LOCTITE EA E-40EXP
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Self-Leveling Horizontal Potting
- Controlled 2:1 Metered Mixing
- Room-Temperature Potting Cure
Product Description
LOCTITE EA E-40EXP is a two-component, self-leveling epoxy potting compound for electric motors and wire-conduit isolation. The white resin and black amine hardener mix at 2:1 by volume to form a black material that flows through horizontal cavities and cures at room temperature. Typical mixed-material values include a gel time below 45 minutes at 22 deg C and a tack-free time of 75 minutes or less. After seven days at 25 deg C, the cured epoxy reaches greater than 80 Shore D hardness and provides 38 kV/mm dielectric breakdown strength.
Key features
- Self-leveling cavity fill: The mixed epoxy flows into horizontal voids and supports bottom-up potting.
- Controlled 2:1 mixing: Resin and hardener use a 2:1 volume ratio for cartridge or bulk-metered dispensing.
- Room-temperature cure: The system cures at room temperature, with heat acceleration up to 93 deg C.
Applications
Applications include potting wire conduits and electrical motor areas where a self-leveling two-component epoxy is specified.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Thermal Properties
Additional Information
As-supplied properties
Resin, hardener and mixed-system values before cure.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Mix ratio by volume | 2:1 | Resin to hardener | |
| Mix ratio by weight | 100:45.9 | Resin to hardener | |
| Resin viscosity | 20,800 | mPa s | Brookfield DV-II, spindle 14, 10 rpm, 25 deg C |
| Hardener viscosity | 6,400 | mPa s | Brookfield RVT, spindle 14, 10 rpm, 25 deg C |
| Mixed specific gravity | 1.2 | At 25 deg C | |
| Tack-free time | 75 or less | minutes | Mixed material |
| Gel time | Less than 45 | minutes | At 22 deg C |
| Optimal storage | 8 to 21 | deg C | Unopened container in a dry location |
Final-state properties
Typical cured-material values after 7 days at 25 deg C unless otherwise stated.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shore hardness | Greater than 80 | Shore D | ISO 868; cured 7 days at 25 deg C |
| Glass transition temperature | 52 | deg C | ASTM E1640; cured 7 days at 25 deg C |
| Coefficient of thermal expansion | 26 x 10^-6 pre-Tg; 151 x 10^-6 post-Tg | K^-1 | ISO 11359-1 |
| Tensile strength | 66 | N/mm^2 | ISO 527-2; cured 7 days at 25 deg C |
| Tensile modulus | 2,750 | N/mm^2 | ISO 527-2; cured 7 days at 25 deg C |
| Elongation | 4 | % | ISO 527-2; cured 7 days at 25 deg C |
| Thermal conductivity | 0.25 | W/(m K) | ASTM E1530; cured 7 days at 25 deg C |
| Dielectric breakdown strength | 38 | kV/mm | IEC 60243-1; cured 7 days at 25 deg C |
