Boron nitride nanotube-nano-cellulose fiber composite material and preparation method thereof

Abstract

The invention relates to a boron nitride nanotube-nano-cellulose fiber composite material. The composite material is prepared from the following materials in percentage by mass: 5 to 40 percent of boron nitride nanotube, and 60 to 95 percent of nano-cellulose fiber. The invention further relates to a preparation method of the boron nitride nanotube-nano-cellulose fiber composite material. The preparation method comprises the following steps: mixing the boron nitride nanotube with a nano-cellulose fiber aqueous solution; performing ultrasonic treatment; performing solid-liquid separation to obtain the boron nitride nanotube-nano-cellulose fiber composite material. By adopting the composite material, the interface thermal resistance and phonon scattering action are reduced effectively, the heat-conducting property of the composite material is improved, and high dimension stability is achieved; the composite material is biodegradable. The preparation method is simple and mild, and can be applied to industrial production.

Description

technical field [0001] The invention belongs to the field of heat-conducting materials, and relates to a boron nitride nanotube material, in particular to a boron nitride nanotube-nanocellulose fiber composite material. Background technique [0002] With the miniaturization and intelligence of electronic components, multi-functional VLSI with higher integration has become the future development trend of integrated circuits, and the development of high-density packaging technology has become inevitable. High-density packaging will inevitably cause an increase in the heat generation density of integrated circuits (chips) and electronic devices, thereby increasing the temperature during operation. In addition, the power consumption of a semiconductor integrated circuit (or chip) is not only related to its integration level, but also closely related to the operating frequency of each electronic component. With the development and gradual application of high-frequency electronic...

AI Technical Summary

Problems solved by technology

However, the inert structure of boron nitride nanotubes and their poor interaction with polymers make it difficult to disperse in polymers, which limits the use of boron nitride nanotubes.

On the other hand, traditional polymers are non-biodegradable materials. With the shortening of the life cycle of electronic devices, electronic pollution has become a common concern. It is very necessary to develop biodegradable thermal conductive composite materials.

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