Лако-красочные материалы — производство

The rheological component is likewise dependent on the particle size and the result­ing surface area, but also on the structure and the surface chemistry. Finely divided pigment blacks have a relatively high surface area and therefore a strong thickening effect. If the particle size increases, the surface area decreases and the thickening effect is reduced. […]

The printing ink industry places many requirements on pigment blacks. Several properties are expected for pigment blacks, both in printing inks and for the printed products. Printing inks: good wettability, easily dispersible, high concentration, optimum viscosity, good flow characteristics, storage stability, and economy. Printed products: jetness, hiding power, blue hue, gloss, rub resistance. The use […]

Pigment blacks have a number of advantages compared to other black pigments and black organic dyes: — Color stability — Solvent resistance — Acid and alkaline resistance — Thermal stability — Hiding power Though not considered as an international standard, the following classification system serves as the main reference for most manufacturers. This system contains […]

Quantitatively, the pigment blacks are substantially less important than the rubber blacks. Qualitatively, pigment blacks belong to the group of highly sophisticated pigments. These carbon blacks are used for a variety of applications such as printing, paints and coatings manufacture, plastics, fibre, paper and others (printing blacks, coating blacks, plastic blacks). But here as well, […]

High reinforcing capability, fine carbon blacks, tire tread blacks (particle size: 18­28 nm) 4.7.1.2 Semi-Active Blacks Lower reinforcing capability, carcass blacks (particle size: 40-60 nm). 4.7.1.3 Inactive Blacks Negligible reinforcing capability, high filling rates (particle size: >60 nm). Though the preceding typology is still widely respected, the internationally recognized ASTM designations are those generally used […]

About 90% of the carbon black produced is used in the rubber industry as reinforcing filler in tires, tubes, conveyor belts, cables, rubber profiles, and other mechanical rubber goods. Furnace blacks are predominantly used in rubber processing. The following widely acknowledged typology of carbon blacks based on reinforcing properties has stood the test of time. […]

The majority of the carbon black produced is shipped as bulk material (up to 80%); the rest is handled in bags. Generally, the large stocks of pelletized furnace blacks for the rubber industry are stored, by the producers as well as the customer, in plastic — coated steel storage tanks consisting of one or more […]

The density of carbon black powders is difficult to determine. It can vary between 1.82 and 1.89 g cm-3. 180 I 4 Black Pigments 4.5.2 Electrical Conductivity This property is usually not measured for the carbon black itself, but in the system containing the carbon black, i. e. in a polymer or binding agent. Conductivity […]

For a long time, characterization of carbon blacks was a question of determining different shades of black with the human eye. Precise data on the reinforcing effect were available only to a limited degree. The composition described below refers to all carbon black grades, regardless of the production method. Process-related variances have already been addressed […]

Hydrocarbon vapors may be almost quantitatively decomposed in a plasma into car­bon and hydrogen [4.18]. This process can be used to make small-particle carbon blacks with new properties. However, an economical plasma-based commercial pro­cess is not yet known. The Huels-electric-arc process was the only large-scale process using plasma re­actions where large quantities of carbon black […]