Antirust oil, also known as antirust grease, is an oil made from oil-soluble and vegetable fats. It contains an oil-soluble, base oil, as well as other additives. This article explains 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. Aluminum stearate, which is usually referred to as glass butter or brushed butter, can be obtained at roomtemperature in the form of a white powder, solid particles, and insoluble in water. According to how much aluminum salt is present, the amounts of aluminum monostearate stearate, aluminum triarate, or aluminum tristearate were obtained in the manufacturing process. Aluminium bisstearate offers the greatest resistance to rust. A mixture of three aluminum salts, and a tiny amount of aluminum oil is what makes up aluminum stearate. Aluminum stearate exhibits excellent resistance against damp heat, salt spray and atmospheric resistance. While it can be used to antirust ferrous metals copper and aluminum, the water film and sweat displacement abilities, as well as saltwater impregnation capability, are very poor. It is used for making grease-type antirust oils, which are suitable to measure and prevent the rust of cutting instruments and measuring tools.
2. Antirust oil has antioxidants
Free radical chain reaction occurs when rust preventive oils are stored and used. It is caused by the interaction of light, heat, metal and heat. When this happens, the oil will precipitate or gel in order to cause it 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 made from aniline’s condensation under the anhydrous aluminum trichloride catalyst, followed by neutralization, salting and crystallization. It has a grayish-black color at room temperatures. It is easily soluble with mineral oil, alcohol, ethers, benzene, glacial Acetic Acid, and carbon dioxide.
3. Butyl octyl thiophosphate consists of isooctyl alcohol, nbutanol, phosphorus peroxide and zinc dioxide. As a diluent it uses 150 SN Neu oil, which is used for sulfur phosphating and the saponification process. It is made by vacuum dewatering. The peroxidation reducing agent code T202 has both anti-wearing properties and anti-corrosion. It can be used as an oxidation inhibitor at higher temperatures. The normal usage of the oil is in the amount of 0.5 p>
3. Antirust Oil – Auxiliary Materials
Some antirust oils may contain special additives to help meet specific antirust object requirements. 1. Defoamer is used for equipment that uses antirust oil or grease. When the machine is turned on, the air layer is shaken to make contact with the oils. A small amount of the bubbles formed in the oil are then difficult to remove. Defoamer molecules can rapidly enter the interface between the bubbles and the oil. They destroy the mechanical balance of this interface liquid film. The goal is to either eliminate or suppress the foam. 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 lower shear strengths. They are able to reduce frictional resistance as well as prevent the metal from scratching and sintering. Most commonly used extreme pressure agent are compounds that contain boron and sulfur phosphorous compounds. 3. One class of chemicals called a cosolvent. They can make certain additives more soluble and more stable in rust preventive oils. These cosolvents can be used to increase the solubility of certain additives, such as dibutyl Phthalate, dioctyl Phthalate, ethanol, or butanol.
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 by-product sodium naphthalate which can be obtained through crude oil processing. At room temperatures, it’s a liquid that is viscous and brownish. Zinc acid is water-soluble and can dissolve in mineral oil. The iron metal exhibits an anti-moisture quality. Although the ferrous metal can neutralize and replace sweat, it has a weak anti-overlap effect, reduced antirust activity, and a significant antirust effect on copper. Combine with bismuthonaphthalene and petroleum sulfurate to increase antirust properties of cast iron. Zinc naphthenate improves the acid value of the base oils. An acid level of 1% can be increased by increasing the pH value to 1.0-1.2 mgKOH/g. Also, the mineral oil’s oxidation rate is quicker when the oil is heated. For short-term rust prevention, it can be used as an oil in ferrous, nonferrous, or industrial processes. 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 preventive oil
A common method of making antirust oils is dodecyl-succinic, which falls under the category of an alkenylsuccinic acid corrosion inhibitor. It is transparent, viscous and translucent at roomtemperature. It does not contain 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 antirust 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. Dodecylsuccinic is excellent at resisting rust to black metal, silver, and aluminiu. You should limit the dosage due to its high level of acid. You can use it in combination with dodecyl sucinic acid, strontium petroleum oil, hydrazine DINYLNAPHENE sulfonate. Alkenyl imidazoline and the like.
6. Preparation and use of the metal soaps in common rust preventive oil preparations
These oils can be used to make rust prevention oil carboxylic and its metal corrosion inhibitor. Carboxylic acid is an oil-soluble and effective corrosion inhibitor. It can also be used in the formulation of oils that are highly flammable to turbine oil lamps. For storage of antirust and dehydration oil, dilute succinic is most widely used. It can also be mixed with more sulfonate-corrosion inhibitors. However, acid soap corrosion inhibitor will rust more than the other acid. The oil can be dissolved in it easily. These soaps, dicarboxylic Acid and carboxylic Acid, are toopolar to be soluble with fats. This acid soap corrosion inhibitor can be used to store and prepare antirust oil.
Cataniadagiocare advancedmaterial Tech Co., Ltd., (Cataniadagiocare), has over 12+ years experience in the development of chemical products. For high-quality Stearic Acid Series please contact us.
Inquiry us
