Various types of plastics are commonly used for automotive wire harness terminals and connectors:
Polyamide (PA): Also known as nylon, this material possesses excellent mechanical properties-specifically high strength and good toughness-enabling it to withstand external forces without easily sustaining damage. It also exhibits superior wear resistance, which helps ensure the longevity of the connector during frequent mating and unmating cycles. Furthermore, it demonstrates good chemical stability, offering resistance against corrosion from various chemical substances.
Polycarbonate (PC): This plastic is characterized by its high transparency and excellent electrical insulation properties. It offers relatively good heat resistance, maintaining stable performance within a specific temperature range, which helps it adapt to the diverse operating environments found in automobiles. Additionally, PC-based connectors feature high dimensional precision, facilitating a secure and proper fit with the terminals.
Thermoplastic Polyester Elastomer (TPEE): This material boasts exceptional elasticity and fatigue resistance. During repeated mating and unmating operations, it retains its elastic recovery capabilities, thereby ensuring reliable electrical connections. Its resistance to both high and low temperatures is also outstanding, allowing it to function normally across a wide temperature spectrum.
It is anticipated that, with the continuous advancement of automotive technology, new types of high-performance plastics will likely be adopted for wire harness terminals and connectors. These materials will aim to meet the increasingly stringent demands placed on automotive electrical systems-such as requirements for enhanced high-temperature resistance, high-voltage resistance, and lightweight construction. When selecting a plastic material, it is essential to comprehensively consider various factors, including the specific application scenario of the connector and its performance requirements.
