Analysis of the advantages and characteristics of reinforced nylon 66
Reinforced nylon 66 has excellent wear resistance, heat resistance and electrical properties, high mechanical strength, self-extinguishing, and good dimensional stability. It is widely used in automotive industrial products, textile products, pump impellers and first-class precision engineering components.
The mechanical properties of blended materials such as glass fiber and toughener are added to nylon. The results show that with the increase of glass fiber content, the tensile strength and flexural strength of the material are greatly improved, the impact strength is more complicated, and the toughness agent is added, and the toughness of the material is greatly improved. Adding 30% to 35% of glass fiber and 8% to 12% of toughening agent, the material has the best comprehensive mechanical properties.
1. GFR-nylon A plastic (FR-PA) obtained by adding a certain amount of glass fiber to a nylon resin. It can be divided into long glass fiber reinforced nylon prepared by coating method (length of fiber and plastic granules, generally about 10mm) and kneading with chopped fibers, or continuous fiber introduction into twin-screw extruder for continuous shear mixing Short glass fiber reinforced nylon (glass fiber length of about 0.2 to 0.7 mm).
2. Nylon belongs to the polyamide and has an amino group in its main chain. The amino groups have polarities and attract each other due to the action of hydrogen bonds. Therefore, nylon is easily crystallized and can be made into fibers of high strength. The polyamide is a tough horny translucent or milky white crystalline resin, and is usually made into a cylindrical pellet. The molecular weight of the polyamide used for plastics is generally 15,000 to 20,000.
3. Adding 30% glass fiber to PA, the mechanical properties, dimensional stability, heat resistance and aging resistance of PA66 are obviously improved, and the fatigue strength is 2.5 times that of unreinforced.
4. Use reinforcing materials to improve the performance of nylon. The reinforcing materials include glass fiber, asbestos fiber, carbon fiber, titanium metal, etc. Among them, glass fiber is mainly used to improve the heat resistance, dimensional stability, rigidity and mechanical properties of nylon. Strength and flexural strength), especially mechanical properties, are significantly improved, making it an engineering plastic with excellent performance. Glass fiber reinforced nylon is available in both long fiber reinforced and short fiber reinforced nylon 66.
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