In today’s world where motorcycles and cars are increasingly digitized, controllers, as the core component of the “vehicle brain,” undertake key functions such as power management, drive control, and signal processing. The working environment is extremely harsh – external factors such as high temperature, humidity, oil pollution, vibration, electromagnetic interference, etc. can all cause electronic component failure. Therefore, selecting sealing materials with stable performance and high reliability is a key step in ensuring the long-term stable operation of the controller.
1、 The Importance of Sealing
Electronic controllers continuously generate heat during operation and are exposed to vibration and humid environments. Sealing materials not only provide insulation, waterproofing, moisture resistance, and shock protection, but also need to balance thermal conductivity and long-term reliability.
For the fields of motorcycles and automobiles, a highly fluid, easily permeable, and stable curing sealant is an ideal choice to ensure the performance of controllers.
2、 Glue requirements
In the sealing process of motorcycle and automotive controllers, customers have raised the following requirements:
one ️⃣ The operation time is about 1 hour, which is convenient for sealing, leveling, and defoaming;
two ️⃣ Colloids need to have excellent fluidity and permeability, and be able to fully fill small gaps and complex structures;
three ️⃣ After curing, it should maintain good flexibility and durability, be waterproof and moisture-proof for a long time, and ensure stable adhesion between the circuit board and the shell.
3、 Recommended product: PUR 1680 Quick Edition
PUR 1680 Quick Edition is a two-component solvent-free room temperature or heat cured polyurethane potting material designed specifically for electronic control modules, car control boxes, power modules, and other structural applications.
Product Features
The operable time is about 1 hour, meeting the medium speed production cycle;
Low viscosity flow system, easily penetrates the gaps between windings, pins, and components;
Excellent insulation and waterproof performance, effectively protecting circuit boards from moisture erosion;
High flexibility and aging resistance, resistant to thermal expansion, contraction, and vibration stress;
Environmentally friendly formula, low VOC, compliant with ROHS/REACH requirements;
Cost superior to epoxy system, high cost-effectiveness, and easy promotion.
4、 Typical application scenarios
Application scenarios of sealing adhesive
✅ Sealing of automotive ECU control module
✅ Sealing of motorcycle ignition controller
✅ Sealing of power module for electric scooter
✅ Control box, sensor, and wire harness terminal protection
PUR 1680 Quick Version has good fluidity during encapsulation, and can automatically fill the small gaps between the circuit board and components. After curing, it forms a dense and flexible protective layer, effectively preventing water vapor infiltration and mechanical impact. Even under temperature cycling conditions of -40 ℃~125 ℃, excellent electrical and structural stability can still be maintained.
In complex and ever-changing automotive and motorcycle environments, Elaplus PUR 1680 Rapid Edition provides an integrated solution for controller encapsulation with its high flow, fast curing, and aging resistance characteristics. It not only ensures the structural stability of the PCB board and housing, but also significantly improves the waterproof, shock resistant, and heat dissipation performance, providing a solid guarantee for the long-term reliable operation of the vehicle’s electronic system.
Tag: Motorcycle and Automotive Controller Encapsulation
