A kind of epoxy resin composite shape-setting phase change material and its preparation method and application

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 problems such as overheating of pumping, less research on shape-setting phase-change materials, and affecting user pumping experience, etc. Achieve the effects of improving thermal conductivity, excellent solid-solid phase transition, and excellent high temperature resistance

Active Publication Date: 2022-05-03
NANTONG UNIVERSITY
View PDF4 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of epoxy resin composite shape-setting phase change material and its preparation method and application
  • A kind of epoxy resin composite shape-setting phase change material and its preparation method and application
  • A kind of epoxy resin composite shape-setting phase change material and its preparation method and application

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle size (mesh)aaaaaaaaaa
particle size (mesh)aaaaaaaaaa
Login to view more

Abstract

The invention discloses an epoxy resin-based composite shape-setting phase change material and its preparation method and application; the epoxy resin-based composite shape-setting phase change material consists of 40-55% epoxy resin cured product, % phase change material and 0-10% thermal conductive material are prepared by casting molding method, and the curing agent accounts for 33-36% of the cured epoxy resin; due to the good compatibility between the phase change material and epoxy resin and the complete curing of epoxy resin The resulting polymer matrix with a three-dimensional crosslinked network structure makes it have excellent high temperature resistance, presents the characteristics of solid-solid phase transition and is easy to process and prepare; the phase change material changes from crystalline to amorphous phase The transformation enables the material to realize the function of absorbing heat and storing energy; the addition of heat-conducting materials improves the heat-conducting performance and shape-setting performance of the composite shape-setting phase change material. Epoxy resin-based composite shape-setting phase-change materials are filled into the cooling section of iQOS supporting cigarettes in the form of particles, which can significantly reduce the temperature of the smoke at the front one to three filter tip ends.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap