Abstract: Powder coatings have good environmental properties and excellent coating results. This article introduces how to choose titanium white pigments suitable for powder coatings. It is recommended to consider the following properties of titanium dioxide: (1) the type of titanium dioxide; (2) the surface treatment of titanium dioxide; (3) the particle size distribution of titanium dioxide; (4) pH value of titanium dioxide; (5) water content of titanium dioxide.
Titanium dioxide (TiO2) is the white pigment used to give whiteness and hiding power, also called opacity, to coatings, inks, and plastics. The reason for this is two-fold:
On June 26, the reporter learned that the long-term movement of the titanium dioxide leading enterprise Lomon Billions, aiming to achieve a total output of 1 million tons in the next two years!
According to LomonBillions’ recent investigations by relevant institutions, LomonBillions plans to realize the full resumption of porfitable production by Xinli Titanium within 3-6 months, which is expected to have a positive impact on LomonBillions’ revenue report; In the later period, the production capacity of Xinli Titanium Chlorination Production Line will be increased to 100,000-200,000 tons.
ESA instrumentation setup TINOX Technical Service
Titanium dioxide can be utilized in various applications such as pigment base in paints, coatings, plastics and laminates. During both, the production process at the TiO2 producer and the manufacturing process of paints, coatings and composite materials, avoiding the coagulation and agglomeration of the TiO2 dispersion is important. Surface chemistry of the TiO2 dispersion can be controlled during the measurement of Electrokinetic Sonic Amplitude (ESA) by regulating the pH value e.g. for avoiding flocculation of dispersion. This means: the zeta potential of the dispersion should not be or close to zero. Zeta potential is a dimension of the effective surface charge of particles and the interaction between the particles with ions in solution and particles among each other. Characterising the absolute surface charge (in an aqueous dispersion) of the TiO2pigment, negative or positive in the unit [mV], gives a decisive parameter for an ultimate application of the product. The zeta potential depends on the kind of solvent, the nature and amount of the ions in solution (specific conductivity), and the pH value. It is also the main factor determining the stability of the whole dispersion.
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