Dynisco 4004 User Manual

small resulting in precise flow rate measurements. Long flags for slowly
flowing material can make for extraordinarily long tests and the material may
actually degrade substantially during the test.
Dynisco Polymer Test provides 1/8" and 1/2" Non-ASTM flags in addition to
the standard 1/4" and 1" flags to provide more flexibility in the time needed to
traverse the flag (B time). Use the following table to aid your selection of the
proper flag.
Flag Selection Table
MFR MFR Flag Flag travel
Min Max Length Time Range
g/10m g/10m cm minutes
0.15 1.0 .635 29 - 4.
0.15 1.0 .3175 14 - 2
1.0 3.5 .635 4.3 - 1.2
1.0 3.5 1.27 8.7 - 2.5
3.5 10 0.635 1.2 - 0.4
3.5 10 1.27 2.5 - 0.9
10 25 1.27 0.9 - 0.4
10 25 2.54 1.8 - 0.8
25 50 2.54 0.8 - 0.4
50 300 2.54 0.4 - 0.06
From the first two lines 0.15 to - 1 g/10 min. expected MFR we can see we have
the option of running with a 0.635 cm (1/4") Flag or a 0.3175 cm (1/8") flag. If
the flow rate is close to 0.15 the overall test time would be around 29 minutes! If
we use the 1/4" flag instead of the 1/8" flag. The experimental run time would be
halved.
The Actual Run
How to do it: Step by Step
Instrument Prep
Loading the Barrel
The standard Dynisco Polymer Test In-house test procedure section in this
manual is an abbreviated version of what follows). Press EDIT and verify
all entered program data values are correct. Make sure all equipment has
been properly cleaned. Insert piston rod and let the system come to
temperature and wait for temperature lock-in. Lock-in has occurred when
the display reads “READY”. Heat up and lock-in must occur with orifice
and piston rod in the heat chamber.
During heat up the program may be adjusted and the Operator. and Sample ID
can be entered by pressing the ID key.
Remove the piston rod and lay on a cotton cloth. Check to see if the die is at
the bottom of the barrel. Fill heat chamber with an appropriate charge or use
about 5 grams if nothing is known about the material). Put the sample into the
10 ml beaker. Add about two-thirds of the material into the barrel, using the
brown fill funnel. The loading should be done in two increments, the first
consisting of approximately 60% of the material. Tamp down the material with
Series 4000 Melt Indexer Operation Manual Method "B" Run  35

Dynisco 4004 Specifications

General

Brand	Dynisco
Model	4004
Category	Laboratory Equipment
Language	English