Advantage:
Polyethylene respectively has higher frost resistance (up to -60 degrees Celsius) and good impact resistance at subzero temperatures.
The upper limit of operating temperature is +70 degrees. C. Polypropylene has higher heat resistance (up to +90 degrees Celsius).
Polyethylene is a more elastic and less brittle polymer. And polyethylene sheet has higher flexibility and density.
The surface of polyethylene sheet is less resistant to contamination than polypropylene. PP sheet has a harder (harder) surface.
Like polypropylene, sheet polyethylene has a high chemical composition. Durability. Polyethylene is moisture impermeable and resistant to fuels and lubricants, alcohol, oils and fats. It does not react with acid, alkali and salt solution, and is insoluble in organic solvents.
High pressure polyethylene sheet , This polymer is also called high density polyethylene (referred to as PVP or HDPE) in English. HDPE (High Density Polyethylene).
It is similar to the material of the polyolefin group. Polyethylene (HDPE) and polypropylene (PP block copolymers) are largely similar and compete with each other in terms of their properties and applications. The differences among them make them have different advantages in different applications.”
