Dow Coating Materials
DURATRACK™ WH-155 TECHNOLOGY Can a water-borne technology succeed in thick road marking application?
Xavier BRICOUT EMEAI Marketing Manager Dow Coating Materials
Source: Dow 2022
INTERTRAFFIC 2022
DRIVERS IN ROAD MARKINGS
Authorities and customers demand safe visible, durable, and sustainable roads
Estimated European market size (Volume) Safety
Cold plastic
Paint
Urbanization 10%
Sustainability
Source: Dow 2022
2015
Autonomous vehicle
2025 Thermo plastic
®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
2
COLD PLASTIC FEATURES
•
System is designed for durability which resulted in severe compromises on the EHS footprint.
•
Resin has a persistant very stong odor causing discomfort for the applicators.
•
Cleaning and waste disposal require specific treatment (solvent).
•
Cold plastic is growing steadily to meet the increasing demand for durability (14% growth in France in 2021). Hardener (peroxide) manually added
®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
3
Source: Dow 2022
Current available two component solutions for high wear and tear resistance:
Introducing DURATRACK™ WH-155 Technology
®™ Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow.
SIMILAR… BUT DIFFERENT
Alternative to 2K cold plastic (MMA) with 2K water-borne solution
Current technology
Innovative, water-borne alternative
BPO
Cold Plastic Manual
MMA is designed for use in conditions where resistance to wear and tear are of great importance BUT 2k MMA has a • Poor environment • Poor health • Poor safety footprint
• Very persistent odor
®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
DURATRACK™ WH-155
Water-borne cold plastic
Manual
DURATRACK™ WH-155 Technology is an innovative mineral/organic hybrid binder which will consume water within after activation allowing for high tickness waterborne marking (1-3+ mm) • • • •
Highly durable Safer for workers, No persistent odor Easy to apply
• Sustainable * • Easy logistics and storage • Cleaning with water
5
Source: Dow 2022
MMA Resin
Activator
HYBRID TECHNOLOGY PRINCIPLES Water evaporation
High thickness and water-borne
2 – 4 mm
Current Waterborne Technology
Water entrapped due to top film formation • Quick skin formation: not workable • Cracking • Very long drying time (days) • High impact of weather conditions • Heterogeneous structure (gradient) • Softness
Poor performances
2K water-borne cold plastic High thickness and water-borne -
DURATRACK™ WH-155 Technology
®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
Water evaporation
+ Water consumption
Water partly consumed, partly evaporated • Open time : good workability • No Cracking • Short drying time (min) • Moderate impact of weather conditions • Homogeneous structure • Hardness
Excellent performances
6
Source: Dow 2022
Challenge
REFERENCE 2K MMA COLD PLASTIC
Sigmoidal hardening curve: long open time, fast hardening high ability to absorb mechanical stresses over a wide T range
Wet taber: 2x1000g – CS10 – 500 cycles Dry Taber: 2x500g – H22– 1500 cycles
Drying time
28 Open time
12
10000 1,59
1000 100 10
Drying time (hours) 0
50
100
150
200
0,06 Wet
1 Dry
-40
80 40 120 0 Temperature (C)
BK Drying Time (min)
Hardness development (Sh.D)
Taber abrasion test (g)
DMA (3 points bending mode)
2mm WFT – Drying @RT
2mm WFT – Drying @RT
2mm WFT – Drying 7 days @RT
2mm WFT – Drying 28 days @RT
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Source: Dow 2022
28
50 45 40 35 30 25 20 15 10 5 0
E’ (Mpa)
No Mark on top film
2K MMA COLD PLASTIC
Similar application, close hardening curve, better temperature stability, higher stiffness (E’ storage modulus), heat dissipation (E”)
DURATRACK™ WH-155 Technology
Wet taber: 2x1000g – CS10 – 500 cycles Dry Taber: 2x500g – H22– 1500 cycles
No Mark on top film
36 28 Open time
27 12
10000
1,59
1000 100
0,52 0,33
0,06
1
Drying time (hours) 0
50
100
150
200
Wet
10
Dry
-40
80 40 120 0 Temperature (C)
BK Drying Time (min)
Hardness development (Sh.D)
Taber abrasion test (g)
DMA (3 points bending mode)
2mm WFT – Drying @RT
2mm WFT – Drying @RT
2mm WFT – Drying 7 days @RT
2mm WFT – Drying 28 days @RT
®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
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Source: Dow 2022
Drying time
50 45 40 35 30 25 20 15 10 5 0
E’ (Mpa)
48 28
Composition
Impact
2K MMA
DURATRACK™WH-155
Binders
Tg, open time, drying time, …
~ 25% (BA/MMA + Acrylic resin)
~ 40% (acrylic hybrid binder)
Additives
Compaction, drying time, rheology, cracks, retroreflection, color
~ 3%
~ 1%
Fillers / extenders
Rheology, drying time, possible wet Taber results
~ 70% (mainly SiO2)
48% (mainly SiO2)
Pigments
Whiteness, Retroreflection, UV resistance
6 – 10%
0 - 1%
Activator
Workability, drying time
2% (BPO)
3% (Li2SO4 + NaOH)
Solid level
Workability, self-levelling, drying time, cracks
100%
~ 82%
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DOW CONFIDENTIAL - Do not share without permission
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Source: Dow 2022
COMPARISION WITH INCUMBENT TECHNOLOGY (2K MMA)
UTELLE SITE RESULTS
FIELD TRIALS FIELDUTELLE TRIALS SITE UTELLE SITE
Dow Coating Materials
OUR ROAD TRIAL SITE IN EUROPE: UTELLE South of France ~ 5000 vehicles per day (10% truck) 30
120
25
100
20
80
15
60
10
40
5
20
0
0
®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
jul aug sep oct nov dec
Source: Dow 2022
jan fev mar apr may jun
1 year exposure ~ 900 000 vehicles, 1.8M wheel hits
RAINFALL (mm)
TEMPERATURE (C)
Average climatic conditions
Utelle Site unique features: • Winter climate (close to ski resorts) • Summer climate (Southeast France) • Heavy traffic all year (cars/trucks)
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DURATRACK™ WH-155 Technology Field trials
More than 4 years under traffic: RL > 200 mCd/lx/m² - Qd > 150 mCd/lx/m² with 2.4% TiO2 Qd > 150 with 0% TiO2
Serie 148 - RL/QD
6,0
300
250
5,0
200
4,0
150
3,0
Qd
8,0 7,0
6,0
250
5,0 200 4,0 150
3,0
1 year
2 years
3 years
4 years
1st gen, 48% binder, 2.4% TiO2 ~4.4 kg/m² Echostar 25WBP SRT ®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
100
2,0
mrt-17 jun-17 sep-17 dec-17 mrt-18 jun-18 sep-18 dec-18 mrt-19 jun-19 sep-19 dec-19 mrt-20 jun-20 sep-20 dec-20 mrt-21 jun-21 sep-21 dec-21 apr-22
apr-22
dec-21
jun-21
sep-21
mrt-21
dec-20
jun-20
sep-20
mrt-20
dec-19
0,0
jun-19
0
sep-19
0,0 mrt-19
0 dec-18
1,0
jun-18
50
sep-18
1,0
mrt-18
50
dec-17
2,0
jun-17
100
sep-17
RL/QD (mCd/lx/m²)
350
9,0
1 year
2 years
3 years
Source: Dow 2022
RL Av
300
7,0
Serie 146 - QD
Wheel hits (M)
350
400
LUMINANCE (mCd/lx/m²)
4 years 6.9 M
8,0
Wheel hits (M)
400
4 years
1st gen, 48% binder, 0% TiO2 ~4.4 kg/m² No drop-on 12
DURATRACK™WH-155: Impact of TiO2 on Retroreflexion CONCLUSIONS
IMPACT OF TiO2 CONTENT - DURATRACK 47% binder - 4.4kg/m² - Echostar 25 WBP SRT Series 148#Z2 / 150#5 / 146#X1
400
•
Even with No TiO2 (and no alternative pigment), RL is above 100 mCd/lx/m² up to 4 years
•
TiO2 amount (between 0.98 and 2.4%) has no visible impact on retroreflexion
•
Excellent Glass Bead Retention even after 46 months exposure under traffic (~ 6.5 Millions wheels hits)
300
2.4% TiO2 250
0.98% TiO2
200 150 100
0% TiO2 50
Source: Dow 2022
RETROREFLEXION (mCd/lx/m²)
350
0 0
10
20
30
40
50
60
EXPOSURE TIME (Month) * 148#Z2 contains also 4.1% premix Glass beads - 150#5 and 146#X1 does not have premix - ALL these formulations do NOT contain any other white pigment
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Footnote
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NEW REGULATIONS IN EUROPE TiO2 Labelling
MMA Labelling
ECHA
ECHA
Chemical name
EC No
‘022-006002
Titanium dioxide; (in powder form containing 1% or more of particles with aerodynamic diameters ≤10 um
236-675-5
CAS No
1346367-7
Hazard class and category code(s) Carc. 2
EUNOMIA
Labelling
Hazard statement code(s)
Pictogram signal word code(s)
Hazard statement code(s)
H351 (inhalation)
GH508 Wng
H351 (inhalation)
Suppl. hazard statement code(s)
As of 1 October 2021, following Delegated Regulation (EU) 2020/2017, new classification and labeling requirements enter into force: • Product containing 1% or more of TiO2 in powder form, particle size <10µm • Labeling H351 (inhalation) GHS08 ®™ Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
proposed to classify methyl methacrylate (MMA) as Resp. Sens. 1; H334 + GHS08
Source: Dow 2022
Classification Index No.
Microplastics
Low quality road marking can potentially generate more secondary microplastics (topic under investigation)
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Conclusion
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CAN A WATER-BORNE TECHNOLOGY SUCCEED
5 4 3
Low traffic disturbance
Low application cost
2 1 0
Ecological WH-155
High durability TH
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CP
Material preparation 5 4
3
Low equipment investment
2
Application
1
Source: Dow 2022
Low life cycle cost
Applicator view
Road authority view
in thick road marking application?
0
Low application cost
Safety of workers WH-155
TH
CP
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