The characteristics and functions of PPA plastics
2023-05-30
The scientific name of PPA plastic is polyphthalamide. This plastic has advantages in strength, toughness, hardness, fatigue resistance and creep resistance. In the continuous high temperature and high humidity state, it can also withstand the high temperature of 200 ° C, and continue to maintain its good dimensional stability, which can eliminate shark skin. In general, in tensile strength, PPA is 20% higher than nylon 6 and higher than nylon 66; In the bending modulus, PPA plastic is 20% higher than nylon, so the hardness is greater, and the tensile and creep equipment is long. PPA is stronger than PA in P's resistance to gasoline, grease and coolant. PPA also improves surface finish.
In application, PPA is widely used in cables, pipes and fibers. Applications include PE films, BOPP/OPP stretched films, HDPE hollow, PE and PP sheets. In our daily mobility cars, automotive components, transmission and engine systems reduce weight, cost and provide a long service life at the moment of fuel consumption. The application of chipset and socket and cup body welding supports can prevent deformation and strain. Connectors, controllers, sensors, motors and other key electronic components, high-frequency electronic components, can improve the processing performance of metallocene resin, make full use of its excellent physical properties.
In effect, if you want to produce high-strength high-quality film, the use of PPA, you can increase the tension, thereby reducing costs; Eliminate carbides attached to the steel surface of the equipment, extend the maintenance cycle of the equipment, and maintain the use of the equipment well; Reduce melt break and shark skin phenomenon, improve transparency; Improve the brightness and smoothness of the product surface, thereby improving its printing quality; Greatly reduce the crystal points produced in the film processing process, thus reducing the white points caused by crystal points during fine printing; Eliminate longitudinal drag marks caused by die heads or equipment transmission components on the film surface; Improve the uniformity and stability of the film thickness, thereby improving its physical properties; Reduce the die head temperature to ensure the stability of the blowing film bubble body; Improve the colorability of the pigment, shorten the color switching time, extend the continuous production time.
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