Polyethylene (PE)

Polyethylene (PE) is a thermoplastic material produced from the polymerization of ... PE materials are generally resistant to most ordinary chemicals

Test Preparation by Salim Belouettar — last modified 2006-10-19 14:51

 

Determination of k-Value by Salim Belouettar — last modified 2006-10-19 14:36

Integral part with the application of the time-temperature principle is the k-value as material constant. For the determination of the k-value 2 temperature-elongation rate-pairs of variates are necessary which approximately show identical stress-strain curves

Test Run with Increase of Temperature by Salim Belouettar — last modified 2006-10-19 14:50

In order to generate an isochronic stress-strain diagram tension tests are carried out at heated up specimens. These tests are carried out in a chamber with temperature being continuously adjustable. The tests are repeated several times. By means of the time-temperature principle the test results are converted to a reference temperature of here 20°C, with a simulated test elongation rate resulting which is much lower than compared to the real test. Via the 3-parameter-approach (9, p. 134 et seqq.) the tests with simulated lower elongation rate are evaluated to that an isochronic stress-strain diagram results