Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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INFLUENCE OF PULSING MAFNETIC FIELD ON THERMAL CONDUCTIVITY OF DISPERSED FILLED POLIMER MATERIALS

Novikov A.P. 1 Popov V.M. 1 Lushnikova E.N. 1
1 FSBEI HPE “Voronezh State Academy of Forestry and Technologies”
The problem of production of polymer composite materials with increased thermal conductivity is examined. A method of modifying of dispersed filled polymer compositions by impact on them by pulsed magnetic field is suggested. Experimental studies have shown increase in the coefficient of thermal conductivity of epoxy composition with dispersed fillers of ferromagnetic nature when processing in pulsed magnetic field with the strength up to 24 • 104 A / m and pulse period of up to 10 Hz. The influence of nature of the filler on thermal conductivity of the samples in the cured state is defined. The resultant effect of increasing thermal conductivity of composition treated in pulsating magnetic field is due to the formation of more closely packed heat-conducting chains of filler particles. Along with the thermal conductivity, the influence of pulsed magnetic field on the mechanical properties of the treated polymers has been studied. Significant increase of microhardness of modified in a pulsating magnetic field cured filled composition is defined.