Overview
Aqueous Carbon Black is a colloidal dispersion of carbon black particles in water, stabilized by surfactants or other dispersing agents. It is a preferred alternative to solvent-based carbon black dispersions due to its environmental benefits and ease of handling. The product is widely used in industries requiring high-performance pigments or fillers with low volatile organic compound (VOC) emissions. Carbon black itself is a fine powder produced by the incomplete combustion of hydrocarbons. The aqueous form allows for easier incorporation into water-based systems, making it ideal for eco-friendly applications. Its primary advantage lies in its ability to provide consistent coloration and reinforcement without the need for hazardous solvents.
Physical and Chemical Properties
Aqueous Carbon Black exhibits high tinting strength and excellent UV resistance, making it suitable for outdoor applications. The dispersion typically has a solids content ranging from 20% to 40%, with particle sizes averaging between 20 and 200 nanometers. Its viscosity can vary depending on the concentration and dispersing agents used. The chemical stability of aqueous carbon black is generally good, but it can be affected by extreme pH levels or high temperatures. The dispersion is non-flammable and has a low odor, which enhances its safety profile compared to solvent-based alternatives. However, it may require agitation before use to ensure uniformity.
Main Applications
The primary use of Aqueous Carbon Black is in the coatings industry, where it serves as a black pigment for water-based paints and varnishes. Its excellent dispersion stability ensures smooth application and consistent color. In the ink industry, it is used for printing inks, especially those requiring low VOC content. Another significant application is in the rubber industry, where it acts as a reinforcing filler for tires and other rubber products. Additionally, it is used in plastics to improve conductivity and UV resistance. Recent advancements have also explored its use in battery electrodes and conductive films.
Safety and Storage
While Aqueous Carbon Black is less hazardous than its solvent-based counterparts, proper safety measures should still be observed. Inhalation of mist or direct skin contact should be avoided, as it may cause irritation. Personal protective equipment (PPE) such as gloves and goggles is recommended during handling. Storage conditions are critical to maintaining the product's stability. It should be kept in a cool, dry place, away from direct sunlight and freezing temperatures. Containers should be tightly sealed to prevent evaporation or contamination. Shelf life typically ranges from 6 to 12 months under optimal conditions.
B2B Procurement Guide
When procuring Aqueous Carbon Black, B2B buyers should prioritize suppliers with a proven track record of quality and consistency. Key specifications to evaluate include particle size distribution, solids content, and pH level. Batch-to-batch consistency is crucial for industrial applications. Price negotiations should consider volume discounts and long-term contracts. It is also advisable to request samples for testing compatibility with your specific application. Logistics planning should account for the product's sensitivity to temperature extremes, ensuring proper transportation and storage conditions.
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