Thermoanalytical investigations on heterocyclic organic compounds. Part III. The effect of introducing a ring nitrogen atom on the function of 1-naphthol as antioxidant. A differential scanning calorimetric study

SynopsisThermal degradation of polyethylene-polypropylene-based lubricating grease was studied in a differential scanning calorimeter under static air atmosphere, while weight loss with increase in temperature under inert atmosphere of nitrogen gas was recorded thermogravimetrically. The polymer-based grease exhibited higher thermal stability when compared to that of a soapderived multipurpose lubricating grease based on lithium 12-hydroxystearate.

show abstract

Study of thermal stabilities of some heat transfer oils

Al-Sammerrai¹

1985

Journal of Thermal Analysis

View full text Add to dashboard Cite

This paper discusses the thermal behaviour and stabilities of some heat transfer fluids. These included four solvent-refined mineral oils, two aromatic extracts and two synthetic oils. Results of this thermoanalytical investigation, which simulated different atmospheric conditions, showed the synthetic oils to have higher thermal stabilities than those of the other oils.The refined mineral oils exhibited higher thermal stabilities than those of the aromatic extracts when studied under a static air atmosphere. This behaviour was reversed when the experiment was performed under a confined atmosphere of air.These observations are attributed mainly to the environmental changes and also to the compositions of these products.The transfer of heat in open and closed systems plays an important part in many manufacturing processes. Typical operations include petroleum refining, chemical synthesis, plywood lamination, plastic production, etc.Many organic heat transfer oils have been developed and exhibit good heat transfer at elevated temperatures, typically in the 150-300 ~ range. The most common and economical of these organic oils are the petroleum-derived hydrocarbon oils, although synthetic and chlorinated oils too are often used [1].A heat transfer fluid should be non-corrosive to metals, it should be liquid over a wide temperature range and in general it should have a low vapour pressure. Such a fluid should be applicable as a heat transfer medium over an extended period of time at a given temperature, and should exhibit a high thermal stability. Thus, a heat transfer fluid is often required to operate at temperatures of the order of 250 ~ or higher over long periods [1].

show abstract

Thermoanalytical investigations on heterocyclic organic compounds. Part III. The effect of introducing a ring nitrogen atom on the function of 1-naphthol as antioxidant. A differential scanning calorimetric study

Cited by 11 publications

References 2 publications

Isoquinolinols and Their Hydrogenated Derivatives

Isoquinolinols and Their Hydrogenated Derivatives

Investigation of thermal degradation of polyethylene–polypropylene‐based grease

Study of thermal stabilities of some heat transfer oils

Contact Info

Product

Resources

About