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Polymer composite material containing boron nitride aerogel and preparation method and application thereof

A technology of composite materials and boron nitride, which is applied in the field of stimulating thermal response composite materials, can solve the problems of inability to apply intelligent drivers and sensors, unsuitability for thermal response composite materials, and high requirements for preparation equipment, and achieve easy industrialized large-scale production, Good elasticity and the effect of improving thermal conductivity

Active Publication Date: 2020-03-31
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires two-way freezing to obtain boron nitride airgel with a lamellar orientation structure to form an efficient heat conduction path. It requires the use of special preparation equipment, high requirements for the preparation equipment, and high energy consumption during the preparation process.
At the same time, this material only has good thermal conductivity, but its mechanical strength is limited, so it is only used as a heat dissipation material for electronic components, not suitable for thermal response composite materials, and cannot be used in products such as smart drives and sensors. manufacture

Method used

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  • Polymer composite material containing boron nitride aerogel and preparation method and application thereof
  • Polymer composite material containing boron nitride aerogel and preparation method and application thereof
  • Polymer composite material containing boron nitride aerogel and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Reference attached Figure 1~4 , the polymer composite material containing boron nitride airgel provided in this embodiment is prepared from boron nitride airgel and resin in a molten state, and the component distribution ratio according to weight percentage is: boron nitride gas Gel 1-20%, resin 80%-99%.

[0029] Wherein, the boron nitride aerogel is a double-crosslinked elastic boron nitride aerogel, which is made by the following steps:

[0030] (1) Preparation of hydroxylated boron nitride: disperse 0.1 to 2 g of boron nitride powder into an aqueous solution of sodium cholate with a mass fraction of 0.05, disperse ultrasonically, and prepare a hydroxylated boron nitride with a concentration of 1 mg / ml to 20 mg / ml. boron nitride solution;

[0031] (2) Preparation of double-crosslinked elastic boron nitride airgel: the chemical crosslinking agent 1,4-butanediol diglycidyl ether, the accelerator benzyltriethylammonium chloride and the above steps (1) Mix the obtaine...

Embodiment 2

[0039] The polymer composite material containing boron nitride aerogel, preparation method and application provided in this example are basically the same as those in Example 1, except that:

[0040] A method for preparing a polymer thermoresponsive composite material containing boron nitride airgel, specifically comprising the following steps:

[0041](1) Preparation of hydroxylated boron nitride: disperse 1 g of boron nitride powder into an aqueous solution of sodium cholate with a mass fraction of 0.05, ultrasonically disperse, and prepare a hydroxylated boron nitride solution with a concentration of 10 mg / ml;

[0042] (2) Preparation of double-crosslinked elastic boron nitride airgel: the chemical crosslinking agent 1,4-butanediol diglycidyl ether, the accelerator benzyltriethylammonium chloride and the above steps (1) The obtained hydroxylated boron nitride solution was mixed, hydrochloric acid was added dropwise under stirring and the temperature was raised to react for ...

Embodiment 3

[0046] The polymer composite material containing boron nitride aerogel, preparation method and application provided in this example are basically the same as those in Examples 1 and 2, except that:

[0047] A method for preparing a polymer thermoresponsive composite material containing double-crosslinked elastic boron nitride airgel, comprising the following steps:

[0048] (1) Preparation of hydroxylated boron nitride: disperse 1.5 g of boron nitride powder into an aqueous solution of sodium cholate with a mass fraction of 0.05, ultrasonically disperse, and configure a hydroxylated boron nitride solution with a concentration of 15 mg / ml;

[0049] (2) Preparation of double-crosslinked elastic boron nitride airgel: the chemical crosslinking agent 1,4-butanediol diglycidyl ether, the accelerator benzyltriethylammonium chloride and the above steps (1) The obtained hydroxylated boron nitride solution was mixed, hydrochloric acid was added dropwise under stirring and the temperatur...

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Abstract

The invention discloses a polymer composite material containing boron nitride aerogel, and a preparation method and application thereof. The polymer composite material is prepared from 1-20 wt% of theboron nitride aerogel and 80-99wt% of resin. The preparation method comprises the following steps: preparing hydroxylated boron nitride through assisted stripping of sodium cholate, then preparing anelastic boron nitride aerogel through a double-crosslinking reaction, and finally performing vacuum infusion to obtain the polymer thermal-response composite material containing the double-crosslinked elastic boron nitride aerogel. At present, research on application of a three-dimensional boron nitride / polymer composite material with high thermal conductivity and mechanical strength to a thermalresponse composite material has not been reported. The polymer composite material containing the boron nitride aerogel provided by the invention has good elasticity, the mechanical strength of thermal response compounding is improved, a continuous three-dimensional heat conduction path is constructed, and the heat conduction performance of the thermal-response composite material is improved. Thecomposite material disclosed by the invention can be used as a thermal-response composite material in a stimuli-responsive material and is used for preparing an intelligent driver and a sensor.

Description

technical field [0001] The invention relates to the technical field of stimulating thermal response composite materials, in particular to a polymer composite material containing boron nitride airgel, a preparation method and an application thereof. Background technique [0002] In recent years, materials capable of monitoring and responding to changes in the external environment have attracted increasing attention. Along with the research on these smart materials, stimuli-responsive materials have aroused the interest of scientific researchers and become one of the research hotspots in the field of functional materials research. Stimulus-responsive materials refer to their ability to respond to changes in the external environment. According to the mechanism of stimulus response, stimuli-responsive materials can be divided into the following types: temperature-responsive materials, light-responsive materials and other responsive materials. Material. [0003] At present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/02C08L75/04C08L67/04C08L91/06C08L79/08C08L77/00C08K7/24C01B21/064
CPCC08K7/24C01B21/0648C08L71/02C08L75/04C08L67/04C08L91/06C08L79/08C08L77/00Y02P20/54
Inventor 丁鹏江芳宋娜施利毅
Owner SHANGHAI UNIV
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