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Engineering Materials

Reducing Electro Corrosion

As automotive electronics become more powerful and complex, they generate higher power levels and more heat, increasing the risk of electrical failure and fire. Often, ionic additives, such as inorganic heat stabilizers or red phosphorous flame retardants are used to improve the thermal and flame retardant performance of the plastic components.

As these components degrade, additives can form acids that corrode electrical contacts after prolonged exposure to heat and moisture. This may cause an electronic component to fail or change its characteristics, potentially compromising a key vehicle safety feature, such as a sensor, which may lead to severe consequences for your brand. 

For electrical systems, it is important to choose thermoplastic materials that will not cause corrosion or rely on halide additives or red phosphorous for their thermal and flame retardant capabilities. By limiting halides (<50–100 ppm) in connectors, sensors, ECUs and PCUs, electro corrosion can be avoided. DSM offers a broad portfolio of materials that are halide free, enabling manufacturers to minimize the risk of electrochemical corrosion.