Transcription
Viton and Vamac families:Chemical structure and monomer composition
Monomers used in Viton CarbonFluorineHydrogenOxygenHFPVF2H2C CF2 (59% fluorine)vinylidene fluorideTFEF2C CF-CF3 (76% fluorine)hexafluoropropylenePMVEF2C CF-O-CF3 (69% fluorine)perfluoromethylvinyletherApril 13, 2010DuPont ConfidentialEH2C CH2ethyleneF2C CF2 (76% fluorine)tetrafluoroethylenePH2C CH-CH3propylene2
Viton Fluoroelastomer FamiliesMonomer CompositionVF2HFPTFEPMVEPECSM**Cure Site Monomer (composition depends on P-STBR-S66-70%F65.5-70%F64.5-67%F66%F60%FViton made with APALow TemperatureStandard Viton April 13, 2010DuPont ConfidentialViton ExtremeTMSpecialty Viton 3
Families of Viton «GAL-S» families66% Fluorine«GLT-S» family64% Fluorine«B» and«GBLT-S » family«GBL-S» families66% Fluorine68% Fluorine«F» and«GF-S» families«GFLT-S» family70% Fluorine67% FluorineMost Fluid ResistantViton ExtremeTMNote: polymers with namesending with an “S” are based onAdvanced Polymer Architecture(APA) technologyApril 13, 2010DuPont ConfidentialVTR-8802/8804, 60% fluorineETP-S, 67% fluorine Decreasing Hydrogen«A» andSpecialty Viton Low TemperatureIncreasing FluorineStandard Viton ImprovingChemicalResistance4
Relative Performance of Viton Fluoroelastomer Families
Viton Relative PerformanceViton productCuring systemFluorine ll Viton products have outstanding thermal propertiesHeat resistanceChemicalresistance* * BESTBase resistance BESTBESTLowtemperatureproperties BEST lowlowlowlowlowlowmediummediummediumlowhigh Good FairCompressionset resistanceRelative cost ofpolymerBESTlowBESTExcellent Very good Poor“S” indicates products made with Advanced Polymer Architecture* Consult the Chemical Resistance Guide at www.dupontelastomers.com or contact your Viton specialist.April 13, 2010DuPont Confidential
Viton Fluoroelastomers Typical sistance(e.g.(e.g.downdownhole)hole)Low temperature flexibilityTR-10 ( sistancechemical resistance(e.g.(e.g.steamsteamandandacid)acid)Best compression set and T-S-30GLT-S-35051015202530Volume swell upon immersion in M15 / 7 d / room-temperature refunctionalitytemperature t fluid resistancered for Viton made with APA (« -S » for APA technology);« G » for peroxide curing vs. bisphenol curing, « LT » for low temperatureApril 13, 2010DuPont Confidential735BestBestlowtemperaturelow linjectorinjectoro-rings)o-rings)
Vamac Ethylene Acrylic Elastomer (AEM)General IntroductionFebruary 2010
9Vamac on the Elastomer’s MapClassification by ASTM D-2000V Solutions SpaceHeatRes.Sealing & Hose Applications250Viton 70 hrs225SiliconeApplications withmin. temperaturerequirements of165 degrees200FluorosiliconeHiTemp-ACMVamac 175Polyacrylate (ACM)165150EPDMHNBRCSMCPE125Applicationswith e ButadieneNatural RubberNo ReqApril 13, 2010EpichlorohydrinDuPont Confidential1701201008060402010Oil Resistance% Swell in IRM 903 Oil
10Chemical StructureNew productsAEM G -Type Terpolymer(A) Monomers Choice andRatio(CH2-CH2)x – (CH-CH2)y – (R)z O C OCH3 C O(B) Molecular WeightDistribution Optimization. OH(C) Adjustments at Finishingstep.Ethylene, Methyl Acrylate, Acidic Cure SiteStarting from Vamac G, new products can be obtained by (A), (B) or(C) to meet customers required performances.April 13, 2010DuPont Confidential
VAMAC GRADES11Vamac - Grade SelectionAEM G -TYPE TerpolymerAEM D -TYPE Dipolymer(CH2-CH2)x – (CH -CH2)y – (R)z C OC OC O OCH3OHOCH3Diamine CureApril 13, 2010DuPont Confidential(CH2-CH2)x – (CH -CH2)yPeroxide Cure
12Vamac Product Line and DevelopmentsLower oil swellVamac GHigher viscosityBest Low T propertiesVamac HVGBetter properties,faster cureVamac DPVamac Ultra LTVamac GXFVMX-3038Vamac Ultra IP(developmental)(VMX-3040)VMX-3121(low swell version,experimental)Peroxide CureLimited Post-CureDuPont ConfidentialApril 13, 2010Vamac GLSBest Dynamic Flex Fatigue(Turbo st Processing and Compression SetProperties
13Vamac - Standard and High Viscosity GradesHigh Viscosity GradesVamac G16.5 MU, -30 CVamac GXF17.5 MU, -31 CVamac GLS18.5 MU, -24 CHigh ViscosityGradeML (1 4) 100 C, TgVamac Ultra IP29 MU, -31 CVamac VMX-303830 MU, -32 CVamac VMX-311030 MU, -25 CMajor Features;Best CompressionSet, Fast CureBest DynamicFatigue Resistance;Best CompressionSet, Fast Cure, LowOil swellLow HardnessMolded parts, Seals& Gaskets, Highpressure hosesHigh TemperatureTurbo ChargerHosesMolded parts withbest fluid andlubricant resistanceStandard GradeML (1 4) 100 C, TgMain Application(s)April 13, 2010DuPont ConfidentialVamac VMX-312131-33 MU, -26 CHigh MA version ofVMX-3038
14Vamac Grade DescriptionPolymerperoxideDiamine cureGradeFeaturesTargetML 1’ 4’(100 C)PerformancesGStandard Grade16.5GLSIncreased MA %for higher polarity18.5Improved FluidresistanceHVGCovalent precrosslink26.0Green strengthGXFModified cross-link density18.5FatigueresistanceUltra IPTailored MW distribution29.0Better processUltra LTNew copolymer11.0Low T resistanceVMX-3038Talilored MW and Monomer content30.0Best HTpropertiesMRSpecific Finishing Process16.5PolymerModificationDPDiPolymer, No acidic cure site22.0 /-3No post-cureVamac grades tailored on a target performance to meet customers needs.DuPont ConfidentialApril 13, 2010
On-line Tools
Wall Chart for Viton , a Selection GuideCoatings /MasticsCalenderingExtrusionOthersmetal ent,%VolumeCompressionIncrease,set, %TemperatureCM-1570 hr @RetractionFuel @200 C(TR-10), C23 CTransfer VitonProductNameNominalViscosity(ML 1 10 @121 C)compressionMolding16A and AL types: Standard FKM - excellent compression set and heat resistanceCurative Containing Precompounds ("C" at end of product 5Gum XXXXXXXXXXXXXXXXXProduct nameComp set & TR-10Processing infoMooney viscosityVol. swell, M-15Specific gravity & % fluorineApril 13, 2010Viton wall chart is available at www.dupontelastomers.comDuPont Confidential
Selection Based on Application NeedsBaseBase resistance:resistance:BestBest resistanceresistance toto aggressiveaggressive amineamine basedbased anti-corrosionanti-corrosion additivesadditives ?noyesHydrocarbonHydrocarbon resistanceresistance(automotive(automotive fuels,fuels, etc.)?etc.)?yesETP-SGFLT-SApril 13, 2010DuPont ConfidentialHighHigh resistanceresistance toto oxygenated-fuelsoxygenated-fuels(MeOH,(MeOH, MTBE),MTBE), steam,steam, acids?acids?noTBR-SyesnoLowLow temperaturetemperatureflexibilityflexibility betterbetterthanthan -20 -20 C?C?yesnoGFLT-SFGBLT-SGF-SLowLow temperaturetemperatureflexibilityflexibility betterbetterthanthan -20 -20 C?C?yesGLT-SnoAALBGBL-Sblack for standard Viton ; red for Viton made with APA (« -S » for APA technology)17
On-line Viton Selection GuideApril 13, 2010DuPont Confidential18
On-line Chemical Resistance GuideThe CRG is a resource to help you choose the best elastomer for your application.Access to our on-line Chemical Resistance Guide (CRG) is available through theDuPont Performance Elastomers web site at www.dupontelastomers.com,wheredetailed information about our product line may also be found.April 13, 2010DuPont Confidential19
Example 1: Water and SteamWaterApril 13, 2010DuPont ConfidentialSteam under 150 CSteam over 150 C20
Example 2: Fuel C/Methanol (90%/10%)April 13, 2010DuPont Confidential21
On-line Application Guidefor Viton Made With APAApril 13, 2010DuPont Confidential22
On-line Application Guide forViton Made With APAApril 13, 2010DuPont Confidential23
24Thank you for your attentionThe information set forth herein is furnished free of charge and is based on technical data that DuPont believes to bereliable and falls within the normal range of properties. It is intended for use by persons having technical skill, at their owndiscretion and risk. This data should not be used to establish specification limits nor used alone as the basis of design.Handling precaution information is given with the understanding that those using it will satisfy themselves that theirparticular conditions of use present no health or safety hazards. Since conditions of product use and disposal are outsideour control, we make no warranties, express or implied, and assume no liability in connection with any use of thisinformation. As with any product, evaluation under end-use conditions prior to specification is essential. Nothing herein isto be taken as a license to operate or a recommendation to infringe on patents.Caution: Do not use in medical applications involving permanent implantation in the human body. For other medicalapplications, discuss with your DuPont customer service representative and read Medical Caution Statement H-50103-3.Copyright 2010 DuPont . The DuPont Oval logo, DuPont , The miracles of science , Viton , Vamac , are registeredtrademarks of E.I. du Pont de Nemours or its affiliates. All rights reserved.April 13, 2010DuPont Confidential
Viton product B F GBL-S GF-S ETP-S BEST Chemical resistance* * Curing system bisphenol bisphenol peroxide peroxide low low low high Relative cost of polymer Compression set resistance Low temperature properties Base resistance BEST Fluorine content 68.5% 70% 67.5% 66%
