Excellent soft-touch feel with balanced hardness (Shore A 90)
Good processability via injection molding and extrusion
Enhanced thermal stability for consistent performance during high-speed processing
Low compression set for reliable sealing and grip retention
Compatible with polypropylene (PP) and polyethylene (PE) substrates for overmolding
Automotive interior trim components (e.g., gear knobs, armrest covers)
Consumer electronics protective cases and soft-grip handles
Household appliance grips and control panels
Medical device housings requiring skin-safe, non-PVC elastomeric properties
Industrial tool overmolded grips for improved ergonomics and slip resistance
| Chemical Type | Thermoplastic Elastomer (TPE), SEBS-based |
| Product Form | Pellets |
| Appearance | Translucent beige granules |
| Hardness (Shore A) | 90 ± 3 |
| Melt Flow Rate (200°C/5 kg) | 12–18 g/10 min |
| Density | 0.99–1.01 g/cm³ |
| Tensile Strength | 8–10 MPa |
| Elongation at Break | 350–420 % |
Q1: What is the primary function of SK 1090B/N TPE in thermoplastic elastomer formulations?
A: SK 1090B/N TPE functions as a high-performance processing aid and viscosity modifier, enhancing melt flow, improving surface finish, and facilitating dispersion of fillers and additives in TPE compounds—particularly in SEBS- and TPE-S-based systems.
Q2: Is SK 1090B/N TPE compatible with common polymer matrices such as PP, PE, or thermoplastic vulcanizates (TPVs)?
A: Yes—it demonstrates good compatibility with polyolefin-based TPEs, including PP/EPDM TPVs and SEBS/PP blends. Compatibility should be verified experimentally in final formulations due to sensitivity to base resin polarity and molecular weight distribution.
Q3: How does SK 1090B/N TPE affect the mechanical properties of finished TPE parts?
A: When used within recommended dosage ranges, it typically maintains or slightly enhances tensile strength and elongation at break while significantly improving processability. Over-addition may reduce hardness or modulus, so optimization is advised for each application.
Q4: What are the recommended handling and storage conditions for SK 1090B/N TPE?
A: Store in original sealed packaging at temperatures between 5–30 °C, away from direct sunlight and moisture. Avoid prolonged exposure to high humidity or elevated temperatures prior to use, as this may affect free-flowing behavior during feeding.
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