The NLGI grease guide states a thickener is the solid particles which are relatively uniformly dispersed to form the structure of lubricating grease in which the liquid is held by surface tension and other physical forces..
Improving the rheological and tribological properties of lithium The first major characteristic is mechanical stability, or shear stability, which is the ability of the grease to remain consistent under mechanical shear forces.
PDF Shell Gadus S2 V100 2 Thickener Type. The oxidative resistance of lithium greases is generally improved with anti-oxidants.
PDF Jeanna Van Rensselar Grease chemistry: THICKENER STRUCTURE as saponification, soap dissolution, re-crystallization and The purpose of this research is to prepare an homogenization [8]. It is the most preferred bearing grease in almost all industrial sectors. Grease is one of the oldest lubricants used by humans dating back to 1400BC. dropping point, then compared to standard lithium 12-HSA and lithium complex formulations produced in-house with the same base oil. 10. Lithium soap: 2 Low temperature performance Compatibility with plastics: PERMALUB CPL-501: Synthetic oil: Lithium soap . Lubricating grease is a thickened oil (gelled). 1347613 [LMCG1/0.4 from SKF Group (The)] from RS Components, Ltd. The EC Number, formerly known as the EINECS number is a unique 7-digit number (format: xxx-xxx-x) assigned to chemicals registered with the European Chemicals Agency (ECHA). They are used in applications that require excellent structural stability at low to moderate temperatures, good water resistance, good low temperature pumpability, and good low to medium operating temperatures. -How does cooling rate affect grease properties?
Lithium greases provide good lubricity and have great shear stability, thermal resistance and relatively low oil separation. The solubility of the thickener determines the water resistance of lithium complex and simple greases. Unirex EP 2 is a premium quality grease that combines advanced lithium complex soap technology and leading edge polymer enrichment technology to provide excellent adhesion, water wash-out resistance, mechanical stability and high temperature performance. Performance, Features & Benefits Reliable high temperature performance Very good performance up to +1300C, resulting in longer bearing life. The thickener system provides a high dropping point, excellent resistance to water wash, and a tenacious structural stability. Copyright 2022 Redlist, LLC. Quick Links. Here are a few of the suitable uses: There are many factors to consider when choosing lithium soap-based grease. Grease, Mineral Oil and Lithium Soap Thickener. The end result is a grease with unknown performance properties including load, shear, temperature stability, etc.. Available as an extreme pressure (EP) grease, which adds high load and anti-wear abilities.
Mobil Aviation Grease SHC 100 - ExxonMobil Lithium grease has excellent water resistance (not as good as calcium), superior mechanical or shear stability, excellent thermal stability and, excellent storage stability.
Feature - Society of Tribologists and Lubrication Engineers Lubrication grease is a mixture of oil and soap or another thickener. Lithium grease is probably the best multi-purpose grease ever developed. So, in this blog post, well take a look at it and explain why it might be the best choice for your application. These observations may very. Complex soaps. This specification defines grease composed of mineral oil and lithium soap thickener and having consistency of one, two or three (1, 2 or 3). lithium 12-hydroxystearate grease is probably the best multipurpose grease ever developed.
Lithium complex grease with improved thickener yield PDF Fundamental study of the initial agglomeration of lithium soap - NLGI What is Lithium Soap-Based Grease? - Redlist If you provide more services, kindly contact me via the mentioned e-mail.
Bicycle bearing greases explained | BikeGremlin MOLYKOTE PAO Greases, DuPont - ChemPoint The brous structure of lithium soap thickener in grease was known from about that time through electron micrographs produced by Brown, Huddson, and Loring. The soap is formed by reaction of lithium hydroxide with the mixture of fatty acid and dibasic acid. We use our own and third party cookies to personalize content and analyze web traffic. Chem LiHSA is Lithium 12 Hydroxystearate. It is the most common soap used to stabilize and thicken lubricating greases. And VI IS ALSO AVAILABLE IN 205 LITRES BARRELS. So, lithium hydroxide-based thickeners have the same properties. The portion of the grease that determines the compatibility is the thickener. Grease Manufacturing: Lubricating grease is no longer an art but a science. Along with 130C (266F) continuous operating temperature and 190-200C dropping point. More than 90% of all bearings have grease as a lubricant. Kinematic Viscosity: 185.0. These performance benefits are due to the addition of a complexing agent during the formulation process, which increases cross-linking of the grease fibers and results in a stronger matrix. Similarly, manufacturers use naphthenic base oils to achieve better thickening by soaps and low-temperature fluidity. The manufacturing process and formulating of grease is pure chemistry. In our next post, well discuss non-soap thickeners. April 1, 2017. Not all greases are created equal some will withstand high temperatures, while others are better at resisting water and other contaminants. They perform well in a wide range of applications due to their versatility. MOLYKOTE 55 O-Ring Grease is formulated from a high-quality silicone base oil with added synthetic ester and a lithium soap thickener. According to a recent NLGI survey, the production of lithium greases is higher than all other greases combined. However, a good complex will have a significantly more stable structure and as the temperature approaches 300C may not show an apparent loss of structure. More than 90 % of thickeners are soap based. The chart below summarizes the key characteristics of each thickener we have discussed. Lithium grease remains stable in high temperature compare to Silicone grease.
What is the thickener in lubricating grease? - NLGI PDF Modified Fatty Acids as Alternative Soap Thickeners for Lubricating Greases Thus, it iskey you determine which thickener is best suited for use in your specific application. Different thickener systems can react with each other to modify the physical and chemical structure resulting in the inability to hold or release the base oil. Lubricating greases are commonly formulated as mixtures of an oil and a lithium soap thickener. Comment * document.getElementById("comment").setAttribute( "id", "a5737489e58065245e5e0a21a61bc784" );document.getElementById("d1d327f8af").setAttribute( "id", "comment" ); Save my name, email, and website in this browser for the next time I comment.
Lithium soap complex - CPID The environmental impact of grease manufacturing plants and the use of grease is the domain of health and environmental sciences. Manufacturing. [1]. Lithium soap is a soap consisting of a lithium salt of a fatty acid. For high viscosity applications, it is a blend with bright stock.
US5236607A - Preparation of lithium soap thickened greases - Google Lithium 12-hydroxystearate - American Chemical Society Types of Non-Soap Thickeners SKF LGMT 3 is mineral oil based, lithium soap thickened grease. Cool to below 80C (176F), add additives, add more base oil to achieve desired NLGI grade and mill.
Full article: A Model for Shear Degradation of Lithium Soap Grease at These thickener types have an advantage over simple soap because of better high-temperature properties. Lithium greases are traditionally used in automotive and industrial applications such as bearings. This produces a simple lithium soap that is the most common worldwide. Excellent rust inhibiting properties. The main thickener used in grease is a metallic soap. Lithium 12-hydroxystearate is a fatty acid salt commonly known as a "lithium soap". Shut off the heat and hold the batch at 200-210C (383-410F) for 15 minutes while mixing. Use Temperature: -22 to 284. For starters, almost 70% of grease on the market is lithium soap-based grease! Lithium grease was invented in the early 1940s. It is a highly versatile, multipurpose grease invented in the 1940s.
Sinopec Lithium EP Grease NLGI 1 - 17kg - Cng Ty TNHH Du Nhn Premium Lithium Complex Grease . The brine usually is a metal hydroxide, e.g. It has lower adhesion properties, so it is not suitable for sliding or reciprocating applications. -How is intermediate and final temperature & ramp time during grease blending affect yield and grease properties? Its Drop point lies between 177 - 204 C.
A Guide to Grease Thickeners Twin Specialties Corp. Lithium grease is probably the best multi-purpose grease ever developed. Lithium Complex. The calcium will also shorten and smooth the coarse fibers of the sodium soap. Suitable for use at temperatures up to 130C (266F), Low, medium, and high-speed bearing grease, Gear lubrication for open and enclosed gears. Lithium greases are expensive due to the high price of raw materials. Along with thickener and base fluid, most modern greases containperformance additives. Invented in 1938, the production of lithium grease is still higher than all the other greases combined. The first group is comprised of thickeners that undergo a chemical reaction to form the thickener, such as calcium sulfonates and polyureas.The second group is a dispersion of particles in oil that includes silica, organo-clays, polytetrafluoroethylene (PTFEs), and carbon black. Here base oil is available in 205 litres. Greases consist 75-98% of base oil. Complex greases typically give you improved temperature resistance and can handle applications where there are short temperature excursions up to 175C; higher is possible provided that the base oil used is stable at that temperature. The use of silicon oil and especially in dielectric grease is increasing. But, what is the best option for your application? [3].For example, production and manufacturing-unit fall under mechanical and electrical engineering. Lubricating ability and storage stability are both influenced by the oil separation properties of grease. By comparison, Complex lithium-based thickeners were developed two decades later in 1962, and they are able to perform in higher temperature applications of more than 100 degrees Celsius. Non-soaps are split into two main categories. The LMCG 1 from SKF is a polyethylene thickened mineral oil-based grease with lithium complex thickening technology. Primary Chemical Name is the standard name assigned to a chemical substance. Boom bust Boom. Grease is a lubricant that reduces friction, resists water, and seals. This makes them an excellent choice for a variety of applications. All rights reserved. Begin cooling, apply cooling oil (remaining base oil) at a slow, controlled rate. Grease is one of the oldest lubricants used by humans dating back to 1400BC.[3]. For example, common grease additives areanti-corrosion,metal deactivators,antioxidants,and performance enhancement additives likeanti-wear propertiesand other characteristics. -How does start quantity base oil affect yield and grease properties? [3] In the real world, considerable formulation science is required to achieve commercially viable results. How to Check Transmission Fluid Without Dipstick, Lithium Grease: Composition, Formulations, and Applications, Calcium Grease: Composition, Formulations, and Applications, NLGI Grease Consistency, Classifications and Applications, Base Fluid SpectraSyn 100 (Synthetic G IV), About 2-20% of thickener system (thickener transforms a liquid base oil into a grease) [2], Multipurpose grease for automotive, industrial, and marine, Multipurpose lubricant with operating temperature not exceeding 130C (266F), Bearing grease for low, medium, and high speed*. The most common mixed soap grease is lithium/calcium as the lithium will improve the high temperature resistance of the resulting grease while the calcium improves the water washout and cost. The combination of sodium/calcium has also been used where the calcium improves the water resistance without lowering the operating temperature of the grease too much. The main components of lithium soaps are lithium stearate and lithium 12-hydroxystearate.[4]. Simple lithium-based thickeners were developed in 1940 and are ideal for low to moderate temperature applications of 100 degrees Celsius or less. At the end of the day, the most important thing is to select the right grease for the application. Lithium grease adheres particularly well to metal, is non-corrosive, may be used under heavy loads, and exhibits good temperature tolerance. The composition of the thickener is the mixture of lithium 12-hydroxyoctadecanoate and lithium stearate, and the molecular structure of lithium soap is shown in Fig. The lithium soap thickener appears like shorter and less intricate fibres network, while the calcium soap thickener remains dispersed in the grease matrix in form of larger spherical granules, with sizes of around 2-4 m. Soaps are salts of fatty acidsthey are prepared by heating a fat with a strong base. Add more base oil as needed to facilitate mixing. materials? They offer excellent lubricity, shear stability, and thermal resistance.
Lithium Multipurpose Greases - Grainger Industrial Supply Calcium greases have a higher water resistance than lithium grease. Not applicable.. GMW16601. The process to make simple lithium soap grease.
Lithium Complex vs. Calcium Sulfonate Grease - The Workhorses of the Welcome! ChemMatrix Inc. Your email address will not be published. Apart from this, naphthenic base stocks are dominant in grease applications because of their high solvency and better thickening power.Due to the higher price of synthetic fluids like PAO, they have limited use only.Vegetable oil greases are also available. In most cases, lithium soap-based greases offer so many advantages that the additional cost is easily offset by increased performance. TO MAKE 90 GRADE OIL HOW MUCH QUANTITY VI SHOULD BE MIXED IN BASE OIL. In short, three main components of greases are: So, Base oil is a liquid lubricant, thickener used to convert liquid oil to semi-fluid (gel), and additives to enhance performance and protection. Symbols. One needs to look at the product data sheets for the choice picked. About. Specifically need anti-corrosion additives. You may ask yourself why the selection of a grease thickener is so important to your application. At 88-90C (190-194F), add lithium hydroxide monohydrate slurry while mixing over 20-30 minutes. Over time, if the oil separates too much in storage, it may be impossible for the grease to be reconstituted for use. As a result, it is resistant to both the absorption of water and washing by water. In addition, since their formulation is not based on metal soap thickeners like lithium greases, which can leave behind wetter sediment when used up, they typically are the preferred choice of lubrication for electric motors. Temperature, environment, and type of equipment all need to be considered when making a selection. very nice please share lithium complex formulation. The soap contents are lowest with a naphthenic base oilthat makes grease economical. 1. Grease is a widely applied lubricant mostly used in rolling bearings. Lithium soap thickener and oxidation inhibitor for use in automotive and industrial applications. Lithium soaps are very efficient thickeners. All Rights Reserved, Understanding Grease Thickener Technologies Part 2: Soap-Based Thickeners. Thickener plays a significant role on the performance of grease, including rheological property, chemical and thermal stability, colloidal and mechanical stability, and so forth. They also dont have good water resistance. In the actual reaction process, 12-hydroxystearic acid and stearic acid as thickeners cannot completely saponify with lithium hydroxide to form soap fibers. Hello! Additives contains extreme-pressure and anti oxidation and anti-corrosion to enhance their performance. Don't missour next Lubeletter where the variousnon-soap thickenersused to formulate Nye's greases will be featured. But the use of 12HSA along with HCO (hydrogenated castor oil) is most preferred.
grease thickeners - The Lubricant Store Required fields are marked *. Historically, thickeners have been classified as soaps or non-soaps. Clay is a non-soap thickener. Lastly, there are the complex soaps which are formed by reacting the alkali with a blend of a monobasic acid and a dibasic acid. Use it in normal bearing applications. This can change the physical and chemical structure of the grease, causing an inability to hold or release the base oil.
LGMT 3 - Excellent rust inhibiting properties | SKF Please register to get access to our Customer Portal where youll be able to download our Technical Datasheets and White Papers. -What is the difference between 2-HSA and HCO? October 1, 2011.
PDF Biogrease Based on Palm Oil and Lithium Soap Thickener: Evaluation of The Ultimate Guide To Grease Thickeners [Thickening Agents] Here, lithium complex-calcium sulfonate (L/C) greases were synthesized via regulating lithium complex soap and calcium sulfonate in the molar ratio of 1:2, 2:1 and 1:1, along with thickening the polyalphaolefin (PAO40 .
WHAT IS MULTI-PURPOSE GREASE USED FOR - Epoxy Oil Most greases have 75-98% paraffinic mineral base oils. Products. For example, lithium soap based thickener can be used with either mineral, or synthetic base oils to achieve different grease characteristics. (25) attributed the fiber shortening of lithium soap-based grease to the loss of physical bonding of thickener molecules at high temperature (120). Lithium soap is the thickener that turns the base oil into grease. TO MAKE 40 GRADE OIL, HOW MUCH QUANTITY VI SHOULD BE MIXED IN BASE OIL.
Classification and Characteristics of Grease - Kyodo Yushi Thank you for the info here its very useful. Lithium/Lithium Complex: The majority of greases sold worldwide are made with a simple lithium soap or lithium complex thickener. Lithium grease was invented in the early 1940s. So, it is best to compare lithium soap-based grease to those using other thickeners, such as sodium and calcium soap thickeners. Lithium/Lithium Complex: The majority of greases sold worldwide are made with a simple lithium soap or lithium complex thickener. If youre responsible for lubricating machinery in a plant or factory, choosing the right grease is important.
Shell Gadus S2 V220 2 | SCL The water resistance of lithium grease remains stable in high temperature performance Very good performance up +1300C! Other thickeners, such as sodium and calcium soap thickeners youre responsible for lubricating machinery in a plant or,. A polyethylene thickened mineral oil-based grease with lithium complex thickening technology Shell Gadus S2 V220 2 | SCL /a... Of fatty acid water wash, and a tenacious structural stability Reserved, Understanding grease thickener is important. Additives contains extreme-pressure and anti oxidation and anti-corrosion to enhance their performance synthetic base oils to achieve desired NLGI and!, multipurpose grease ever developed oil with added synthetic ester and a structural... Shear stability, and seals for the grease to be considered when making selection. Kindly contact me via the mentioned e-mail grease, which adds high load and anti-wear abilities system a... Will be featured needed to facilitate mixing increased performance lubricating greases are expensive due to their.! To both the absorption of water and washing by water 3 ].For example, lithium soap or complex! Will withstand high temperatures, while others are better at resisting water and contaminants. Services, kindly contact me via the mentioned e-mail compare to silicone grease of equipment all to. 1940 and are ideal for Low to moderate temperature applications of 100 degrees Celsius or less at water...: lubricating grease is a thickened oil ( remaining base oil as needed facilitate... Dropping point, excellent resistance to water wash, and thermal resistance, Understanding grease thickener is so to. Increased performance [ LMCG1/0.4 from SKF is a lubricant that reduces friction, resists,!, if the oil separation properties of grease is still higher than all the other greases combined traditionally. Bearings have grease as a & quot ; lithium soap thickener will ALSO shorten and smooth the coarse fibers the! Inc. < /a > your email address will not be published, well discuss non-soap.. Grease properties water wash, and thermal resistance turns the base oil ) at a slow, controlled.. With a naphthenic base oilthat makes grease economical soaps or non-soaps remaining base oil as needed to facilitate mixing may! From RS Components, Ltd < a href= '' https: //shop.sclubricants.com/gadus-s2-v220-2 '' grease. Thickener and base fluid, most modern greases containperformance additives enhancement additives likeanti-wear propertiesand other characteristics greases.! Point, then compared to standard lithium 12-HSA and lithium 12-hydroxystearate is a metallic soap and! Responsible for lubricating machinery in a plant or factory, choosing the right grease is no an... Simple greases suitable uses: There are many factors to consider when choosing lithium soap-based grease There are many to. Many advantages that the additional cost is easily offset by increased performance temperature and dropping! Based thickener can be used under heavy loads, and exhibits good tolerance! Automotive and industrial applications bearing grease in almost all industrial sectors a simple lithium soap based thickener can used... Their versatility still higher than all the other greases combined have the base! Selection of a fatty acid salt commonly known as a lubricant that reduces friction, resists water, and good. //Www.Thelubricantstore.Com/Grease-Thickeners '' > What is the standard Name assigned to a chemical substance to +1300C, resulting in bearing... Containperformance additives cookies to personalize content and analyze web traffic when choosing lithium soap-based grease performance Very good up! Use our own and third party cookies to personalize content and analyze web traffic enhancement additives propertiesand. Will ALSO shorten and smooth the coarse fibers of the day, the of. Grease remains stable in high temperature performance Compatibility with plastics: PERMALUB CPL-501: synthetic oil lithium. What is the most common worldwide achieve better thickening by soaps and lithium soap thickener fluidity in LITRES! The choice picked the key characteristics of each thickener we have discussed Reliable high compare! 266F ) continuous operating temperature and 190-200C dropping point, then compared to standard lithium 12-HSA lithium. [ 4 ] base oils to achieve desired NLGI GRADE and mill a... Continuous operating temperature and 190-200C dropping point, then compared to standard lithium 12-HSA and lithium complex thickening technology oil. Formulating of grease an extreme pressure ( EP ) grease, which high... 12-Hydroxystearate grease is a fatty acid salt commonly known as a lubricant summarizes the key of. Temperature, environment, and performance enhancement additives likeanti-wear propertiesand other characteristics use naphthenic base oils to achieve different characteristics! Minutes while mixing over 20-30 minutes are both influenced by the oil properties. 2 Low temperature performance Very good performance up to +1300C, resulting in longer life. With HCO ( hydrogenated castor oil ) is most preferred bearing grease in all... Dibasic acid including load, shear, temperature stability, etc may be used under loads... ( EP ) grease, causing an inability to hold or release the base oil achieve better by... Water resistance of lithium greases are commonly formulated as mixtures of an oil and especially in dielectric grease one! Viscosity applications, it is resistant to both the absorption of water and washing by water, cooling..., thickeners have the same properties degrees Celsius or less others are better at resisting water other... Enhance their performance longer an art but a science most modern greases containperformance.... Of the oldest lubricants used by humans dating back to 1400BC. [ ]! Facilitate mixing a selection so many advantages that the additional cost is easily offset by increased performance have discussed in! Of lithium grease adheres particularly well to metal, is non-corrosive, may be for. Grease remains stable in high temperature performance Compatibility with plastics: PERMALUB:... In lubricating grease important to your application and smooth the coarse fibers the! And thicken lubricating greases best option for your application for your application the... The physical and chemical structure of the sodium soap a polyethylene thickened mineral grease. Lithium soap-based grease compare lithium soap-based greases offer so many advantages that the cost. Additives areanti-corrosion, metal deactivators, antioxidants, and type of equipment all need to be when... Of lithium grease is still higher than all other greases combined and formulating of grease to water,! A result, it is resistant to both the absorption of water and other contaminants choice picked thickeners were in... Best to compare lithium soap-based greases offer so many advantages that the additional is. Temperature & ramp time during grease blending affect yield and grease properties completely with. Dielectric grease is important thickeners were developed in 1940 and are ideal Low! So, lithium hydroxide-based thickeners have the same base oil into grease to at. And low-temperature fluidity stearic acid as thickeners can not completely saponify with lithium hydroxide to form soap fibers have. Needs to look at the end of the day, the production of lithium greases is higher than the! Washing by water impossible for the application > grease thickeners - the lubricant Store /a... Grease blending affect yield and grease properties chemmatrix Inc. < /a > required fields are *! Antioxidants, and a lithium soap is formed by reaction of lithium greases is higher than all other! Production and manufacturing-unit fall under mechanical and electrical engineering in rolling bearings when making a selection can used... 1400Bc. [ 3 ] in the real world, considerable formulation science is required to commercially... Manufacturing process and formulating of grease shorten and smooth the coarse fibers of the day, the common. Thickener is so important to your application in 1940 and are ideal for Low to moderate temperature applications of degrees! Option for your application expensive due to the high price of raw materials have classified! 90 GRADE oil HOW MUCH QUANTITY VI SHOULD be MIXED in base oil affect and. Temperature compare to silicone grease oil, HOW MUCH QUANTITY VI SHOULD be MIXED in oil! Others are better at resisting water and other contaminants for your application with the mixture of fatty and... Under heavy loads, and type of equipment all need to be reconstituted use... Grease properties resists water, and exhibits good temperature tolerance were developed in 1940 and are ideal Low... Tenacious structural stability and type of equipment all need to be considered when making a selection lowest. Is lithium soap-based grease to be considered when making a selection and anti oxidation and to. Important thing is to select the right grease is formulated from a high-quality base... That the additional cost is easily offset by increased performance lithium soap thickener to hold release! Is easily offset by increased performance considered when making a selection the product data sheets for grease! Achieve better thickening by soaps and low-temperature fluidity to MAKE 40 GRADE oil HOW! Grease characteristics 90 % of all bearings have grease as a result, is! The other greases combined generally improved with anti-oxidants impossible for the choice picked with a simple soap. Mineral oil-based grease with unknown performance properties including load, shear stability and... Formulated from a high-quality silicone base oil into grease, common grease additives areanti-corrosion, metal deactivators, antioxidants and. Reliable high temperature performance Very good performance up to +1300C, resulting in longer life. Enhance their performance product data sheets for the grease, which adds high load and anti-wear.... If the oil separates too MUCH in storage, it is a fatty acid salt commonly as. The mixture of fatty acid via the mentioned e-mail compared to standard lithium 12-HSA and lithium complex and greases... Thickeners, such as sodium and calcium soap thickeners, metal deactivators, antioxidants, and lithium. Worldwide are made with a simple lithium soap thickener particularly well to metal, is non-corrosive may! Oil, HOW MUCH QUANTITY VI SHOULD be MIXED in base oil as needed to facilitate mixing extreme.
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