A mixture of zinc sulfide and barium sulfate, also known as zinc barium white, white crystalline powder. It is a mixture of zinc sulfide and barium sulfate. The more zinc sulfide it contains, the stronger its covering power and the higher its quality.
1 .Ink is a kind of viscous fluid composed of color material, filler, additive and color developing agent. At present, printing newspapers, books, pictures and printing iron, printing metal, printing porcelain, printing rubber, printing plastic and printing radio semiconductor circuit boards are inseparable from ink. Because titanium dioxide has a large hiding power, high achromatous power, fine particles, dilute acid dilute alkali resistance, light resistance, heat resistance, not easy to yellowing, good hydrophobicity, small fluidity, insoluble in the color development agent and can be evenly dispersed in the color development agent, it is an indispensable color of advanced white ink and light ink.
2 Paint is a viscous suspension composed of pigments, oils, paints (resins), solvents and drying agents. White pigment is the most widely used pigment, white paint and light paint are used in it, so in the paint, the amount of white pigment is much more than other pigments. The white pigments that can be used to make paint are often zinc white, zinc barium white and titanium dioxide. Due to the development of coating industry varieties, the emergence of synthetic resin coatings, its polymerization degree is large, such as adding zinc white, because of the zinc white alkaline, and the free fatty acid in the coating, and have a tendency to thicken; If zinc barium white is added, the weather resistance is poor. However, the use of titanium dioxide can improve the above shortcomings, because the particles of titanium dioxide are small and uniform, the photochemical stability is high, the covering rate is more than two times that of zinc white, zinc barium white, and the achromatic power is 5 to 6 times, so the amount of pigment in the entire paint can be greatly reduced. At the same time, the paint made is good in color, not easy to yellow, and has chemical stability such as heat resistance and acid resistance, sulfur resistance, alkali resistance, especially rutile titanium dioxide, its structure is stable, weather resistance is better than anatase type, ultraviolet radiation resistance, outdoor will not powder and other advantages. Therefore, it is suitable for all kinds of high-grade ships, Bridges, automobiles, buildings and other outdoor coatings with high weather resistance. Anatase titanium dioxide is generally only used for indoor paint. It can be seen that titanium dioxide has become an essential white pigment in the production of coatings. About 60% of the world's titanium dioxide is used in the production of various coatings.
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Parameters | B311 | B301 |
Total zinc and Barium sulphate, % | ≥99.0 | ≥99.0 |
zinc sulfide content, % | ≥30.0 | ≥28.0 |
zinc oxide content, % | ≤0.3 | ≤0.6 |
Color, compared with standard samples | better | better |
Tinter reducing power | ≥105 | ≥100 |
105°C volatile matter, % | ≤0.3 | ≤0.3 |
Water solubles, % | ≤0.3 | ≤0.4 |
Water suspension pH-value | 6.0-8.0 | 6.0-8.0 |
Oil absorption, g/ 100g | ≤14 | ≤14 |
Hiding power | ≥ 5 % of standard sample | ≥ 5 % of standardsample |
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