Geomembranes are geotechnical impermeable materials made of plastic film as an impermeable base material and compounded with non-woven fabric, divided into low-density polyethylene (LDPE) geomembranes and high-density polyethylene (HDPE) geomembranes. They are polymeric flexible materials with low specific gravity, high extensibility, high adaptability to deformation, corrosion resistance, low-temperature resistance, and good frost resistance.
What is the difference between 100% Virgin Materials and recycled HDPE geomembranes? 100% Virgin Materials HDPE geomembranes are geomembranes made from 100% Virgin Materials HDPE resin granules, while recycled HDPE geomembranes are geomembranes made from recycled HDPE resin granules. There are many significant differences between these two types of HDPE geomembranes.
Differences in raw materials between virgin HDPE geomembranes and recycled HDPE geomembranes.
In China, the raw materials for brand 100% Virgin Materials HDPE geomembranes are first of all domestic brand 100% Virgin Materials and imported brand 100% Virgin materials, of which domestic brand 100% Virgin materials include Sinopec, Yanshan Petrochemical, Qilu Petrochemical, and Kunlun Petrochemical, while imported brand 100% Virgin materials include Iranian Petrochemical, Saudi Petrochemical, Bolu Chemical, Nordic Chemical, and other brands. The raw material of HDPE geomembrane is high-density polyethylene plastic recovered particles produced by domestic or foreign small factories, without brand.
The physical function difference between 100% Virgin materials HDPE geomembrane and recycled HDPE geomembrane
The physical functions of HDPE geomembranes include tensile strength, yield strength, puncture strength, right angle tear strength, etc. These physical functions of 100% Virgin materials HDPE geomembranes are much higher than those of regrind HDPE geomembranes.
Differences in chemical functions between 100% Virgin materials HDPE geomembranes and regrind HDPE geomembranes
The chemical functions of HDPE geomembranes include crack resistance, aging resistance, sunlight resistance, oil and salt resistance, acid and alkali resistance, corrosion resistance, high-temperature resistance, low-temperature resistance, harmlessness, etc. These chemical functions of 100% Virgin materials HDPE geomembranes are much higher than those of regrind HDPE geomembranes.
Appearance differences between brand 100% Virgin materials HDPE geomembranes and recycled HDPE geomembranes
Brand 100% Virgin materials HDPE geomembranes have a lubricated, shiny and flexible appearance, while regrind HDPE geomembranes have an oily appearance, rough material spots, and poor flexibility.
The difference between brand 100% Virgin materials HDPE geomembranes and recycled HDPE geomembranes service life
Brand 100% Virgin materials HDPE geomembranes have a life expectancy of 50 to 100 years underground, while HDPE geomembranes made with recycled materials have a life expectancy of no more than 10 years underground at most, and are not recommended for use above ground.
The price difference between the brand 100% Virgin materials HDPE geomembrane and recycled HDPE geomembrane
The price of brand 100% Virgin materials HDPE geomembranes is generally higher than that of recycled HDPE geomembranes of the same thickness.
Generally speaking, civil impermeable projects with low requirements can use inexpensive recycled HDPE geomembranes, such as aquatic feeding impermeable projects, lotus root pond impermeable projects, cistern impermeable projects, etc. For projects with severe requirements on the application environment, brand 100% Virgin materials HDPE geomembranes should be used, for example, landfill seepage control projects, tailings disposal site seepage control projects, cesspool seepage control projects, digester seepage control projects, oxidation pond seepage control project, oil storage tank seepage control project, chemical reaction pond seepage control project, etc.
