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Published on December 13, 2010

Carbon black: Why quality matters

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Date Published December 13, 2010
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Carbon black is an additive in the rubber used to manufacture tires which,when compounded into the polymer matrix, significantly improves tensile strength and abrasion resistance. Improved rubber chemistry and tire design are creating exciting new tires that offer ever greater mileage and performance under extreme weather conditions. However, the carbon black manufacturing operation also produces an impurity known simply as which, since the average grit size is several times larger than the clustered carbon black particles, if left in there with the carbon black will significantly and adversely impact the tire manufacturing equipment as well as the final quality of the tire. Reducing these grits using high-speed grinding mills, down to a size whereby they are rendered harmless, is the focus of this paper.