Heat accumulation capsule for decreasing temperature of main stream smoke of cigarettes as well as preparation method and application of heat accumulation capsule

A technology of cigarette mainstream smoke and heat storage capsules, which can be applied in applications, tobacco, e-liquid filter elements, etc., can solve the problems of inorganic phase change cooling materials that have not been reported, and achieve simple devices, simple steps, and controllable particle size Effect

Active Publication Date: 2019-04-26
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But the existing capsule type inorganic phase change cooling material for filter rod has not yet reported

Method used

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  • Heat accumulation capsule for decreasing temperature of main stream smoke of cigarettes as well as preparation method and application of heat accumulation capsule
  • Heat accumulation capsule for decreasing temperature of main stream smoke of cigarettes as well as preparation method and application of heat accumulation capsule
  • Heat accumulation capsule for decreasing temperature of main stream smoke of cigarettes as well as preparation method and application of heat accumulation capsule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Weigh 12 g of polyvinyl alcohol and dissolve it in 400 mL of deionized water at 80° C. to obtain a polyvinyl alcohol solution.

[0069] Weigh 20g of disodium hydrogen phosphate dodecahydrate, 1g of α-Al2O3, and 1g of sodium alginate, and melt it at 60°C to obtain a modified molten solution of disodium hydrogen phosphate dodecahydrate.

[0070] Weigh 3g of polylactic acid particles and dissolve in 30mL of dichloromethane to obtain a polylactic acid solution with a concentration of 10%.

[0071] Put the polylactic acid solution and the modified disodium hydrogen phosphate dodecahydrate molten solution into syringes respectively, place them on two syringe pumps, connect the coaxial double needle (electrospinning coaxial double needle) reactor, two The flow rates of the syringe pumps were 15mL / h (polylactic acid solution) and 8mL / h (disodium hydrogen phosphate dodecahydrate melt), which were dropped into the polyvinyl alcohol solution, mechanically stirred for 4 hours, and ...

Embodiment 2

[0075] Weigh 12 g of polyvinyl alcohol and dissolve it in 400 mL of deionized water at 80° C. to obtain a polyvinyl alcohol solution.

[0076] Weigh 20g of disodium hydrogen phosphate dodecahydrate, 1g of α-Al2O3, and 1g of sodium alginate, and melt it at 60°C to obtain a modified molten solution of disodium hydrogen phosphate dodecahydrate.

[0077] Weigh 3g of polylactic acid particles and dissolve in 30mL of dichloromethane to obtain a polylactic acid solution with a concentration of 10%.

[0078] The polylactic acid solution and the modified disodium hydrogen phosphate dodecahydrate melt were put into syringes respectively, placed on two syringe pumps, connected with coaxial double needles, and the flow rates of the two syringe pumps were 30mL / h (poly Lactic acid solution), 16mL / h, drop into the polyvinyl alcohol solution, mechanically stir for 4h, the stirring speed is 300r / min, filter the product under reduced pressure, wash with deionized water, then collect, freeze and...

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Abstract

The invention discloses a heat accumulation capsule for decreasing the temperature of main stream smoke of cigarettes. The heat accumulation capsule comprises a wall material and a core material, wherein the core material contains an inorganic phase-change material; and the wall material is polylactic acid; and the inorganic phase-change material is disodium hydrogen phosphate dodecahydrate. The invention further discloses a preparation method of the heat accumulation capsule. The preparation method comprises the steps of simultaneously dropwise adding a core material solution and a wall material solution into concretion liquid respectively through inner holes of an electrostatic spinning coaxial needle head and gaps between inner and outer holes of the electrostatic spinning coaxial needle head, stirring, and carrying out solid-liquid separation, washing, cooling and concretion. The preparation method is different from existing commonly adopted chemical methods, and the inorganic phase-change material is coated by virtue of a physical method. Compared with the chemical methods, the preparation method has the advantages that the complicated chemical reaction steps are reduced, theovermuch chemical solvent is not used, a device is simple, and the particle size of the heat accumulation capsule is controllable.

Description

technical field [0001] The invention relates to the field of inorganic hydrated salt phase-change materials, in particular to a preparation method of encapsulated inorganic hydrated salt heat storage capsules. Background technique [0002] During the cigarette smoking process, the heat generated by the cigarette burning cone will be carried to the filter by the mainstream smoke, and as the cigarette is smoked, the temperature of the smoke passing through the filter will gradually increase. Previous research results have shown that the smoke temperature at the filter end can reach up to 70°C to 80°C when the puff is near the end of the first 2-3 puffs, and the smoke temperature at the filter end is the highest in the deep suction mode. The temperature even reaches about 100°C. Excessive filter temperature not only affects the interception effect of the filter on smoke aerosol particles in the filter, but also affects consumers' recognition of the sensory quality of smoke. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/02C09K5/06
CPCA24D3/0216C09K5/063
Inventor 谢国勇樊娜袁鼎浩银董红尹双凤
Owner CHINA TOBACCO HUNAN INDAL CORP
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