Black Masterbatch is a highly concentrated mixture of carbon black pigment, polymer carrier resin, and additives used to color plastic products black while improving UV resistance, weatherability, and processing performance. It is widely used in the production of PE pipes, agricultural films, injection-molded parts, cables, packaging materials, automotive components, and construction plastics.
Material Composition
A typical Black Masterbatch consists of:
Carbon Black: 20%-50%
Carrier Resin: PE, PP, PS, ABS, EVA, or customized polymers
Dispersing Additives: 1%-5%
Processing Aids and Stabilizers
Premium Product Specifications
| Parameter | Typical Value |
|---|---|
| Carbon Black Content | 30%-50% |
| Carrier Resin | PE/PP/EVA |
| Melt Flow Index (MFI) | 5-25 g/10min |
| Moisture Content | ≤0.15% |
| Density | 1.1-1.5 g/cm³ |
| Heat Resistance | Up to 300°C |
| UV Resistance | Excellent |
| Pellet Shape | Cylindrical/Granular |
Advantages of High-Quality Black Masterbatch
Deep jet-black color and high gloss finish
Excellent dispersion without streaks or spots
Superior UV protection for outdoor products
Enhanced weather and oxidation resistance
Improved processing efficiency and reduced dust compared to powder pigments
Consistent color from batch to batch
Lower overall production costs
Competitive Analysis
| Product Type | Advantages | Disadvantages |
| Black Masterbatch | Easy processing, clean production, uniform color | Higher initial cost |
| Carbon Black Powder | Low raw material cost | Dust pollution, poor dispersion |
| Liquid Colorants | Easy mixing | Limited heat resistance |
| Black Pigment Powder | Economical | Color inconsistency and handling issues |
For most plastic manufacturers, Black Masterbatch offers the best balance of color performance, production efficiency, and long-term product quality.
Usage and Dosage
The recommended addition ratio depends on the required blackness and application:
Injection Molding: 1%-3%
Blow Molding: 2%-4%
PE Pipes: 2%-5%
Agricultural Film: 2%-4%
Cable Sheathing: 2%-5%
Black Masterbatch should be mixed uniformly with virgin or recycled resin before processing. Proper dosing ensures optimal color consistency, UV stability, and mechanical performance in the final plastic product.
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