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The Importance of Oxidative Stability In Polyolefins, Part 2
The DSC test can do a reasonably good job of capturing the comparative behavior of materials that use similar antioxidant chemistries.
Columns Published: 9/27/2016
MATERIALS: The Importance of Oxidative Stability in Polyolefins
Because oxidation is a process that causes materials to deteriorate over time, its effects or potential for those effects are not always apparent when new products are tested.
Columns Published: 8/24/2016
MATERIALS: Understanding Strain-Rate Sensitivity In Polymers
Material behavior is fundamentally determined by the equivalence of time and temperature. But that principle tends to be lost on processors and designers. Here’s some guidance.
Columns Published: 7/29/2016
MATERIALS: Thermoplastic Urethanes: Why Annealing Makes a Big Difference
Under the right conditions, annealing can drive TPU performance to a greater level than can be achieved at room temperature.
Columns Published: 5/26/2016
MATERIALS: The Problems with Single-Point Data
It’s time for material suppliers to take a fresh approach to providing data. Thankfully, things are starting to move in that direction. Part 12 of 12.
Columns Published: 4/25/2016
MATERIALS:The Problems with Single-Point Data
This real-world scenario explains why molders and their customers need to ‘think in terms of graphs’ and gather as much data as possible before selecting a material for an application. Part 11.
Columns Published: 3/24/2016
MATERIALS: The Problems with Single-Point Data: Part 10
You can predict creep performance of a material over time at a particular temperature by examining how its modulus changes over a range of temperatures.
Columns Published: 2/22/2016
MATERIALS: The Problems with Single-Point Data: Part 9
Time—and not just temperature—governs the behavior of materials under load. Both must be considered when evaluating a polymer for an application.
Columns Published: 1/20/2016
MATERIALS: The Problems with Single-Point Data, Part 8
DTUL tests may have made sense in the 1940s and 1950s, before the advent of dynamic mechanical analysis. But designers and engineers today need better tools.
Columns Published: 12/21/2015
MATERIALS: The Problems with Single-Point Data, Part 7
The industry can choose between continuing to perform DTUL tests that provide single points that are part of a curve never seen, or perform the test that provides the entire curve.
Columns Published: 11/23/2015

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