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Excellent abrasion resistance for extended service life in demanding mechanical environments.
Outstanding low-temperature flexibility down to –40 °C without significant loss of elasticity.
Good oil and grease resistance, maintaining dimensional stability in contact with hydrocarbon-based lubricants.
High tensile strength and elongation at break, enabling reliable performance under dynamic stress.
Process-friendly melt flow behavior suitable for extrusion, injection molding, and calendering.
Automotive interior trim components including instrument panel skins and door armrests.
Industrial hoses and pneumatic tubing requiring flexibility and pressure resilience.
Wear-resistant conveyor belts and modular belt links for food and packaging lines.
Protective covers and gaskets for electronic enclosures and medical device housings.
High-performance footwear midsoles and outsoles demanding rebound and durability.
| Chemical Type | Thermoplastic Polyurethane (Aliphatic Polyester-based) |
| Product Form | Pellets |
| Appearance | Off-white to light beige, free-flowing granules |
| Density (g/cm³, 23 °C) | 1.18–1.22 |
| Melt Flow Index (g/10 min, 210 °C/5 kg) | 10–14 |
| Hardness (Shore A) | 90–93 |
| Tensile Strength (MPa) | ≥35 |
| Elongation at Break (%) | ≥450 |
Q1: What are the primary processing methods suitable for HF-4390A?
A: HF-4390A is designed for melt-processing techniques including extrusion, injection molding, and blow molding. Its balanced melt viscosity and thermal stability support consistent flow and good surface finish across these methods.
Q2: How does HF-4390A perform in low-temperature applications?
A: This grade exhibits excellent low-temperature flexibility and impact resistance, maintaining elastomeric performance down to approximately –30 °C without significant stiffening or brittleness.
Q3: Is HF-4390A compatible with common thermoplastic substrates for co-extrusion or overmolding?
A: Yes — HF-4390A demonstrates good interfacial adhesion with polypropylene (PP), ABS, and polycarbonate (PC) when processed under optimized temperature and residence time conditions.
Q4: Does HF-4390A require drying before processing?
A: Yes — like most TPU grades, HF-4390A is hygroscopic and should be dried to a moisture content below 0.05% prior to melt processing, typically using desiccant dryers at 70–80 °C for 3–4 hours.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
