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Black Masterbatch: Enhancing Color Strength and UV Stability in Plastic Products
Black masterbatch is a concentrated mixture of carbon black pigment (typically 20-50% loading) uniformly dispersed within a carrier resin, designed to be diluted ("let down") during plastics processing to efficiently color the final product. It is the most common and economically significant type of color masterbatch used globally. The primary function of the carbon black is to impart a deep, uniform black color with excellent UV stability, which protects the polymer from degradation caused by sunlight. Beyond aesthetics, the carbon black serves critical functional roles: it provides conductivity (in grades designed for electrostatic discharge protection), opacity to shield contents from light, and can enhance certain mechanical properties. The carrier resin is chosen to be compatible with the base polymer being colored, such as polyethylene (PE), polypropylene (PP), or polystyrene (PS), to ensure even dispersion and maintain the performance of the final plastic article.
The production of a high-quality black masterbatch…
