Highly heat-conducting insulation engineering plastic and preparation method thereof

Abstract

The invention discloses highly heat-conducting insulation engineering plastic, which consists of the following components in part by weight: 100 parts of plastic substrate, 100 to 900 parts of heat-conducting filler, 1 to 45 parts of compatibilizer, 1 to 90 parts of toughening agent, 1 to 45 parts of reinforcing agent, 1 to 36 parts of lubricating agent and 0.3 to 5.4 parts of antioxidant. The invention also discloses a preparation method of the engineering plastic, which comprises the following steps of: drying the plastic substrate and the heat-conducting filler in a 60 to 100 DEG C air dry oven for 4 to 8 hours; putting the components into a high-speed mixer and mixing for 3 to 5 minutes; performing internal mixing on the mixture in an internal mixer for 10 to 30 minutes; and uniformly grinding the mixture in a grinder, transferring to a charging hopper of a double-screw extruder, feeding fiber fillers through a fiber inlet of the double-screw extruder, melting, mixing, extruding, cooling, drying, and pelletizing. The prepared material has high heat-conducting property and mechanical property, and is easily subjected to injection molding.

Description

technical field [0001] The invention belongs to the field of functional macromolecules, and in particular relates to an injection-molded high thermal conductivity insulating engineering plastic used for heat transfer and heat dissipation. Background technique [0002] Traditional heat-conducting materials are mostly metal materials with good thermal conductivity, but metal materials are difficult to meet the application requirements under some special conditions due to their poor corrosion resistance and difficult processing. Due to the excellent corrosion resistance and mechanical properties of polymer materials, it is very important to use polymers as thermal conductive substrates to replace traditional metal materials in some fields that have high requirements for thermal conductivity of materials. General polymer materials Thermal conductivity is poor, so it is necessary to improve the thermal conductivity of polymer materials. [0003] In the prior art, thermally condu...

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Problems solved by technology

[0002] Traditional thermal conductive materials are mostly metal materials with good thermal conductivity, but due to poor corrosion resistance and difficult processing of metal materials, it is difficult to meet the application requirements under some special conditions

Due to the excellent corrosion resistance and mechanical properties of polymer materials, it is very important to use polymers as thermal conductive substrates to replace traditional metal materials in some fields that have high requirements for thermal conductivity of materials. General polymer materials The thermal conductivity is very poor, so it is necessary to improve the thermal conductivity of polymer materials

[0003] In the prior art, thermally conductive polymer materials are generally prepared by highly filling thermally conductive fillers in the presence of silane coupling agents. The thermal conductivity of the prepared thermally conductive materials is low, and the mechanical properties of the materials are seriously reduced due to the addition of a large amount of fillers.