Foaming FDM Filament
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Basics
- FDM Filament that has had a Blowing Agent added to the filament
- Typically it is heat activated, so heat can control the foam amount
- A Relatively New Concept
- Some "Wood" Filaments use this method to allow for a similar finish, and properties to wood (Although some do use actual cellulose)
- Can allow for low density parts
- MAY allow for 3D Printed Insulation if a Higher Temperature Plastic, and PERHAPS a higher temperature blowing agent
Things to Look Into
- Also look into Gas/Supercritical Carbon Dioxide injection as an option
- Determine all it's Mechanical Properties as well as it's R Value etc
- Multimaterial 3D Printing with it/how it behaves in that application. (Could one make a foam lattice wing with a CF-PC Coating for Abrasion Resistance etc)
- Impact of Humidity on FDM 3D Printing (how does this filament compare to others)