Organic/inorganic composite phase-changing material capable of controlling smoke temperature of cigarette filter as well as preparation method and application of organic/inorganic composite phase-changing material

A technology of inorganic composite and phase change materials, applied in heat exchange materials, applications, e-liquid filter elements, etc., can solve the problems of poor smoke sensory quality and reduced filter retention efficiency, and achieve low cost, no need for special equipment, raw materials Easy to get effect

Active Publication Date: 2015-03-25
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems in the prior art that the filter tip interception efficiency is reduced and the sensory quality of the smoke is poor due to the excessively high smoke temperature during the smoking process of the cigarett

Method used

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  • Organic/inorganic composite phase-changing material capable of controlling smoke temperature of cigarette filter as well as preparation method and application of organic/inorganic composite phase-changing material
  • Organic/inorganic composite phase-changing material capable of controlling smoke temperature of cigarette filter as well as preparation method and application of organic/inorganic composite phase-changing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 18.8g hexacane (C 21 h 44 ) was heated to 50°C and melted, 1.2g of expanded graphite was added under stirring conditions for equal volume impregnation, and finally cooled and crystallized at a temperature not higher than 25°C for 2 hours to obtain 20.0g of organic-inorganic composite phase change materials, of which two The undecane loading was 94%. The phase change heat of this organic-inorganic composite phase change material is 156J / g, the phase change temperature is 32°C, and its DSC curve is as follows figure 1 shown. Weigh 30 mg / piece of composite phase-change material to prepare composite filter, and smoke in ISO mode on a single-hole smoking machine (puffing time is 2s, puffing interval is 58s, and the puffing capacity of each puff is 35mL). The gas phase temperature detector detects the filter flue gas temperature online. The test results show that, compared with the control sample, the composite filter with phase change material has a significant eff...

Embodiment 2

[0026] Weigh 16g hexacane (C 21 h 44 ) heated to 50°C to melt, add 4.0g of silica gel particles (30-60 mesh) under stirring conditions for equal volume impregnation, and finally cool and crystallize at a temperature not higher than 25°C for 2 hours to obtain 20.0g of organic-inorganic composite A phase change material, wherein the loading of hexacane is 80%. The phase change heat of the organic-inorganic composite phase change material is 128J / g, and the phase change temperature is 33°C. Weigh 40 mg / piece of composite phase-change material to prepare composite filter, and smoke in ISO mode on a single-hole smoking machine (puffing time is 2s, puffing interval is 58s, and the puffing capacity of each puff is 35mL). The gas phase temperature detector detects the filter flue gas temperature online. The test results show that, compared with the control sample, the composite filter with phase change material has a significant effect on reducing the temperature of the flue gas, e...

Embodiment 3

[0028] Weigh 18g eicosane (C 20 h 42 ) was heated to 50°C and melted, then 2.0g of expanded graphite was added under stirring conditions for equal volume impregnation, and finally cooled and crystallized at a temperature not higher than 25°C for 2 hours to obtain 20.0g of organic-inorganic composite phase change materials, of which two The loading of undecane was 90%. The phase change heat of the organic-inorganic composite phase change material is 136J / g, and the phase change temperature is 34°C. Weigh 40 mg / piece of composite phase-change material to prepare composite filter, and smoke in ISO mode on a single-hole smoking machine (puffing time is 2s, puffing interval is 58s, and the puffing capacity of each puff is 35mL). The gas phase temperature detector detects the filter flue gas temperature online. The test results show that, compared with the control sample, the composite filter with phase change material has a significant effect on reducing the temperature of the f...

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Abstract

The invention discloses an organic/inorganic composite phase-changing material capable of controlling the smoke temperature of a cigarette filter as well as a preparation method and an application of the organic/inorganic composite phase-changing material. The composite phase-changing material is formed by loading alkane of C19 to C21 onto expansive graphite or porous silicon oxide particles. The preparation method comprises the steps of heating the alkane of C19 to C21 for melting, adding expansive graphite and/or porous silica gel particles, adequately stirring the alkane and the expansive graphite and/or the porous silica gel particles to obtain a mixture, and cooling and crystallizing the mixture under the condition that the temperature is not more than 25 DEG C to obtain the organic/inorganic composite phase-changing material. In the preparation method, raw materials are easy to obtain, the method is simple to operate and low in cost; the prepared composite phase-changing material is high in phase-changing latent heat and high in heat transfer performance. When the prepared composite phase-changing material is added to a cigarette filter stick, the temperature of mainstream smoke of a cigarette can be effectively reduced; moreover, the prepared composite phase-changing material has characteristics of little addition amount and obvious cooling effect.

Description

technical field [0001] The invention relates to a composite phase-change material capable of regulating the smoke temperature of cigarette filters, a preparation method and application thereof, and belongs to the technical field of cigarettes. Background technique [0002] The mainstream smoke aerosol produced after cigarette smoking is composed of gas phase and particle phase. The particle phase material in the smoke accounts for about 4.5%, and the moisture and carbon dioxide in the gas phase material account for about 90% of the gas phase. Cigarette filters are widely used in cigarette products because of their strong filtering effect on smoke particles, which can significantly reduce the harm of harmful components in smoke to human health and improve the quality of smoking. The function of the filter is to filter the aerosol particles in the smoke through direct interception, inertial collision and diffusion deposition. The flue gas temperature has an important influenc...

Claims

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Application Information

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IPC IPC(8): C09K5/06A24D3/14A24D3/16
Inventor 谢国勇赵海红陈秀平银董红杜文钟科军
Owner CHINA TOBACCO HUNAN INDAL CORP
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