What Are the Advantages of Nylon 66?

Understanding of Nylon 66

Nylon 66, also known as polyamide 66 or polyhexamethylene adipamide, is made from hexamethylenediamine and adipic acid through polycondensation. It has good comprehensive performance, with advantages such as high strength, good rigidity, impact resistance, oil and chemical resistance, wear resistance, and self-lubrication. Its hardness, rigidity, heat resistance, and creep resistance are even better, and the raw materials are easy to obtain with low cost, making it widely used in industries such as industrial, clothing, decoration, and engineering plastics. The melting point of Nylon 66 is higher than Nylon 6, with excellent heat resistance, high elastic modulus, low water absorption, and excellent characteristics for molded products, especially as mechanical parts around the car engine and parts of electronic and electrical products that are easily affected by heat due to its good heat and oil resistance. Currently, the automobile application of Nylon 66 accounts for 63%, while the application in the electronic and electrical and office automation equipment sectors accounts for 22%, and the application in machinery and optics accounts for 5%. Therefore, the market sales of Nylon 66 composite materials are growing rapidly. In recent years, with the rapid development of industries such as automobiles, electrical appliances, communication, electronics, and machinery, higher and more stringent requirements have been put forward for Nylon 66 products, which have also accelerated the high-performance process of Nylon 66 and its composites.

Advantages of Nylon 66

• High mechanical strength, good toughness, high tensile and compressive strength. Its tensile strength is higher than that of metal, and its compressive strength is comparable to that of metal, but its rigidity is not as good as metal. Its tensile strength is close to the yield strength and is more than twice that of ABS. It has strong ability to absorb impact and stress vibration. Its impact strength is much higher than that of ordinary plastics and is better than that of acetal resin.

• Excellent fatigue resistance, and the product can maintain its original mechanical strength after repeated bending. Nylon is commonly used in common situations with cyclic fatigue effects on escalator handrails and new bicycle plastic rims.
  

• High softening point and heat resistance (such as Nylon 46, high-crystallinity Nylon has a higher heat deformation temperature and can be used for a long time at 150 degrees. After Nylon 66 is reinforced with glass fiber, its heat deformation temperature reaches more than 250 degrees).
  

• Smooth surface, low coefficient of friction, and wear resistance. When used as a movable mechanical part, it has self-lubrication and low noise. When the friction force is not too high, lubricant can be omitted. If lubricant is required to reduce friction or help dissipate heat, water, oil, and grease can be selected. Therefore, as a transmission component, it has a long service life.

• Corrosion resistance, very resistant to alkali and most salt solutions, resistant to weak acid, machine oil, gasoline, aromatic compounds, and general solvents, inert to aromatic compounds, but not resistant to strong acid and oxidants. It can resist erosion from gasoline, oil, fat, alcohol, and pimples, and has good anti-aging ability.