PU Measurement Technology

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PU Measurement Technology
FOAMAT
Resimat
SubCASE
SubFoam
2
Foam Qualification with FOAMAT

• Measurement of
• Rise height
• Temperature
• Pressure
• Curing
• Weight loss
• Viscosity

Patent 19730891
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Foam Pressure Measurement (FPM)

• Simultaneous measurement of rise height,
  pressure, and temperature
• Determination of the gel point
• Replaces standard test cups
• Quick foam release mechanism

Rigid Foam
pressure
gel point
Patent 19730891
4
Curing Monitor Device (CMD)
Selfskinning Foam
resonance
curing
Patent 19730891

• Dielectric polarization measurement of rising
  foams
• Curing and resonance monitoring during foam
  formation

• Integrated into the Foam Qualification System
  FOAMAT
• Sample preparation as for pressure measurement
  with FPM

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Balance Integration

• Recording of exact sample weight
• Weight loss measurement during the foaming
  process
• Density calculation
• Use of standard laboratory balances

Rigid Foam
weight loss
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Vicosity Determination
Physical model of Hagen-Poiseuilles equation

• Viscosity calculation using FOAMAT pressure and
  rise height curves
• Evaluation model avoids slip effects and gives
  continuous viscosity / time curves

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Using the FOAMAT System
1. Alignment
3. Mixing
2. Weighing
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Using the FOAMAT System
4. Pouring in
6. Test ready
5. Measuring
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Test Results
Selfskinning Foam
master
height
temperature
diel. polarization
pressure
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Pot Life and Curing Monitor

• SubCASE
• Dielectric polarization measurement
• Core temperature measurement
• Controlled surface temperature
• Replaceable cardboard test container

Patent pending
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Measurement Principle
SubCASE Pot Life and Curing Monitor
cardboard cylinder
cling film
TC
polarization sensor
C.A.S.E.
flange
base plate
temperature sensor
heater
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SubCASE Test Results
Casting Compound
POT LIFE
surface temperature
diel. polarization
CURING
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SubCASE Test Results
Curve Comparison
__ standard __ 200 catalyst
temperature
diel. polarization
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Viscoelastic Foam Testing

• Resimat
• Pressure relaxation during compression
• Recovery kinetics after release
• Adjustable strain by mechanical alignment
• Appearance calculated by software RESIMAT

Patent pending
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Resimat for Viscoelastic Foam
Sensor
Sensor
Pressure plate
Sensor
v
Ho
H(t)
Magnet
Magnet
Magnet
Magnet
Referencesurface
Magnet
Magnet
F
1. Positioning
3. Recovery
F Force
2. Compression
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Resimat Test Results
RECOVERY
COMPRESSION
thickness
force
recovery rate
compr.height
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Resimat Test Results
Viscoelastic Foam
RELEASE
APPEARANCE
thickness
recovery rate
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SubFoam Puck

• On-line slabstock production control
• Core temperature measurement
• Curing monitoring during foam formation
• Radio controlled data transmission
• Permanent internal data storage

Patent pending
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SubFoam Sensors
Temperature Measurement
Curing Monitor
core
surface
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SubFoam Test Results
Slabstock Foam
core temperature
surface temperature
CURING
diel. polarization
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Communication Data
Format Messtechnik GmbHIm Schlehert 26D-76187
Karlsruhe, Germany Phone [phone]Fax
49-721-5311844E-mail info_at_format-messtechnik
.de www.format-messtechnik.de