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Nylon 6/graphene nanometer composite material with high thermal conductivity and preparation method thereof

A nano-composite material, graphene technology, applied in the field of high thermal conductivity nylon 6/graphene nano-composite material and its preparation, can solve the problems of reducing the performance of nylon 6 polymer material, low thermal conductivity, etc., and achieve good mechanical properties, The effect of high thermal conductivity and excellent thermal conductivity

Active Publication Date: 2013-12-18
SHANGHAI UNIV
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Problems solved by technology

At present, BN, AlN, Si3N4 and SiC, which are commonly used as thermal conductive fillers, can only be used at high addition levels due to their low thermal conductivity. Composite materials obtain higher thermal conductivity, but this will inevitably reduce other properties of nylon 6 and other polymer materials themselves

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  • Nylon 6/graphene nanometer composite material with high thermal conductivity and preparation method thereof
  • Nylon 6/graphene nanometer composite material with high thermal conductivity and preparation method thereof
  • Nylon 6/graphene nanometer composite material with high thermal conductivity and preparation method thereof

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Embodiment Construction

[0028] In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0029] A kind of preparation method of high thermal conductivity nylon 6 / graphene nanocomposite material, comprises the steps:

[0030] Preparation of graphene oxide:

[0031] Take a 1000 ml three-neck bottle with 10 parts by weight of natural flake graphite and place it in an ice bath, add 400 parts by weight of 98% concentrated sulfuric acid dropwise, slowly add 30 parts by weight of potassium permanganate under continuous stirring, and prevent the temperature of the mixture from exceeding 20 °C , for 2 hours. The ice bath was removed, and the mixture was kept in a water bath at 35°C for 2 hours. Dilute the mixed solution with 600 parts by weight of deionized water, and keep the temperature of the mixed solution not higher than 90° C. for 15 minutes. Then dilut...

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Abstract

The invention relates to a nylon 6 / graphene nanometer composite material with high thermal conductivity and a preparation method thereof. The composite material is composed of a nylon 6 matrix and nanometer graphene and is prepared by carrying out in situ polymerization and melt blending and banburying on obtained master batches and pure nylon 6. The nanometer graphene oxide adopted in the preparation method has a high radius-thickness ratio, a small amount of nanometer graphene oxide is added and is thermally reduced to form heat-conducting master batches, and an effective graphene heat conducting path can be formed effectively in the nylon 6. The small amount of nanometer graphene oxide heat conducting fillers and the master batches are added into the pure nylon 6 to be mixed and compounded so as to keep the good mechanical properties of the nylon 6 in the heat-conducting composite material. The nylon 6 / graphene nanometer composite material with high thermal conductivity, provided by the invention, is excellent in heat conducting property, simple in preparation process and low in cost, thereby being capable of being widely applied in the field of heat dissipation of automobiles, computers, LEDs (Light Emitting Diode), etc.

Description

technical field [0001] The invention relates to a high thermal conductivity nylon 6 / graphene nanocomposite material and a preparation method thereof, belonging to the field of thermal conductivity polymer composite materials. Background technique [0002] Heat sink plays a vital role in LED lighting devices, it directly determines the performance and service life of LED light source. Compared with traditional metal aluminum LED heat sinks, thermally conductive polymer materials have many advantages: (1) light weight, and the density of polymer materials is about half of that of metal aluminum (the density of polymer materials is 1.4g cm -3 , while the density of metal aluminum is 2.7g·cm -3 ); (2) It is easy to process and can be processed by injection molding; (3) It can make components with complex structures and improve the degree of design freedom; (4) Environmental protection, renewable, etc. Therefore, a new generation of high thermal conductivity thermoplastic compo...

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Application Information

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IPC IPC(8): C08L77/02C08K9/02C08K3/04C08G69/16C08J3/22
Inventor 丁鹏施利毅苏双双宋娜唐圣福
Owner SHANGHAI UNIV
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