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A kind of graphene thermally conductive plastic and preparation method thereof

A heat-conducting plastic and graphene technology, applied in the field of plastic materials, can solve the problems of poor thermal conductivity of plastics, etc., and achieve the effects of easy operation, good application prospects, and simple and easy preparation methods

Active Publication Date: 2019-10-25
NINGBO MORSH NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the plastic produced by this formula has poor thermal conductivity, and its thermal conductivity is only about 2W / m·K

Method used

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  • A kind of graphene thermally conductive plastic and preparation method thereof
  • A kind of graphene thermally conductive plastic and preparation method thereof
  • A kind of graphene thermally conductive plastic and preparation method thereof

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preparation example Construction

[0021] The present invention also provides a kind of preparation method of graphene thermally conductive plastic, it comprises the following steps:

[0022] S1, adding resin to the barrel of the twin-screw extruder;

[0023] S2, mix graphene, dispersant, antioxidant, coupling agent and auxiliary agent uniformly to obtain a mixture, then add the mixture to the barrel of the twin-screw extruder, wherein the auxiliary agent is made of magnesium oxide, oxide composed of aluminum and silicon carbide; and

[0024] S3, adding the flame retardant to the twin-screw extruder;

[0025] S4, extruding and granulating through a twin-screw extruder to obtain a graphene heat-conducting plastic.

[0026] In step S2, the graphene may be added in the form of powder or slurry. The graphene, dispersant, antioxidant, coupling agent and auxiliary agent are mixed at 80° C. to 100° C. for 5 minutes to 15 minutes by a high-speed mixer to obtain the mixture.

[0027] Other steps will not be repeated...

Embodiment 1

[0035] A heat-conducting plastic, calculated by weight percentage, its composition and content are as follows:

[0036]

[0037]

[0038] Wherein, the resin is polyamide nylon 66;

[0039] Described flame retardant is nitrogenous flame retardant MCA-12 (melamine uric acid ester);

[0040] Described coupling agent is silane coupling agent;

[0041] The dispersant is ethylene bis stearamide EBS;

[0042] Described antioxidant is antioxidant 1098;

[0043] The preparation method of the above-mentioned thermally conductive plastic specifically includes the following steps:

[0044](1) Add the resin from the first barrel port (main feeding port) of the twin-screw extruder;

[0045] (2) Put graphene, coupling agent, magnesium oxide, aluminum oxide, silicon carbide, antioxidant, and dispersant into a high-speed mixer and mix for 5 minutes. The temperature is controlled at 80° C. A section of cylinder is added;

[0046] (3) The flame retardant is added from the fifth secti...

Embodiment 2

[0051] A heat-conducting plastic, calculated by weight percentage, its composition and content are as follows:

[0052]

[0053] Wherein, the resin is ABS;

[0054] The flame retardant is a mixture of antimony trioxide and decabromodiphenylethane in a mass ratio of 1:5;

[0055] Described coupling agent is silane coupling agent;

[0056] Described dispersant is liquid paraffin;

[0057] Described antioxidant is antioxidant 1098;

[0058] The preparation method of the above-mentioned thermally conductive plastic specifically includes the following steps:

[0059] (1) Add the resin from the first barrel port (main feeding port) of the twin-screw extruder.

[0060] (2) Put graphene, coupling agent, magnesium oxide, aluminum oxide, silicon carbide, antioxidant, and dispersant into a high-speed mixer and mix for 10 minutes. The temperature is controlled at 85°C, and then the twin-screw extruder Part of the cylinder is added;

[0061] (3) The flame retardant is added from t...

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Abstract

The invention relates to a graphene thermal conductive plastic. The graphene thermal conductive plastic comprises, by mass, 60 to 90% of a resin, 1 to 20% of graphene, 5 to 20% of a fire retardant, 1 to 10% of a dispersant, 0.5 to 5% of an antioxidant, 0.1 to 5% of a coupling agent, and 1 to 10% of an auxiliary agent. The invention also provides a preparation method of the graphene thermal conductive plastic. Adding of magnesium oxide, aluminum oxide, and silicon carbide is capable of achieving uniform distribution of grapheme, and increasing thermal conductivity of the graphene thermal conductive plastic.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to a graphene thermally conductive plastic and a preparation method thereof. Background technique [0002] As an important polymer compound material, plastic has a wide range of applications. Unlike metal materials, which are difficult to process, high cost, and low production efficiency, plastics have the advantages of high design freedom, easy processing, and low cost. Therefore, the application of plastics instead of metals continues to expand internationally. However, plastics also have shortcomings. Compared with the high thermal conductivity of metals, their thermal conductivity is generally poor, which limits the application of plastics in the field of heat conduction and heat dissipation. [0003] For example, the Chinese patent publication number is CN104292826A, published on January 21, 2015, named as a thermally conductive plastic and its preparation method. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L69/00C08L55/02C08L77/00C08L81/02C08K13/02C08K3/04C08K3/22C08K3/34B29C48/92
CPCB29C48/92B29C2948/92704C08K3/04C08K3/22C08K3/34C08K13/02C08K2003/222C08K2003/2227C08K2201/011C08L55/02C08L77/06C08L91/06C08L77/02
Inventor 付正伟唐长林赵守仁吴超陈双佳刘小斌赵永胜黄维威
Owner NINGBO MORSH NEW MATERIALS
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