User:Matthew R Skorski/Notebook/Cellulose Summer 2014/2014/06/09

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Entry title

Purpose: To create more casting samples, more NH4-CNC, and create filaments from the previous samples.

Safety and Procedure: Casting and NH4-CNC are same, see 5/19/2014 and 6/6/2014. To make the filaments the casting with the additive first has to be cut into small pieces. Then, a certain mass of the casting fragments are weighed out and combined with ABS in the extruder. The filament made is then labeled and set aside. Fresh ABS is added in between runs of the casting fragments in order to flush out the system.



 Mass %	        Mass NH4-CNC	Mass ABS
 10.0% #1	0.1497 g	0.8475 g
 10.0% #2       0.2494 g  	0.7502 g
 20.0% #1	0.5000 g	0.4992 g
 20.0% #2	0.5000 g	0.4992 g

The #1 samples used NH4-CNC made on 6/4/2014 and the #2 samples used NH4-CNC made on 6/5/2014

The TiO2 castings from 6/6/2014 were cut up in preparation of making filament.

0.4942 g of the 15% Tio2 was added to 4.0031g of the ABS pellets in the extruder in an attempt to make filament. Later an, additional 2.0064 g of ABS was added.

When the TiO2 and ABS was added into the extruder the plastic wouldn't extrude so the additional ABS (listed above) was added. The additional ABS did not help the filament come out of the machine. The machine was tipped over and all the pellets and TiO2 removed. The temperature was ramped from the normal 180 C to 202 C in order to extrude the plastic. At the high temperature the plastic did finally come out, although much softer than normal.

It is suspected the TiO2 clogged the tip of the extruder. This is because solid chunks of TiO2 could be seen in the filament as it was extruded.