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Excellent abrasion resistance for demanding mechanical environments.
High tensile strength and elongation at break, ensuring robust performance under dynamic stress.
Good low-temperature flexibility down to –30 °C without significant loss of elasticity.
Outstanding oil and grease resistance, maintaining integrity in lubricated or hydrocarbon-exposed conditions.
Processable via standard thermoplastic methods including injection molding, extrusion, and blow molding.
Automotive interior trim components requiring soft-touch feel and durability.
Industrial hoses and fluid-conveyance tubing for hydraulic and pneumatic systems.
Protective overmolding for electronic connectors and tool handles.
Footwear midsoles and outsoles where resilience and wear resistance are critical.
Medical device tubing and non-implantable components compliant with ISO 10993-5 cytotoxicity requirements.
| Chemical Type | Thermoplastic Polyurethane (TPU), Polyester-based |
| Product Form | Pellets |
| Appearance | Off-white to light beige, free-flowing granules |
| Shore A Hardness | 45 ± 2 |
| Melt Flow Index (190 °C / 2.16 kg) | 8–10 g/10 min |
| Density | 1.18–1.20 g/cm³ |
| Moisture Content (as received) | ≤ 0.05 wt% |
| Processing Temperature Range | 170–210 °C |
Q1: What are the key processing advantages of Merquinsa 45-40/8 compared to conventional TPUs?
A: Merquinsa 45-40/8 offers enhanced melt stability and lower melt viscosity, enabling smoother extrusion and injection molding at reduced processing temperatures. Its balanced hardness and elasticity support excellent flow into complex geometries while minimizing post-molding shrinkage and warpage.
Q2: Is this grade suitable for applications requiring repeated flexing or dynamic mechanical stress?
A: Yes — Merquinsa 45-40/8 is specifically engineered for high resilience and fatigue resistance. Its optimized phase separation between hard and soft segments delivers consistent performance under cyclic loading, making it well-suited for flexible hoses, wearable components, and dynamic seals.
Q3: How does Merquinsa 45-40/8 perform in contact with common plasticizers or other polymer blends?
A: It exhibits good compatibility with many thermoplastic elastomers and engineering resins, including certain grades of PVC, ABS, and PC. When blended, it typically enhances toughness and low-temperature flexibility without significant phase separation — though compatibility should always be verified through small-scale trials under intended processing conditions.
Q4: Can this TPU be used in applications exposed to outdoor weathering or UV light?
A: While Merquinsa 45-40/8 provides inherent resistance to hydrolysis and moderate thermal stability, it is not inherently UV-stabilized. For long-term outdoor use, incorporation of appropriate UV absorbers and HALS stabilizers is recommended to maintain mechanical integrity and surface appearance over time.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
