electric dissipative polyurea surfaces for new fields of...
TRANSCRIPT
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Electric dissipative polyurea surfaces for
new fields of application
ANDREAS EICHFELDER, BASF SE
Dr. KLAUS BREUER, BASF SE
ALAIN VAN OORSOUW, BASF POLYURETHANES BENELUX BV
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Conductivity promotors
Tested coats and application equipment
Mechanical and electrical properties imediate and exposed to accelerated weathering
Summary and recommendations
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Isolative and Conductive material
Metals
Cond. Carbon Black
Carbon Nanotubes
Rubber
Thermoplasts
Coatings
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Characteristics
Liquid salts
m.p. < 100°C (often: < r.t.)
Aromatic, planar structure
Electric conductivity
No vapor pressure
High affinity to polar polymer
matrix (hydrogen bonds)
Building the bridge!
Value proposition
■ Basionics:
• Permanence
• Transparency
(compatibility)
• High effectiveness
(resistivity)
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Coating
Products selected for the investigation
Application
Graco H-XP2 (machine)
pressure 170 bar
Temperature poly & iso 75°C
Graco AP (spray head, air cleaned)
Mixing chamber AR2929
Free film after 15 min
Graco H-XP2 (machine)
pressure 180 bar
Temperature poly & iso 75°C
Graco AP (spray head, air cleaned)
Mixing chamber AR2929
Free film after 2 hours
Dissolver with disposable mixer head
5 min without vortex
ambient temperature
Seamless application on siliconated steel plate
Free film after 12 hous
Aromatic Spray Polyurea:
Elastocoat C 6335/101/7043 + ISO 136/75
Surface resistivity: Volume resistivity:
7 E+13 Ohm/sq 1 * E+12 Ohm*cm
Aliphatic Spray Polyurea:
Elastocoat C 6330/103 + ISO 196/25
Surface resistivity: Volume resistivity:
5 E+13 Ohm/sq 5 * E+11 Ohm*cm
Aliphatic Polyaspartic:
Elastocoat C 6430/100 + ISO 196/19
Surface resistivity: Volume resistivity:
2 E+11 Ohm/sq 2 * E+10 Ohm*cm
PDA Europe 2013 Annual Conference – Rome, 18-20 November
The variety of liquid conductivity additives
trade name
supplier
chemical nature test system dosage
Basionics FS 13
BASF SE
hydroxy
imidazolium salt
polyaspartic
aromatic polyurea
2.5% and 5%
3% and 6%
Basionics FS 21
BASF SE
hydroxy
ammonium salt
polyaspartic
aliphatic polyurea
2.5% and 5%
3%
Basionics LQ 01
BASF SE
non reactive
imidazolium salt
polyaspartic 2.5% and 5%
Basionics VS 03
BASF SE
non reactive
imidazolium salt
polyaspartic
aromatic polyurea
aliphatic polyurea
2.5% and 5%
3% and 6%
2.5% and 5%
LancoStat LI 100
Lubrizol
fatty acid
ammonium salt
polyaspartic 2.5% and 5%
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Initial results in …
… polyaspartic formulation
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Initial results in …
… aliphatic polyurea formulation
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Initial results in …
… aromatic polyurea formulation
PDA Europe 2013 Annual Conference – Rome, 18-20 November
At a glance!
aliphatic polyurea
Elongation ~150%
polyaspartic
Elongation ~100%
aromatic polyurea
Elongation ~450%
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Accelerated Weathering System
Equipment: Xenotest 1200 LM (Atlas)
Method: non turning mode operation
Climate: Middle Europe
18 min rain / 102 min dry
Irradiance: 300-400nm; 60W/cm²
BST: 65±3°C
„Equivalent“: 5000h Xenotest
~ 6.5 years Middle Europe
~ 3.5 years Florida
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Visual changes at a glance…
… after 1000 hours exposure.
Bild fehlt
Polyaspartic Aliphatic Polyurea Aromatic Polyurea
significant degradation no degradation no degradation
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Polyaspartic Basionics VS 03 Basionics FS 13 Basionics FS 21
Volume resistivity 4 E +11 Ωcm 4 E +11 Ωcm 4 E +12 Ωcm
Surface resistivity 8 E +13 Ω 2 E +14 Ω 1 E +14 Ω
Aromatic Polyurea Basionics VS 03 Basionics FS 13
Volume resistivity 2 E +08 Ωcm 3 E +08 Ωcm
Surface resistivity 6 E +08 Ω 1 E +09 Ω
Electrical properties after artificial weathering
Aliphatic Polyurea Basionics VS 03 Basionics FS 21
Volume resistivity 1 E +10 Ωcm 3 E +11 Ωcm
Surface resistivity 6 E +12 Ω 1 E +14 Ω
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Summary 1: Handling and Application
Handling:
•liquid additive – easy dosage
•incorporation in production or at site
•allways protect the additive from humidity
Application:
•incorporation into polyol part
•agitation while spraying
•standard equipment
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Summary 2: Performance and Properties
Performance:
•durability and maintenence
•low additive dosage
•dependence of paint system
Properties:
•electrical properties
•mechanical properties
•optical properties
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Summary 3: New fields of application!
Aliphatic Polyurea
Polyaspartic
Aromatic Polyurea
Hand applied antistatic or ESD application
no exposure to weather
improvement of electrical properties
Machine applied antistatic or ESD layers
no exposure to weather
improvement of electrical properties
Machine applied antistatic or ESD layers
calculated exposure to weather
warehouse, plants, tank farms …
PDA Europe 2013 Annual Conference – Rome, 18-20 November
Electric dissipative polyurea surfaces for
new fields of application
ANDREAS EICHFELDER, BASF SE
Dr. KLAUS BREUER, BASF SE
ALAIN VAN OORSOUW, BASF POLYURETHANES BENELUX BV