Magnum Venus Plastech PATRIOT SSB Auto - Manual (Page 9)

Patriot SSB Auto Instructions Issue 05 30/06//08 Page 9 of 43
order to determine this gel time exactly at the ambient temperature and for selected
catalyst ratio.
To carry out a mix and gel test set the desired catalyst ratio and then simply follow the
same procedure from stages 3.9 to 3.13 above but direct the mixed resin safely into a gel
test container. Once the resin mix sample has been dispensed and the machine has
stopped, place the resin outlet pipe securely into the waste container before flushing the
head and pipe.
3.15 General notes on gel time.
a/ It is wise to set and confirm gel times at least 30% longer than mould fill time
b/ Remember that UP resin will gel twice as fast for a 10°C increase in resin temperature.
c/ Be aware that cool resin is significantly more viscous than when at normal room
temperature. In these circumstances allow more time to fill the mould and thus more time
for gel time is needed to ensure mould fill without pre gel condition.
d/ As a guide, MVP’s experience has shown a general UP low viscosity resin suitable for
injection has given the following general specifications on gel time
Using 6% strength Cobalt Naphthalate ( 6% CN) as the primary accelerator and AAP
catalyst
0.1% CN = 1 hour gel time with 1% AAP catalyst
0.2% CN = 20-30 minutes gel time at 1 % AAP catalyst
0.3% CN = 15-25 minutes gel time at 1% AAP catalyst
A typical 20 minute gel time would be formulated with 0.2% CN with 2 % AAP catalyst
ratio setting.
These figures are given as a guide and must be checked for your chosen UP resin
system. Some resins are supplied already accelerated however users often add more CN
accelerator to speed u the resin gel time if found too slow.
4.0 Machine Operation
4.1 RTM or Light RTM operation
4.2 Adjust Catalyst ratio to required setting
4.3 Attach Mould to Mixer output point using 10 mm nylon pipe or via Autosprue® or
Turbo Autosprue brass quick connect. IMPORTANT –Ensure this is locked into position.
Notes a/ Additional lengths of 10mm pipe are available from MVP Ltd.
b/ The TAS 4mm red signal pipe is connected to the SSB chassis connection on
the left hand side 4mm central connector marked Autosprue signal.
Note- do not mistakenly connect to the lower 4 mm chassis connector as this
is a remote start optional connection and if connected to the Turbo AS it will
actually start the machine.