Tag: LowTempImpactTest
-
Ask Dr. Nick: Why Am I Observing Brittle Failures in LLDPE Parts?
Question: I’ve been using the Low Temperature Impact Test to evaluate our LLDPE cooked parts and consistently observing brittle failures. I suspect LLDPE might not be suitable for this test, but I lack supporting data. I’m reaching out to determine if LLDPE is the issue, prompting a material switch, or if our cooking parameters require…
-
Temperature Conditioning for ARM Impact Testing
(and a few other practical tips) Minus 40º (actually the same number in ºF or ºC) is specified as the conditioning temperature prior to drop dart testing, according to the ARM protocol (“Low Temperature Impact Test”, Version 4.0, July 2003). This relatively low temperature has been chosen because it provides a better differentiation between different polyethylene grades and…
-
Low Temperature Impact Test Video
With the help of the Pennsylvania College of Technology, we have added a video of the Low Temperature Impact Test procedure to our series of video clips. This test method covers the determination of the energy required to cause the failure of plastic samples at low temperature by free-falling darts. You can download the written test procedure…