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Boron nitride doped composite material and preparation method and application thereof

A composite material and boron nitride technology, applied in the field of doped boron nitride composite material and its preparation, can solve the problems of poor thermal conductivity, complex preparation process and the like

Inactive Publication Date: 2016-02-24
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, to provide a doped boron nitride composite material and its preparation method and its application method, to solve the poor thermal conductivity of substrate materials such as resin-based composite materials in the prior art, the preparation process complex technical issues

Method used

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  • Boron nitride doped composite material and preparation method and application thereof
  • Boron nitride doped composite material and preparation method and application thereof

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preparation example Construction

[0031] Correspondingly, the embodiment of the present invention also provides a preparation method of the above-mentioned doped boron nitride composite material. The process flow of the nano-silicon-carbon composite negative electrode material preparation method is as follows: figure 1 As shown, it includes the following steps:

[0032] Step S01. Prepare a mixed dispersion containing graphene oxide and boron nitride:

[0033] The graphene oxide dispersion and the boron nitride dispersion are mixed to form a mixed dispersion;

[0034] Step S02. Drying the mixed dispersion:

[0035] The mixed dispersion liquid is subjected to drying treatment.

[0036] Specifically, in order to ensure that the prepared doped boron nitride composite material has satisfactory thermal conductivity and high thermal conductivity, in the embodiment, in the process of preparing the mixed dispersion in the above step S01, the graphite oxide The olefin dispersion and the boron nitride dispersion are ...

Embodiment 1

[0052] A doped boron nitride composite material and a preparation method thereof. The preparation method of doped boron nitride composite material comprises the following specific steps:

[0053] S11. Preparation of graphene oxide dispersion:

[0054] Weigh 1.0 g of graphene oxide powder, add 500 ml of deionized water, and ultrasonically treat for 120 min with a power of 500 W to obtain a graphene oxide dispersion with a mass concentration of 2 mg / ml.

[0055] Wherein, the concrete method of preparing graphene oxide is:

[0056] a. Under the condition of ice bath, 1g of graphite powder, 1g of sodium nitrate and 46ml of concentrated sulfuric acid were stirred evenly at 1000r / min for 15min, then slowly added 6g of potassium permanganate at a rate of 1g / 10min at 600r / min Continue to stir for 60 minutes, keeping the system temperature below 20°C to obtain a mixed solution;

[0057] b. Warm up the mixed solution to 35°C and continue to stir for 1.5h; add 80ml of deionized water ...

Embodiment 2

[0065] The preparation method is the same as that of Example 1, the only difference being that the mass ratio of graphene oxide: boron nitride in step S13 is changed from 1:99 to 10:90.

[0066] After testing, the 80 μm thick graphene oxide-doped boron nitride composite paper can be prepared by the method of Example 2, and the thermal conductivity in the plane direction is 10 W / m·k.

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Abstract

The invention discloses a boron nitride doped composite material and a preparation method and application thereof. The boron nitride doped composite material of the invention includes graphene oxide and boron nitride, which are doped with each other; and the mass ratio of graphene oxide to boron nitride is (0.01-0.1):(0.9-0.99). The preparation method comprises preparation of a mixed dispersion liquid containing graphene oxide and boron nitride, and drying of the mixed dispersion liquid. Graphene oxide and boron nitride are doped with each other, so that the boron nitride doped composite material has excellent thermal conductivity, and stable performance. The preparation method of the boron nitride doped composite material has mild reaction conditions, so that the prepared boron nitride doped composite material not only has excellent heat-conducting property, but also gains guaranteed stable performance. In addition, the method has low equipment requirement and simple operation, so as to effectively reduce the production cost.

Description

technical field [0001] The invention belongs to the technical field of electronic packaging materials, and in particular relates to a doped boron nitride composite material and its preparation method and application. Background technique [0002] With the development of microelectronic devices increasingly light, thin, and small, the heat generated by electronic components accumulates rapidly. If the heat is not dissipated in time, it will have varying degrees of impact on the reliability of its performance and service life. Therefore, the substrate material The ability to dissipate heat becomes more and more important. For a long time, resin-based composite materials are the most commonly used insulating and heat-conducting materials in the microelectronics industry. [0003] However, resin-based substrate materials usually have poor thermal conductivity due to the mismatch of phonon spectra between the resin matrix and thermally conductive fillers and the low thermal cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/14
CPCC09K5/14
Inventor 孙蓉么依民曾小亮
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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