3M TE031
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- 30-Second Handling Strength
- Two-Minute Assembly Window
- Flexible Plastic Bonding
Product Description
3M Scotch-Weld PUR Adhesive TE031 is a one-part, warm-applied polyurethane reactive adhesive for fast plastic assembly. The 100% solids material is applied at 121 deg C, provides a typical two-minute open time, and reaches handling strength in about 30 seconds under the stated test definition. Moisture cure builds a flexible bond, with strong peel results on polystyrene, acrylic, polycarbonate, PVC, and fiber-reinforced plastic. Moisture must reach the bondline: do not use TE031 for metal-to-metal, glass-to-glass, or metal-to-glass joints, and avoid untreated polyolefins. The extrudable format is suitable for cartridge or bulk PUR dispensing equipment.
Key features
- Fast handling strength: Reaches the stated 34 kPa handling-strength threshold in about 30 seconds at room temperature.
- Two-minute assembly window: Provides a defined open time for joining and fixing parts after warm application.
- Flexible plastic bonding: A typical 725% cured elongation allows the adhesive layer to deform before breaking.
Applications
Applications include bonding polystyrene, acrylic, polycarbonate, PVC, wood, and fiber-reinforced plastic where moisture reaches the bondline; exclude untreated polyolefins and metal-to-metal, glass-to-glass, or metal-to-glass joints.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Additional Information
As-supplied / before-processing properties
Open and handling times are typical and vary with adhesive temperature and application conditions.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | White to off-white | Solid state | |
| Viscosity | 13,000 | cP | 121 deg C; Brookfield Thermosel, spindle 27 |
| Molten density | 1.04 | g/cm^3 | Typical |
| Open time | 2 | minutes | 3.2 mm bead on a non-metallic surface; room-temperature environment |
| Time to handling strength | 30 | seconds | Time to support a 34 kPa tensile load; room-temperature environment |
| Application temperature | 121 | deg C | Warm-applied adhesive |
After-processing / final-state properties
Mechanical and peel values are typical for the stated specimens, dwell, temperature, and test configuration.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore D hardness | 50 | ASTM D2240; cured material at 23 deg C | |
| Modulus | 39 | MPa | ASTM D638 / ISO 527; 7 d at 23 deg C; 0.3 to 0.4 mm film |
| Elongation at break | 725 | % | ASTM D638 / ISO 527; 7 d at 23 deg C; 0.3 to 0.4 mm film |
| Tensile strength at break | 27 | MPa | ASTM D638 / ISO 527; 7 d at 23 deg C; 0.3 to 0.4 mm film |
| 180 deg peel adhesion | 114 | N/cm | Polystyrene; 168 h dwell at 25 deg C; 51 mm/min |
| 180 deg peel adhesion | 135 | N/cm | Acrylic; 168 h dwell at 25 deg C; 51 mm/min |
