【Daily Question】12.4 Short-answer question: What is the antioxidant stability of oils?
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This post was last edited by Guan Gongyu on 2015-12-13 20:23: “Fill-in-the-blank question: What is the antioxidant stability of oils?” Brief: Correct answer = +5 points. Promotion: Registration for the 【Petroleum Chemical Events】’My Most Crazy Event’; Registration for the 【Petroleum and Chemicals Section】’Show Off Your SimSun Font’ event @Guan Gongyu
In most cases, lubricating oils come into contact with air and are exposed to high ambient temperatures; as a result, their components inevitably undergo chemical reactions with the oxygen in the air, forming oxidation products that contain oxygen. It poses a series of hazards to the performance of oils and the use of machinery. To reduce the effects of lubricant oxidation, the measures currently taken include removing unstable components through refining during production; the most commonly used method is the addition of antioxidant additives and detergents to the oil. Antioxidants are added to prevent and delay the oxidative degradation of oils; cleaning and dispersing agents are used to remove substances resulting from oxidation and degradation, such as carbon deposits and sludge, from mechanical components, thereby reducing their impact on the operation of these machines.
The antioxidant stability of oils refers to their ability to resist permanent changes in their properties caused by the action of air (or oxygen).
What is the antioxidant stability of oils? It refers to the ability to resist permanent changes in their properties caused by the action of air (or oxygen)
What is the antioxidant stability of oils? Antioxidant stability: refers to the ability to resist permanent changes in its properties caused by the action of air (or oxygen).
It refers to the ability to resist permanent changes in its properties caused by the action of air (or oxygen).
It refers to the ability to resist permanent changes in its properties caused by the action of air (or oxygen).
The antioxidant stability of oils refers to their ability to resist permanent changes in their properties caused by the action of air (or oxygen).
What is the antioxidant stability of oils? The antioxidant stability of lubricating oil is an important property that reflects its tendency to oxidize, deteriorate, and age during actual use, storage, and transportation. The oxidation of oils results in a darkening of their color, an increase in viscosity, an increase in acidic substances, and the formation of precipitates. These will have a series of adverse effects on the use of oil products, such as corroding metals and blocking oil passages. Therefore, this parameter is one of the quality indicators that must be controlled for oil products. The worse the antioxidant stability of the oil, the higher the operating temperature of the oil, and under conditions of contact with metal catalysts, the faster the oil will oxidize and deteriorate. Therefore, refrigeration compressors with higher exhaust temperatures require oils with good oxidation stability. High-quality engine oils with a high degree of refinement have better oxidation stability.