Brief Introduction:
Carbon black grades like N110, N220, N330, N550, and N660 are widely used in rubber applications, particularly in tires and conveyor belts, to enhance strength, wear resistance, and durability.
The N-series classification is based on particle size and structure, where lower numbers (e.g., N110, N220) indicate finer particles and higher reinforcement, making them ideal for high-stress applications like tire treads. Mid-range grades like N330 offer a balance of reinforcement and flexibility, while higher-numbered grades (e.g., N550, N660) have larger particles, providing better processability and cost efficiency for less demanding parts like conveyor belts and tire inner liners. Each grade is selected based on the required balance of performance, durability, and processing ease.
Specifications:
| Grade | N110 | N220 | N330 | N550 | N660 |
|---|---|---|---|---|---|
| Iodine | 145±8 | 121±7 | 82±7 | 43±7 | 36±5 |
| Oil Absorption | 113±6 | 114±6 | 102±6 | 121±7 | 90±5 |
| Coompressed Oil Absoption | 91-103 | 92-104 | 82-94 | 80-90 | 69-79 |
| Tint Strength | 115-131 | 108-124 | 96-112 | —— | —— |
| CTAB Surface Area | 112-128 | 103-117 | 73-85 | 36-48 | 31-43 |
| External Surface Area | 107-123 | 99-113 | 69-81 | 34-44 | 29-39 |
| Total Surface Area | 120-134 | 107-121 | 72-84 | 35-45 | 30-40 |
| Heat Loss | ≤3.0 | ≤2.5 | ≤2.0 | ≤1.5 | ≤1.5 |
| 300% Modulus Characteristic | -3.1±1.5 | -1.9±1.5 | -0.5±1.5 | -0.5±1.5 | -2.2±1.5 |
| Bulk Density | 345±40 | 355±40 | 380±40 | 360±40 | 440±40 |
Features:
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Improves tensile strength, tear resistance, and modulus.
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Enhances load-bearing capacity, critical for tires and industrial rubber products.
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Reduces wear and extends service life, especially in tire treads (e.g., N110, N220).
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Essential for conveyor belts exposed to friction and impact.
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Absorbs UV radiation, preventing rubber degradation.
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Improves thermal conductivity, reducing heat buildup in tires.
Storage:
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Dry & Cool: Store in a well-ventilated, dry area with low humidity (below 65% RH) to prevent moisture absorption.
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Temperature Control: Ideal storage temperature is below 35°C (95°F); avoid extreme heat or freezing conditions.
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Avoid Direct Sunlight: Protect from UV exposure to prevent degradation.
Package:
25 kg Multi-Wall Paper Bags or plastic bags