1 Topic by Tronetix

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Topic: Looking for someone to extrude material samples for testing purposes

I have various conductive plastic material in pellet form used for injection molding I would like to have extruded as 3mm filament to test in my printers.  If you have extruder and/or are interested in being part of this project, let me know.

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2 Reply by elmoret

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Re: Looking for someone to extrude material samples for testing purposes

A datasheet would be helpful for sure - melt temp, MFI, embedded particle size, etc.

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3 Reply by crisdo98

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Re: Looking for someone to extrude material samples for testing purposes

I was of the impression that injection moulded pellets had the wrong viscosity to extrude into filament.

4 Reply by Tronetix (edited by Tronetix 2013-07-30 00:33:39)

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Re: Looking for someone to extrude material samples for testing purposes

elmoret wrote:

A datasheet would be helpful for sure - melt temp, MFI, embedded particle size, etc.

Temps range from 200-290C for melting. particle size would be nano scale. Some of the materials use fiber but I do not know exactly in what manner or size. All are intended for injection molding and specs associated are based on injection pressures, heat and time. Basically, a mixture of inert conductive dopants with either PBT Thermoplastic resin, Nylon 6/6, PC/ABS, or Polypropylene resin.

The metals are either Nickel, Stainless steel with carbon fiber or Steel Fiber with either PC, ABS, PP, PBT materials and resins.
I do not know about injection moulded pellets having a different viscosity. Other pellets I've seen appear to be used for both. This pellet manufacturer does state both injection and extrusion use but only provides specs on injection.

I would be more worried about the steel fibers wearing out extruder nozzle. But like I posted, this would be an experiment. If I had an extruder, I would run some tests.

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5 Reply by elmoret

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Re: Looking for someone to extrude material samples for testing purposes

Do you know the MFI? I could estimate the output rate.

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

6 Reply by supraflyer

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Re: Looking for someone to extrude material samples for testing purposes

I would be interested in testing the material. I have two extruders setup and one kit I am working on. I would extrude the material for a few dollars a test as the nozzles do wear and new ones would be needed occasionally depending on the needs of filament for consistance diameter.