New polymer filament for radiation shielding applications
Shawn Martin | February 03, 2020Additive Composite and Add North 3D’s new polymer composite, Addbor N25 is a co-polyamide boron carbide composite material. Produced as a filament for 3D-printing applications, this new material serves as an effective alternative to cadmium-based products for radiation shielding and collimator applications.
Particles of boron carbide in Addbor N25 provide effective absorption of neutrons. This allows it to shield stray radiation. It can be readily fabricated into complex shapes serving a multitude of applications in the nuclear industry as well as other applications where radiation sources are used.
Addbor N25 was made commercially available in January 2020. It is the first in a range of radiation shielding materials currently being developed by Additive Composites. These advanced materials are a replacement for toxic materials, like cadmium, which are being banned for most applications.
One should be concerned about the use of a polymeric material for shielding applications given the long history of such materials breaking down in radiation environments and losing their structural integrity. Ultimately, this could affect the material's intended shielding capability over long periods of time.