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Light-transparent wave-absorbing and heat-conducting composite material as well as preparation method and application thereof

A thermally conductive composite material and transparent technology, applied in the field of materials, can solve problems such as few related reports, and achieve the effects of easy industrial production, clear technical route, and simple preparation process

Pending Publication Date: 2022-03-11
QINGYUAN HUAYUAN INST OF SCI & TECH COLLABORATIVE INNOVATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current main research is mainly on traditional optically opaque materials, and there are few related reports on the organic combination of materials such as nanocellulose, boron nitride and graphene with optical properties.

Method used

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  • Light-transparent wave-absorbing and heat-conducting composite material as well as preparation method and application thereof
  • Light-transparent wave-absorbing and heat-conducting composite material as well as preparation method and application thereof

Examples

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Embodiment 1

[0040] This embodiment provides a light-transparent wave-absorbing and heat-conducting composite material, including the following raw materials in parts by weight: 80 parts of nanocellulose, 18 parts of boron nitride nanosheets, 14 parts of graphene nanosheets and 0.7 parts of additives;

[0041] Concrete preparation method comprises the following steps:

[0042] (1) Preparation of nanocellulose: 0.20g TEMPO and 1.6g NaBr are added to 2000mL water, then add 20g cellulose, then add 24g of sodium hypochlorite solution with a mass percentage of 10%, stir at room temperature for 10min, then Add dropwise a 1% NaOH aqueous solution into the reaction system until the pH of the system is 10, stop the reaction to obtain a cellulose slurry, then crush the cellulose slurry with a homogenizer for 10 minutes to obtain nanocellulose ; Wherein, the diameter of nanocellulose is 5.6nm;

[0043](2) Preparation of functional dispersion: Weigh 18 parts of boron nitride nanosheets, 14 parts of g...

Embodiment 2

[0047] The only difference between this embodiment and embodiment 1 is that 80 parts of nanocellulose, 15 parts of boron nitride nanosheets, and 14 parts of graphene nanosheets.

Embodiment 3

[0049] The only difference between this embodiment and Example 1 is that 80 parts of nanocellulose, 22 parts of boron nitride nanosheets, and 14 parts of graphene nanosheets.

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Abstract

The invention discloses a light-transparent wave-absorbing and heat-conducting composite material and a preparation method and application thereof, and belongs to the technical field of materials.The light-transparent wave-absorbing and heat-conducting composite material is prepared from, by weight, 60-89 parts of nanocellulose, 8-35 parts of boron nitride nanosheets, 10-37 parts of graphene nanosheets and 0.2-2 parts of auxiliaries, the two-dimensional boron nitride nanosheets and the two-dimensional graphene nanosheets in proper parts by weight are assembled with the nanocellulose under the assistance of a small amount of auxiliaries to form the light-transparent heat-absorbing and heat-conducting material, the three nanosheets have good interfacial compatibility, and the light-transparent heat-absorbing and heat-conducting material also has high light-transparent performance on the premise of meeting heat-absorbing and heat-conducting requirements, so that the light-transparent heat-absorbing and heat-conducting material is suitable for being used as a light-transparent heat-absorbing and heat-conducting material. The material can be applied to the field of visual 5G electronic devices; meanwhile, the preparation process of the light-transparent wave-absorbing and heat-conducting composite material provided by the technical scheme of the invention is simple, the technical route is clear, and industrial production is easy.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a light-transparent wave-absorbing and heat-conducting composite material and a preparation method and application thereof. Background technique [0002] Heat dissipation and electromagnetic shielding have always been the two major problems that electronic products need to solve. At the same time, in some special fields, the optical transparency of wave-absorbing and heat-conducting materials has also put forward higher and higher requirements; with the development of 5G, the functions of electronic products and Circuits are becoming more and more complex, which is easy to observe and understand in time, and the heat generated needs to be dissipated faster. At the same time, the requirements for anti-electromagnetic interference between electronic components are getting higher and higher. There is an urgent need for optically transparent and high-performance heat-co...

Claims

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Application Information

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IPC IPC(8): C08L1/04C08K7/00C08K3/38C08K3/04C09K5/14H05K9/00H05K7/20
CPCC08K7/00C08K3/38C08K3/042C09K5/14H05K9/0081H05K7/20C08K2201/011C08K2003/385C08L2201/10C08L1/04
Inventor 黎家强马晓阳吴燕如段雨龙黄家奇杨涛
Owner QINGYUAN HUAYUAN INST OF SCI & TECH COLLABORATIVE INNOVATION CO LTD
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