the coating temperature, reaction pH, coating method, neutralizing acid and other factors on the microstructure of the composite material and the performance of the pigment. The experimental results show that, through co-current coating, the temperature of the reaction system of 80∘C and the reaction pH of 10–11 are the best parameters for coating. The oil absorption, tinting power, hiding power and dispersion power of the coated iron black were tested, and the performance of the iron black pigment was greatly improved after the coating. The heat resistance and light fastness of iron black were tested through the color difference change experiment. The experimental results showed that the heat resistance and light fastness of iron black pigment showed good performance after coating.

Keywords: Coating; composite pigment; Iron oxide black; Alumina; Performance test (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22500068

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