Application of Ferromagnetic Microwires as Temperature Sensors in Measurements of Thermal Conductivity

A method for the determination of thermal conductivity polymer composite materials by using Co-based ferromagnetic microwires is proposed. Microwire segments were integrated into samples studied during their manufacture and used as current microheaters resistance thermometers. As a representative material, we material based on nitrile butadiene rubber filled with hexagonal boron nitride after its low-temperature carbonization significant increase in conductivity. The values determined experiments varied from 1.0 W/(m·K) to 1.8 depending percentage nitride. obtained are good agreement estimates standard laser flash method.