Antirust oil, also known as antirust grease, is an oil made up of various oils and fats. These oil are added with oil-solublecorrosion inhibitors and other additives. It contains an oil-soluble, base oil, as well as other additives. This article lists the principal chemical additives that are found in rust-preventive oils.
1. Preparation for antirust material–alluminium bis-stearate
You may also know aluminum stearate as brushed or glass butter. It can be a white powder at room temp. or solid particles. According to how much aluminum salt is present, the amounts of aluminum monostearate stearate and aluminum tristearate were obtained in the manufacturing process. Aluminum bisstearate offers the greatest resistance to rust. A mixture of three aluminum salts, and a tiny amount of aluminum oleate soya oil makes up the industrial product aluminumstearate. Aluminum stearate exhibits excellent resistance against damp heat, salt spray, as well as atmospheric resistance. While it can be used to antirust ferrous metals copper and aluminum, the water film, sweat displacement capability and saltwater impregnation capabilities are very poor. It can be used to make grease antirust oil that is good for measuring the antirust properties of cutting instruments and measuring equipment.
2. Antirust oil contains antioxidants
Free radical chain reaction occurs when rust preventive oils are stored and used. It is caused by the interaction of light, heat and metal. When this happens, the oil will precipitate or gel in order to deteriorate. It is common to stop or slow down this process. Anti-rust oils oxidative degradion additive-antioxidant. Commonly used as antirust oils, phenols or amines.
1. 2,6-di-tert-butyl-p-cresol: it is an alkylation reaction of isobutylene and p-cresol under the catalysis of concentrated sulfuric acid, and then refined by neutralization. It acts as a termination of free radicals. T501 codenamed, or 264. It has a clear or yellowish color at room temperature.
2. Diphenylamine: A free radical terminator, it is produced by condensation reaction of aniline, under the catalysis anhydrous trichloride. Following this, salting-out, neutralizations, distillation and crystallization take place. At room temperature it’s colorless to medium gray crystal, volatile, aromatic and grayish black after exposure. It is easily soluble with mineral oil, alcohol, ethers, benzene, glacial Acetic Acid, and carbon dioxide.
3. Butyl octyl thiophosphate – It’s made from isooctyl alcohol, nebutanol phosphorus pentoxide & zinc oxide. As a diluent it uses 150 SN neutr oil. It is made by vacuum drying and filtration. The T202 code is peroxidation reducing agent that has both anti-corrosion and wear properties. It can be used as an oxidation inhibitor at higher temperatures. The average oil usage is 0.5% p>
3. Antirust Oil – Auxiliary Materials
Special additives may sometimes be added to an antirust oil in order that it meets the needs of various antirust objects. 1. Antirust oil or lubricated nonrust grease: The machine uses Defoamer. As the engine runs, air is swirled around in the oil. Defoamer molecules can rapidly enter the interface between the oil and the bubble. They destroy the mechanical balance of this liquid film. The foam is then destroyed or suppressed. One common defoamer that is used frequently is methyl silicon oil. 2. Extreme pressure additive: To use antirust oils equipment, metal surfaces that come in contact with each other occasionally generate high pressure. Additionally, friction heat can be generated, which damages the oil layer between the metals. Worn, or sintered. In these conditions, extreme pressure agents can form chemical reaction films with lower melting points and smaller shear strengths. They are able to reduce friction and protect the metal surface from scratching and sintering. Some high molecular substances and compounds that contain boron are common examples of extreme pressure agents. 3. One class of chemicals called a cosolvent. They can make certain additives more soluble and keep them stable within the rust preventive oils system. These cosolvents can be used to increase the solubility of certain additives, such as dibutylphthalate, dioctylphthalate, or ethanol.
4. In the zinc naphthenate antirust treatment, an antirust agents is commonly used
An antirust agent used widely in antirust oil is zinc naphthenate. It is a byproduct sodium naphthenate which can be obtained through crude oil processing. It has a viscous, brownish brown color at room temperature. Zinc naphthenate has an affinity for mineral oil, and a solubility reaction on certain potent potential polaritycorrosive inhibitors. The iron metal exhibits an anti-moisture quality. Although the ferrous metal can neutralize sweat and replace it with sweat, its antirust properties on copper, silver, and bronze are significant. But the anti-overlap property and salt spray resistance are weak. Combine with petroleum sulfurate or bismuthonaphthalenesulfonate to increase antirust protection for cast iron. The base oil’s acid value can be raised by the addition of zinc naphthenate. An acid level of 1% can be raised to 1.0 -1.2 mgKOH/g. In this case, mineral oil is more accelerated and will react faster when heated. For short-term rust prevention, it can be used as an oil in nonferrous metal or ferrous metal processing. The oil contains a high amount of zinc naphthenate to prevent prolonged heating and avoid oxidation.
5. Preparation and use of decyl-succinic acid as a rust prevention oil
A common method of making antirust oils is dodecyl-succinic, which falls under the category of an alkenyl-succinic acid corrosion inhibitent. At room temperatures, it’s a viscous brownish yellow or brownish red transparent liquid. It isn’t steam turbine oil. Dodecylsuccinic Acid is extremely soluble with mineral oil. Two carboxyl groups are found at the end of each molecule. Because they have two different ends, the acid can be strong enough to adhere to the surface quickly, and create an active layer protecting against rust. For a good anti-rust result, a small quantity of dodecenylsuccinic Acid can be added. The amount found in antirust oil is approximately 1%. Dodecenylsuccinic has the characteristic of not emulsifying in water. Therefore, it can be used for dehydration and antirust oils. Dodecyl-succinic is very resistant to the rust of black metal, copper and aluminiu. You should limit the dosage due to its high level of acid. You can use it in combination with other rust preventive oils such as dodecyl-succinic acid, strontium petrol sulfonate. Hydrazine dinonylnaphthalene.sulfonate.alkenylimidazoline.
6. Preparation and use of metal soaps, including carboxylic acids, in the preparation of rust-preventive oils
These oils can be used to make rust prevention oil carboxylic and its metal corrosion inhibitor. The oil-soluble oil corrosion inhibitor carboxylic acid has good antiemulsification and can be used in the formulation of oils that have high turbine oil lamp demulsibility. For storage of antirust and dehydration oil, dilute succinic is most widely used. It can also be mixed with more sulfonate and other corrosion inhibitors. However, acid soap corrosion inhibitor rust inhibit is stronger than its equivalent acid. The oil’s solubility however is low. These soaps, dicarboxylic Acid and carboxylic Acid, are too polar in nature to be soluble with fats. This acid soap corrosion inhibitor can be used to store and prepare antirust oil.
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