Sirris Smart Coating workshop - Easy-to-clean and Self cleaning Coatings - 19 May 2011 - Durable...
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Transcript of Sirris Smart Coating workshop - Easy-to-clean and Self cleaning Coatings - 19 May 2011 - Durable...
Durable easy-clean surfacesfor the building industry
Franz HörzenbergerOCAS, ArcelorMittal Global R&D (Ghent, B)
Sirris Smart coating lab – May 19, 2011
Confidential
Who are we?
“Onderzoekscentrum voor de Aanwending van Staal”
140 researchers, technicians and support staff
yearly budget of ± 20 million €
2 locations: Zelzate and Zwijnaarde
1 of the 14 R&D centers of ArcelorMittal
Dirty surfaces impact
… aesthetics (colour/gloss change)
… visibility (impact on transmission)
… energy savings (heat flow)
… yield (conversion of sun light)
It is about dirt …
Pollution of the surface over time greatly impacts the aesthetics, visibility and transparancy
… and a new concept to keep surfaces clean
Various concepts on material surfaces have been put forward for improving the anti-stain properties.
activation by UV(sunlight)
Active TiO2
Oleophilic
Oleophobic
HydrophobicHydrophilic
‘Sol/gel’Siliconepolymer
F-basedsolutions
Limitations related to current available technologies limit a broad commercial roll-out
Various concepts on material surfaces have been put forward for improving the anti-stain properties.
LANCAS Easy-clean technology is based on the unique combination of durable hydrophilic and oleophobic properties of the coating.
Active TiO2
Oleophilic
Oleophobic
HydrophobicHydrophilic
L A N CA SEasy-clean
‘Sol/gel’Siliconepolymer
F-basedsolutions
LANCAS combines unique properties to ensure optimal and durable easy-clean surfaces
… and a new concept to keep surfaces clean
0
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20
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50
60
70
80
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0 7 14 21 28outdoor expsoure, days
cont
act a
ngle
, °
Reference
easy clean
A new concept based on nano-technology
LANCAS Easy-clean functionality is obtained by applying a transparent nano-meter thick coating to the substrate material and provides the surface with highly improved and durable anti-stain properties.
The LANCAS Easy-clean coating can be applied for both in- and outdoor applications.
Oxide type nano-coating
Organic coating (OPTIONAL) Top-coat (PE, PUR, PVDF) Clear-coat (PE, AC) Powder coat (PE, EP)
Substrate Metal: steel, aluminum, zinc, … Wood: painted, laminated Textile: synthetic (nylon, …) Plastics: PE/PP/PC/PS/PMMA/PVC/… Glass
LANCAS Easy-clean coating is a nano-thin and invisible coating
A new concept based on an efficient process
LANCAS Easy-clean process techology has distinct competitive advantages compared to the alternative application technologies
L A N C A SEasy-clean
log t, s1 10 10 ² 10 ³ 104
105
50
100
150
200
250
T, ° C
sol/gelnano
sol/gelnano
― Applicable to a wide range of substrates, including heat-sensitive substrates
― Wide process-speed window and atmospheric processing allows for in-line processing on existing production lines
― Green process (no VOCs, dry)
LANCAS Easy-clean process allows for in-line istallations and cost-competitive application
sec min hours
An active clean effect on short term
Outdoor testing demonstrates an immediate and a highly visible effect of LANCAS Easy-clean coating on painted metal.
Samples illustrate the dirt pick-up and effect of rain on the reference panel (left side) and a panel with the easy-clean coating (right side)
Reference LANCAS Easy-clean
stripes
Painted metal samples
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after 1 month outdoor exposure in Liege/Belgium
LANCAS Easy-clean effect immediately results in improved aesthetics of the substrate
An active clean effect on mid term
Outdoor testing demonstrates a durable effect of
LANCAS Easy-clean coating on painted metal
LANCAS' Easy Clean
Reference
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0 50 100
L*-v
alue
(whi
te/g
rey
colo
urat
ion)
outdoor exposure (# weeks)
LANCAS Easy-cleanReference
Original aesthetics of painted surfaceis kept during 2 years and over
LANCAS Easy-clean technology results in long lasting anti-stain properties
An active clean effect on mid-term
PC Reference
PC LANCAS'
Easy Clean
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0 5 10 15 20 25L* v
alue
(whi
te/g
rey
colo
urat
ion)
duration (# weeks)
Outdoor testing indicates a durable effect of LANCAS Easy-clean coating on transparent plastic materials (e.g. polycarbonate, PMMA, …)
Lancas Easy-clean coating ensures higher transparency over long period of time thanks to avoidance of dirt pick-up by the surface.
In addition, the initial transparency can be increased by the nano coating
Example of application:
LANCAS Easy-clean technology can provide improved transmission on transparant substrates
An active clean effect on mid term
During the outdoor exposure (Ghent, Belgium 2010/2011) the surface of reference glass becomes less transparent due to dirt accumulation while an Easy-clean glass surface keeps the transmission almost constant over time.
Remark: the LANCAS Easy-clean layers for this sample have not been optimised for good easy clean behaviour and increase of transmission.
ConfidentialLANCAS Easy-clean coating avoids transmission reduction by dirt adhesion on transparant substrates
70%
80%
90%
100%
0 0.5 1 1.5 2 2.5 3 3.5
outdoor exposure months
tran
smis
sion
glass reference Easy Clean glass
Standardised lab testing by 1 preveals excellent cleaning efficiencyfor LANCAS Easy-clean layers.
– Lab application of specified city dirt and simulation of rainfall
(without activation by UV light)
Reference Polycarbonate
LANCAS Easy-clean Polycarbonate
An efficient easy clean effect
< 15% cleaning effect 85 - 95% cleaning effect
1 Cleaning Technology institute in Krefeld/Germany
LANCAS Easy-clean coating ensures dirt on the substrate is removed with rainfall
An active clean effect on long term
Resistance to accelerated ageing (under high UV, T, humidity level) of minimum 4000 hours indicates a minimum 5 - 7 years lifetime. Extended testing on-going.
Confidential
carbon black testing area
accelerated UV testing area
Reference
LANCAS Easy-clean
Reference
LAN
CAS
Easy-cleanReference
Test:impregnation with carbon black solution
Accelarated testing indicates the durable effect of the LANCAS Easy-clean technology
Standard cleaning has no impact on the LANCAS Easy-clean coating.
Confidential
An easy clean effect
LANCAS Easy-clean coating makes cleaning easier.
Method Load # Cycles Result
Scotch-brite
soft
No 1000 OK
0.2 kg 1000 OK
Scotch-brite
abrasive
No 1000 OK
0.2 kg 100 Attack
Nylon brush
No 1000 OK
0.2 kg 1000 OK
Easy Clean stainless
(detergent)
stainless (detergent)
stainless (no
detergent)
0102030405060708090
100
0 100 200 300%
rem
oval
of s
unflo
wer
oil
Flow cleaning time (s)
LANCAS Easy-clean technology facilitates removal of dirt and oil
Standardised lab testing by preveals high cleaning efficiency for LANCAS Easy-clean layers.
– Lab application of specified household dirt (oil, mineral, soot) and water spray (without activation by UV light
Reference Polycarbonate
LANCAS Easy-cleanPolycarbonate
An easy clean effect
< 10% cleaning effect ca. 60% cleaning effect
LANCAS Easy-clean coating significantly reduces dirt adhesion and thus easiness of cleaning
An active clean effect on other materials
Reference
LANCASEasy-clean
anodiuzed aluminium PVC laminated wood
Easy Cleanable surfaces have been designed on a wide range of materials.
– metals, plastics, wood, textile, glass, stone, …
LANCAS Easy-clean technology can be applied on a wide range of – heat sensitive – substrates
Confidential
Summary
Durable easy clean(able) surfaces have been designed on various construction materials with a predicted lifetime of more than 5 – 7 years
LANCAS specific easy-clean surface actively hinders the dirt pick-up by the substrate, results in cleaner surfaces that are easier to clean.
The patented technology for LANCAS Easy-clean technology relies on a flexible atmospheric process with a wide process window, allowing the use on heat sensitive materials.
OCAS N.V. – LANCAS, Pres. J.F. Kennedylaan 3, B-9060 Zelzate
e: [email protected] www.lancas.be