Presentation on theme: "DuPont Performance Lubricants"— Presentation transcript:
1 DuPont Performance Lubricants DuPont™ Krytox® for Vacuum SystemsSetting the Standard for Safety, Reliability, and Cost Effectiveness
2 DuPont™ Krytox® Perfluorinated Oils and Greases Overview of DuPont™ Krytox® offeringKrytox® Fluid and Grease ApplicationsPerformance Characteristics at a GlancePhysical PropertiesTypical Customers and Industry ApplicationsRationale for Converting from HydrocarbonKrytox® Regeneration ServiceAdditional Krytox® Products
3 Overview of DuPont™ Krytox® offering ISO-9002 facilityStable supply based on 50 years of experienceComplete product portfolio including soluble additives, Ultra-high temperature, and linear oils and greasesCompetitive pricing on all product offeringsCost savings from reliable supply and performance – less downtimeTechnical support and sales expertiseSuperior fluid regeneration quality and service
5 Common vacuum pumps that have used DuPont™ Krytox® lubricants Vane type pumpRoots type pumpClaw type dry pumpDry screw pumpTurbomolecular pumpDiffusion pumpEQUIPMENT DESCRIPTIONSBooster Pumps (often referred to as Roots pumps): These have high-speed interlocking rotors which are synchronized by a gearbox mounted at one end - this is where the Krytox® Oil goes. The other end of the rotor is usually supported by grease-filled bearings. They are usually dry pumps. They are used for primary reduction to partial vacuum before the main reduction is done by secondary pumps. Booster pumps are not always used - but allow for rapid pressure drop (thus speeding up the time taken to create full vacuum).Secondary Pumps can either be wet or dry.Wet pumps are typically Rotary Sliding Vane type, or Piston type - both of these types are in decline. The oil is used to lubricate and help seal the vanes or pistons. Bearings can be either oil or grease lubricated (usually grease).Dry pumps tend to be either interlocking 'claw' or modified 'lobe' types. The interlocking rotors are synchronized by a gearbox mounted at one end. Rotors are supported by bearings at each end. The non-gearbox end usually has grease lubricated bearings. The bearings on the gearbox end usually run in the gearbox oil, i.e., Krytox®. Dry Pumps are usually found in SemiCon applications -- wafer fabrications.
6 Performance Characteristics at a Glance DuPont™ Krytox® Vacuum Pump FluidsNontoxicBiologically inertCompatible with plastics and elastomersUnaffected by common organic solvents and waterHigh densityLow surface tensionResistant to Lewis acidsH-1 food grade fluids availableDuPont™ Krytox® LVPHigh-Vacuum GreaseVery low vapor pressureHigh degree of chemical inertnessCompatible with metals, plastics, and elastomersAnd, of course, all DuPont™ Krytox® oils and greases are completely nonflammable, have excellent thermal and oxidation resistance, and provide outstanding lubricity
7 Physical Properties of DuPont™ Krytox® in Vacuum Pump Fluids Close manufacturing tolerances maintain the vapor pressure - viscosity relationshipWide range of viscosities and vapor pressuresViscosity range and pour points are:similar to those of hydrocarbon oilssuperior to those of chlorofluorocarbon oilsMinimum backstreaming maximizes system vacuumClosely controlled to maintain specific vapor pressure/viscosity relationshipsAvailable in a wide range of viscosities and vapor pressures for systems requiring clean, premium-quality inert fluids for mechanical or diffusion vacuum pumpsViscosity range and pour points of Krytox® vacuum pump fluids are similar to those of hydrocarbon oils and are superior to those of chlorofluorocarbon oilsVapor pressures are functions of the average molecular weight of these polymeric oils and are carefully controlled by distillation processes to give consistent valuesThese tightly controlled specs ensure low backstreaming rates and maximize the ultimate attainable vacuum in a system
8 Chemical Comparison CFз CF3CF2CF2O –[CF-CF2O]x–CF2CF3 CFз CF3 group:acts as a shieldgives Krytox® superior stability against attack by Lewis acidsDuPont™ Krytox®:CF3CF2CF2O –[CF-CF2O]x–CF2CF3CFзx = 10-44No CF3 group:makes competitive product susceptible to attack by Lewis acidsCompetitive product:CFзCF3CF2CF2O–[CF-CF2O]m –[CF2-O]n –YY = C2F5; CF3m/n ~ 40Even gases and chemicals used in semiconductor manufacturing do not react with Krytox® oils in a vacuum pump environment
9 Superior Chemical Resistance: Fluid degradation with Lewis acids: 15% wt AlCl3, at 120 ºC Competitive product1:1 Mix of DuPont™ Krytox® and competitive productKrytox®As a vacuum pump fluid, DuPont™ Krytox® delivers superior performance in the presence of Lewis acids and outperforms the leading competitor in extreme environments
10 DuPont™ Krytox® Vacuum Pump Fluids …meeting or exceeding the warranty requirements of all major pump manufacturersProductViscosity*Vapor Pressure**Pour Point***20 °CcSt50 °C100 °C20 °C,Torr100 °C,°CKrytox® 15066015410-710-3-60Krytox® 151414030710-4-54Krytox® 1525250501010-5-48Krytox® 15313106312.5-41Krytox® 161818038810-8-40Krytox® 1645450801610-11-35Krytox® 16256271744410-1410-9-15Krytox® 1635035006008510-1510-10-5*Viscosity, centistokes or square millimeters per second—plus or minus 10% indicated values**Vapor pressure torr (Knudsen Method) – equal to or less than indicated values***Pour point, °C—equal to or lower than indicated values
11 DuPont™ Krytox® Vacuum Pump Greases Vapor Pressure Data Viscosity20 °CVapor Pressure240 AB2301 x 10-6240AC8002 x 10-8240AD16001 x 10-9EG2000EG3000LVP27001 x 10-13L-150350L-2205401 x 10-10
12 DuPont™ Krytox® LVP High Vacuum Grease Less than 1x10-13 torr. vapor pressure at 20 °C (68 °F)Less than 1x10-5 torr. vapor pressure at 200 °C (392 °F)Chemically inert and nonflammableOxygen compatibleThermally stable to 300 °C+ (650 °F+)Very good lubricantOne grease replaces many (hydrocarbons/silicones)Competitively priced vs. all other greases
13 Typical Customers of DuPont™ Krytox® Vacuum Pump Fluids Vacuum Pump Manufacturers (OEMs)OEM Aftermarket Repair/ServiceLarge semiconductor fab plantsSmall, non-OEM vacuum pump repair specialistsVacuum Pump Manufacturers (OEMs) – including Busch, Ebara, Edwards, Leybold, Pfeiffer Vacuum; Solvay dominates the EMEA marketOEM Aftermarket Repair/Service, e.g. large overhaulers such as Intel, Siemens, etc. – most pump manufacturers also have a service and repair side – this can often be larger volume than OEM first fillLarge semi-con fab plants – end users of vacuum pumps and fluids. Large facilities usually have supply deals linked with major pump OEMs. Supply of VPF is usually part of the contractSmall, non-OEM vacuum pump repair specialists – typically service for rotary vane vacuum pumps, dry pump gearboxes, and roots blower gearboxes (small volume users with whom the UK has been successful in promoting Krytox®)
14 Typical Industry End Users of Vacuum Pump Fluids Medical ResearchMetallurgical IndustryFood Processing IndustryOptical IndustryPharmaceutical IndustryToy and Jewelry IndustryTextile IndustryNuclear engineeringAutomobile IndustryResearch and DevelopmentChemical IndustryElectrical IndustryScientific InstrumentsPrecision Mechanics IndustryUtility Goods and Commodities IndustryIncandescent Lamp and Electron Tube ProductionRefrigeration IndustryPlastics Industry
15 Why Convert to PFPE from Hydrocarbon? PFPE is nonflammable, eliminating risk of fire and/or explosionUsing PFPE eliminates used oil waste and reduces fluid changesFluid can always be regenerated to “new”PFPE is environmentally acceptable
16 Comparison by grade of DuPont™ Krytox® to competitive product VPF FluidKrytox®Competitive Product15066/6151414/616/6152525/6GreaseLVPYVAC 3EG3000RT-15
17 DuPont Fluid Regeneration Service High recovery yieldsEquivalent performanceHighly cost effectiveThe DuPont Regeneration Service restores contaminated Krytox® or other PFPE vacuum pump fluids to their original state—at high recovery yieldsRegenerated fluids give equivalent performance to new fluids in production equipmentThe limitless re-use of Krytox® fluids and the high recovery yield of regenerated fluids make Krytox® vacuum pump fluids highly cost effective
18 Advantages of DuPont Regeneration Program Safe handling by skilled techniciansAll work done at DuPont’s primary manufacturing facilityYields of 95-98% achieved from regenerated PFPE fluidSafe and legal disposal of contaminantsRegenerated fluid equal to original finished product specsTechnical support / analysis availableFluid collection drums available upon requestReduces customer in-house handling of wasteEliminate disposal costs of fluid wasteCost savings achieved through reduced new fluid consumptionAssistance with shipping needs and labeling requirements
19 Can Vacuum Oils Be Reclaimed?* Adequate reclamation is a lengthy process that includes the following steps:Analyzing the used oil to determine its chemical contentChoosing the correct materials to neutralize the particular contaminants in the oilFiltering coarse and fine particulatesDegassingVacuum molecular distillation to remove volatile componentsFinal filtration to remove particulatesAnalyzing the reclaimed oil to ensure it meets its original specificationReclamation of perfluoropolyether oil could also include a fluorination step.“Clean vacuum oil is one of the most important factors in ensuring good performance and long life of vacuum pumps. If the oil isn’t reclaimed properly, it can damage your pump.”DuPont can conduct the vacuum molecular distillation process—to achieve the proper viscosity. Distillation capability allows the customer to mix different grades of oil.* Excerpted from Leybold Engineering Notes
20 More DuPont™ Krytox® products for your industries . . .
21 DuPont™ Krytox® XP Lubricant family Formulated with patented, soluble additives added to enhance the performance of Krytox® PFPE greases and oilsSoluble additives cannot be washed away or left behind with grease thickenerBearings run quieter – no solid additives to make noiseLower wear extends bearing and component lifeAnticorrosion protection reduces rusting and allows longer grease and bearing lifeExtreme pressure properties of additive protects bearings under high loadsOther perfluoropolyether (PFPE) greases typically use solid additives for anti-rust, anti-wear, or extreme pressure performance, and are held in place by the grease thickenerOther perfluoropolyether (PFPE) greases typically use solid additives for anti-rust, anti-wear, or extreme pressure performance– these solid components are mixed into the grease and are held in place by the grease thickenerThe bearing race on the left clearly shows there is no corrosion when the XP additive is present. The bearing in the center shows traces of rust with standard additives, and the bearing on the right shows heavy rusting with no additives.
22 Linear DuPont™ Krytox® Vacuum Greases All are chemically inert & nonflammableAll are thermally stable to 300 °C (590 °F)All have excellent viscosity indexAll have low vapor pressuresAll perform over broadest temp rangeCompetitively priced vs. linear greasesCompetitive with Nye, Castrol Braycote, Fomblin Z, LTI, ALIBase Oil Characteristics
23 Linear DuPont™ Krytox® Vacuum Greases L100 Greaseambient temps (-60 ºC to 220 ºC) (-76 ºF to 428 ºF)very good vapor pressureL150 Greasemoderate temps (-55 ºC to 250 ºC) (-67 ºF to 482 ºF)excellent vapor pressureL220 Greasehighest temps (-50 ºC to 300 ºC) (-58 ºF to 572 ºF)outstanding vapor pressure
24 DuPont™ KryPro® EG 2500 Cleanroom Grease Designed for non-vacuum applications, such as ball bearings, linear screws, lead screws, linear rails, etc.Cleanroom friendly (high purity/low metals)Low noise/low vibrationExcellent anti-wear propertiesCOF is 5X lower than competitive lubesExtremely low metals content
25 DuPont™ Krytox® GBO Oils for Dry Pumps Krytox GBO 14 & GBO 25Designed for dry pump gear boxesGBO 14 viscosity equivalent to 1514GBO 25 viscosity equivalent to 1525All properties equivalent to VPF grades except vapor pressureLower cost than VPF
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