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Epoxy resin composite shape-stabilized phase change material and preparation method and application thereof

A technology of shape-setting phase-change materials and epoxy resins, applied in the fields of application, heat exchange materials, chemical instruments and methods, etc., can solve the problems that affect the user's suction experience, less research on shape-setting phase-change materials, and overheating of suction, etc.

Active Publication Date: 2020-07-07
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the supporting cigarettes of iQOS heat-not-burn cigarette products use gathered and folded polylactic acid film sheets to add to the cooling section to cool down, but the temperature of the first few puffs of the smoke is still high (54-60 ℃), and there is a phenomenon of overheating , which greatly affects the user's pumping experience
And the tobacco industry represented by Philip Morris International mostly studies starch-based biodegradable materials such as polylactic acid (PLA), and there are few studies on applying shape-setting phase change materials (FSPCMs) to the tobacco field.

Method used

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  • Epoxy resin composite shape-stabilized phase change material and preparation method and application thereof
  • Epoxy resin composite shape-stabilized phase change material and preparation method and application thereof
  • Epoxy resin composite shape-stabilized phase change material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of EGDS / EP Composite Shaped Phase Change Material Particles

[0041]In a water bath at 65°C, add 16.26g of EGDS to a 100mL round bottom flask, and add 5mL of 0.5% sodium dodecylbenzenesulfonate (SBDS) ethanol solution to dissolve it evenly, then add 10g of epoxy The resin was stirred for 30 min. Based on the mass percentage of EP, add 3.3g curing agent at a mass ratio of 3:1, continue to stir for about 20 minutes until the mixture enters the gel-like solidified phase, then cast the mixture in a tin foil mold while it is hot, and transfer it after cooling. Put it on a watch glass and put it in a 50°C oven to cure for 48h. The solidified target product was cooled to room temperature to obtain an EGDS / EP composite shape-setting phase change material with a mass ratio of 55:45. The prepared material is crushed and passed through a 10-20 mesh screen to obtain 10-20 mesh particles of the EGDS / EP shaped phase change material.

[0042] Application of EGDS / EP comp...

Embodiment 2

[0044] Preparation of EGDS / EP / Ag Composite Shaped Phase Change Material Particles

[0045] In a water bath at 65°C, 16.26g of EGDS was added to a 100mL flask, and 5mL of SBDS ethanol solution with a mass fraction of 0.5% was added to dissolve it uniformly, and then 5wt% of silver powder was added based on the mass percentage of EGDS / EP. After it is dispersed evenly, add 10g of epoxy resin and stir for 30min. Based on the mass percentage of EP, add 3.3g curing agent at a mass ratio of 3:1, continue to stir for about 20 minutes until the mixture enters the gel-like solidified phase, then cast the mixture in a tin foil mold while it is hot, and transfer it after cooling. Put it on a watch glass and put it in a 50°C oven to cure for 48h. The solidified target product is cooled to room temperature to obtain a thermal conductivity-enhanced EGDS / EP / Ag composite shape-setting phase change material. The prepared material is crushed through 10-20 meshes to obtain 10-20 mesh particles ...

Embodiment 3

[0048] Preparation of EGDS / EP / MNWTs composite shape-setting phase change material composite shape-setting phase change material particles

[0049] The implementation method is the same as that of the specific embodiment 2, only the silver powder of the heat conducting material is replaced with multi-walled carbon nanotubes.

[0050] Application of EGDS / EP / MNWTs composite shape-setting phase-change material particles: the test method is the same as in Example 1; 10-20 mesh EGDS / EP / MNWTs composite shape-setting phase-change material particles can change the temperature of the first smoke at the filter end from the control sample The temperature of iQOS heat-not-burn cigarette products dropped from 54.7°C to 46°C, and the temperature of the smoke at the first filter end dropped by 8.8°C compared with that of iQOS supporting cigarettes.

[0051] The leakage test of the present invention is as follows: figure 1 A photograph of an epoxy-based shape-setting phase-change material du...

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Abstract

The invention discloses an epoxy resin-based composite shape-stabilized phase change material and a preparation method and application thereof. The epoxy resin-based composite shape-stabilized phase change material is prepared from 40-55% by mass of cured epoxy resin, 45-60% by mass of a phase change material and 0-10% by mass of a heat conduction material through a casting molding method, and a curing agent accounts for 33-36% of the cured epoxy resin. Due to good compatibility of the phase change material and epoxy resin and a polymer matrix with a three-dimensional cross-linked network structure formed after the epoxy resin is completely cured, the phase change material has the characteristics of excellent high-temperature resistance, solid-solid phase change and easiness in processingand preparation; the phase change material is converted from a crystalline state to an amorphous state, so that the material realizes the functions of heat absorption and energy storage; by adding theheat conduction material, the heat conduction property and the shape-stabilized property of the composite shape-stabilized phase change material are improved. The epoxy resin-based composite shape-stabilized phase change material is filled into an iQOS matched cigarette cooling section in the form of particles, so that the smoke temperature of the front one to three filter tip ends can be remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of heat-not-burn cigarette cooling materials, in particular to an epoxy resin-based composite shape-setting phase-change material for reducing the temperature of heat-not-burn cigarette smoke, and a preparation method and application thereof. Background technique [0002] Heat-not-burn cigarettes (HNB), represented by iQOS, generate flavor gas by heating tobacco. During the smoking process, there is no combustion, no open flame, no soot, no tar, no second-hand smoke hazards, low nicotine content, and real smoking. The smoking experience is loved by the majority of smokers. At present, the supporting cigarettes of iQOS heat-not-burn cigarette products use gathered and folded polylactic acid film sheets to add to the cooling section to cool down, but the temperature of the first few puffs of the smoke is still high (54-60 ℃), and there is a phenomenon of overheating , which greatly affects the user's pumping ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K13/02C08K5/103C08K3/08C08K3/04C09K5/06A24D1/20
CPCC08K13/02C08K5/103C08K3/08C08K3/041C09K5/063A24D1/00C08K2003/0806C08K2003/085C08L63/00
Inventor 缪建文李敏敏宋国华王燕夏杰
Owner NANTONG UNIVERSITY
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