In the fields of industrial automation and precision measurement, displacement sensors are widely used as core sensing components in high-precision control systems such as mechanical equipment, automotive manufacturing, aerospace, etc. To ensure its stable operation in complex environments, encapsulation protection has become an indispensable process step. This article will take the practical application of a displacement sensor manufacturer as an example to share how to successfully achieve transparent, low stress, high adhesion, high temperature resistance, moisture and waterproof packaging effects by using EP 1710 two-component epoxy sealant.
Sealing of distance sensor
Industry pain point: Failure risk of displacement sensors under extreme working conditions
In scenarios such as automotive engine compartments and industrial automation equipment, displacement sensors have long faced three major challenges:
High temperature deformation: 150 ℃+environment causes colloidal expansion, squeezing sensitive components and causing signal drift;
Metal interface cracking: Colloids and shells peel off during cold and hot cycles, and moisture invades and damages the circuit;
Internal stress damage: Curing shrinkage stress reduces the displacement accuracy of micrometer level sensing elements.
Solution: EP 1710A/B high-performance epoxy sealant
A new energy vehicle component manufacturer has achieved a key performance breakthrough in the turbocharger displacement sensor project by replacing traditional silicone with EP 1710
Core application effect
Performance Requirement EP 1710 Solution
High temperature stability at 150 ℃, thermal deformation temperature>180 ℃, CTE at 150 ℃ is only 28ppm/℃ (lower than the metal shell), zero expansion at high temperature;
Metal bonding strength: Aluminum alloy bonding strength ≥ 12MPa, passing through -40 ℃ ↔ 500 cycles of cold and hot shock at 150 ℃ without delamination;
Waterproof and moisture-proof, with a water absorption rate of less than 0.05%, achieving IP68 protection level after curing, and maintaining insulation resistance of more than 10 ¹⁵ Ω in humid and hot environments (85 ℃/85% RH);
Transparent low stress transmittance>90%, curing shrinkage<0.2%, effectively protecting the structure of the micro strain gauge;
Customer value enhancement
Yield improvement: The defect rate of encapsulation has decreased from 8.2% to 0.5%;
Extended lifespan: The MTBF (mean time between failures) of the sensor has been increased to over 100000 hours under engine compartment conditions;
Cost optimization: Avoiding the secondary sealing process of the metal shell, reducing the manufacturing cost of a single piece by 17%.
Why is EP 1710 the preferred sealing material for displacement sensors?
- Breakthrough in Materials Science
Nano scale silica toughening technology balances transparency and crack resistance;
Exclusive coupling agent formula, forming a chemical bonding layer on the metal surface; - Process adaptability
1: 1 mixing ratio, operable for 40 minutes (25 ℃), suitable for vacuum sealing;
After curing, the surface is smooth and free of ripples, compatible with laser marking technology; - Long term reliability
Certified according to the Volkswagen TL 226 standard
Strength retention rate>95% after aging at 150 ℃ for 3000 hours
Industry expansion application scenarios
✅ Transmission position sensor
✅ Hydraulic cylinder linear displacement detection module
✅ High speed railway braking system travel sensor
✅ Industrial robot joint angle encoder
EP 1710 epoxy sealant has become an ideal choice for sealing displacement sensors due to its transparency, low stress, high temperature resistance, moisture and water resistance, and good adhesion. It not only improves the reliability and service life of the product, but also saves maintenance costs for customers, making it an indispensable high-performance potting material in the industrial electronics field.
Tags: Displacement Sensor Sealing Adhesive · Automotive Electronic Sealing Material · Transparent Epoxy Sealing Adhesive · Moisture proof and Waterproof Adhesive · High Temperature Sealing Material
