油漆培训教程PPT学习教案

1、会计学1油漆培训教程油漆培训教程第1页/共112页第2页/共112页第3页/共112页第4页/共112页第5页/共112页nnTar第6页/共112页 The binder absorbs oxygen from the air, causing the binder molecules to link together to form larger macro molecules. The original binder molecules are “free to move” while the macro molecules in the dry film are fixed. Air

2、drying alkyds and boiled linseed oil dries in this way. Alkyds, however, have comparatively larger molecules from the beginning and therefore dry faster than linseed-oil.第7页/共112页Wet filmSubstrateDry filmSubstrateOxygen O2Solvent第8页/共112页Oxygen enter.Reaction starts:Polymer molecules linked together

3、 through chemical bondsSolvents evaporating第9页/共112页Solvents evaporatingPolymer molecules stick together (no chemical bonds):Polymer molecules are packing:第10页/共112页= Polymer= Curing agent (hardener)Solvents evaporatingPolymer & hardener molecules reacted to form a new chemical substance:第11页/共1

4、12页第12页/共112页第13页/共112页AdvantagesLimitations第14页/共112页Jotuns alkyd products:Alkyd PrimerPilot IPilot IIPilot QD PrimerMammut PrimerMammut TopcoatAluflex第15页/共112页SegmentsObjectsSurface preparation第16页/共112页第17页/共112页CD no. 4226 photo 69To obtain a good result: Use a sealer coat between the CR and th

5、e Alkyd Ensure a clean, dry surface第18页/共112页Gjerde flaker1-8第19页/共112页DFT)第20页/共112页第21页/共112页Jotuns acrylics, chlorinated rubbers and modified-vinyls:Pioner PrimerPioner TopcoatVinyguard SilvergreyNote: antifoulings are also based on acrylic resins (and rosin)第22页/共112页 LimitationsPoor solvent res

6、istanceLow solid contentRelatively poor wetting propertiesThermoplasticDry heat resistant up to approx. 70 C第23页/共112页SegmentsObjectsSurface preparation第24页/共112页CnAlkyd on top of CR may have poor adhesion第25页/共112页第26页/共112页AdvantagesLimitations Low solid content Poor resistance against strong solv

7、ents Dry heat resistant up to approximately 80 CUsed for: Physically drying Good chemical resistance Good water resistance Quick drying Not temperature dependent One-componentExterior objects above water Offshore on top of Zinc-ethylsilicate第27页/共112页Used for: Under water areas第28页/共112页第29页/共112页Pa

8、rt A:Epoxy resinSolventsPigmentsExtendersAdditives+Part B:Curing agentSolventChemical reaction Evaporation of solvent ResultInsoluble 3-dimensional network第30页/共112页 Polyamides: Normal epoxy paints Amine and amine adduct:Solvent free coatingsTank coating Isocyanates:Low temperature curingReaction wi

9、th -OH第31页/共112页Temperature dependent curingAvoid high humidityMinimum and maximum curing timesTime for fully curedUse epoxy thinnerHealth and epoxy第32页/共112页Jotuns epoxy coatings:Jotacote Universal(pure epoxy)Penguard products (pure epoxy)Tankguard HB (pure epoxy)Naviguard(pure epoxy, solvent free)

10、Tankguard 412(pure epoxy, solvent free)Balloxy products (modified mastic epoxy)Jotamastic products (modified mastic epoxy)Primastic products (modified mastic epoxy)Safeguard Universal ES(modified epoxy)Safeguard TF KS(modified epoxy)Tankguard Special (phenolic epoxy)Tankguard Storage(phenolic epoxy)

11、Jotaguard FD(tar epoxy)Jotaguard 85(tar epoxy)etc第33页/共112页第34页/共112页Jotuns pure epoxy coatings:Penguard PrimerPenguard HBPenguard TopcoatPenguard FC(new product)Jotacote UniversalNaviguard (solvent free)Tankguard 412(solvenet free)第35页/共112页Advantages Chemical curing Very good chemical resistance H

12、igh alkali resistance Moderate resistance to acids Good adhesion Very low permeability High mechanical strength Dry heat resistant up to 120 CLimitations Chalking Temperature dependent 2 - component Requires blast cleaning Overcoating time第36页/共112页 Ships Offshore Industry Newbuildings / Maintenance

13、 Chemical cargo tanks Blast-cleaned to Sa 2 or shop primed steelSegmentsObjectsSurface preparation第37页/共112页第38页/共112页第39页/共112页第40页/共112页乙烯基氯化橡胶分子环氧聚氨酯氨基改性醇酸醇酸熟亚麻油亚麻油高表面容忍度漆:环氧Mastic第41页/共112页Jotuns mastic and modified epoxy coatings:Balloxy products (modified mastic epoxy)Jotamastic products (modi

14、fied mastic epoxy)Primastic products (modified mastic epoxy)Safeguard Universal (modified epoxy)第42页/共112页 Advantages Chemically curing Surface tolerant Light colours Very good water resistance Very good wetting properties Good chemical resistance High solid content High build (Thick coats) Winter c

15、uring agent Dry heat resistant up to 90 C Limitations Chalking Temperature dependent Not to be applied on thick coats of physically drying paints Minimum DFT 150 m by airless spray第43页/共112页0102030405060708090Vol. % solids Vinyl CR Alkyd Poly- Epoxy Jotamastic urethane 87第44页/共112页SegmentsObjectsSur

16、face preparation第45页/共112页Jotuns other epoxy coatings:Tankguard Special (phenolic epoxy)Jotaguard FD(tar epoxy)Coal Tar Epoxy 82(tar epoxy)第46页/共112页 Advantages: Chemically curing More flexible than other epoxies Excellent water resistance Economical Good wetting properties = good surface toleranceL

17、imitations: Dark colour 2-component Slow drying in winter Slightly thermoplastic in summer Prone to solvent entrapment Observe max. ocoating interval Bleeding when overcoated Reduced abrasion resistance (compared to other epoxies) Application restricted/countries (health hazard)第47页/共112页第48页/共112页A

18、dvantages Excellent chemical resistance Dry temperature resistant up to 180 C Good mechanical strength / abrasion resistanceLimitations Reduced water resistance (compared to other epoxies) Temperature dependent 2-component Moderate wetting / surface tolerance Requires high level of cleanliness Max.

19、overcoating time to be observed第49页/共112页第50页/共112页Jotuns polyurethane topcoats:Futura AS Hardtop ASHardtop FlexiHardtop XP第51页/共112页AdvantagesLimitations第52页/共112页SegmentsObjectsSurface preparation第53页/共112页0102030405060708090100400800120016002200JotatopPolyurethaneEpoxyAlkydGlossHours accelerated

20、testing第54页/共112页Hardtop Flexi第55页/共112页Two-coat newbuilding system fewer coats saves moneyBetter and easier on board maintenanceReduced sea stock complexityLess corrosion on high impact areas like decksDTM for low corrosion areas (C3)Great as imperfection hider第56页/共112页Hardtop Flexi has excellent

21、adhesion to all well-know primers.You will find cohesive break (good) in the topcoat and not adhesion break (bad).All JOTUN two-component primers are approved.Typical adhesion performance of two-coat systems (ISO 4624)Substrate: Blast cleaned steel panel (Sa 2)3 x 200 x 400 mmSystem Primer/TopcoatDr

22、y film thicknessAdhesion value MPa#1Jotacote UniversalHardtop Flexi200 microns 80 microns11.6 (break in topcoat)#2Jotamastic 87Hardtop Flexi200 microns 80 microns11.6 (break in topcoat)#3Primastic UniversalHardtop Flexi200 microns 80 microns9.7 (break in topcoat)#4Primastic Hardtop Flexi200 microns

23、80 microns10.8 (break in topcoat)Hardtop Flexi第57页/共112页Hardtop ASHardtop ASHardtop PSOHardtop PSOWaterFine TopcoatWaterFine TopcoatJotaproof TopcoatJotaproof TopcoatJotacoate OXRJotacoate OXRMammut TopcoatMammut TopcoatHardtop FlexiHardtop FlexiPilot llPilot llPioner TopcoatPioner TopcoatPenguard T

24、opcoatPenguard TopcoatHardtop Flexi has good results in the very tough ASTM G154-00 / QUV A test. Initial gloss level is approx. 60. Hardtop Flexis drop to approx. 40 after 2000h is less visible due to lower initial gloss. 第58页/共112页Hardtop FlexiHardtop FlexiHardtop PSOHardtop PSOCompetitorCompetito

25、rPSO productPSO productAmong tested products Hardtop Flexi is probably the most flexible. Values indicate flexibility after 6 months (100 = best).Hardtop ASHardtop ASTypical Cupping test valuesTypical Cupping test values第59页/共112页Container corner dropped onthe deck. Hardtop Flexi still intact withou

26、tcracks or flaking.Hardtop Flexi第60页/共112页第61页/共112页第62页/共112页第63页/共112页第64页/共112页FEATUREHigh solidsHigh DFTLess dry sprayGood RQ propertiesGood sag resistanceLong opening timeApplication propertiesBENEFITLower m cost better economy1 coat saved, No saggingLower m cost, less overspray, cleanerBetter

27、resultBetter resultMinimal gloss differenceBest possible result第65页/共112页Hardtop PSO第66页/共112页No risk of cracking due to brittle filmExcellent appearanceCost effective premium topcoatLonger maintenance intervals (15+ years)Fast drying time (3.5h / 23C)第67页/共112页第68页/共112页第69页/共112页Main technology ch

28、allenge for polysiloxane technology is to maintain flexibility in the paint film.Lack of flexibility may lead to cracking and flaking.Unacceptable cracking in competitor product第70页/共112页第71页/共112页Jotuns zinc-rich primers:Barrier ZEP(epoxy, 50% zinc) Barrier 77(epoxy, 77% zinc)Barrier(epoxy, 78% zinc)Resist 78(IOZS, 80% zinc)Resist 86(IOZS, 86% zinc)Resist GTI(IOZS tank coating)第72页/共112页AdvantagesLimitations第73页/共112页Segments