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HDPE

Today we will introduce the raw material HDPE. HDPE stands for High Density Polyethylene, which is a high crystallinity, non-polar thermoplastic resin. The original HDPE is milky white in appearance and semi-transparent to some extent on a thin cross-section.


This product is in powder form, an environmentally friendly product that is non-toxic and odorless and does not pollute the environment. It has a high crystallinity, with a minimum of 80% and in good condition, it can reach around 90%. The density is within the range of 0.940 to 0.976 g/cm3; crystallinity is 80% to 90%; softening point is 125 to 135℃, and the operating temperature can reach 100℃; hardness, tensile strength and creep resistance are better than low-density polyethylene; wear resistance, electrical insulation, toughness, and cold resistance are all good, but slightly worse than that of low-density polyethylene in terms of insulation; good chemical stability. In addition, HDPE has low water absorption and does not dissolve in any solvent. It can be used at temperatures as high as 100 degrees Celsius and has excellent acid and alkali resistance.


Advantages: HDPE material has high density, strong compression resistance, strong mechanical properties, and excellent performance in terms of wear resistance, roundness, and toughness. It is an excellent polymer material. In addition, HDPE material not only has excellent high-temperature resistance but can also be used well even in cold environments.


Disadvantages: HDPE material has excellent overall performance, but it has a fatal flaw, which is its average aging resistance. If it is subjected to the influence of long-term thermal oxidation, the performance of the product will rapidly deteriorate, thereby shortening the service life of the material. If the processing manufacturer wants to mitigate this situation, a large amount of antioxidants must be added, which will affect the material's environmental performance.

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