Silane Crosslinking of Polyethylene-HD Pipes

Silane crosslinked polyethylene pipes show much better temperature creep behaviour than non-crosslinked polyethylene-HD pipes, thereby allowing long-term service temperatures of 90°C. Other crucial advantages of crosslinked polyethylene for pipes are:

• Improved chemical and corrosion resistance, PEX does not dissolve in solvents
• Significant reduction in weight
• Significant reduction in laying costs
• High abrasion resistance
• High thermal resistance
• High dimensional resistance
• Enhanced safety against crack formation
• Superior resistance against rapid crack propagation (RCP)
• Use in “no-dig” applications
• No corrosion as found in metals

HD-Polyethylene pipes can be efficiently crosslinked with Dynasylan^® SILFIN 50.

Depending on the type of HD-Polyethylene, the amount of Dynasylan^® SILFIN 50 needs to be varied in order to achieve the 65 % gel-content level.

For the production of the polyethylene pipes used for potable water supply, Dynasylan^® VTMO is an ideal crosslinker. In many countries, Dynasylan^® VTMO has received a document of compliance issued by the regulatory agencies. For specific requests, please use our solution finder or contact your local sales representative.