Infrastructure & building technology
Radiation crosslinked applications for infrastructure projects
Current developments such as fiber optic expansion, the expansion of the energy infrastructure for district heating, and local heating networks as well as building technology with its drinking water, gas and heating installations require robust, durable pipe and tube applications with high insulation and sealing properties. Radiation crosslinking is a crucial technology for achieving the required properties for the applications used.
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More Informationapplications: RADIATION CROSSLINKING OF PLASTIC PIPES AND TUBES
District heating is climate-friendly because it uses waste heat from power plants. This is one of the main reasons why the district heating network is currently undergoing major expansion. Radiation crosslinked plastic pipes made of HDPE (PE-Xc) are ideal for use in district and local heating networks, as they have increased temperature resistance and dimensional stability. PE-Xc pipes can transport heat efficiently over long distances and minimize heat losses at the same time.
The radiation crosslinking of plastic pipes has also proven its worth for decades in underfloor heating and drinking water installations in buildings. Compared to chemically crosslinked PE-Xa and PE-Xb pipes, there is no risk of residues from the crosslinking chemicals with radiation crosslinked PE-Xc pipes. In addition, physical crosslinking is characterized by very high process reliability and a significantly higher production speed compared to chemical crosslinking processes.
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Are you interested in radiation crosslinking of tubes & pipes? We would be happy to check your request for the irradiation of your products.
MATERIAL PROPERTIES : PROPERTY IMPROVEMENTS OF PE-XC PIPES
Ionizing radiation can be used to raise the mechanical, thermal and chemical properties of many plastics to a higher level. PE-Xc pipes and radiation crosslinked plastic tubes exhibit significantly improved properties in terms of their thermal and chemical resistance. Creep behavior and abrasion resistance are also optimized in this way. In short: radiation crosslinked plastic pipes and tubes gain in durability and maintain their reliable function even under demanding conditions. Service lives of over 30 years are common.
The most important property improvements of radiation crosslinked PE-Xc pipes and PE-Xc multilayer composite pipes at a glance:
- Very good long-term behavior in the internal pressure creep test
- Good heat aging stability
- High environmental stress cracking resistance
- Good chemical resistance
- Cold-laid without heat treatment
- Laying in tight bending radii
- High corrosion resistance
- Smooth pipe walls, i.e. low pressure loss and no incrustations
- Good abrasion resistance and tear resistance
- Impact-resistant at low temperatures
Good to know: Multilayer composite pipes, wound on drums or as bar stock, can be crosslinked in a single process step. The irradiation of the metal component can be easily achieved by optimizing the irradiation parameters. This also increases the bond strength.
SHRINK TECHNOLOGY : MEMORY EFFECT THROUGH RADIATION CROSSLINKING
Shrink technology is another important area of application for radiation crosslinking. Irradiation makes it possible to activate restoring forces in the plastic. This memory effect has proven its worth in the manufacture of shrink products such as sockets and sleeves. In the case of steel or cast iron pipes that are coated with plastic to protect them from corrosion, the recovery properties caused by crosslinking ensure that the protective plastic adheres closely to the metal.
RADIATION CROSSLINKED PIPES : POTENTIAL FOR ENERGY REVOLUTION &
DIGITALIZATION
Energy policy
Radiation crosslinked pipes can meet all the requirements for safety, durability and environmental compatibility that are necessary for safe heat transport. The basis for this is the improved chemical resistance and toughness of the plastics. Pipelines made from radiation crosslinked plastics can thus help to reduce dependence on other fossil fuels.
Digitalization
Radiation crosslinked plastic pipes also score highly in the expansion of the telecommunications infrastructure thanks to their mechanical properties and durability. The high strength of the pipe materials is a prerequisite for the safe laying of sensitive fiber optic cables. Radiation crosslinked pipes improve the efficiency and reliability of broadband networks and support the expansion of fast internet connections.
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