USE OF POLYMER-INORGANIC COMPOSITIONS IN FORM OF NANOPARTICLES AS HEAT CARRIER FLUIDS IN STORAGE BATTERY OR OTHER SYSTEMS OF ELECTRICAL EQUIPMENT Russian patent published in 2024 - IPC C09K5/10 C08L33/08 C08K3/22 B82Y99/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to the use of a polymer-inorganic composition in the form of nanoparticles as a heat carrier fluid in an accumulator battery or other systems of electrical equipment, wherein the polymer-inorganic composition in form of nanoparticles is obtained by grinding a mixture, wherein the mixture contains one or more inorganic compounds in the form of nanoparticles (A) and one or more polymer compounds (B); (A) where one or more inorganic compounds in the form of nanoparticles are selected from titanium dioxide, aluminium oxide or mixtures thereof, and (B) wherein one or more polymer compounds are obtained by polymerisation of a monomer composition containing a) from 1 to 35 % by weight, based on the total weight of the monomer composition, of one or more functional monomers selected from N-(3-dimethylaminopropyl)methacrylamide, 2-dimethylaminoethylmethacrylate, oxazolidinylethyl(meth)acrylate, 3-(trimethoxysilyl) propylmethacrylate, b) from 65 to 99 % by weight of one or more alkyl(meth)acrylate monomers selected from methyl methacrylate, butyl methacrylate, lauryl methacrylate and dodecyl methacrylate, based on the total weight of the monomer composition, and wherein the weight ratio of one or more inorganic compounds in form of nanoparticles (A) to one or more polymer compounds (B) is from 9:1 to 1:5, and wherein the polymer-inorganic composition in form of nanoparticles contains a base liquid (C), which is characterized by kinematic viscosity at 40 °C from 3 cSt to 30 cSt, in accordance with ASTM D445, and flash point of more than 110 °C in accordance with ASTM D-93, and the nanoparticles are characterized by a linear size of 1 to 500 nm.

EFFECT: providing a heat carrier nanofluid which is stable over time and meets application standards, such as improved thermal characteristics, for a long period of time and at different temperatures.

11 cl, 5 tbl, 13 ex