Лако-красочные материалы — производство

Carbon blacks will burn slowly (smoulder) and sustain combustion that may not be visible in the powder or pellet form (no visible flames or smoke). A direct water spray or stream may spread the fire due to the burning carbon black powder floating on the water. A fog spray is recommended when water is used […]

4.8.1 Carbon Black, Soot, and Black Carbon Carbon black is not soot or black carbon, which are the two most common, generic terms applied to various unwanted carbonaceous by-products resulting from the in­complete combustion of carbon-containing materials, such as oil, fuel oils or gasoline, coal, paper, rubber, plastics and waste material. Most soot and black […]

Many polymers, especially polyethylene, are degraded by UV radiation under atmo­spheric conditions. Blacks can confer long-term stability to such polymers, firstly by absorbing the UV radiation and secondly by acting as free-radical acceptors to inactivate the active intermediate species formed in the degradation process. The stabilizing effect is improved with decreasing particle size and with […]

The incorporation of sufficiently large amounts of blacks can impart antistatic (re­sistivity 106-109 Q) or conductive (<106 Q) properties to plastics. The conductivity of a plastic with carbon black filler increases with decreasing particle size and in­creasing degree of aggregation of the black, and increasing carbon black concentra­tion. Surface oxides and hydrogen-containing surface groups of […]

Carbon black is used in large amounts for the black and gray tinting of plastics, in­cluding polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS polymers, and polyurethanes. The largest application in tonnages is in polyolefins. Pelletized black is usually employed. Carbon black concentrations of 0.5-2% are required for full-tone tinting. For crystal-clear plastics, the addition of up […]

Thanks to its excellent properties, pigment black is the most frequently used black pigment in the paint and coatings industry. The following special behavior of these pigments makes it suitable for nearly all coatings applications, from deco systems to the highly sophisticated automotive topcoats: — Outstanding coloristic, from just black to deep black with blue […]

Due to the very high printing speeds involved in the processing of magazine gravure inks, a low viscosity is essential. Low-structure pigment blacks with medium-sized particles are used to produce printing inks, which can fulfill these conditions and, at the same time, display excellent hiding power, jetness and gloss. Decoration and packaging printing inks In […]

These are manufactured with medium to high-structure pigment blacks. An un­pleasant characteristic of conventional newspaper inks is their low rub resistance. This can be influenced by the structure of the pigment black. Low-structure pigment blacks improve the rub resistance, those with a higher structure promote smudging. A combination of both pigment blacks is usually the […]

The substrate, which is to be printed upon, is an important criterion for the choice of pigment blacks. Low-structure pigment blacks can achieve a high quality of jetness and gloss on coated papers. High-structure pigment blacks produce higher levels of jetness on uncoated papers. Generally, better results can be expected with coated papers. Offset inks, […]

Pigment blacks are electrically conductive as a function of their structure. The higher the structure, the better the conductivity of the pigment black. Electrically conductive printing inks are manufactured with special high-structured pigment blacks. Due to the special nature of these pigment blacks, conductive printing inks have a relatively high viscosity. In order to achieve […]