ABLESTIK 2248
Harmonization Code : 5906100000 | Adhesive tape of a width not exceeding 20cm
Main features
- Thixotropic Application Control
- 14.8 kV/mm Dielectric Strength
- 1-Hour Working Window
Product Description
LOCTITE® ABLESTIK 2248 BIPAX is a two-component, heat-cured epoxy staking compound supplied in a mixing-dispenser package. The tan, thixotropic system mixes at 100:19.4 resin-to-hardener by weight and is documented for bonding metals, glass, ceramics, and plastics. It combines toughness, impact resistance, thermal-shock resistance, and low permeability to gases and vapors with a two-hour pot life and a guideline cure schedule of 1 hour at 100°C. Typical cured properties include an operating-temperature range of -60 to 190°C, Shore D hardness of 87, tensile strength of 72.4 N/mm², and volume resistivity of 2.50 × 1015 ohm-cm at 25°C.
Key features
- Tough, thermally durable system: Documented for good toughness, impact resistance, thermal-shock resistance, and service from -60 to 190°C.
- Controlled thixotropic handling: Typical mixed viscosity is 10,000 mPa·s at 25°C with a two-hour pot life.
- Electrical insulation: Typical cured volume resistivity is 2.50 × 1015 ohm-cm at 25°C, with dielectric strength of 14.8 kV/mm.
Applications / Suitable for
- Staking applications
- Bonding metals, glass, ceramics, and plastics
- Assemblies exposed to thermal shock or elevated service temperatures
- Applications requiring low permeability to gases and vapors
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Mechanical Properties
Chemical Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
Typical mixed, handling, storage, and guideline cure information before final processing.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Technology | Epoxy | — | Two-component heat-cured staking compound |
| Appearance — mixed | Tan | — | Uniformly mixed BIPAX system |
| Appearance — resin | Light yellow liquid | — | LOCTITE ABLESTIK 2248-R SDS |
| Appearance — hardener | Amber to brown liquid | — | LOCTITE ABLESTIK 2248-H SDS |
| Mix ratio — resin:hardener | 100:19.4 | by weight | Documented BIPAX mix ratio |
| Mixed viscosity | 10,000 | mPa·s (cP) | Brookfield LV, spindle 4, 12 rpm at 25°C |
| Specific gravity — mixed | 1.2 | — | Typical mixed value |
| Specific gravity — resin | 1.3 | — | LOCTITE ABLESTIK 2248-R SDS |
| Specific gravity — hardener | 1.0 | — | LOCTITE ABLESTIK 2248-H SDS |
| Pot life | 2 | hours | Temperature and test mass not stated |
| Guideline cure schedule | 1 | hour | At 100°C |
| Application-dependent post-cure | 2 | hours | At 125°C when anticipated application temperatures exceed 125°C |
| Optimal storage | ≤27 | °C | TDS storage value; component SDSs specify storage at or below 25°C |
After-processing / final-state properties
Typical cured physical, thermal, electrical, outgassing, and bonded-joint properties. Values are reference data and are not product specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Operating-temperature range | -60 to 190 | °C | Documented product range |
| Hardness | 87 | Shore D | Cure condition and test method not stated |
| Glass-transition temperature | 109 | °C | Method and cure condition not stated |
| Coefficient of expansion | 50 | ppm/°C | Temperature range, method, and cure condition not stated |
| Heat-distortion temperature | 148 | °C | Method and cure condition not stated |
| Water absorption | 0.001 | % | After 24-hour immersion |
| Izod impact strength | 0.52 | ft-lb/in of notch | Test method and cure condition not stated |
| Elongation | 2 | % | Test method and cure condition not stated |
| Dielectric strength | 14.8 | kV/mm | Test method, specimen thickness, and cure condition not stated |
| Dielectric constant | 4.35 | — | At 1 kHz and 25°C |
| Dissipation factor | 0.02 | — | At 1 kHz and 25°C |
| Volume resistivity | 2.50 × 1015 | ohm-cm | At 25°C |
| Outgassing | Passes | — | ASTM E595-90 |
| Lap shear strength — aluminum to aluminum | 17.9 (2,600) | N/mm² (psi) | Surface preparation, bondline, cure condition, test method, and test temperature not stated |
| Tensile strength | 72.4 (10,500) | N/mm² (psi) | Test method and cure condition not stated |
