3M 8681HS
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Polyurethane Leading-Edge Erosion Protection
- Conformable Curved-Surface Coverage
- High-Shear Acrylic Attachment
Product Description
3M Polyurethane Protective Tape 8681HS is a leading-edge erosion-protection tape built with an abrasion-resistant polyurethane elastomer backing, a high-shear pressure-sensitive acrylic adhesive, and an easy-release plastic liner. The polyurethane resists puncture, tearing, abrasion, erosion, and ultraviolet exposure while remaining conformable over curved surfaces. Typical data include 500% elongation at break, 148 N/100 mm peel adhesion to bare aluminum at 21 deg C, and a maximum service temperature of 82 deg C. The tape can be painted or applied over painted surfaces and is designed for protective coverage on exposed leading-edge surfaces.
Key features
- Erosion-resistant polyurethane: Tough polyurethane construction resists puncture, tearing, abrasion, and erosion on exposed leading edges.
- Conformable curved-surface application: The tape follows curved surfaces for protective coverage on rotor blades and other leading-edge geometries.
- High-shear acrylic attachment: A long-aging, solvent-resistant acrylic adhesive provides pressure-sensitive attachment for demanding surface-protection use.
Applications
Applications include rotor-blade, aircraft, and industrial leading-edge protection in areas exposed to abrasion, erosion, rain, or sand.
TDS, SDS & Technical Documents
Technical Specifications
Mechanical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Polyurethane film thickness | 0.30 | mm | Approximate applied film thickness; typical |
| Acrylic adhesive thickness | 0.06 | mm | Approximate applied adhesive thickness; typical |
| Liner | Easy-release plastic | Skip-slit or non-skip-slit configurations | |
| Standard roll length | 32.9 | m | 36 yd; typical |
| Shelf life | 2 | years | From date of manufacture or as expressly certified by 3M |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Elongation at break | 500 | % | ASTM D882; typical |
| Peel adhesion to bare aluminum | 148 | N/100 mm | ASTM D3330; 21 deg C; typical |
| Peel adhesion to ABS plastic | 60 | N/100 mm | ASTM D3330; 21 deg C; typical |
| Maximum service temperature | 82 | deg C | Typical |
