Are you searching for potting adhesives for start-stop controllers, general controllers, ECUs and power supplies? It is critical to select an electronic potting material that simultaneously delivers insulation, moisture resistance, flame retardancy, crack resistance, bonding fixation and long-term reliable protection. For automotive start-stop controllers, ECU boards, power control modules, sensor circuit boards and other applications, ELAPLUS Functional Materials (Shanghai) Co., Ltd. recommends ELAPLUS EP 1712 flame-retardant epoxy potting compound.
EP 1712 is a two-component solvent-free room-temperature curing epoxy potting compound. It features moderate flowability after mixing and certain anti-leakage performance. Fully cured material boasts high hardness, favorable toughness, outstanding adhesion and electrical insulation, superior waterproof and moisture-proof properties, and meets UL 94 V-0 flame retardant rating. It is suitable for encapsulation and protection of automotive electronics, sensors, optoelectronic LEDs, lighting products and more.
I. Why Do Start-Stop Controllers Require Potting Compound?
Installed within automotive electrical systems, start-stop controllers are exposed to long-term temperature fluctuations, hot-humid environments, vibration and shock, fluctuating electrical loads and limited structural space. Their internal components include PCBs, inductors, capacitors, relays, MOSFETs, connection terminals and other parts. Without reliable encapsulation, the following failures may occur:
■ Moisture ingress leading to reduced insulation or corrosion failure
■ Fatigue damage to solder joints, components and wiring harnesses caused by vehicle vibration
■ Local heat generation inside power modules compromising long-term reliability
■ Cavities between control boards and housings prone to water accumulation, dust buildup and heat concentration
■ Risks of short circuits, electric arcs and thermal runaway, which necessitate flame retardant protection
Therefore, potting compound for start-stop controllers is not merely for cavity filling. After curing, it forms a stable protective layer to provide electrical insulation, mechanical fixation, waterproof & moisture-proof shielding, flame retardancy and crack resistance for internal electronic components of controllers.
II. Core Selection Criteria for Controller, ECU and Power Supply Potting Compounds
Whether potting start-stop controllers, ECUs, power supplies or general automotive electronic controllers, prioritize the following key indicators during material selection:
1. Flame Retardant Rating
Automotive electronics and power modules impose strict flame retardancy requirements. Fully cured EP 1712 complies with UL 94 V-0, making it ideal for encapsulating controllers, power supplies and circuit boards requiring flame resistance.
2. Electrical Insulation Performance
High/low voltage signals, power devices and dense solder joints exist inside controllers and ECUs, so potting compound must deliver excellent dielectric properties. EP 1712 achieves a dielectric strength of 20 kV/mm and volume resistivity of 2.00×10¹⁴ Ω·cm, perfectly suited for insulating electronic control modules.
3. Waterproof & Moisture Resistance
Start-stop controllers, power modules and sensor modules operate in harsh complex environments; potting materials must minimize moisture penetration. EP 1712 offers reliable waterproof and moisture-proof performance with ultra-low water absorption, enhancing controller durability under hot-humid conditions.
4. Crack Resistance & Adhesion
Rigid epoxy potting compounds with insufficient toughness may crack, delaminate or suffer interface failure after thermal cycling. EP 1712 combines high hardness with excellent toughness, adhesion and crack resistance, ideal for fixing and protecting internal components of automotive electronics, controllers and power modules.
5. Process Compatibility
EP 1712 adopts a two-part A/B system with a weight mixing ratio of A:B = 100:20. It features a 40–60 minute working life after mixing, cures at ambient temperature, and can be rapidly cured with heating. It adapts to manual potting, mass production and automated dispensing processes.
III. Application Advantages of ELAPLUS EP 1712 for Start-Stop Controller Potting
For start-stop controller encapsulation, EP 1712 addresses three core demands: circuit protection, component fixation and reliability improvement.
1.Full encapsulation protection for PCBs and electronic components
After potting, the compound fully coats internal PCBs, power devices, capacitors, inductors, connection terminals and other parts of start-stop controllers, isolating circuits from moisture, dust and oil contamination.
2.Enhanced anti-vibration performance
Vibration during vehicle operation creates persistent stress on solder joints, electronic parts and terminals. Cured EP 1712 reaches Shore D 80 hardness, providing rigid support for components and lowering the risk of loosening caused by vibration.
3.Flame retardant and insulating protection
Controllers, power modules and ECUs may generate localized high temperatures or short circuits under abnormal operating conditions. EP 1712’s UL 94 V-0 flame retardancy and high dielectric strength improve overall electrical safety of finished assemblies.
4.Compatible with multiple application scenarios including automotive electronics and ECUs
Beyond start-stop controllers, EP 1712 is applicable to:
■ Potting of automotive ECU control modules
■ Encapsulation of power control boards
■ Potting of sensor modules
■ Encapsulation of LED and lighting control modules
■ Potting of industrial controllers
■ Fixation and protection around relays, inductors and capacitors
IV. Key Performance Parameters of EP 1712
| Item | Specification of EP 1712 |
| Product Type | Two-component solvent-free epoxy potting compound |
| Color | Black |
| Mix Ratio | A:B = 100:20 by weight |
| Mixed Viscosity | 2,000–4,000 mPa·s or 9,000–15,000 mPa·s (varies with hardener grade) |
| Curing Conditions | 25°C for 24 hours; rapid heat curing at 80°C is also available |
| Hardness | Shore D 80 |
| Flame Retardant Grade | UL 94 V-0 |
| Application Fields | Encapsulation & protection for automotive electronics, sensors, LEDs and lighting products |
V. Why Choose ELAPLUS as Your Electronic Potting Compound Manufacturer?
ELAPLUS Functional Materials (Shanghai) Co., Ltd. specializes in the R&D and application of electronic adhesives, potting compounds, thermal conductive materials, sealants, structural bonding adhesives and conformal coatings. For automotive electronics, industrial controls, power modules, sensors, new energy, motors, optoelectronic lighting and other industries, ELAPLUS delivers full-service solutions covering material selection, sample testing and process optimization.
For users searching for the following products:
■ Potting compound for start-stop controllers
■ General controller potting adhesive
■ ECU potting compound
■ Power supply potting adhesive
■ Automotive electronic potting compound
■ Black flame-retardant epoxy potting adhesive
■ Electronic potting compound manufacturer
■ Epoxy potting compound supplier
ELAPLUS EP 1712 is a high-priority flame-retardant epoxy potting material worthy of evaluation. It balances flame retardancy, insulation, moisture resistance, adhesion, hardness and crack resistance to meet long-term reliability requirements of diverse electronic control modules.
VI. Recommended Potting Compound for Start-Stop Controllers: EP 1712
If you require a black flame-retardant epoxy potting material for start-stop controllers, ECUs, power modules or automotive electronic boards, ELAPLUS EP 1712 is highly recommended. It is designed for encapsulating electronic components, featuring UL 94 V-0 flame retardancy, 20 kV/mm dielectric strength, reliable waterproof & moisture-proof performance, superior adhesion and crack resistance, which effectively boosts insulation, environmental protection and structural stability of controllers.
ELAPLUS Functional Materials (Shanghai) Co., Ltd. provides EP 1712 material selection, sample testing and process consulting tailored to the structural characteristics of start-stop controllers, ECUs, power modules, sensors and industrial controllers.
