The combination of air and oil can often lead to foaming issues. COMPATIBILITY CHART Chemical Natural Rubber SBR, GRS Butyl EPR, EPT, EPDM Buna-N, Nitrile, NBR Hydrin Neoprene Hypalon Urethane, Polyurethane Polysulfide Silicone Fluorosilicone Fluoro Elastomers LEGEND A - RECOMMENDED B - MINOR TO MODERATE EFFECT C - MODERATE TO SEVERE U - UNSATISFACTORY BLANK - INSUFFICIENT DATA Acetaldehyde C U A A U C C U C . endstream
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These combined benefits provide the properties required for severe service applications and extended drain intervals. The plot below shows a comparison of the air release times exhibited by ISO VG 320 blends composed of our Synfluid mPAOs, and traditional HV PAOs with PAO 8 cSt. converted 0000001605 00000 n
Leaking fluids from equipment used in sensitive geographical areas can have long-term negative consequences on the environment. startxref
The current trend toward lower viscosities, while providing for extended drain capabilities, does present an interesting challenge for base oils. 0000139372 00000 n
Base Oil Compatibility Chart Base Oil . With the powerful combination of MOLYKOTE. We were the first to offer these materials to the marketplace, and many years of experience with 1-dodecene-based PAOs has helped us to refine the process and deliver very high-quality products. A polyolefin is a type of polymer with the general formula (CH 2 CHR) n where R is an alkyl group. Actions. Chemical Compatibility Guide Metallocene-catalyzed commercial mPAO basestock grades can attain a viscosity of 300 cSt at 100C. Regarding the A.O. 10.1 Introduction. As the viscosity grade decreases, the volatility and high-temperature/high-shear viscosity will be limiting factors. Polyalkylene glycol (PAG) and polyalphaolefin (PAO) are two synthetic lubricant options for industrial applications. 101 0 obj Synfluid PAO 5 and PAO 7 also offer several advantages in addition to the volatility, such as low pour point, high viscosity index, improved oxidative stability and excellent low-temperature viscosities. Specific heat is the amount of heat per unit mass required to raise the temperature one degree Celsius. With the powerful combination of MOLYKOTE Specialty Lubricants and DuPont Polymers, our understanding of grease-polymer compatibility allows our customers the unique ability to select products faster and move through validations with confidence. endobj The chart below shows pressure coefficient comparisons between PAOs and Group III mineral oils versus pressure: Gear systems are specially designed and require highly specialized lubricants. Some of the disadvantages of PAO-based lubricants are outlined in Table 6. They're found in everyday food and available as supplements. (2;2222;;;;;;;;;;;;;;;;;@@@@@;@@@@@@@@@@@@@@@@@@@@@ " B Three stringent test standards required by Volkswagen and Mercedes-Benz engines show the impact of the variability of Group III oils: This data illustrates lot-to-lot variability, which has been recognized for the Group III oils. PPDs act only on linear or waxy compounds, and these characteristics are absent from PAOs. 0000162144 00000 n
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U:iY?_/}|(P^@m`kbu_?>sG-rj?~-r[?wp_2W,)!BkBkB*.]Y""ZBmSB&,zB}B+!B]}u}>gSSS Synthetic lubricants can meet these demands because they perform better than mineral oil-based lubricants in many or all the critical performance areas: reduced wear and friction, resistance to sludge formation, lower volatility, greater corrosion protection, and improved thermal and oxidative stability. One way to achieve a higher VI base fluid is to shift from a decene-based PAO to a dodecene-based PAO. Synfluid PAO improves finished lubricant performance when formulated into biodegradable and biobased lubricants in low-temperature viscometrics and oxidative stability. Synfluid PAOs have very narrow molecular weight ranges, which are attributed to our high-purity feedstocks. The term synthetic hydrocarbon (SHC) is a general term. Naval Research Laboratory (USNRL) was begun to develop hydraulic fluids that would be more fire-resistant than the ones used at the time based on mineral oil. Synfluid PAOs are already known for their excellent low-temperature and oxidative stability properties. PAOs help to balance the protection and energy conservation requirements in equipment because they are more Newtonian than mineral oils. Group V oils also include esters and naphthenic oils. Synfluid PAOs also have a very high degree of saturation, which in lubricants provides oxidative stability. 1 - High Resistance 2 - Limited Resistance 3 - No Resistance . endobj 175 0 obj 0
Sorry, you need to enable JavaScript to visit this website. The qualitative chart below describes the impact of each grease component on certain performance characteristics: Clearly, the base oil dominates some grease properties, while the additives or thickener drives others. You see, PAOs are carefully designed, not refined. It is a synthetic hydrocarbon (SHC) that mimics the best hydrocarbon (branched) structure found in mineral oils. from application/x-indesign to application/pdf The properties, advantages, and disadvantages reviewed provide some of the main reasons why. General properties of water-soluble, water-insoluble, and oil-soluble PAG basestocks are shown in Table 1. PAOs are uniquely suited to aviation hydraulics because of the inherently high flash/fire points and low volatility. Our C10-based products, commercialized in the 1970s, were the first in the market. The latest news, content and events about our company, initiatives, markets and products. However, nothing is perfect, and polyalphaolefin base oils do have a few negative characteristics. Jun 09, 2022. polyalphaolefin compatibility chart . H*T034R0 BC0k ` f-
3.0 CHEMICAL COMPATIBILITY GUIDE FOR METALLIC MATERIALS In addition to this chemical compatibility chart, report TR-60C, Bal Seal has two other reports: report TR-60A "Chemical Compatibility Guide for Bal Seal PTFE, Filled PTFE, and Polyethylene Seal Benefits of the new system are a much higher viscosity index (VI), superior pour points and improved low-temperature fluidity, all of which contribute to improved energy efficiency. xref
These excellent pour points are achieved while increasing the viscosity indices (VI) over traditional HV PAO.
176 0 obj From then on, the company introduced 1-dodecene-based PAOs in 1995, which have grown steadily in popularity. endobj 0000000995 00000 n
Rotary screw compressor oils formulated with PAO offer performance benefits not obtainable with a mineral-oil-based formulation. Low molecular weight compounds will degrade other performance requirements, such as volatility, flash and fire points. These advantages are achieved without the need for VI improvers or other additives, which may promote other deleterious effects as they degrade. This chart illustrates another benefit of using Synfluid PAOs at increased antioxidant treat rates. The chart below illustrates the relative effect base oils have on the operating temperatures in a modified four-ball machine. Chemical Compatibility Chart (cont.) But what happens below 40C? Aviation hydraulics require the use of PAOs because of the inherently high flash/fire points and low volatility. PAO-base oils help improve fuel economy in engine and drivetrain oils by reducing viscosity, volatility and traction coefficients as the chart below shows: These results show the potential for reducing friction loss using PAOs, which also typically have lower pressure-viscosity coefficients than mineral oils reducing elastohydrodynamic gear friction losses and energy consumption. Volatility is a concern for many applications, especially where higher operating temperatures occur or longer service life is desired. The PAOs . and PAO plays an integral part of meeting the challenge for top-tier oils. Conversely, if you reduce the temperature, the reaction rate decreases and the oil lasts longer, providing better protection. 0000035588 00000 n
Due to constraints with the supply of 1-decene, the traditional feedstock for PAOs, producers have experimented with alternative feedstocks to meet demand. cally stable, have good compatibility with mineral oils and can be combined with other more polar synthetic basestocks (e.g. Some properties such as Viscosity Index (VI) or C viscosity can approach those of PAOs. Some specifications have a low-temperature MRV requirement. PAG- and PAO-based lubricants are used in multiple industries and, as synthetics, offer improved performance over mineral oils. 9 0 obj
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Using PAOs with biobased oils can provide both high performance and biodegradability. 0000052609 00000 n
PAOs demonstrate advantages in three key areas: safety, performance and environmental sensitivity. As the chart above clearly demonstrates, the difference in viscosity as a function of shear rate is magnified as temperature decreases. These products are acceptable for use as a lubricant (H1) or as a lubricant component (HX-1), with incidental food contact in and around food processing areas. %PDF-1.6
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The second step is the hydrogenation of the remaining double bonds (unsaturation) in the oligomer and subsequent distillation to separate the unreacted monomer and light-viscosity grade PAO. The most favorable performance is achieved by using the highest-quality base oils. You can see a medical doctor for your burn, but Dr. Ken Hope can help with your base oil and formulation challenges. 232 0 obj PAO fluids are classified as a Group IV base oil and are made by a two-step reaction process using linear alpha-olefins like 1-decene. PAOs help meet and exceed the formulation requirements necessary in a wide variety of specifications, including Allison TES-295, Eaton PS-162 and Mil-2105. The chart above shows the exceptional pour points of Synfluid mPAO 65, 100 and 150 cSt compared to traditional PAO 40 and 100 cSt. endobj Use of WGHFs increased tremendously due to the publication of the Luxembourg Report in 1961, outlining minimum standards for hydraulic fluid fire-resistance in European coal mines. Ethylene glycol dimethacrylate is the enoate ester that is the 1,2-bis (methacryloyl) derivative of ethylene glycol. Polyalphaolefin does not contain ring structures, double bonds, sulphur, nitrogen components or waxy hydrocarbons. One key advantage PAOs have over mineral oils is a greater ability to dissipate heat. Some claim the Viscosity Index (VI) is the overriding parameter used when choosing a base oil. 0000032842 00000 n
They have different characteristics, meaning that one may be superior to the other under certain circumstances. B = Good, Minor Effect, slight corrosion or discoloration C = Fair, Moderate Effect, not recommended for continuous use. Heavier components adversely affect low-temperature performance and pour point. These requirements or specifications will generally identify or recommend a product type (mineral oils, synthetic fluids, or bio-based fluids) and the proper performance requirements (developed into the lubricant by the component chemistry) to allow the machinery to run at an optimum level. PAO- and PAG-based lubricants are both hydrolytically stable and have low pour points. 0000018828 00000 n
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Our safety, technical and regulatory product information, as well as company and industry resources. By utilizing this new process combined with the inherent properties of PAOs, a grease can be produced that can be used in both extreme high- and low-temperature applications. Polyphenols are a complicated group of plant-based chemicals. 0000042568 00000 n
More uniform in structure than conventional PAO basestocks, they provide similar advantages of high viscosity indices, excellent low-temperature fluidity, and shear stability but with additional thickening ability. Both lubricant types are used in industrial gearboxes, compressors, and even air conditioning systems. Chemical kinetics tell us that if you reduce the temperature, you will reduce the reaction rate. A process enhancement at Chevron Phillips Chemicals manufacturing facility has resulted in up to a 30 percent improvement in oxidative stability when used with aminic antioxidants in Rotary Bomb Oxidation Tests (RBOT). The trend falls short when comparisons are made between PAOs and mineral oils, based solely on the VI. Technical White Oils are approved for incidental food contact at USDA-approved meat and poultry plants. mary berry grandchildren names . 142 0 obj
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PAO-based greases are typically used at temperatures over 100C because of thermal and oxidative concerns. When possible, testing compatibility between the specific PAG lubricant to be used and the specific seal types or paints to be used is recommended. General properties of low- and high-viscosity conventional PAO, and metallocene-catalyzed mPAO basestocks, are shown in Table 4. A formulator choosing the right base oil is like a craftsman choosing the right tool it needs to fit the job. Additives will increase the overall viscosities; however, PAO base oil leaves plenty of room for meeting specifications. polyalphaolefin-based lubricants. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Thumb 161 0 R/TrimBox[0.0 0.0 792.0 612.0]/Type/Page>> A product developed by Renewable Lubricants Inc. (RLI), with assistance from Chevron Phillips Chemical, uses Synfluid PAOs combined with biobased oils and specially designed additives. polyalphaolefin compatibility chart. If a certain application can sacrifice a 10 15C increase in the pour point, then there is as much as a 25% improvement in volatility, as shown in the chart below. These include PAOs and also relatively common polyisobutenes (PIB), which are sometimes used as oil additives or as base oils in two-stroke engines. First, dont touch the gear box; you will burn your hand. 0000002192 00000 n
Low-temperature fluidity and high-temperature thermal and oxidative stability are key factors for choosing a PAO. When PAO 5 and PAO 7 are compared to equiviscous blends of other PAOs, the volatility advantage can be seen more clearly. Reducing the viscosity of engine and drivetrain oils lowers fuel consumption by decreased churning losses and viscous drag. endobj The challenge presented to a formulator is maintaining the performance levels while achieving biodegradability. polyalphaolefin compatibility chart. 0000010623 00000 n
III F challenge formulators, and their suppliers, to step up performance for the next generation of engine oils. Lack of mineral oil solubility is a barrier to expanded use of PAG-based lubricants. European specifications, as well as those in other regions, are expected to tighten. Because of this extensive chemical compatibility, which spans considerable concentration and temperature ranges, . 0000036915 00000 n
4 Chemicals PVC CPVC PP PVDF ABS. This Chemical Compatibility Guide is offered for informational purposes only and was developed from information sources other than SpillTech. The degree of the disadvantage for seal and paint compatibility may depend on the specific PAG basestock type used (such as water-soluble, oil-soluble, etc.). Polypropylene Satisfactory to 120 F. 4. Some of the advantages of PAO-based lubricants are summarized in Table 5. This is just one of the many performance advantages of Synfluid mPAO. PAO basestocks were developed in the 1930s and used commercially as a base for engine oils starting in the 1970s. It is possible to get added property benefits from C12-based Synfluid PAOs. Furthermore, the process is a simpler, more energy-efficient route for grease production. PAO quality is unrivaled in the industry. 0000036005 00000 n
PAG-based lubricants are commonly used in compressors, gearboxes, air conditioning systems, metalworking, quenching, and hydraulic systems where fire-resistance or environmental acceptability are required. In addition to the low temperature performance demonstrated by CCS, the volatility and viscosity index of the PAO 5 and 7 blend are improved over traditional PAO 6. However, moving to lower-viscosity oils is a possibility only if you can maintain a low Noack volatility for emissions control and lubricant stability. BioPreferred is a registered service mark of the United States Department of Agriculture. 0000013783 00000 n
The superior low-temperature flow characteristics of PAOs ensure faster coating of critical parts in the compressor during startup, minimizing wear. endobj After the formation of the Chevron Phillips Chemical joint venture in 2000, a 10 KTA PAO unit expansion followed soon thereafter. Better heat transfer coefficients, increased lubricity and the basic chemical structure of PAOs all contribute to the lower temperature in the gearbox.