Heat transfer fluid composition with improved thermal stability
The present invention relates to a heat transfer fluid composition with improved thermal stability, and has the effect of inhibiting the oxidation of a coolant due to hydrogen vehicle stack cooling system components and operating temperature.
1 . A heat transfer fluid composition, comprising at least one solvent selected from water, alcohol, glycol, and glycol ether; anthranilamide; and a corrosion- and oxidation-resistant agent,
wherein the corrosion- and oxidation-resistant agent is contained in an amount of 0.2 to 0.5% by weight, based on the weight of the composition,
wherein the corrosion- and oxidation-resistant agent is betaine or N,O-bis(trimethylsilyl)acetamide.
2 . The heat transfer fluid composition of claim 1 , wherein the solvent comprises water and ethylene glycol.
3 . The heat transfer fluid composition of claim 2 , wherein the water is contained in an amount of 30 to 70% by weight, based on the total weight of the composition.
4 . The heat transfer fluid composition of claim 2 , wherein the ethylene glycol is contained in an amount of 30 to 70% by weight, based on the total weight of the composition.
5 . The heat transfer fluid composition of claim 1 , wherein the anthranilamide is contained in an amount of 0.001 to 5.0% by weight, based on the total weight of the composition.
6 . The heat transfer fluid composition of claim 1 , wherein the composition is a coolant composition for use in hydrogen electric vehicles.