210D 420D POLYMAIDE6 FDY spinning machine

Nylon 66 has a higher melting point among polyamide materials. Polyamide nylon 66 is a semi-crystalline crystalline material. Nylon 66 material also maintains great strength and stiffness at higher temperatures. PA66 is still hygroscopic after molding, and the degree of hygroscopicity mainly depends on the material composition, wall thickness and environmental conditions. In product design, the effect of hygroscopicity on geometric stability must be considered. In order to improve the mechanical properties of nylon 66 pipes, various modifiers are often added. Glass is the most common additive, and synthetic rubbers such as EPDM and SBR are sometimes added to improve impact resistance. PA66 has a lower viscosity and therefore better flow (but not as good as PA6). This property can be used to handle very thin components. Its viscosity is sensitive to temperature changes. The shrinkage of PA66 is between 1% and 2%. Adding glass fiber additives can reduce the shrinkage to 0.2%~1%. The fl…