Presentation on theme: "Outline: FEVE Powder Resins Overview of “FEVE” resin technology"— Presentation transcript:
0 “Aesthetics and Performance: FEVE Fluoropolymer Resins for Powder Coatings” Bob ParkerD+D WebinarApril 25, 2013
1 Outline: FEVE Powder Resins Overview of “FEVE” resin technology Determination of best properties for an FEVE powder coating resinIntroduction of FEVE resin for powder coatingsTesting results of formulations made withFEVE powder resin2nd Generation FEVE Powder Coating Resin
2 What is an FEVE Fluoropolymer??? FEVE Powder ResinsWhat is an FEVE Fluoropolymer???A hybrid fluoropolymer resin with the ability to be used in standard coatings formulations like any other conventional coating resinA high performance resin that can withstand severe ultraviolet light exposure 2-3 times longer than conventional coatings resins
3 FEVE Fluoropolymer Resins FEVE Powder ResinsFEVE Fluoropolymer Resins“FEVE” is abbreviation for “Fluoroethylene Vinyl Ether” resins for coatingsKnown for their high performance properties:Exceptional resistance to UV degradationSuperior Chemical ResistanceExcellent Thermal Resistance- Known for their unique formulation properties:1) Solvent soluble2) Can be cured at ambient temperature with isocyanates3) Can achieve high gloss formulations
5 Target Properties/Characteristics for an FEVE Powder Coating Resin FEVE Powder ResinsTarget Properties/Characteristics for an FEVE Powder Coating ResinPropertiesCharacteristicsMelting PointCan Simplify Extrusion of the Powder Coating Formulation During ManufactureTg (Glass Transition Temperature)Important in the Retention of Powder Properties when in StorageType of Crosslinkable Functional GroupCan affect the Shelf Life of the Powder CoatingDegree of FunctionalityAffects Film Performance
6 Test for Choosing the Best Tg for the FEVE Powder ResinsTest for Choosing the Best Tg for theFEVE Powder Resin:1) Prepare powder coatings using several FEVE resins with different Tg properties2) Place coatings in cylinders and apply 40 gm/cm² force.3) Place cylinders in 40⁰ C. oven for 24 hours.4) Check physical state of powder coatings.
7 Physical State of the Powder Coating FEVE Powder ResinsRelationship of Tg of Resin and Blocking Properties of the Powder CoatingTg of Powder Resin (⁰C.)Physical State of the Powder Coating40Fused Hard Lump45Fused Hard Lump50Fused Soft Lump55Retained Powder State
8 Hardener for Crosslinking FEVE Powder ResinsConnection between Cure System of FEVE Powder Resin and Shelf Life of CoatingsFunctional GroupHardener for CrosslinkingShelf LifeHydroxyl (-OH)Isocyanate, Melamine2 yearsCarboxyl (-COOH)Epoxy, triglycidyl isocyanurate1-1.5 yearsGlycidyl (epoxide ring)Amine, acid3 monthsHydroxyl functionality is the best choice!
9 Common properties of 1st Generation FEVE Powder Resin FEVE Powder ResinsCommon properties of 1st Generation FEVE Powder Resin
11 Typical Laboratory Manufacturing Procedure: FEVE Powder ResinsTypical Laboratory Manufacturing Procedure:Add all ingredients together; premix with blade mixerExtrusion of powder coating premix:a. twin screw extruder w/ 16 mm Bore sizeb ⁰C.Grinding with Blade MixerFiltering of powder through 3 sieves → 180 micron125 micron90 micron
12 FEVE Powder Resins Effect of Different Catalysts on Gloss *1 – used 500 gram weight and ½” diameter ball*2 – ISO 2409 cross cut adhesion test*3 - visual check for degree of orange peel;1=highest and 10=lowestCrelan Ui: IPDI NCO adduct; E-Caprolactam blockedCrelan TPLS2147: IPDI NCO adduct; internally blockedBismuth Octoate is best catalyst!
13 Advantages of FEVE Powder over Conventional Powder resins FEVE Powder ResinsAdvantages of FEVE Powder overConventional Powder resinsProduces a hard film- higher than 2H pencil hardnessHas stronger Chemical Resistance to acids, bases, and solventsDemonstrates significant anti-graffiti propertiesExceptional Weatherability propertiesHighly Transparent film- translates to a high transmittance of a wide spectrum of light raysImpact on application productivity- FEVE resin has least impact on comtamination
14 FEVE Powder Resins Anti-graffiti Performance Test: Application of marker for 24 hours; attempted removal with Xylene
21 2nd generation FEVE powder resin: FEVE Powder Resins2nd generation FEVE powder resin:Introduced 3 years agoImproved flow and leveling vs. 1st generation FEVE resinImproved impact resistance and flexibility vs. 1st generation FEVE resinComparable to 1st generation FEVE resin in termsof hydroxyl functionality and Tg
22 FEVE Powder Resins PROPERTIES 1st generation FEVE resin 2nd generation Film Thickness (microns)50-7020⁰ Gloss505160⁰ Gloss8078Leveling (PCI Standard)6-7.5Gloss retention after 6000 hours (QUV-B313 exposure)87%84%Mandrel Bend (mm)>83Direct Impact (inch-lbs)1530Reverse Impact (inch-lbs)1025Cross-cut Adhesion (ISO 2409)
23 FEVE Powder ResinsSummary:FEVE powder coating resins demonstrate exceptional resistance to UV degradation when used in powder coating formulations. while exhibiting the standard physical properties necessary for manufacturing a stable and easily applied powder coating formulation.