jotun presentation
DESCRIPTION
General InformationTRANSCRIPT
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Zinc PrimersZinc PrimersJotunJotun
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Agenda
• Corrosion• Corrosion protection with Zinc• Technology• Zinc epoxy versus Zinc silicate • Zinc confusions• Zinc content in Jotun zinc primers • Barrier and Resist projects
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Corrosion• Corrosion is a reaction between
• Material and
• Surrounding environment
…….under formation of corrosion products
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Production and degradation of steelReaction between the material and
the surrounding environment takes place
The presence of Water / Humidity and Oxygen is a prerequisite for corrosion of steel
Plates, pipes,profiles, etc.
Ener
gy
Manuf
actu
ring
Water /Hum
idity
Oxygen
Raw materialIron ore Rust
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Manufacturing / refining - brings the material to a higher energy level
• The resistance against oxidation (corrosion) varies for
different materials
• When brought in contact with an electrolyte (aqueous
solution that conducts electricity) some metals easily
dissolve into ions. These are called “Base metals”
• “Noble metals” have a very strong resistance against
corrosion and do not react to form ions unless exposed to
very aggressive chemicals
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Corrosion / degradation- brings the material "back" to the stable situation
Corrosiveness in an environment increases or varies with:• Temperature• Salinity• Oxygen content• Water velocity• Acidity• Type of electrolyte• Content of contaminants / pollution that promotes
corrosion • Micro-organisms
Oxidation of metals is a natural process
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Still the best …..
• Zinc containing primers are still the best foundation for a long lasting advanced paint system
– Cathodic protection
– Self repairing
– Reducing risk of undercutting corrosion
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
The ability of providing cathodic protection
Zinc primer
Topcoat
Superior adhesion prevents coating undercut
Moisture allows Zinc to ionize and cathodically protecting the steel
Damage in coating to steel surface
The zinc primer reacts to protect thesteel substrate when the topcoat is damaged
SteelZn
2+
Mid coat
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Technologies• Shopprimers
– Preliminary corrosion protection– Welding and burning properties– Compatible with advanced paint systems
• Zinc epoxy primers– Epoxy binder– Primer on UHPWJ and blast cleaned steel– Corrosion protection– Primer in advanced paint systems
• Zinc silicate primers– Silicate binder– Primer on blast cleaned steel– Corrosion protection– Primer in advanced paint systems
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Technologies – zinc shopprimers
• Binders– Ethyl silicate– Alkali silicate (water borne)
• Zinc content– Low – Medium
• Preliminary corrosion protection– 6 – 14 months
• Welding and burning properties– products tailored to productivity
• Compatible with advanced paint systems
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Zinc shopprimers
Muki Z 2001 Muki Z 3000 Muki Z WB-14 FW
Generic type Low zinc silicate Medium zinc silicate Medium zinc silicate
Volume solids 28 % 28 % 62 %
Protection time 6-8 months 8-10 months 12-14 months
Recommended DFT
15-20 microns 15-20 microns 15-25 microns
Colours Green, red, grey Green, red, grey Grey
Weldability Excellent Good Optimum
Cutability Excellent Good Optimum
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Technologies - zinc primers• The classification of zinc-rich primers refers to the binder
– Two different binders– Silicate – inorganic (solvent borne and water borne)– Epoxy – organic (solvent borne and water borne)
• In general the inorganic binders have better electrical conductivity than the organic binders and will give a metallic conductivity all through the coating
• Industry guidelines for minimum zinc requirements is given by organisations and specifications
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Zinc silicates and zinc epoxies(Resist 86 and Barrier)
Observations after maintenance work done under severe and difficult conditions in the Ekofisk field, North Sea Environments
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Barrier + vinyl system Resist 86 + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
9 years after last maintenance
Barrier + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
9 years after last maintenance
Resist 86 + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
9 years after last maintenance
Barrier + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
9 years after last maintenance
Resist 86 + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
9 years after last maintenance
Barrier + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
9 years after last maintenance
Resist 86 + vinyl system
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Chemistry - zinc primers
Inorganic : Network of zinc, oxygen and silicon atoms chemically bonded to each other and to the steel substrate
Organic : Metallic zinc particles "floating" in a cured epoxy binder network. The high content of zinc ensures metallic contact between the zinc and the steel substrate, and between the individual zinc particles.
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Properties - zinc epoxy
• Chemically curing• Good corrosion protection• Good adhesion• Pre-treatment: UHPWJ to WJ2 or
Sa 2½• Good mechanical strength• May be recoated with all types
of paint, except alkyd• Dry heat resistant up to 120ºC• Short over-coating time
• Temperature dependent• 2-component (water borne 3-comp)
• Film thickness: 25 - 90 m• Not acid- and alkaline resistant
(Resistant between pH 6-10)
Advantages Considerations
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Where to use - zinc epoxy primers
• Ships• Offshore• Industry
• New constructions / Maintenance• Exterior and interior, above and
below water (as holding primer for underwater use 20-30 microns)
• Blast cleaning to UHPWJ WJ2 or Sa 2½
Segments
Objects
Surface preparation
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Properties - zinc silicate primers
• Very good corrosion protection• Very good solvent resistance• Very high heath resistance
(max 400oC)• Very high mechanical strength• Very good adhesion to blast
cleaned steel• Relatively good recoatability• May be recoated with all types of
paint, except Alkyd
• Requires humidity for curing• 2-pack• Max. DFT: 100 µm
– (alkalisilicate 200 µm )
At higher DFT tendency of mud-cracking or checking
• Curing to be checked before over-coating (ASTM 4752)
• Use a tie coat or mist-coat/full-coat technique for the first subsequent coat
• Shelf life : 6 months at 23ºC (alkali silicate 18 – 24 months)
Advantages Considerations
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Where to use - zinc silicate primers
• Ships• Offshore• Industry
• New constructions / (maintenance)• Exterior above the waterline• Tank coating and water ballast tank
• Blast cleaning to minimum Sa 2½
Segments
Objects
Surface preparation
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Jotun zinc primersProducts Vol.solids Generic Type
Barrier 53 % Epoxy
Barrier ZEP 54 % Epoxy
Barrier 77 53 % Epoxy
Barrier 90 53 % Epoxy
WaterFine Barrier 56 % Epoxy - water borne
Resist 78 72 % Ethyl-silicate, inorganic
Resist 86 67 % Ethyl-silicate, inorganic
Resist GTI 67 % Ethyl-silicate, inorganic
Resist 5 WF 75 % Alkali-silicate, inorganic, water borne
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Zinc - confusions….
“Zinc dust” 100%
“Zinc” 98.5 % Other components like lead and other impurities: 1.5%
“Metallic zinc” 94%
- The raw material consists of…
“Zinc oxide” 4.5%
Total zinc is the sum of all the zinc compounds in the formulation including: Zinc dust, zinc oxide, zinc phosphate etc.
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
SSPC - Paint 20
• Zinc rich Inorganic and Organic• Zinc dust content
– Level 1• Zinc dust 85% weight in dry film
– Level 2• Zinc dust 77%, < 85% weight in dry film
– Level 3• Zinc dust 65%, < 77% weight in dry film
• Zinc dust quality according to ASTM D 520
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
ISO 12944 (and Norsok)
• Zinc dust content – Zinc dust 80% weight in dry film
• Zinc dust quality according to ISO 3549
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
ASTM D 520 - levels for lead content
Defines type of zinc dust for pigmentation of coatings
• Type I
– No max. level of lead content• Type II
– High purity grade, max. 0,01% lead content by weight
• Type III
– Highest purity grade, max. 0,002% lead content by weight
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Zinc in our epoxy primersZinc dust Zinc Metallic zinc Zinc oxide
Barrier * 80,0 78,8 75,2 3,6 Barrier 77 77,0 75,8 72,4 3,5 Barrier 90 90,0 88,7 84,6 4,1 Barrier Zep 50,0 49,3 47,0 2,3 WaterFine Barrier 80,0 78,8 75,2 3,6
* In addition to the zinc dust, 6% zinc oxide is added, giving Barrier a total zinc content of 86%
Standard specification for zinc in Jotun products is ≤ 0.01% lead content
Barrier, Barrier 77, Barrier 90 can be supplied with ASTM D520 Type II zinc dust
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Zinc in our silicate primers
Zinc dust Zinc Metallic zinc Zinc oxideResist 78 78,0 76,8 73,3 3,5 Resist 86 86,0 84,7 80,8 3,9 Resist 5 WF 90,0 88,7 84,6 4,1 Resist GTI 86,0 84,7 80,8 3,9
Standard specification for zinc in Jotun products is ≤ 0.01% lead content
All Resist products can be supplied with ASTM D520 Type II zinc dust
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Barrier in projects
Kola Bridge, Russia
Ivana B platform, one of several installations with Barrier on the Ivana field in The Adriatic Sea
Tianjin port, China 12 units of RMG
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Resist in projects
Essar Oil Refinery at Vadinar in Gujarat, India
3x660 MW power complex BARH STPP in India
Guangzhou New International airport, China
TKr/Zinc Primers Jotun/Oct. 2007/Jotun/Coatings/Marketing
Jotun Coatings Zinc Primers
Jotun Zinc Primers
Protects Properties