Cellulose diacetate composite shape-stabilized phase-change material, and preparation method and application thereof

A technology of cellulose diacetate and phase change material, applied in the application, heat exchange materials, chemical instruments and methods, etc., can solve the problems of unspecified cooling effect, unspecified cigarette diameter and suction resistance, etc. Excellent solid-solid phase transition, excellent thermal stability, and the effect of reducing flue gas temperature

Inactive Publication Date: 2020-06-02
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent did not specify the diameter of the cigarette and the size of the draw resistance, and did not detail the specific cooling effect

Method used

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  • Cellulose diacetate composite shape-stabilized phase-change material, and preparation method and application thereof
  • Cellulose diacetate composite shape-stabilized phase-change material, and preparation method and application thereof
  • Cellulose diacetate composite shape-stabilized phase-change material, and preparation method and application thereof

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preparation example Construction

[0032] The preparation method of described cellulose diacetate composite shaping phase change material, comprises the following steps:

[0033] (1) Use the solvent blending method to prepare CDA acetone solution and PEG acetone solution with equal mass fractions. The specific operation is as follows: at room temperature, dissolve cellulose diacetate (CDA) in acetone solution and place it on a shaker for 1 hour; 40°C Next, dissolve polyethylene glycol (PEG) in acetone solution, and stir in a water bath for 1 h;

[0034] (2) Slowly add a certain mass of CDA acetone solution dropwise into the PEG acetone solution, stir rapidly for 10 minutes, then add a certain mass of metal powder and stir in a sealed water bath at 40°C for 6 hours;

[0035] (3) After stirring, transfer the mixed solution to a petri dish and put it in a fume hood to air dry, and then put it in an oven at 50°C for 12 hours;

[0036] (4) Grinding, tableting, and sieving the prepared material to obtain cellulose d...

specific Embodiment 1P

[0041] Preparation of specific embodiment 1 PEG6000 / CDA composite shaped phase-change material particles

[0042] Slowly add 10 g of CDA acetone solution dropwise into 40 g of PEG6000 acetone solution, and stir in a sealed water bath at 40°C for 6 hours; Drying in an oven at ℃ for 12 hours; pulverizing, pressing into tablets, passing through a 20-40 mesh sieve after crushing, to obtain 20-40 mesh granules of cellulose diacetate composite shaped phase change material.

[0043] Application of PEG6000 / CDA composite shaped phase change material particles: put 20-40 mesh sample particles into iQOS cigarettes, and take 5 cigarettes and put them into Y450AKC01 type draw resistance sorter to measure the average draw resistance. The heat-not-burn cigarettes loaded with phase-change particles were placed in the S45000601 smoking machine for simulated smoking test, and the temperature of the filter tip was measured and recorded with a thermocouple. 20-40 mesh PEG6000 / CDA composite shape...

specific Embodiment 2P

[0044] Preparation of Specific Example 2 PEG4000 / CDA Composite Shaped Phase Change Material Particles

[0045] Slowly add 15g of CDA acetone solution dropwise to 35g PEG4000 acetone solution, and stir in a sealed water bath at 40°C for 6h; drying in an oven for 12 hours; pulverizing, pressing into tablets, and passing through a 10-20 mesh sieve after crushing to obtain 10-20 mesh granules of cellulose diacetate composite shaped phase change material.

[0046] Application of PEG4000 / CDA composite shaped phase change material particles: the test method is the same as in Example 1; 10-20 mesh PEG4000 / CDA composite shaped phase change material particles can heat the temperature of the first smoke at the filter end from the control sample iQOS without burning The temperature of the cigarette product dropped from 54°C to 41°C, and the draw resistance was 0.55kPa. The cooling effect of the first 8 puffs was significantly better than that of the iQOS blank sample.

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Abstract

The invention discloses a cellulose diacetate composite shape-stabilized phase-change material for reducing the smoke temperature of a heat-not-burn cigarette, and a preparation method and an application thereof. The cellulose diacetate composite shape-stabilized phase-change material is prepared from, by mass, 10-50% of cellulose diacetate, 50-90% of a phase-change material and 1-5% of a heat conduction material through a solvent blending method. The cellulose diacetate composite shape-stabilized phase-change material has a rigid net structure and high-melting-point cellulose diacetate, so that the cellulose diacetate composite shape-stabilized phase-change material has excellent thermal stability and solid-solid phase change characteristics; phase transformation from a PEG branched chaincrystalline state to an amorphous state enables the material to achieve the functions of heat absorption and energy storage; and by adding the heat-conducting metal powder, the heat-conducting property of the material is improved, and the effect of rapid cooling is achieved. The smoking resistance of the cellulose diacetate composite shape-stabilized phase-change material is similar to that of iQOS raw tobacco, the temperatures of first to fourth puffs of smoke can be remarkably reduced, and the temperature of the first puff of smoke can be reduced to 36 DEG C at most.

Description

technical field [0001] The invention relates to the technical field of heat-not-burn cigarette cooling materials, in particular to a cellulose diacetate composite shape-setting phase-change material for reducing the temperature of heat-not-burn cigarette smoke and its application. Background technique [0002] With people's continuous attention to health problems caused by smoking and the gradual implementation of international and domestic tobacco control policies, a new concept of tobacco products - heat-not-burn cigarettes emerged at the historic moment, representative products include Philip Morris International iQOS, British American Tobacco's Glo, Reynolds Company Revo. Heat-not-burn cigarettes are low-temperature cigarettes designed with the idea of ​​"heat-not-burn", which can heat the tobacco leaves or tobacco materials to the extent that they can release nicotine without igniting the tobacco leaves or tobacco materials. Since the tobacco does not burn, The content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/02C08L1/12C08K3/08C09K5/06A24D3/02
CPCA24D3/0225C08K2003/0806C08K2003/085C08L71/02C09K5/063C08L1/12C08K3/08
Inventor 缪建文李敏敏宋国华王燕夏杰
Owner NANTONG UNIVERSITY
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