Tag: Coefficient of thermal expansion • NETZSCH

Estimating Warpage of Selective Laser Sintering Parts Using Thermomechanical Analysis

February 22, 2021February 22, 2021 by Dr. Natalie Rudolph and Doreen Rapp

The plastics used in Selective Laser Sintering (SLS) have a higher thermal expansion when compared with other materials. Therefore, it is important to know how the dimensions of an SLS part change at different temperatures during the build and during use. The higher the thermal expansion coefficient, the more prone are the parts to warpage or curling and the build-up of residual stresses. Learn more!

What TMA Measurements Can Tell About Filler Orientation in Injection Molding

October 23, 2020October 7, 2020 by Dr. Natalie Rudolph

Fillers have long played an important role in the polymer manufacturing industry. An important property to measure how the filled material changes in length when being heated or cooled is the coefficient of thermal expansion. Knowledge about this material behavior is required to be able to determine important design values. Learn how the flow field and sample preparation influences the property and see how measurements with the TMA 402 F3 Hyperion® Polymer Edition are carried out.