ISO 16770

Plastics - Determination of environmental stress cracking (ESC) of polyethylene - Full-notch creep test (FNCT)

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Organization: ISO
Publication Date: 1 February 2004
Status: active
Page Count: 18
ICS Code (Thermoplastic materials): 83.080.20
scope:

This International Standard specifies a method of determining the stress cracking resistance of polyethylene materials in any environment. The test is carried out on notched test specimens cut from compressionmoulded sheet or finished products, as applicable. The test specimen is subjected to a static tensile load when immersed in an environment such as a surfactant solution held at a specified temperature, and the time to failure measured.

The method has been specifically developed for polyethylene materials but can be used to evaluate PE extrusions, such as pipe segments, PE fusion welds/fittings and blow-moulded PE containers to study the effect of aggressive environments, i.e. dangerous goods/chemicals. The method may also be adapted for other thermoplastic materials, e.g. polypropylene (PP). In this case, care must be taken in interpreting the results as the processing stresses/orientation in finished products may have an effect.

Document History

February 15, 2018
Plastics - Determination of environmental stress cracking (ESC) of polyethylene - Full-notch creep test (FNCT)
This document specifies a method for determining the resistance to slow crack growth (SCG) of polyethylene (PE) materials in a defined test environment. The test is carried out on notched test...
ISO 16770
February 1, 2004
Plastics - Determination of environmental stress cracking (ESC) of polyethylene - Full-notch creep test (FNCT)
This International Standard specifies a method of determining the stress cracking resistance of polyethylene materials in any environment. The test is carried out on notched test specimens cut from...

References

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