ICEA T-28-562:2003

$28.60

Test Method for Measurement of Hot Creep of Polymeric Insulations

Published By	Publication Date	Number of Pages
ICEA	2003	12

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Category: ICEA

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Description

This test method provides a procedure, which is suited for
determining the relative degree of crosslinking of polymeric,
electric cable insulations.

Summary of Method:

Elongation Test: A specimen is subjected to a constant load
stress while suspended in an air oven at a specified elevated
temperature for a specified time period. At the end of the time
period the increase in elongation of the specimen is determined.
Set Test: Immediately after the elongation test has been completed
on a specimen, the same specimen with the load stress removed, will
be subjected to an additional time period in the oven at the same
elevated temperature. The specimen is then removed and allowed to
cool. The set of the specimen, based on original length, is then
determined.

Significance:

The test method has a consistent reproducibility, which makes it
particularly suitable as a quality control test for determining
relative degree of crosslinking. This method has been found more
reproducible than the other methods in current use such as heat
deformation. Also, it corresponds more closely to service
conditions than a solvent-extraction procedure.

Additional information