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日本語 TPU Reaction Pellets Introduction
TPU (Thermoplastic Polyurethane Elastomer) is a high-performance polymer that combines the properties of both rubber and plastic. It is widely used in applications requiring soft touch, abrasion resistance, and oil resistance. Through reactive extrusion technology, one-step polymerization and functional customization can be achieved, making it suitable for high-end product development.
Recyclability: Thermally reprocessable and re-pelletizable.
Material Features
- Excellent elasticity and rebound resilience
- Outstanding resistance to abrasion, oil, and low temperatures
- Formulation-dependent in hardness, transparency, and color (tailored performance in specific applications)
- Good adhesion to a wide range of materials
- Suitable for medical, industrial, and multi-purpose applications
Application
- Cable sheathing, mobile phone cases, athletic shoe soles
- Medical tubing, transparent films
- Automotive sealing components, vibration-damping parts
- Industrial conveyor belts, abrasion-resistant hoses
Recommended Equipment & Processing Notes
- Isocyanate-containing components must be fed in a sealed and precisely metered system
- Processing temperature should be maintained between 170–230°C to avoid thermal degradation
- Equipment should be designed for low material retention and easy cleaning
- TPU is moisture-sensitive; pre-drying is recommended when necessary
Frequently Asked Questions (FAQ)
Q: Can TPU be polymerized and pelletized in a single reactive extrusion step?
A: Yes, TPU can be synthesized and pelletized through a twin-screw reactive extrusion system. This one-step process ensures high reaction efficiency and precise compositional control.
Q: Is TPU prone to degradation during extrusion?
A: TPU is thermally sensitive. Proper control of processing temperature and shear rate minimizes degradation. Integration of a devolatilization section is recommended for improved thermal stability.
