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Excellent gas barrier properties: This is its most prominent advantage. Its barrier properties to oxygen and carbon dioxide are 10-20 times better than those of ordinary nylon 6, and this performance is minimally affected by humidity. For example, in a high-humidity environment with a relative humidity of 90%, its oxygen transmission rate is still lower than that of EVOH material, while EVOH's barrier properties decrease significantly under high humidity. After being cooked at 140°C for 30 minutes, its film bag can still retain 70% of its impact strength, which is far superior to traditional nylon products.
Excellent mechanical and dimensional stability: The tensile strength of unreinforced PA-MXD6 can reach 80-100MPa, and the glass fiber reinforced type can even reach 280MPa; the water absorption rate after 24 hours is only 0.16%, far lower than the 2.5% of PA6, which allows it to maintain high strength and rigidity in humid environments with minimal dimensional changes. In addition, its low molding shrinkage rate and length tolerance can be controlled at ±0.05%, making it suitable for the processing of precision components.
Excellent thermal properties: Its melting point is approximately 243℃, with a long-term usage temperature range of -40℃ to 180℃, and a short-term temperature tolerance of up to 220℃. The heat distortion temperature of the unreinforced grade can reach 85 - 100℃ at 1.8MPa, and this temperature can be significantly increased to over 200℃ after being reinforced with fiberglass, meeting the usage requirements in high-temperature scenarios such as automotive engine peripherals and electronic soldering.
Excellent processing and adaptability: The melt exhibits excellent flowability, enabling easy filling of 0.5mm thin-walled structures even with a glass fiber content of up to 60%. It is suitable for various processing methods such as injection molding, extrusion, and blow molding. Additionally, it is compatible with processes like laser welding, spraying, and electroplating. Its good compatibility with PET allows products co-extruded or co-injected with it to be processed together in some recycling systems, enhancing recycling convenience.
Excellent chemical and electrical resistance: Its resistance to oils, organic solvents, acids, and alkalis is superior to that of PA6 and PA66, making it suitable for contact with automotive fluids, chemical reagents, and other substances. It also maintains good electrical insulation performance in high humidity environments, with some models achieving a dielectric strength of 30kV/mm, meeting the insulation requirements of electronic and electrical components.
Main applications
Packaging field: This is its core application area. It is often used as a barrier layer to make multilayer composite films such as PET/MXD6/PE, or used in co-extruded bottle preforms, suitable for packaging beverages such as carbonated drinks, juices, and beer, which can prevent carbon dioxide escape and oxygen infiltration. It can also be used for food packaging such as tomato sauce and edible oil, to avoid food oxidation and deterioration, and extend the shelf life.
Automotive field: It is a high-quality material for "replacing steel with plastic" in automobiles. The linear expansion coefficient of glass fiber composite materials is close to that of various metals, making them suitable for structural components such as electric tailgate braces, rearview mirror brackets, and charging door hinges. They can reduce weight by more than 30% while ensuring assembly accuracy. They can also be used to manufacture sensor housings under the hood, wire harness clamps, and fuel pipe connectors, which can withstand high temperatures and oil erosion around the engine.
Electronic and electrical field: Suitable for making surface mount technology components, LED lamp holders, electronic connectors, and other parts, capable of withstanding the high temperature of lead-free soldering, and with stable dimensions that are not prone to deformation; some flame-retardant models can be used for the casings of televisions and computers, as well as for sockets, switches, and other components, ensuring electrical safety while also being capable of being processed into complex shapes through injection molding, balancing appearance and practicality.
Industry and other special fields: It can be used to manufacture transmission components such as gears, cams, and bearings with light to medium loads, as well as industrial parts requiring high strength and chemical resistance, such as pump casings and valves. In the medical device field, it can also be used to make sterilizable device casings, surgical instrument handles, etc., relying on its heat resistance and dimensional stability to ensure reliable device use.
