Nylon (PA) and its flame retardant modified PAIssuing time:2023-11-24 19:10 PA has the following advantages and disadvantages in terms of performance: It is a crystalline material with the advantages of: 1. It has high mechanical strength, excellent toughness, high tensile and compressive strength. 2. It has excellent fatigue resistance and can maintain its original mechanical strength even after repeated bending. 3. Smooth surface, low friction coefficient, and wear resistance. IV. Corrosion resistance, alkali resistance, most salt solutions, weak acids, engine oil, gasoline. V. It is non-toxic, has no activity against biological erosion, and has excellent antibacterial and detoxification properties. 6. It has high heat resistance, a wide temperature range, can be used for a long time at temperatures ranging from 45 to 100 ° C, and can reach temperatures ranging from 120 to 150 ° C in a short period of time. 7. It has excellent electrical characteristics and excellent electrical insulation. 8. The parts are lightweight and easy to dye and shape. Disadvantages: 1. Easy to absorb moisture. 2. Poor light resistance. 3. It is not resistant to strong acids and oxidants. IV. The technical requirements for design are more stringent. Processing requirements: Generally, the molding conditions should be lower mold temperature, lower material temperature, longer time, and higher injection pressure. PA type and overall performance: The main types of PA are PA6 and PA66, which have advantages. PA11, PA12, PA610, PA612, PA1010, PA46, PA7, PA9, PA13, and new varieties include PA6I and PA9T special nylon MXD6 (barrier resin). There are many improved varieties of PA, including reinforced PA, monomer cast nylon (MC nylon), reaction injection molding (RIM) PA, and aromatic PA. As various structural materials that meet various special requirements, such as transparent PA, impact resistant (super tough) PA, electroplated PA, conductive PA, flame retardant PA, PA, and other polymer blends and alloys. Widely used as traditional materials such as metal and wood. PA is an important engineering plastic, and its production ranks among the five common engineering plastics. Performance: PA is a semi transparent or milky white crystalline resin with hard corners. The molecular weight of PA, as an engineering plastic, is usually between 15000 and 30000. PA has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self-lubricating, vibration reduction and noise reduction performance, oil resistance, weak acid resistance, alkali resistance, and general solvent resistance. It has excellent electrical insulation properties. It has excellent self extinguishing properties, is non-toxic, odorless, weather resistant, and can be dyed. The disadvantage is high water absorption, which can affect dimensional stability and electrical characteristics. Fiber reinforced materials reduce the water absorption rate of the resin, so it can operate under high temperature and high humidity. Nylon has a good affinity with fiberglass. At PA, PA66 has high hardness and stiffness, making it hard. According to strength, the order of various PAs is PA66/6 The flammability of PA is UL94V |