Oil pressure sensors are usually installed in the engine lubrication system and are exposed to high temperatures, strong vibrations, oil and fuel vapors for a long time. They also need to withstand harsh working conditions such as cold and hot shocks, refrigerant immersion, salt spray, and humid heat.
Therefore, materials used for packaging electronic components inside sensors must meet the following key performance requirements:
Excellent oil resistance and chemical stability
Can resist long-term erosion from fully synthetic engine oil, mineral engine oil, transmission fluid, gasoline vapor, and common refrigerants.
Wide temperature adaptation range
The engine compartment environment temperature fluctuates greatly, requiring materials to have long-term temperature resistance of -40 ℃ to 150 ℃ and be able to withstand transient high temperatures of the engine.
Reliable mechanical and insulation performance
Including anti vibration, anti cracking, and stable electrical insulation to ensure the long-term stability of sensor output signals.
Low water absorption and sealing performance
Long term exposure to humid and hot environments requires materials to have excellent moisture resistance to avoid insulation performance degradation and metal pin corrosion.
EP 1710A/B two-component epoxy potting material
EP 1710A/B is a two-component solvent-free room temperature curing epoxy potting material developed specifically for packaging automotive electronics, motors, power tools, and electrical instruments. Its performance highly meets the requirements for the use of oil pressure sensors and is the preferred packaging solution for this type of product.
Main performance advantages
- Excellent environmental and chemical tolerance
It has high stability for engine oil, refrigerant, and hydraulic oil, and is not easily swollen or chemically decomposed.
Long term oil immersion does not affect the structural strength and electrical performance of the material. - Wide temperature range and high thermal stability
Working temperature: -40 ℃~150 ℃
High temperature tolerance can reach 150 ℃~180 ℃
Stable modulus, high thermal oxidation decomposition temperature, suitable for high-temperature environments in engine compartments. - Excellent mechanical and structural performance
High adhesion, with good adhesion to common sensor materials such as metal, ceramic, PA, PBT, PPS, etc.
Low CTE (coefficient of linear expansion) can significantly reduce stress concentration caused by thermal cycling and minimize the risk of fatigue in solder joints and pins.
Good resistance to cracking and mechanical impact, suitable for high vibration environments. - High thermal conductivity – ensuring long-term stability of the sensor
Adding efficient thermal conductive fillers to the system, with excellent thermal conductivity, effectively conducts the heat generated by the operation of the chip and sensitive components to the casing.
By conducting heat to achieve temperature uniformity, the stability and lifespan of sensor signals can be improved. - Excellent electrical insulation and protection capabilities
High volume resistance and excellent dielectric strength.
Extremely low water absorption rate, with excellent waterproof, moisture-proof, and oil vapor penetration resistance. - Process friendliness
Two component, solvent-free, safe and environmentally friendly.
It can be cured at room temperature and also supports heating to accelerate curing.
Moderate viscosity, suitable for sealing complex small cavities, with good fluidity.
EP 1710A/B is a professional epoxy potting material designed for high demand environments in automobiles, especially suitable for packaging oil pressure sensors.
It ensures long-term stable operation of sensors under extreme working conditions through the following characteristics:
High adhesive strength
Low coefficient of expansion
high thermal conductivity
Resistant to engine oil/refrigerant/high temperature
Excellent electrical insulation
Moisture proof, waterproof, and vibration resistant
If you are looking for a reliable automotive sensor packaging solution, EP 1710A/B will be a trusted professional recommendation.
Tags: Sensor Packaging · Pressure Sensor Encapsulation · Oil Pressure Sensor Encapsulation · Epoxy Encapsulation Adhesive
