Materials

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Published: 1/20/2016

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.

Published: 12/21/2015

RECYCLING: The Importance of Quality-Assurance Testing for Recycled Materials
Consider investing in these tools to ensure your material makes the grade.

Published: 12/21/2015

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.

Published: 10/26/2015

MATERIALS: The Problems with Single-Point Data--Part 6
Data sheets can be limited in the information they provide on how the material performs at elevated temperatures.

Published: 9/25/2015

MATERIALS: Impact Testing: The Problems With Single-Point Data
Knowledge of test conditions and graphical data showing the course of the impact event can help provide engineers and designers with the information they need to make informed choices about material toughness.

Published: 8/17/2015

MATERIALS: The Problems with Single-Point Data
In plastics, notched Izod and Charpy test results have been complicated by the way they are reported.

Published: 7/16/2015

MATERIALS: The Problems With Single-Point Data
Polymer properties are not constant as a function of temperature, and even small temperature changes can affect properties.

Published: 7/1/2015

RECYCLING: Compatibilizers Create New Recycle Feedstream Value
Generally confined to prime material applications, these additives are helping recyclers improve yields of mixed-material bales.

Published: 7/1/2015

MATERIALS: The Problems with Single-Point Data
Engineers who are used to working with metals are surprised that plastics cannot operate as close to their yield points as can metals. The yield point is not enough to tell you how the material reacts to stress.

Published: 5/25/2015

MATERIALS: The Problems with Single-Point Data
Properties are generally provided at a single temperature on a data sheet. But do those properties stay the same with changing temperatures? Of course not.