Preparation method of high-performance heat-conducting plastic composite material

A technology of thermally conductive plastics and composite materials, used in heat exchange materials, chemical instruments and methods, etc., can solve the problems of narrow application area and poor thermal conductivity, achieve large heat source and power consumption, improve thermal conductivity and good fluidity. Effect

Pending Publication Date: 2021-05-14
浙江南塑合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to propose a method for preparing a high-performance thermally conductive plastic composite material, aiming to solve the problems of poor thermal conductivity and narrow application range of plastic materials currently on the market

Method used

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  • Preparation method of high-performance heat-conducting plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 48 parts of modified phenolic resin, 5 parts of urotropine, and 30 parts of wood flour fiber into a high-speed mixer, and mix them with high-speed stirring to obtain E mixture; add the coupling agent to anhydrous ethanol solvent to prepare the coupling agent solution, add 3 parts of silicon carbide and 1.5 parts of graphite to the coupling agent solution, stir evenly, filter with suction, and dry to obtain F mixture; mix E mixture, F mixture, 8 parts of magnesium oxide, 1.5 parts of stearic acid, talc 1 part of powder, 0.5 parts of plasticizer, 1.5 parts of coloring matter, mixed uniformly according to a certain mass ratio, masticated under certain conditions through a twin-screw machine, extruded and granulated, and can be molded at 180 ° C. Name it PF-NS321.

Embodiment 2

[0026] Add 40 parts of modified phenolic resin, 5 parts of urotropine, and 30 parts of wood flour fiber into a high-speed mixer, and mix them with high-speed stirring to obtain E mixture; add the coupling agent to anhydrous ethanol solvent to prepare the coupling agent solution, add 3 parts of silicon carbide and 1 part of graphite to the coupling agent solution, stir evenly, filter with suction, and dry to obtain F mixture; mix E mixture, F mixture, 8 parts of magnesium oxide, 8 parts of calcium oxide, stearin 2 parts of acid, 1 part of talcum powder, 0.5 parts of plasticizer, 1.5 parts of coloring material, mixed uniformly according to a certain mass ratio, plasticized under certain conditions through a twin-screw machine, extruded and granulated, and can be granulated at 185 ° C The lower molded, named it PF-NS322.

[0027] Table 1 is a performance comparison table of radiators made of different materials. Table 2 is a comparison table of the technical parameters of the hi...

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Abstract

The invention discloses a preparation method of a high-performance heat-conducting plastic composite material, which comprises the following steps: adding modified phenolic resin, urotropine and wood flour fiber into a high-speed mixer, and stirring and mixing at a high speed to obtain a mixture E; adding a coupling agent into an absolute ethyl alcohol solvent to prepare a coupling agent solution, adding a heat-conducting additive A and a heat-conducting additive B into the coupling agent solution, uniformly stirring, carrying out suction filtration, and drying to obtain a mixture F; and uniformly mixing the mixture E, the mixture F, magnesium oxide, calcium oxide, nano calcium carbonate, talcum powder, stearic acid and a plasticizer according to a certain mass ratio, after the mixed materials are completely molten through a double-screw machine, plastifying, extruding, pulling and granulating under a certain condition, and then packaging. The product can be molded at 185 DEG C to form a required sample piece. The preparation process is simple and has a large-scale preparation prospect, and the prepared high-performance thermal conductive plastic is non-toxic and harmless and has good stability, insulativity, mechanical property and oxidation resistance. The material is not easy to deform at a high temperature, is not easy to cause a brittle phenomenon at a low temperature, is easy for injection molding, and is low in shrinkage rate and long in service life; and in the preparation process, the heat-conducting additive is well compatible with the main plastic, and the prepared high-performance plastic has good heat-conducting property.

Description

technical field [0001] The invention belongs to the technical field of preparation of new heat-conducting materials, and in particular relates to a method for preparing a high-performance heat-conducting plastic composite material. Background technique [0002] The molding compound with ordinary phenolic resin as the main raw material has excellent insulation properties and good mechanical properties, its own natural flame retardant properties, and has low density, wear resistance, oil resistance, solvent resistance, non-toxic and pollution-free, and corrosion resistance. It is the main raw material of traditional electrical components, but its high temperature resistance is relatively unsatisfactory. After directional modification of phenolic resin and adding suitable fillers, it completely changes the application range of phenolic film plastics. Materials add new vibrancy. [0003] There are many studies and applications of thermally conductive plastics, which can be simp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/14C08L97/02C08K13/06C08K9/06C08K9/04C08K3/04C08K3/34C09K5/14
CPCC08L61/14C09K5/14C08L2203/20
Inventor 陈央平陈永生牟小卫
Owner 浙江南塑合成材料有限公司
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