In the last episode, we ended with an explanation of the effect of fillers on rheology and processing. Today, we will talk about the effects such fillers can have on the part properties as well as processing using Laser Flash Analysis (LFA).
In this episode, will correlate the results that are relevant for the filament extrusion to the melt rheology inside the material extrusion head using the capillary rheometer.
Based on our past episode about analysis methods used in material extrusion (ME), we are going to talk about the relevant parameters for production of the filament used in ME today. Learn how to measure the shear-dependent viscosity using the ROSAND capillary rheometer.
Material extrusion is an additive manufacturing process in which material is selectively dispensed through a nozzle or orifice. Today, Dr. Natalie Rudolph will be focusing on analysis methods used in material extrusion (ME).
Dr. Natalie Rudolph explains the basics of shrinkage and warpage of plastic parts and introduces the right analytical instrument to determine the shrinkage potential of different materials. She gives important tips for home users to avoid warpage and curling during the 3D printing process.
Dr. Natalie Rudolph explains which aspects have to be taken into account to find the best print temperature for your 3D printer. Most importantly, she introduces the Modified Melt Flow Test, which allows home users to easily determine the perfect print temperature for any given filament. All that is needed are a stop watch, a kitchen scale and a sharp object, e.g. a spatula.
Dr. Natalie Rudolph discusses why there are different printing temperatures for one material (e.g., ABS or PLA), which you bought from different filament suppliers. She shares insights into the detection of the melting and softening properties of filaments with analytical instruments and gives tips on how home users of 3D printers can use this knowledge.