This paper describes how to select the suitable automotive sensor glue, including different kinds of characteristics and selection requirements.

1. Silicone rubber: Silicone rubber is a commonly used automotive sensor sealing glue. It has excellent high temperature resistance and anti-aging ability, and can be used for a long time in a harsh environment. In addition, the silicone rubber also has a good elasticity, which can effectively protect the sensor from the external impact and vibration. However, the strength of silicone rubber is insufficient, for the higher requirements of automotive sensors, the line end connection may also receive external force pull, silicone rubber is easy to deglulose. Therefore, the pursuit of higher intensity of the sealing can adapt to the increasingly stringent requirements.

2. Modified rubber sealing rubber: modified rubber sealing rubber is another option. It has good adhesion and high strength, elasticity close to silicone, but more hardness, better adhesion, and higher tear resistance and stripping strength. Therefore, the stability and reliability of the automobile sensors have been greatly improved. Rubber-type sealing glue also has a high tensile strength and wear resistance, which can protect the sensor from the erosion of the external environment. Natural curing of AB components is also a major advantage.

3. Modified epoxy resin: The epoxy resin glue here does not refer to the common rigid hard sealing glue. It is a modified rubber-like and flexible elastic seal. It has higher cohesion than rubber sealing glue, and higher adhesion, but also has higher temperature resistance. This glue needs to be mixed and heated for 1 hour to achieve high-strength curing. In addition, the modified epoxy resin also has good insulation performance, which can reduce the interference between the electronic components and improve the stability of the sensor.

 There are also some requirements to be considered:

1. High temperature resistance: the temperature in the automobile engine compartment is high, so the sensor sealing glue needs to have good high temperature resistance, which can be stable in the high temperature environment.

2. Chemical resistance: automotive sensors will inevitably encounter a variety