Crastin® PBT is often chosen for electrical connectors and sensors in vehicles or industrial applications due to its superior electrical insulation properties especially at temperature. The latest electric vehicles will rely on Crastin® technologies as the voltage running around the system could be around 450 volts, so we need technologies to insulate and provide the ultimate in safety.
But challenges remain for PBT in such applications due to the variations in the environment that the connector has to withstand, especially when it comes to the combination of high temperatures and humidity. This combination can have severe detrimental effects long terms as this can cause hydrolysis, chemically degrading the PBT causing a complete loss in performance and mechanical properties.
To prove the performance, long term testing has been carrid out on standard PBT glass filled versus Crastin® hydrolysis-resistant technologies. Tensile test bars are put inside a climatic chamber and exposed to combination of temperature (85ºC) and humidity at 85%. RH Test bars are removed after a number of hours and the tensile strength is checked. If the test piece has suffered from hydrolysis attack, there will be a loss of performance.
Crastin® Hydrolysis Resistant:
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