Exploring Boundries: Prolonged ISO 9080 Testing Revealing the Full Capabilities of PE-X

Papers # 2014 Chicago

Plastic Materials have been used in the hot and cold water segment for many years. Cross linked materials in different pipe designs can be used for these applications e.g. under floor heating and sanitary installations. Due to the cross-linked polyethylene network, long-term properties like creep resistance, high temperature resistance and resistance to crack propagation are greatly improved.

Various tests, like “the determination of the long-term hydrostatic strength of thermoplastic materials (ISO 9080)” 1.) have been developed and implemented into standardization in order to simulate the service life and to ensure a reliable product for the end user.

PE-Xc materials have been tested in accordance to ISO 9080. Usually ISO 9080 tests can be stopped after 8760h (1 year), and the lifetime extrapolated to 50 years. For this study however, the pipe samples were kept on test and continued until failure. At temperatures clearly above application temperatures very long lifetimes were achieved – thus proving the outstanding long-term performance of PE-X materials.

Also, the stress crack resistance of cross-linked PE materials was investigated using methods normally applied for non-cross-linked PE pipe materials, and even after years of testing no failures were observed for cross-linked pipes.

Related keywords : iso, cross, testing, pipe, failure, material, brittle, crack, resistant, years, water.
Please note that the whole article content is available on PPCA website onlySource : 2014 Chicago

Related papers

Polypropylene Pipe: An Evolving Market

Author(s) : Steve Sandstrum, Stefan Dreckoetter, Zak Schultz 2016 Berlin

This paper provides a historical overview of the development of polypropylene (PP) for piping applications. The discussion includes a historical review of each step in the evolutionary trend for PP piping materials over the last 40 years and culminates with a focus on the most recent development in PP piping...


Author(s) : Stefan Kremling, Thomas Hochrein, Peter Heidemeyer 2016 Berlin

In plastics industry, the use of terahertz technology opens up opportunities for novel non-destructive and contactless testing applications. For example, the thickness of individual layers of a foamed multilayered plastic pipe can be monitored contactless and continuously during the extrusion process. Furthermore,...


Author(s) : Dr. Stefan Fokken 2016 Berlin

An overview of stabilizer systems for PVC pipes had been given at the last Plastics Pipes conference (PPXVII), detailing which technologies are used around the world. This presentation aims to give an update upon technology changes (replacement of Lead stabilizers by Ca-based stabilizers, situation of Tin stabilizers)...

Unlocking New Applications: PP-RCT for Demanding Skyrise Buildings

Author(s) : Christophe Salles, Christoph Stamm, Hugo Hammar 2014 Chicago

Traditional piping materials e.g. metals are becoming outdated due to their high weight, difficult handling and questionable performance over time. These are only a few of the reasons why plastics have rapidly become the preferred pipe material over the last few decades. PP-RCT (PolyPropylene Random Crystalline...

Members of the Association

BOREALISBOROUGEINEOS O&PIRPCKorea Petrochemical IND. Co., LTDLyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE