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Excellent abrasion resistance for extended service life in demanding mechanical environments.
High tensile strength and elongation at break, enabling superior elasticity and recovery performance.
Good low-temperature flexibility down to –30 °C without significant stiffening or cracking.
Outstanding oil, grease, and hydrocarbon resistance compared to conventional thermoplastics.
Readily processable via extrusion, injection molding, and calendering with minimal thermal degradation.
Industrial hoses and pneumatic tubing requiring high flex fatigue resistance.
Roller covers and conveyor belts for material handling systems.
Seals, gaskets, and dynamic sealing components in hydraulic and pneumatic equipment.
Protective coatings and linings for abrasive or chemically exposed surfaces.
High-performance footwear midsoles and outsoles demanding rebound and durability.
| 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 (230 °C / 2.16 kg, g/10 min) | 10–14 |
| Hardness (Shore A) | 68 ± 3 |
| Tensile Strength (MPa) | 32–38 |
| Elongation at Break (%) | 550–620 |
Q1: What is the primary processing method recommended for Merrell TPUH680?
A: Merrell TPUH680 is specifically formulated for melt processing methods including extrusion, injection molding, and blow molding. It exhibits excellent melt stability and low viscosity at typical processing temperatures, enabling smooth flow and good surface finish in finished parts.
Q2: Is Merrell TPUH680 suitable for applications requiring flexibility and abrasion resistance?
A: Yes — as a thermoplastic polyurethane elastomer, TPUH680 delivers a balanced combination of high elasticity, excellent tensile strength, and superior resistance to abrasion, tearing, and repeated flexing. It is commonly selected for dynamic components such as seals, gaskets, and protective overmolds where mechanical durability is critical.
Q3: Can Merrell TPUH680 be blended with other polymers or compounded with additives?
A: Merrell TPUH680 demonstrates good compatibility with many engineering thermoplastics and can be compounded with standard stabilizers, pigments, and reinforcing fillers. Compatibility with specific polymers should be verified through small-scale trials, particularly when targeting phase morphology or long-term property retention.
Q4: Does Merrell TPUH680 require drying before processing?
A: Yes — like most hygroscopic TPU grades, Merrell TPUH680 must be thoroughly dried prior to melt processing. Recommended drying conditions are typically 80–90 °C for 2–4 hours using desiccant-assisted air, with moisture content maintained below 0.05% to prevent hydrolysis and surface defects.
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E-mail: wangxingqiang@ericwchem.com
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