Laden Seite
Laden Seite
Static charges can occur during the operation of thermoplastic pipeline systems in explosive areas with liquids or dusts. In order to be able to dissipate these charges, electrically conductive materials must be used. By the addition of the conductive carbon black, the electrically conductive materials PE-el and PPs-el have reduced impact strength and time stability, the chemical resistance remaining largely.
PPs is a flame retardant polypropylene, which is classified by the addition of flame retardants to the building material class B1 (according to DIN 4102). Due to its reduced flammability, PPs are used for ventilation and exhaust gas pipes in buildings.
Modified molding compounds (flame retardant or electrically conductive PE / PP) do not correspond to the relevant provisions of foodstuffs in their composition due to the admixture of additives or because of the high soot content, and are therefore not suitable for drinking water pipes and contact with foodstuffs.
Due to its electrical conductivity, PE-el is often used to transport easily combustible media (eg fuels) or to transport dusts at temperatures of up to 60 ° C. Reduced impact strength and creep strength as well as slightly modified chemical resistance are to be taken into account in the design. (Observe publisher guidelines!).
PPs: Polypropylene, flame retardant
Due to the higher stiffness of PPs it is particularly suitable for ventilation pipes and exhaust pipes. However, it is not suitable for outdoor use because of the lack of UV stabilization without protective measures.
PPs-el: Polypropylene, flame retardant, electrically conductive
This material combines the positive properties of the flame-retardant and electrically conductive PP grades. For safety reasons, it is used mainly for the transport of highly flammable media. Reduced impact strength and creep strength as well as slightly modified chemical resistance are to be taken into account in the design.
