240 / 2018-09-24 15:30:33

Thermal conductivity and adhesion strength of epoxy resin with ferrite filler

composite ferrite,ferrimagnetic filler,composition,thermal conductivity,adhesion of composite materials

The paper presents the results of the conducted studies on the thermal conductivity of the obtained materials. It can be seen that the thermal conductivity of the compositions increases with increasing temperature along lines that are close to linear. An increase in the concentration of the filler, which has a higher thermal conductivity than the polymer matrix, leads to an increase in the thermal conductivity of the composition. The results of a test for the adhesion of composite materials based on ferrites and polymers to various metal substrates are also presented. It is shown that the percentage of ferrite in the polymer coating practically did not affect the value of adhesion. The theoretical value of the adhesive strength in the "polymer-metal" system can reach 200-1200 MPa. However, the experimentally determined adhesion strength is much lower and, as a rule, does not exceed 10-40 MPa.