Brabender C-Type Carbon Black Absorptometer
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | C-Type Absorptometer |
| Price | USD 67,500 (FOB Hamburg) |
Overview
The Brabender C-Type Carbon Black Absorptometer is a precision-engineered instrument designed for the quantitative determination of oil absorption number (OAN) of carbon black and other reinforcing fillers used in rubber compounding, masterbatch production, and polymer formulation. It operates on the principle of controlled paraffin oil (or dibutyl phthalate, DBP) addition to a dry carbon black sample under dynamic shear conditions, with real-time torque monitoring of the mixing process. As oil is incrementally dosed into the rotating mixing chamber, the evolving rheological response—captured as torque versus volume curve—reveals three distinct physical phases: the free-flowing phase (oil dispersion without agglomeration), the coagulation phase (onset of particle network formation), and the termination phase (maximum torque plateau indicating saturation). The OAN is defined as the volume of oil (mL/100 g) required to reach the critical torque threshold—typically 70% of the maximum torque—as specified in ASTM D2414 Method B and Method C. This value correlates directly with the aggregate structure, surface area, and dispersibility of carbon black, thereby serving as a critical quality control parameter for compound processing behavior and vulcanizate performance.
Key Features
- High-precision torque transducer with ±0.2% full-scale accuracy and digital signal conditioning for reproducible phase transition detection
- Programmable peristaltic titration unit delivering oil at user-defined rates (0.1–2.0 mL/min), compliant with ASTM D2414 timing requirements
- Sealed, thermostatically controllable mixing chamber (optional jacketed version) enabling temperature-stabilized testing from 20°C to 40°C
- Interchangeable mixing bowls and rotor assemblies—designed for rapid cleaning and cross-contamination avoidance between samples
- Variable-speed AC drive system (50–200 rpm) with closed-loop speed regulation ensuring consistent shear history across tests
- Integrated calibration routine for torque zero-point and titration volume verification prior to each test sequence
Sample Compatibility & Compliance
The C-Type Absorptometer accepts standard 5 g carbon black samples (per ASTM D2414) as well as alternative filler types including silica, calcium carbonate, and clay-based pigments—provided particle size distribution remains within the validated range (D90 < 100 µm). All mechanical and software functions comply with ASTM D2414 (2023 edition), ISO 34-1:2021 (Rubber—Determination of carbon black—Part 1: Oil absorption number), and DIN 53601. Data acquisition meets GLP documentation standards, with audit-trail-enabled software supporting FDA 21 CFR Part 11 compliance when deployed in regulated environments (e.g., pharmaceutical excipient or medical-grade elastomer manufacturing).
Software & Data Management
The 32-bit Windows-compatible control software (v5.8.2) provides full instrument orchestration: automated titration start/stop, real-time torque curve visualization, polynomial fitting of inflection points, and automatic OAN calculation based on ASTM-specified torque thresholds. Default parameters conform to ASTM D2414 Method C (70% max torque criterion), but users may override settings for method development or internal SOP alignment. Each test generates a timestamped report containing raw torque vs. volume data, derivative curves, phase boundary markers, and statistical summaries (n=3 repeatability %RSD < 1.8%). Export formats include CSV, PDF, and XML; data archives are stored locally with optional network backup integration. Software validation packages—including IQ/OQ documentation—are available upon request.
Applications
- Quality assurance of furnace black, thermal black, and acetylene black batches in carbon black manufacturing
- Process optimization of rubber compound mixing cycles by correlating OAN with Mooney viscosity and scorch time
- Filler selection support for high-performance tire treads, conveyor belts, and antistatic elastomers
- R&D screening of surface-modified carbon blacks and hybrid filler systems for improved dispersion kinetics
- Regulatory submission support for ISO/TS 16949-certified suppliers requiring traceable, auditable test records
FAQ
What standards does the Brabender C-Type Absorptometer fully support?
ASTM D2414 (Methods B and C), ISO 34-1:2021, DIN 53601, and GB/T 3780.2—covering both paraffin oil and DBP-based determinations.
Is manual calibration required before each test?
No—the system performs automatic torque zeroing and titration volume verification during startup; only periodic verification against NIST-traceable torque standards is recommended every 6 months.
Can the instrument be integrated into a LIMS environment?
Yes—via OPC UA or TCP/IP interface; raw data files and summary reports are exportable in structured formats compatible with major LIMS platforms.
What maintenance is required for long-term torque measurement stability?
Annual recalibration of the torque sensor by an accredited metrology lab is advised; routine cleaning of the mixing bowl and rotor with isopropanol prevents residue buildup affecting phase detection.
Does the software support multi-language UI and report generation?
English and German interfaces are built-in; custom translation packs for French, Spanish, and Chinese are available under extended support contracts.
