Palle Gustafsson Vamdrup New systems for wind mill towers

Transcription

1 Palle Gustafsson Vamdrup New systems for wind mill towers

2 Coating demands for Wind mill towers Excellent corrosion protection Excellent outdoor durability - Good gloss and color retention. Working conditions from 40 -> +45 C Excellent resistent to salt, water and ice. Chemical resistant (lubricants, hydraulic fluids and cleaners). Environmental friendly Expected lifetime >25 years.

3 The production process High output. Fast drying - preferebly at ambient temperature. Reliable Repainting is costly. Environmental friendly VOC compatible.

4 Traditional system for towers TEKNOS SPECIFIKATION STANDARD SYSTEM C5M-high Product name DFT (µm) Volume solids (%) Theo. Spreading (m2 / L) VOC (g / L) VOC (g / m2) Drying time (h) Paint volume (L/100m2) EPOXY ZINC , h 11,36 EPOXY PRIMER (high solid) 2* , *4 h 30,30 POLYURETHAN , h 10,75 Total ,42 High amount of VOC High drying time

5 Polyaspartic system for towers TEKNOS SPECIFIKATION FAST DRYING HIGH SOLID SYSTEM C5M-high Product name DFT (µm) Volume solids (%) Theo. Spreading (m2 / L) VOC (g / L) VOC (g / m2) Drying time (h) Paint volume (L/100m2) EPOXY ZINC , h 11,36 POLYASPARTIC , h 31,25 Total ,61

6 Pure polyaspartic system for towers TEKNOS SPECIFIKATION FAST DRYING HIGH SOLID SYSTEM C5M-high Product name DFT (µm) Volume solids (%) Theo. Spreading (m2 / L) VOC (g / L) VOC (g / m2) Drying time (h) Paint volume (L/100m2) TSM , ,02 POLYASPARTIC , h 31,25 Total ,27

7 Overview 250 Traditionel vs polyaspartics VOC (g / m2) Drying time (h) Paint volume (L/100m2) Traditionelt Zn(EP) polyaspartic polyaspartic

8 What s a Polyaspartic Polyaspartics are very low viscous The have a very high reaction speed with isocyanates No reaction gasses are being build The reaction of polyaspartics with isocyanates leeds to a polyurea coating

9 Idea to market

10 New but with 10 years experience Teknos was one of the first to introduce polyaspartic technology to the European market. Development started in 2003 and the first implemented products were used in TEKNODUR COMBI 3560 has been one of the most succesfull products in the TEKNOS group

11 Experiences Used in a range of system Solvent- and waterborne 1- and 2 component systems Used in several applikations General industry products Windmill towers Windmill wings Parts for towers ISO Norsok M-501 approved

12 TEKNODUR COMBI 3560 Technology Teknos Polyaspartics for metal are named: TEKNODUR COMBI 3560 This new polyurea chemistry which provide: High solids ( ) % by volume Adjustable curing speed From standard cure speed to extremely fast. Low viscosity Spraying with standard eqiupment Adjustable pot life From 7 min to 2 hours. High filmthickness in one coat possible Hard and though paint film Excellent corrosion protection and weatherability.

13 Additional documentation C3 system 3560 (200µm) C5M System TSM (60µm) (240µm) Pinholes NACE SP0188 Low voltage 90V OK OK Pull-off ISO 4624 >15 Mpa >15 Mpa Continious condensation ISO 6270 part of ISO hours 720 hours Saltspray DS/EN ISO 9227 part of ISO hours Na (OK 1440) "NORSOK": DS/EN passes 25 weeks Thermal cycling NACE TM Section 9 3 weeks 3 weeks Flexibility test NACE TM Section 12= NACE RP degrees R200 at 23 degrees C at -18 degrees C 2 degrees R200 at 23 degrees C at -18 degrees C NACE TM Section 13=ASTM G14/ASTM D2794 Impact resistance test equal to DS/EN ISO >15 inp >15 inp Cold check Teknos internal specification 10 cycles 10 cycles Immersion test ISO Na 4200 h * Not part of ISO12944 however no blistering rust ect.

14 Example of test equipments

15 Proces window What will happend at deviation in mixing ratio system C3M

16 100 Drying time (drying recorder) Minutes Dust dry Dry to touch Dry to handle TEKNODUR TEKNODUR TEKNODUR TEKNODUR TEKNODUR TEKNODUR TEKNODUR Udhærdningsgrad: Udhærdningsgrad: Udhærdningsgrad: Udhærdningsgrad: Udhærdningsgrad: Udhærdningsgrad: Udhærdningsgrad: 70% 80% 90% 100% 110% 120% 130%

17 Chemical resistanse spottest Evaluation from Spottest 24 h NaOH Spottest 1h formic acid Spottest 24 hours Xylene 1 0 TEKNODUR Udhærdningsgrad: 70% TEKNODUR Udhærdningsgrad: 80% TEKNODUR Udhærdningsgrad: 90% TEKNODUR Udhærdningsgrad: 100% TEKNODUR Udhærdningsgrad: 110% TEKNODUR Udhærdningsgrad: 120% TEKNODUR Udhærdningsgrad: 130%

18 140,0 König hardness Seconds 120,0 100,0 80,0 60,0 40,0 20,0 0,0 TEKNODUR 3560-TEKNODUR Udhærdningsgrad: Udhærdningsgrad: 70% 80% TEKNODUR Udhærdningsgrad: 90% TEKNODUR Udhærdningsgrad: 100% Mixing ratio TEKNODUR 3560-TEKNODUR Udhærdningsgrad: Udhærdningsgrad: 110% 120% TEKNODUR Udhærdningsgrad: 130% Hardness König 1 day Hardness König 2 day Hardness König 4 day Hardness König 1 week Hardness König 10 days Hardness König 2 weeks Hardness König 3 weeks Hardness König 4 weeks Hardness König 8 weeks

19 Conclusion for process window 3560 has the safety in production needed to assure a safe and full performing systems even at higher deviations in mixing ratio than would be accepted. Always use 2-component equipment when using polyaspartics Keep track on mixing ratio and pot-life. Fix the mixing ratio to stay between +/-5% of set-point

20 Documentation of repair system Repair system are based on Zn (EP) or 1-component (1 hour potlife) Tested on: Steel TSM Damage to both Primed surface Tested at standard conditions as well as extreme conditions

21 Conclusion on repair system Repair system are showing the same performance as the original system Painting can be done by roller, brush or spray Painting on cold substrates and early exposure is possible

22 Conclusion VOC Output Energy consumption Isocyanate Epoxy EP/PU Powder Polyaspartic

23 What s the cons Short pot-life 2-K equipment is needed. Clean and rough surface is needed. Teknos recommends gritblasting to a roughness medium to rough. Compared to powder coating this system contains isocyanate like other PU s If you want full control on drying time the condition needs to be controlled (Teknos recommends RH 40-60% and temp degrees C).

24 Flexible range Describtion Full automatic lines Manual painting with 2-K equipment Manual painting Pot-life (25 degrees C) Mixing ratio volume 8 min 15 min. 1 hour 4,5:1 4,5:1 4:1 Volume solid 77% 77% 83% VOC content 240 g/l 240 g/l 170 g/l Dry to handle at 23 degrees C (240 µm DFT) 70 minutes 90 minutes 4 hours

25 Summary TEKNODUR COMBI 3560 is recommened for towers inside as well as outside C3 to C5 marine For C5 Marine conditions Zn-rich primer or TSM are approved and to be recommended For other parts several primers are tested for C5 TEKNODUR COMBI 3560 will help you Reduce amount of VOC needed for the painting process Reduce energy consumtiom needed for the drying process Reduce time of production

26 Palle Gustafsson Vamdrup New systems for wind mill blades

27 TEKNODUR COMBI 3572 Polyaspartics for windmill blades Developed for windmill blades with strong adhesion (>8 MPa pull-off) direct to reinforced polyester and epoxy as well as PU and EP fillers With improved rain erosion resistance With excellent fatique resistance

28 Rain erosion resistance of 3572 Tested in chopper test with windmill tip at Speed 135 m/s Rainfall 60mm/h Passes test at 120 min!

29 TEKNODUR COMBI 3572 for Windmills Blades: TEKNODUR COMBI x 160 µm Total dry film thickness 160 µm

30 System for windmill blades TEKNODUR has been tested and approved in accordance with customer specification. The full system is based on: Filler Intermediate filler polyaspartic possible -> 3574 sanding after 1h Topcoat: TEKNODUR 3572 dry to touch after 1 hour.

31 Palle Gustafsson Vamdrup Thank you!