| abstract |
The invention discloses a heat-conducting aramid nano-insulating paper and a preparation method thereof. Aramid nano-fibers with high strength, high modulus, high aspect ratio, temperature resistance and insulation are used as a matrix to endow aramid nano-insulation Paper has excellent mechanical properties, insulation properties, temperature resistance and flexibility; hydroxylated nano-boron nitride is used as a thermally conductive filler dispersed in the aramid nanofiber matrix as the main carrier of heat conduction, and interface bonding is optimized to reduce interface thermal resistance, endowing it with High thermal conductivity without affecting the insulation performance of aramid nano-insulation paper. The invention solves the current problems of heat dissipation and service life of electrical insulation equipment due to the low thermal conductivity of the aramid insulating paper; at the same time, it avoids the problems of hard and brittle insulating paper and complex technology caused by the impregnation process of the thermal conductive composite resin. |