Heat-conducting plastic master batch, preparation method thereof and heat-conducting plastic

Abstract

The invention provides a heat-conducting plastic master batch, a preparation method thereof and heat-conducting plastic. The heat-conducting plastic master batch comprises resin, graphene, carbon nanotubes and a micron-sized inorganic heat-conducting filler. Thus, the nanoscale graphene and carbon nanotubes and the micron-sized inorganic heat-conducting filler complement each other in geometric dimensions and dimensions, the accordingly generated synergistic effect not only can significantly improve the heat-conducting performance of the heat-conducting plastic master batch, but also ensures the uniform dispersion of the graphene, carbon nanotubes and inorganic heat-conducting filler in the resin to obtain the heat-conducting plastic master batch with high filling density and uniformity; the mixing method can increase the filling ratio of the graphene, obtain the concentrated master batch of a network structure (heat-conducting network) formed by the graphene, the carbon nanotubes andthe inorganic heat-conducting filler in the resin, and the good construction of the heat-conducting network structure can significantly improve the heat-conducting performance of the heat-conducting plastic master batch and also improve the mechanical strength and impact toughness of the heat-conducting plastic master batch.

Description

technical field [0001] The invention relates to the technical field of heat-conducting plastics, in particular to a heat-conducting plastic masterbatch, a preparation method thereof, and a heat-conducting plastic. Background technique [0002] Graphene has become one of the research hotspots in the field of materials science due to its unique two-dimensional structure and excellent thermal, mechanical and electrical properties. Graphene has a perfect two-dimensional crystal structure, and its lattice is composed of six carbons. The hexagon surrounded by atoms is a new type of material that is the thinnest, the strongest, and the most conductive and thermally conductive material found so far. The thermal conductivity of graphene is as high as 5300W / m·K, which is much higher than that of ordinary metal materials. Its excellent mechanical strength and high surface activity have shown good application prospects in the field of heat conduction / heat dissipation materials. [0003...

AI Technical Summary

Problems solved by technology

At present, in order to better improve the thermal conductivity of thermally conductive plastics, graphene can be added to thermally conductive plastics. However, because the physical shape of graphene is very small, its thickness is on the nanometer scale, and the sheet diameter is usually on the micron scale, so graphite The bulk density of graphene is very small, and it is easy to generate dust pollution during transportation and use, which poses a great life, health and safety hazard to the human body. Difficult, the extrusion process is difficult to unload, so it is difficult to realize industrial production

[0004] Therefore, the research on thermally conductive plastics needs to be deepened.

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