Publication Date:
2014-03-16
Description:
An inorganic yellow pigment based on TiO 2 containing minor amounts of bismuth and molybdenum compounds was developed without rare earths or highly toxic elements. The material was produced starting from a composition of 99% (mol%) of rutile TiO 2 and 1% of MoO 3 , which were previously mixed and calcined at 1200°C. The composition consisted of 99.8% of the above mixture and 0.2% of bismuth(III) nitrate basic hexahydrate. This powder mixture was homogenized and calcined in a tubular furnace at 1200°C, applying different heating rates: 1, 30, 40, and 60°C/min. The yellow color was attributed to the presence of α-Bi 2 O 3 , γ*-Bi 2 MoO 6 , and Bi 2 Ti 2 O 7 phases. The powder particle size proved suitable for using the material as an inorganic pigment for polymers. The technological application of the pigment was tested in high-density polyethylene.
Print ISSN:
1546-542X
Electronic ISSN:
1744-7402
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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