United Resin has a number of well-established epoxy systems for potting and encapsulating batteries, battery components, and electronic part casting. Epoxy resin will keep your batteries secure from damage caused by shock, moisture, vibration, chemicals, and many other elements. United Resin has the material and expertise when selecting epoxy material for your battery applications. We have materials ready for most applications and can develop custom systems to meet all your requirements. Contact one of our epoxy experts to discuss your requirements. United Resin will work with you to tailor a product to fit your needs. Our goal is to find the right material for your applications.
Our formulated epoxy systems excel in applications where an industrial adhesive or potting, encapsulating, and casting material is required, including for large or small batteries and battery packs. Industries range from lithium battery packs, EV batteries, power tool batteries, garden equipment tool batteries, marine components, military/defense applications, GPS tracking components, process control parts, and more. United Resin has been supplying the automotive industry for over 50 years. We have developed lightweight epoxies for the Electric Vehicle (EV) and Electric Vehicle (EV) battery markets. United Resin has several established systems to meet the needs in EV manufacturing. All our materials are non-hazardous, REACH/RoHS compliant, and contain no solvents.
United Resin has UL Approved (HB and V-O), lightweight, high thermal, thermally conductive, and heat resistant materials with low exotherm properties. Epoxy is resistant to chemicals, acids, fuels, solvents, moisture, and salts, making it an excellent choice for your potting, encapsulation, and EV component needs. This allows designers several choices when selecting an epoxy material from United Resin. We offer a wide range of hardness and viscosities of epoxies to meet your needs.
Battery Potting & Encapsulating Epoxy Resin Systems for EV Batteries & EV Components
EL-CAST with 641 Hardener
El-Cast with 641 Hardener is a medium viscosity potting and encapsulation resin. It has excellent bonding properties to metals, plastics, and ceramics. With good air release, the cured part will have a gloss finish. Maximum use temperature of this system is 250 F.
Key properties
| UL 94 Flame Class | HB |
|---|---|
| Color: | Black or White |
| Shore "D" Hardness ASTM D2240: | 85 |
| Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D257 | 1.3 x 1015 |
| Dielectric Constant, Test frequency: 1 MHz per ASTM D150 | 4.39 |
| Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149 | 409 |
| Dissipation Factor, Test frequency: 1 MHZ per ASTM D150 | .0213 |
| Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C177 | 6.50 |
Other Applications
Batteries for lawn and garden equipment, pulse transformers, magnetic components, noise interference filters, marine sonar devices, and many other potting, casting or encapsulating applications.
EL-CAST VFR with 117 Hardener
El-Cast VFR with 117 Hardener is a 100% epoxy system. This system is a softer, flexible, epoxy system. This system’s low viscosity and excellent air release allows it to cure to a high gloss finish. This system is UL 94 V-O approved.
Key properties
| UL 94 Flame Class | V-O |
|---|---|
| Color | Black |
| Shore "A" Hardness ASTM D2240: | 75 |
| Viscosity | Mixed: 7,000 cps |
| Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D257 | 2.7 x 1015 |
| Dielectric Constant, Test frequency: 1 MHz per ASTM D150 | 4.22 |
| Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149 | 496 |
| Dissipation Factor, Test frequency: 1 MHZ per ASTM D150 | 0.0187 |
| Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C177 | 6.25 |
Other Applications
Delay lines, pulse transformers, alarm systems, filters, and magnetic components.
EL-CAST VFR with 118 Hardener
El-Cast VFR with 118 hardener is a filled two-component epoxy, that is UL approved for 94 V-O. The VFR system has excellent air release and cures to a high gloss finish. Heat resistant to 400°F.
Key Properties
| UL 94 Flame Class | V-O |
|---|---|
| Color | Black |
| Shore "A" Hardness ASTM D2240: | 85 |
| Viscosity: | Mixed 6000 cps |
| Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D257 | 4.4 x 1015 |
| Dielectric Constant, Test frequency: 1 MHz per ASTM D150 | 4.28 |
| Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149 | 499 |
| Dissipation Factor, Test frequency: 1 MHZ per ASTM D150 | 0.0181 |
| Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C177 | 6.65 |
Other Applications: Delay lines, pulse transformers, alarm systems, filters, magnetic components, and all applications where UL testing is required.
EL-CAST 760 with 4123
El-Cast 760 with 4123 is a filled two-component epoxy which features safe handling properties and high deflection temperatures with an overnight cure. It has excellent thermal conductivity and good flow qualities, making this product a very versatile system.
| Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D257 | 0.8 x 1016 |
| Dielectric Constant, Test frequency: 1 MHz per ASTM D150 | 5.17 |
| Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149 | 432 |
| Dissipation Factor, Test frequency: 1 MHZ per ASTM D150 | 0.0212 |
| Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C177 | 12.25 |
Call us to discuss these systems or to discuss a new system to meet your specific requirements.