Carbon Black N550
Carbon Black N550 is a semi-reinforcing furnace black widely used in rubber applications, providing good processing and balanced performance.
Description
Carbon Black N550, identified by CAS number 1333-86-4, is a type of semi-reinforcing furnace carbon black, primarily composed of elemental carbon (C). It is produced through the incomplete combustion or thermal decomposition of heavy petroleum products under controlled conditions. This grade is characterized by an average particle size that falls within the intermediate range compared to other carbon black types, typically around 40-50 nm. Its surface area is relatively low to medium, which contributes to its moderate reinforcing properties and ease of dispersion within polymer matrices. The manufacturing process ensures a consistent particle structure and surface chemistry, critical for achieving predictable performance in end products. N550 offers a beneficial balance of properties including good tensile strength, tear strength, and abrasion resistance, without significantly increasing hardness or modulus to the extent of highly reinforcing grades. Its morphology also facilitates good processing characteristics in rubber compounding, reducing mixing times and improving extrusion behavior. It is a preferred choice for applications where a balance of reinforcing properties and processing efficiency is desired. The unique combination of particle size, structure, and surface activity makes N550 a versatile additive in the rubber industry.
Applications
Carbon Black N550 is extensively utilized in the rubber industry due to its semi-reinforcing properties and good processability. Its primary application is in tire components, particularly innerliners, sidewalls, and carcass compounds, where it contributes to improved resistance against fatigue and enhances overall durability. Beyond tires, N550 is a common filler in a wide range of mechanical rubber goods such as industrial hoses, conveyor belts, sealants, gaskets, and various molded and extruded rubber products. It provides moderate reinforcement, enhancing strength and service life, while maintaining good elastic properties. Additionally, it is used in certain plastic applications as a pigment for UV protection and electrical conductivity, although its main industrial role remains within rubber compounding to achieve specific physical and mechanical properties.
Storage & Handling
Store in a cool, dry, well-ventilated area away from direct sunlight, heat, and incompatible materials. Keep containers tightly closed. Avoid dust generation and accumulation. Use appropriate personal protective equipment during handling. Ensure proper grounding to prevent static electricity discharge.
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