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Polyamide, also known as PA, or Nylon, has been mass-produced since 1935.
- It is a thermoplastic polycondensate.
- Applications: Used to make high-lubricity parts (e.g. bearings, blow moldings, and clothing fabric).
- General properties: It has high lubricity and moderate strength. It is tough, inexpensive, and has poor dimensional stability due to water absorption (hygroscopic nature).
- Trade Name: Ultramid, Zytel.