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Heat-conducting tobacco shred and preparation method and application thereof

A technology of cut tobacco and heat conduction layer, applied in the application, smoker's products, tobacco and other directions, can solve the problems of low heat transfer efficiency, insufficient conversion and transmission of aroma components of cut tobacco, waste of resources, etc.

Pending Publication Date: 2019-12-03
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the conversion and transmission of aromatizing substances in HNB tobacco mainly depend on external heat sources; if the heat transfer efficiency is low, the conversion and transmission of aromatizing components in shredded tobacco will be insufficient, resulting in waste of resources and poor sensory comfort of HNB tobacco. Difference

Method used

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  • Heat-conducting tobacco shred and preparation method and application thereof

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Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment is used to illustrate the heat-conducting shredded tobacco and its preparation method of the present invention.

[0027] 1) Add 7.5mg of graphene, 75mg of high-temperature-resistant organic silica gel to 100g of water, and then add 1mg of sodium dodecylbenzenesulfonate, and evenly disperse to obtain a thermally conductive slurry;

[0028] 2) Dip the tobacco sheet into the above-mentioned heat-conducting slurry, and let it stand for 3-5 minutes;

[0029] 3) Drying the impregnated tobacco sheet at 50-100°C.

[0030] Measure the thermal conductivity of the tobacco obtained in this embodiment to be 0.28Wm -1 K -1 .

Embodiment 2

[0032] This embodiment is used to illustrate the heat-conducting shredded tobacco and its preparation method of the present invention.

[0033] 1) Weighing 200 grams of sodium metaaluminate and dissolving it in 300 grams of deionized water to prepare an aqueous solution of sodium metaaluminate with a sodium metaaluminate content of 40%, i.e. a thermally conductive slurry;

[0034] 2) impregnating the tobacco flakes in an impregnation tank, after vacuuming, injecting 40% of the heat-conducting slurry, then increasing the pressure to 0.2MPa, at a temperature of 80°C, and impregnating for 0.5-10 hours;

[0035] 3) putting the tobacco sheet impregnated with sodium metaaluminate into a closed system, and feeding carbon dioxide gas at room temperature for 24 hours;

[0036] 4) Under nitrogen protection, dry at 105°C for 3-5 hours to obtain heat-conducting shredded tobacco.

[0037] The thermal conductivity of the tobacco obtained in this embodiment is measured to be 0.12Wm -1 K -...

Embodiment 3

[0039] This embodiment is used to illustrate the heat-conducting shredded tobacco and its preparation method of the present invention.

[0040] 1) Weighing 200 grams of sodium metaaluminate and dissolving it in 300 grams of deionized water to prepare an aqueous solution of sodium metaaluminate with a sodium metaaluminate content of 40%, i.e. a thermally conductive slurry;

[0041] 2) impregnating the tobacco flakes in an impregnation tank, injecting 40% of the heat-conducting slurry after vacuuming, then boosting the pressure to 1.8MPa, at a temperature of 30°C, and impregnating for 0.5-10 hours;

[0042] 3) putting the tobacco sheet impregnated with sodium metaaluminate into a closed system, and feeding carbon dioxide gas at room temperature for 24 hours;

[0043] 4) Under nitrogen protection, dry at 105°C for 3-5 hours to obtain heat-conducting shredded tobacco.

[0044] Measure the thermal conductivity of the tobacco obtained in this embodiment to be 0.33Wm -1 K -1 .

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Abstract

The invention relates to a heat-conducting tobacco shred as well as a preparation method and application thereof. The heat-conducting tobacco shred takes the tobacco leaves or tobaccos as a substrate,the surface of the substrate is covered with a heat-conducting layer, and the heat conductivity coefficient of the heat-conducting tobacco shred is 0.05-0.5 Wm-1 K-1. The preparation method of the heat-conducting tobacco shred comprises the steps of attaching the heat-conducting slurry to the surface of the substrate in a spraying or printing or dipping mode, drying, forming a heat-conducting layer, so that the heat-conducting tobacco shred is obtained. According to the novel heat conduction tobacco shred, the heat utilization rate can be effectively increased, the conversion and transmissionefficiency of the tobacco shred aroma substances is improved, and the sensory comfort of the heat-not-burn cigarettes is improved.

Description

technical field [0001] The invention relates to heat-conducting shredded tobacco and its preparation method and application, belonging to the technical field of tobacco processing. Background technique [0002] At present, electronic cigarette technology, especially heat-not-burn cigarette technology, is developing rapidly. Among them, the conversion and transmission of aromatizing substances in HNB tobacco mainly depend on external heat sources; if the heat transfer efficiency is low, the conversion and transmission of aromatizing components in shredded tobacco will be insufficient, resulting in waste of resources and poor sensory comfort of HNB tobacco. Difference. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a new type of heat-conducting shredded tobacco, which can effectively improve the utilization rate of heat, increase the conversion and transmission efficiency of aromatizing substances in shredde...

Claims

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Application Information

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IPC IPC(8): A24F47/00
Inventor 张桂兰张振涛刘家磊杨鲁伟李博杨俊玲
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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