Nylon Plastics

Growth of the use of nylon resins has been rapid and continuous with new applications based on superior mechanical properties, introduction of new types of nylons, and modification of the basic properties to meet special requirements. Most of the physical properties of polyamides of these two types are very similar, but synthesis and some chemical properties are quite different. Improvements in melt flow may be related either to a minor plasticizer effect or to melt slippage at the metal walls depending on the solubility of the lubricant. Monofilament is considered a textile product because the raw material is sold in pellet form and the diameter of the thread is usually greater than that found in yarn. The polyamides, or nylons, were the first materials to be recognized as engineering thermoplastics, owing to their superior mechanical properties, especially when exposed to elevated temperatures or solvents.