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Pond liner for a garden pond A pond liner is an impermeable geomembrane used for retention of liquids, including the lining of reservoirs , retention basins , hazardous and nonhazardous surface impoundments, garden ponds and artificial streams in parks and gardens.
HDPE pipe is a type of flexible plastic pipe used to transfer fluids and gases. It is often employed for replacing aging concrete or steel main pipelines . Constructed from the thermoplastic HDPE (high-density polyethylene ), it has low permeability and robust molecular bonding, making it suitable for high-pressure pipelines .
HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]
As liners for potable water; As liners for reserve water (e.g., safe shutdown of nuclear facilities) As liners for waste liquids (e.g., sewage sludge) Liners for radioactive or hazardous waste liquid; As liners for secondary containment of underground storage tanks; As liners for solar ponds; As liners for brine solutions
A landfill liner, or composite liner, is intended to be a low permeable barrier, which is laid down under engineered landfill sites. Until it deteriorates, the liner retards migration of leachate , and its toxic constituents, into underlying aquifers or nearby rivers from causing potentially irreversible contamination of the local waterway and ...
These molecules are several orders of magnitude longer than those of familiar high-density polyethylene (HDPE) due to a synthesis process based on metallocene catalysts, resulting in UHMWPE molecules typically having 100,000 to 250,000 monomer units per molecule each compared to HDPE's 700 to 1,800 monomers.