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Excellent abrasion resistance for demanding mechanical environments.
Outstanding low-temperature flexibility down to –40 °C.
Good oil and grease resistance suitable for industrial contact applications.
High tensile strength and elongation at break for dynamic part performance.
Easy processability via injection molding, extrusion, and blow molding.
Automotive interior trim components including door panels and instrument bezels.
Industrial hoses and pneumatic tubing requiring flex fatigue resistance.
Consumer electronics protective casings and wearable device bands.
Footwear midsoles and outsoles demanding rebound and durability.
Medical-grade non-implantable tubing and ergonomic grips.
| Chemical Type | Aliphatic polyester-based thermoplastic polyurethane |
| Product Form | Pellets |
| Appearance | Off-white to light amber translucent granules |
| Density (g/cm³) | 1.18–1.22 |
| Melt Flow Index (210 °C/5 kg, g/10 min) | 10–14 |
| Hardness (Shore A) | 85 ± 2 |
| Tensile Strength (MPa) | 32–38 |
| Elongation at Break (%) | 550–620 |
Q1: What are the key processing advantages of HF-3685AU compared to conventional TPU grades?
A: HF-3685AU is engineered for enhanced melt stability and reduced viscosity at processing temperatures, enabling smoother extrusion and injection molding with lower energy input. Its optimized thermal profile supports consistent flow in thin-wall and complex geometries without premature degradation.
Q2: Is HF-3685AU suitable for applications requiring high abrasion resistance and flexibility at low temperatures?
A: Yes — HF-3685AU delivers excellent dynamic mechanical performance, maintaining elasticity and tear strength down to -30 °C while offering superior resistance to wear, scuffing, and repeated flexing, making it well-suited for demanding automotive interior trims, industrial hoses, and premium footwear components.
Q3: Can HF-3685AU be blended or co-processed with other thermoplastics such as PC or ABS?
A: HF-3685AU demonstrates good compatibility with several engineering thermoplastics, including polycarbonate and ABS, especially when used with appropriate compatibilizers or in controlled blending ratios. Successful alloy formulations have been reported for improved impact performance and surface aesthetics in multi-material applications.
Q4: Does HF-3685AU require special drying prior to processing?
A: Yes — like most hygroscopic TPU elastomers, HF-3685AU must be thoroughly dried before processing to prevent hydrolysis-related defects. Recommended drying conditions are typically 80–90 °C for 2–4 hours using dehumidifying dryers, with moisture content maintained below 0.05% for optimal results.
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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
