Polyurethane Prepolymer Synthesis Reactor
Professional prepolymer reactor for TDI, MDI and NDI prepolymer production with high vacuum degassing and precise automatic temperature control
±0.3% Accuracy
Ratio precision
loT Ready
Remote monitoring
30% Energy Save
vs.conventional
2-4 Components
Flexible config
Product Overview
Specially designed for TDI, MDI and NDI prepolymer production, with high vacuum degassing, precise automatic temperature control and multi-point safety interlock to deliver uniform, high-quality prepolymer for stable CPU elastomer manufacturing.
Many polyurethane manufacturers face bubble defects, batch performance inconsistency, poor temperature control and safety risks during prepolymer synthesis. Our Haifeng HF-Premix prepolymer reactor is specially designed to address these challenges. The reactor features high vacuum degassing (6×10²Pa), precise automatic temperature control (80–120℃), and multi-point safety interlock to deliver uniform, high-quality prepolymer for stable CPU elastomer manufacturing. Optimized tank welding structure and precision sealing technology, combined with reliable dynamic sealing of the stirring shaft, maintain a long-lasting high vacuum environment that effectively suppresses bubble generation, improves product compactness and reduces internal defects in finished prepolymers. The automatic temperature regulation system enables rapid heating and uniform temperature distribution throughout the reaction process. PLC and HMI control system is available as optional upgrade, with efficient and reliable cooling solution enabling flexible process switching for different formula requirements. The reactor vessel features high structural rigidity, maintaining stable shape under long-term high temperature and vacuum working conditions, ensuring lasting alignment accuracy of the stirring system and stable performance throughout extended production cycles. The system integrates multi-point interlock protection logic, with automatic warning and disposal functions for overpressure, overtemperature and stirring abnormal conditions, complying with chemical production safety specifications and reducing manual operation risks.
Operation Workflow
Raw Material Loading
Load polyols and isocyanates (TDI, MDI or NDI) into the reactor vessel according to the target formulation. The optimized vessel bottom design and discharging valve layout minimize residual material and ensure complete reaction.
Dehydration & Degassing Pretreatment
Activate the high vacuum system to achieve ultimate vacuum degree of 6×10²Pa. The optimized tank welding structure and precision sealing technology, combined with reliable dynamic sealing of the stirring shaft, maintain a long-lasting high vacuum environment for effective dehydration and degassing of raw materials.
Precise Temperature Control & Reaction
Set the automatic temperature regulation system to the target temperature (80–120℃ working range). The system enables rapid heating and uniform temperature distribution throughout the reaction process. The stirring system operates at 0–150 rpm (adjustable) to ensure thorough mixing and uniform microstructure.
Prepolymer Synthesis & Quality Monitoring
Monitor the prepolymer synthesis process. The two-step prepolymer process allows sufficient reaction between polyols and isocyanates, generating elastomers with uniform microstructure. Multi-point safety interlock system provides automatic warning and disposal for overpressure, overtemperature and stirring abnormal conditions.
Request a Customized Prepolymer Reactor Solution
Get a QuoteTechnical Specifications
Standard configuration parameters for the prepolymer synthesis reactor. Customizations including vessel capacity, dimensions, control cabinet color and PLC/HMI upgrade are available.
| Technical Parameter | HF-Premix |
|---|---|
| Vessel Capacity Options | 50L, 100L, 150L, 200L, 250L, 300L, 500L, custom volume supported |
| Vessel Dimensions | Φ400×400, Φ500×500, Φ600×500, Φ600×700, Φ700×700, Φ800×900, customizable |
| Working Temperature | 80–120℃ |
| Ultimate Vacuum Degree | 6×10²PaActual vacuum performance depends on onsite installation, piping layout and supporting vacuum components |
| Stirring Speed | 0–150rpm, adjustable |
| Stirring Motor Power | 0.55–2.2kW, varies by configuration |
| Electric Heating Power | 9–18kW, varies by configuration |
| Total Weight | Approx. 150–800kg, varies by configuration |
| Warranty | 1-year full machine warranty |
| Certifications | CE standard, EN 60204-1 electrical safety, ISO9001 quality system. View About Us for full details |
| Brand | Haifeng |
| Optional Feature | Customizable control cabinet color; optional PLC/HMI upgrade |
Key Features & Advantages
Engineered for uniformity, safety and reliability in polyurethane prepolymer synthesis.
Robust Structure & Long-Term Stability
Reactor vessel features high structural rigidity, maintaining stable shape under long-term high temperature and vacuum working conditions. Ensures lasting alignment accuracy of stirring system and stable performance throughout extended production cycles.
High Vacuum System for Bubble-Free Products
Optimized tank welding structure and precision sealing technology, combined with reliable dynamic sealing of the stirring shaft, maintain a long-lasting high vacuum environment. Effectively suppresses bubble generation, improves product compactness and reduces internal defects.
Precise Automatic Temperature Control + Optional PLC/HMI
Automatic temperature regulation system enables rapid heating and uniform temperature distribution throughout the reaction process. PLC/HMI control system available as optional upgrade, with efficient cooling solution for flexible process switching.
Uniform Product Structure & High Batch Consistency
Two-step prepolymer process allows sufficient reaction between polyols and isocyanates, generating elastomers with uniform microstructure. Finished prepolymer delivers excellent mechanical properties and highly repeatable batch quality.
Reliable Discharging & Easy Maintenance
Inner tank wall and stirring blades are specially polished. Optimized vessel bottom design and discharging valve layout minimize residual material, reduce cross-contamination between batches, and simplify cleaning and maintenance.
Multi-Point Safety Interlock for Compliant Operation
Integrates multi-point interlock protection logic with automatic warning and disposal functions for overpressure, overtemperature and stirring abnormal conditions. Complies with chemical production safety specifications and reduces manual operation risks.
Optimize Your Prepolymer Synthesis with High-Quality Reactor Solutions
Our engineering team specializes in polyurethane material production systems. We provide full Turnkey Projects from reaction to foaming. Contact us to discuss your specific capacity requirements, formulation needs, and facility conditions.
Application Scenarios
This professional prepolymer reactor is widely applied in polyurethane material synthesis and raw material pretreatment: Synthesis of TDI, MDI and NDI based polyurethane prepolymers; Dehydration and degassing pretreatment of polyols and other raw materials; Two-step prepolymer process for CPU elastomer production, separating pre-polymerization and chain extension reactions; Suitable for elastomer, coating, adhesive and sealant material production lines. Note: The two-step prepolymer process requires matching supporting peripheral equipment to achieve complete workflow; single reactor unit alone cannot fulfill the full-process requirement. We also provide full Turnkey Projects for complete polyurethane material production systems from reaction to foaming.
Ready to discuss your project?
Get a ProposalComplete Your Production Line
Integrate the product with our full range of auxiliary equipment for a turnkey polyurethane processing system.
