Temperature sensor is an important part during car repair and maintenance. It can monitor the temperature of the car in real time, reminding us whether measures need to be taken to protect the engine and other key components. However, due to the complexity of the working environment, the temperature sensors often need it to be sealed to protect it from the external environment. This paper will introduce a one-time problem solution.

 In the past, silicone or epoxy resin was used to seal it. Silicone is a material with good sealing and high temperature resistance. This method is simple and easy to do, with low cost, but after sealing, it is low in strength, easy to tear and peel, without force.
 Using epoxy resin for sealing can be better high temperature and corrosion resistance. Unlike silicone, the protective layer formed by epoxy resin is hard and not easy to peel and wear. However, the epoxy resin after curing stress, easy to damage the internal sensitive parts. On the other hand, the general epoxy resin has poor vibration resistance, low tg point, and easy to embrittlement.

 We propose a one-time problem solution for —— using encapsulated temperature sensors. Seating was performed with ENIENT EG0528AB modified rubber. Rubber is a material with good elasticity and seismic resistance, which is perfect for the sealing of automotive temperature sensors. This kind of rubber progressive modification has high temperature resistance and excellent adhesion for the substrate. Advanced formulation makes the glue have a low viscosity, immediate smaller space and complex paths easy to seal, easier to eliminate air, avoid stomata during filling, and very suitable for mechanized operations. The AB components are mixed and cured, without heating or special curing conditions, which is very simple and efficient. The appropriate operation time can also be enough easy operation and can have a fast curing time. Suitable for mass production and highly efficient production. The sealing protective layer formed by this modified rubber sealing adhesive can better isolate the influence of the external environment on the sensor, while protecting the internal electronic components of the sensor from the influence of moisture, oxidation, vibration and impact, etc.

In short, there are many fillings, and each method has its advantages and disadvantages. The primary solution —— uses a packaged temperature sensor, which can simplify the operation and improve the efficiency to a certain extent. No matter which method is chosen, attention should be paid to the quality of materials and operation specification to ensure the safety and reliability of automotive temperature sensors.