4. Properties
The properties of a high-density polyethylene object depend on :
structural parameters: crystallinity, density, molar mass distribution, comonomer quantity and distribution;
part design;
conditions of use ;
operating parameters such as type and duration of stress, and temperature.
The characteristic properties of various HDPEs typical of certain applications are listed in Table 1 .
4.1 Structural parameters
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NF 388 mark – Plastic tanks used for unburied storage of domestic heating oil.
NF 114 mark – Polyethylene pipes for combustible gas distribution networks, drinking water distribution networks, irrigation and industrial applications, non-drinking water and pressurized wastewater systems.
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