What happens to thermoplastic insulation when exposed to low temperatures?

The behavior of thermoplastic insulation when exposed to low temperatures is primarily characterized by a decrease in flexibility. As the temperature drops, the molecular structure of the thermoplastic material undergoes changes that increase its rigidity, causing it to become stiff. This change can affect the performance and reliability of the insulation in applications where flexibility is essential, such as in cables or other flexible components.

While some materials may remain stable at low temperatures or even become more flexible under certain conditions, thermoplastics generally do not exhibit these properties. Understanding this behavior is crucial for ensuring that insulation is suitable for the conditions it will face in its application.