Characterizing the particle size and shape of polymer powders for additive manufacturing

Investigating polymer feedstock properties in powder bed fusion additive manufacturing processes using automated image analysis

contributed by Malvern Panalytical | 10/26/2021

This Application Note looks at how particle size and shape distributions measured on the Morphologi 4 provide insight into the density and flow data obtained from standard powder tests for three different polymers used in PBF additive manufacturing.

In PBF additive manufacturing processes the quality of the powder bed is a controlling factor for manufacturing efficiency and final part quality. This study found that a single Morphologi 4 measurement provides statistically relevant particle size and shape information that is complementary to the data derived by four standard tests of polymer powder packing density and flowability. Access to this analysis can give manufacturers and users quick and valuable insight into how to optimize their feedstock and process parameters. The Morphologi 4 can also be used to study polymer recycling in PBF processes, which we cover in another application note.

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