At that time, both fires on U.S. Navy ships and aircraft were occurring due to the use of mineral oil-based hydraulic fluids. One reason for moving to low-viscosity oils is to focus on initial and long-term fuel economy. Grade Name. For instance, many producers have tailored production to Group II+ stocks at 118119 VI, just below the ambiguous Group III limit of 120VI. Leaking fluids from equipment used in sensitive geographical areas can have long-term negative consequences on the environment. Specific heat is the amount of heat per unit mass required to raise the temperature one degree Celsius. Synfluid PAOs are already known for their excellent low-temperature and oxidative stability properties. The superior low-temperature flow characteristics of PAOs ensure faster coating of critical parts in the compressor during startup, minimizing wear. One example is the advantage PAO has over mineral oil in the area of high-temperature stability. Both basestock types have low volatility and high fire points (when stabilized) for a given viscosity grade. C12-derived PAOs also provide advantages with higher Viscosity Index (VI), better flash/fire points, and even lower cold crank simulated viscosities. Compatibility for Base Oil Families Soluble in large fraction Weakly soluble Insoluble Varies with grade Solvent Compatibility for Base Oil Families Note 1: For cross reference to trade names, consult Modern Plastics Encyclopedia, '97, McGraw-Hill Company, New York, 1997. Our Synfluid mPAO is based on a single monomer, AlphaPlus 1-Octene. When PAO 5 and PAO 7 are compared to equiviscous blends of other PAOs, the volatility advantage can be seen more clearly. default polyalphaolefin compatibility chart. In terms of viscosity, there are tradeoffs in choosing one PAO over another: energy consumption (heat dissipation and production throughput) versus safety of operations (impacted by flash/fire points and volatility). High energy costs have hit both businesses and consumers hard, and the pressure is on to conserve. PAO-based greases are typically used at temperatures over 100C because of thermal and oxidative concerns. Ethylene is produced by cracking either crude oil or natural gas. 180 0 obj Although PAOs are not considered biobased themselves, in a blend they contribute certain performance benefits. 0000135615 00000 n There can be many benefits from choosing a high VI base fluid. One application in which they have not worked well is in high-temperature (high-pressure) reciprocating air compressors where valve deposits have been an issue. endobj Some of the advantages of PAO-based lubricants are summarized in Table 5. It is possible to get added property benefits from C12-based Synfluid PAOs. For example, one would not be able to make an 0W-20 oil with a C12-derived PAO as the viscosities are too high. <> High temperatures can thin and break down oil, crippling its lubricating ability, whereas low temperatures can rob a lubricant of its ability to reach critical parts. It is true there are many high-quality base oils around, but the highest quality is still achieved when Synfluid PAOs are chosen. 0000001211 00000 n Satisfactory to 72F (22C) 2. The difference in the CCS viscosity at -35C is 15 percent, which is substantial. This provides several advantages, one of which can be illustrated by gas chromatography. H|% `\ml emt8uHJs;7W*"_?~o~O? xb```f``5``c`X% @kVTW(4n5@,6$ ^09z| R/'T4D:/Iih2f/W8 CV@Vb n m[ iF ^` -2 This Chemical Compatibility Guide is offered for informational purposes only and was developed from information sources other than SpillTech. xmp.id:B2FC01B10F2068118083E936383AAE83 Remember, PAOs are carefully designed, not refined. However, these products have demonstrated unique advantages in Sequence IIIF, VW T4 and TDI tests due to many of the other properties that are inherent in them. You would expect the viscosity to improve with a lower pour point, but the opposite is true. The chart below shows the operating temperature range of a PAO-based, OMG process grease versus comparable mineral-oil-based grease. However, PAGs and PAOs are two totally different chemical types of synthetic base stocks. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text]/XObject<>>>/Rotate 0/Thumb 162 0 R/TrimBox[0.0 0.0 792.0 612.0]/Type/Page>> The properties, advantages, and disadvantages reviewed provide some of the main reasons why. John Sherman is Shell Project Lead PAG Lubricant Technology, Industrial Oils and Tech Services; Robert Profilet is Technology Manager, Industrial Lubricants; Warren Cates is Shell Senior Researcher, Industrial Oils and Tech Services; Iris Song is Shell Engineer, Industrial Oils and Tech Services; and Sameer Sathaye is Shell Project Leader Industrial Oils, Industrial Oils and Tech Services. concentration from 0.5 percent to 1 percent. Additionally, PAOs have high viscosity indices, which lead to less film thickness reduction at elevated temperatures. These properties translate into easier distribution of the grease and improved energy efficiency in the equipment. False General properties of water-soluble, water-insoluble, and oil-soluble PAG basestocks are shown in Table 1. Polyalphaolefin (PAO) fluids are the most common major synthetic base oil used in industrial and automotive lubricants. The chart below shows how Synfluid PAOs can help meet these challenges with the excellent volatility properties of our PAO 5, 7 and 9 cSt grades. Finally, due to their excellent response to antioxidants, Spectra-Syn Plus PAO can be formulated to resist thermal oxidative attack. Synthetic basestocks, more so than in mineral oil basestocks, are the primary contributor to most of the basic properties of the lubricant, including oil or water solubility, low-temperature fluidity, lubrication, volatility, ignitability, and seal and paint compatibility. We have measured a 25 percent improvement in oxidation induction times simply by decreasing the test temperature by 10 degrees. So, whether used for gear or engine oils, PAOs provide more consistent properties and a level of purity not available from other base oil groups. 0000001764 00000 n polyalphaolefin-based lubricants. 93 0 obj 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. It is a synthetic hydrocarbon (SHC) that mimics the best hydrocarbon (branched) structure found in mineral oils. xref Our safety, technical and regulatory product information, as well as company and industry resources. 0000001493 00000 n Driveline specifications continue to become more stringent. Since PAO fluids are synthetic hydrocarbons, they are compatible with and often combined with mineral-based oils. 0000010736 00000 n This process creates a polymer backbone where oxygen is every third atom, which gives PAG basestocks their distinctive chemical attributes and allows formulators to synthesize various combinations of starters and monomers (block, random, and homopolymer) to create custom basestock types for specific applications. PAOs demonstrate advantages in three key areas: safety, performance and environmental sensitivity. All rights reserved. Volatility is a concern for many applications, especially where higher operating temperatures occur or longer service life is desired. 0000010623 00000 n The chart above shows the exceptional pour points of Synfluid mPAO 65, 100 and 150 cSt compared to traditional PAO 40 and 100 cSt. 2013-07-10T14:05:23-05:00 Polyalphaolefins (PAO)-60 to 125 C Stable, lubricious fluids compatible with most plastics and elastomers. 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. Since then, the company has expanded PAO as well as ethylene production, both basic building blocks for many petrochemical processes. The magnitude of these benefits will depend on the particular formulation. While viscosity improvers can enhance VI, they can break down over time, resulting in diminished performance. This is the case for blending Synfluid PAO 5 and PAO 7. There are many advantages! Polyalkylene glycol (PAG) and polyalphaolefin (PAO) are two synthetic lubricant options for industrial applications. In addition to these advantages, kosher certification for Synfluid PAOs is available upon request. Synfluid PAOs are crafted from an on-purpose process that yields a consistent, high-quality product. Both the foam tendency (the initial amount of foam generated in this test) and the time required for the foam to collapse are remarkably better for Synfluid mPAO. Because metalworking processes can generate heat, these properties give you an intrinsic safety margin over the more volatile oils that are typically used. Therefore, they are commonly blended or combined with organic ester synthetic base oils to provide a blended base oil that does not have these negative characteristics. End-users must first select a lubricant based upon its intended application, such as engine oil, transmission oil, hydraulic oil, wire rope lubricant, electric motor grease, etc. But what happens below 40C? Furthermore, the advantages of exceeding the minimum requirements for driveline fluids will enhance the benefits of the finished lubricant. When you compound this with difficult operating conditions, such as extreme temperatures, high loads or extended operations, a high-quality base oil may be necessary. We are first in your inbox with the most important news in the industry―keeping you smarter and one-step ahead in this ever-changing and competitive market. 0000036701 00000 n Group IIIB was unable to consistently pass the TDI or M111 tests. Chemical Compatibility Guide; what chemicals to use; guide for chemical uses; general guideline for pump material selection; material chemical compatibility 0000004079 00000 n Typically, as the viscosity drops, the volatility increases. They're found in everyday food and available as supplements. Chemical Compatibility Guide - Galvanized Steel For UltraTech Spill Containment Products This listing was prepared to provide guidance to the chemical compatibility of UltraTech Spill Containment Products which are manufactured and constructed of galvanized steel. Due to constraints with the supply of 1-decene, the traditional feedstock for PAOs, producers have experimented with alternative feedstocks to meet demand. www.topworx.com Epoxy Polycarbonate PBT Brass 316 S.S. 304 S.S. 400 S.S. Aluminum Viton Buna N Neoprene EPDM Silicone Ammonium Phosphate, Monobasic A C B B B A A A A A Ammonium Phosphate, Tribasic A B B B B A A A A A Ammonium Sulfate A B B B A A A A A A Ammonium Thiosulfate A A A Amyl Acetate A A A A B A D D . endobj 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. <> 0000048689 00000 n The dodecene-based products offer lower volatility at comparable viscosities to the decene-based products.
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