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Magnetic/high-infrared-emissivity composite material, preparation method and application thereof

A technology of infrared emissivity and composite materials, applied in the field of magnetic/high infrared emissivity composite materials and their preparation, to achieve the effects of increasing surface roughness, large specific surface area, and improving infrared radiation performance

Pending Publication Date: 2021-12-28
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composite materials of the above technologies can only be applied on the surface of the heating body (electric heating body or electromagnetic induction heating body) to achieve the heating effect

Method used

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  • Magnetic/high-infrared-emissivity composite material, preparation method and application thereof
  • Magnetic/high-infrared-emissivity composite material, preparation method and application thereof
  • Magnetic/high-infrared-emissivity composite material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A magnetic / high infrared emissivity composite material (with modified nano-Fe 3 o 4 is a magnetic nanomaterial, graphene is an infrared radiation material), and is prepared through the following steps:

[0032] (1) In a beaker, put 10g Fe(NO 3 ) 3 9H 2 Dissolve O in 20ml of absolute ethanol. After it is completely dissolved, add 9.8g of urea and stir thoroughly. After a few minutes, a light blue precipitate gradually forms at the bottom of the beaker. After stirring for 1 hour, wash with ethanol, filter under normal pressure, and dry naturally After that, a light green precipitate iron-urea precursor was obtained. Then put 1 g of iron-urea precursor into the autoclave and heat at 250 °C for 2 h to prepare nano-Fe 3 o 4 .

[0033] (2) Add 4g nanometer Fe 3 o 4 , 40ml of xylene and 1.2ml of distilled water were sequentially added into a 250ml three-neck flask, ultrasonically dispersed for 30min to form a magnetic fluid. Then add 15g of 3-chloropropyltriethoxysil...

Embodiment 2

[0036] A magnetic / high infrared emissivity composite material (with modified nano-Fe 3 o 4 For magnetic nanomaterials, carbon nanotubes for infrared radiation materials), prepared by the following steps:

[0037] (1) In a beaker, put 10g Fe(NO 3 ) 3 9H 2 Dissolve O in 20ml of absolute ethanol. After it is completely dissolved, add 9.8g of urea and stir thoroughly. After a few minutes, a light blue precipitate gradually forms at the bottom of the beaker. After stirring for 1 hour, wash with ethanol, filter under normal pressure, and dry naturally After that, a light green precipitate iron-urea precursor was obtained. Then put 1 g of iron-urea precursor into the autoclave and heat at 250 °C for 2 h to prepare nano-Fe 3 o 4 .

[0038] (2) Add 4g nanometer Fe 3 o 4 , 40ml of xylene and 1.2ml of distilled water were sequentially added into a 250ml three-neck flask, ultrasonically dispersed and stirred for 30min to form a magnetic fluid. Then add 15g of 3-chloropropyltriet...

Embodiment 3

[0041] A magnetic / high infrared emissivity composite material (modified nano-TiO 2 is a magnetic nanomaterial, graphene is an infrared radiation material), and is prepared through the following steps:

[0042] (1) Take 2mol of TiCl in an ice-water bath with strong stirring 4 Slowly drop into 100ml of distilled water, set the volume to 2mol / L stock solution, take 5ml stock solution and dilute to 1mol / L, slowly add 50mol / L sodium hydroxide solution under stirring condition, keep 30℃ for reaction, Nano-TiO 2 Precursor. Nano TiO 2 The precursor was placed in a high-pressure reactor and reacted at 130 °C for 5 h, the product was separated by filtration, and then dried in a drying oven at 50 °C for 24 h to obtain nano-TiO 2 powder.

[0043] (2) 4g nano-TiO 2 The powder, 40ml of xylene and 1.2ml of distilled water were sequentially added into a 250ml three-neck flask, ultrasonically dispersed and stirred for 30min to form a magnetic fluid. Then add 15g of 3-chloropropyltrietho...

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Abstract

The invention provides a magnetic / high-infrared-emissivity composite material, a preparation method and application thereof. According to the invention, the composite material is prepared by bonding and / or associating a modified magnetic nano material with an infrared radiation material, so that the prepared composite material has high magnetic conductivity of the magnetic nano material and high infrared emissivity of the infrared radiation material; and when the composite material is coated on the surface of an electric heating body, an efficient infrared coating can be formed, and the composite material can also be coated on the surface of a non-heating body to generate heat under the action of a magnetic field and transmit the heat in an infrared radiation form, so that the heating efficiency is high, the application range is wide, and uniform heating can be realized.

Description

technical field [0001] The invention relates to the field of tobacco heating, in particular to a magnetic / high infrared emissivity composite material and its preparation method and application. Background technique [0002] Heat-not-burn tobacco products are new types of tobacco products that use a special heat source to heat the shredded tobacco without burning the shredded tobacco. It has three main characteristics: non-combustion, providing nicotine for smokers, and low tar content. Because its heating temperature (below 500°C) is lower than the combustion temperature (600-900°C) of traditional cigarettes, it reduces harmful components, sidestream smoke and environmental smoke (second-hand smoke) produced by pyrolysis and thermal synthesis of tobacco at high temperature ) The amount of release is also greatly reduced; on this basis, the nicotine in the cigarette is released, providing consumers with a certain tobacco characteristic experience. There are three main heatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/62C09D7/61C09D163/00C09D133/00C09D5/23
CPCC09D7/62C09D7/61C09D163/00C09D5/23C08K2201/011C08K2003/2275C08K2201/01C08K2003/2241C08L33/00C08K9/06C08K3/22C08K3/042C08K3/041Y02P20/10
Inventor 刘华臣黄婷蒋慧昀谭建吴聪唐良颖
Owner HUBEI CHINA TOBACCO IND
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