Advanced UV System
P-PTD120
1
Advanced UV System
P-PTD 120
 Peltier controlled optical transparent base plate
 Can be combined with Peltier hood (H-PTD 200)
 Temperature range 0 – 120°C
 Has a holder for a UV light guide underneath
 External UV-source can be connected
P-PTD 120 / UV:
Not just for UV-Curing !
Can be used for:
Flow visualization and microscopy
2
Advanced UV System
P-PTD 120
Features:
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Fast data acquisition with DSO
Software controlled shutter
Sample is protected against external light sources and day light
Closed system, purging with inert gas possible
Temperature calibration routine with certified temperature probe
Sensitive normal force control (auto shrinkage compensation)
Auto gap control (compensation for thermal expansion of geometries)
Compliance correction
UV curing in combination with fast, accurate and gradient reduced
temperature control
 Perfect system for applications where the sample first is stabilized
(Gel) with UV and then cured with temperature
3
Viscoelastic Behavior
Time - dependent UV Curing
coatings
polymers
UV – reactive resin, fast curing reaction
1010
rigid finally
since
G' > 1 GPa
(already after
t = 10 s)
Pa
10
lg
G'
lg
G''
106
1
104
0.1
102
0.01
curing 
0.01
0.1
1
time t
4
lg tan
10
s
100
MS - PP 08
g = 0.02 %
ω = 63 rad/s
( = 10 Hz)
tan = G'' / G'
Viscoelastic Behavior
Time - dependent UV Curing
printing inks polymers
108
Pa
UV printing ink
at variable
UV - intensities
106
lg
G'
curing process 
104
I = 50 / 40 / 30 / 20 / 10 / 5 / 4 / 3 / 2 / 1 %
102
0
20
40
60
80
time t
5
100
120 s 140
Summary:
Faster
curing process
with increasing
UV light intensity I
(here for I = 1 to 50%)
Advanced UV System
P-PTD 120
coatings
curing 
G' > G''
UV resin
105
„soft touch“,
since finally
G' = 0.1 MPa
gel point
G' = G''
Pa

103
lg
G'
lg
G''
50
T
45
101
°C
G'' > G'
bottom: plate of quartz-glass
40
35
10-1
g = 0.1 %, ω = 10 rad/s, T = +23°C
0
400
800
time t
6
polymers
1200
1600
s
30
2000
temperature
peak:
end of the
exothermic
crosslinking
reaction
Advanced UV System
P-PTD 120
Application: Flow Visualization I
7
Surfactant solution with air bubbles
Advanced UV System
P-PTD 120
Application: Flow Visualization II
8
Tooth Paste