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Polyimide/inorganic material composite aerogel thermal insulation layer for smoking set

A technology of composite aerogel and polyimide, which is applied in the field of thermal insulation layer of smoking utensils, can solve the problems of impossible industrialized preparation, high graphene price and high cost, and achieve stable product shape, complex process and economical cost. Effect

Pending Publication Date: 2022-01-14
CHINA TOBACCO ZHEJIANG IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively avoid the problem that traditional polyimide-based high-performance aerogels are difficult to prepare, but the price of graphene is relatively high, and there are major defects in economy; in addition, the selected freeze-drying method is high in cost and time-consuming, and is not possible industrial production

Method used

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  • Polyimide/inorganic material composite aerogel thermal insulation layer for smoking set
  • Polyimide/inorganic material composite aerogel thermal insulation layer for smoking set
  • Polyimide/inorganic material composite aerogel thermal insulation layer for smoking set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Disperse 30g of hollow glass microspheres in 120g of NMP, stir at a high speed for 5min to obtain a uniformly dispersed suspension A; slowly pour 3g of ungelled polyimide organic solution B into the uniformly dispersed suspension A, Stir for 1 h to fully mix the two to obtain colloidal solution C;

[0035] (2) Pour the colloidal solution C into the mold, and let stand at 30°C for 24 hours to solidify the gel;

[0036] (3) Demoulding, immersing the wet gel in acetone, and replacing the solvent 3 times, each time for 24 hours, to obtain a semi-finished product;

[0037] (4) Dry the semi-finished product in an oven for 12 hours to obtain a sleeve-type composite airgel heat insulation layer.

Embodiment 2

[0039] (1) Disperse 50g of hollow glass microspheres in 180g of NMP, stir at a high speed for 5min to obtain a uniformly dispersed suspension A; slowly pour 6g of ungelled polyimide organic solution B into the uniformly dispersed suspension A, Stir for 1 h to fully mix the two to obtain colloidal solution C;

[0040] (2) Pour the colloidal solution C into the mold, and let stand at 30°C for 24 hours to solidify the gel;

[0041] (3) Demoulding, immersing the wet gel in ethanol, replacing the solvent 3 times, each time for 24 hours, to obtain a semi-finished product;

[0042] (4) Dry the semi-finished product in an oven for 12 hours to obtain a sleeve-type composite airgel heat insulation layer.

Embodiment 3

[0044] (1) Disperse 30 g of porous ceramic microbeads in 150 g of NMP, stir at high speed for 5 min to obtain a uniformly dispersed suspension A; slowly pour 10 g of ungelled polyimide organic solution B into the uniformly dispersed suspension A, Stir for 1 h to fully mix the two to obtain colloidal solution C;

[0045] (2) Pour the colloidal solution C into the mold, and let stand at 30°C for 24 hours to solidify the gel;

[0046] (3) Demoulding, immersing the wet gel in acetone, and replacing the solvent 3 times, each time for 24 hours, to obtain a semi-finished product;

[0047] (4) Dry the semi-finished product in an oven for 12 hours to obtain a sleeve-type composite airgel heat insulation layer.

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Abstract

The invention discloses a polyimide / inorganic material composite aerogel thermal insulation layer for a smoking set and a preparation method thereof. The aerogel thermal insulation layer is in a sleeve shape, and is prepared by compounding an inorganic material serving as a main body and polyimide wet gel serving as a binder and a filler and then conducting drying under normal pressure. According to the invention, the mechanical property and the thermal property of a composite thermal insulation material are comprehensively considered, and the composite thermal insulation material has the advantages of heat resistance, flame retardance, low thermal conductivity, high mechanical strength and the like, is economical in cost, easy to machine and form, stable in shape and free of powder falling, and meets the performance requirements of small heating devices such as heating non-combustion smoking sets on the thermal insulation material; and in addition, compared with supercritical drying, freeze drying and other modes, a selected normal-pressure drying process is very simple, and industrial preparation is facilitated, so the method has very wide application prospects.

Description

technical field [0001] The invention relates to the field of heat insulation layers of smoking utensils, in particular to an organic-inorganic composite airgel heat insulation layer applied to smoking utensils and a preparation method thereof. Background technique [0002] With the gradual enhancement of people's health awareness, tobacco control has become the unanimous call of the people of all countries. Traditional tobacco consumption has basically shown a downward trend in some major consuming countries and regions in the world, and various multinational tobacco companies have launched new tobacco products with reduced harm. Due to the fact that it does not need to burn, is easy to carry, has a long service life, and has little health hazards, the heat-not-burn smoking appliance market will further develop steadily. Since the heat-not-burn smoking appliance is a heating device, the heat insulation material for the heating element plays an important role. It can not onl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K7/28C08K7/24C08K3/04C08J9/28
CPCC08J9/28C08J2379/08C08K7/28C08K7/24C08K3/041C08K2201/011
Inventor 蒋健周国俊储国海肖卫强张庆华佟哲名詹晓力李媛媛
Owner CHINA TOBACCO ZHEJIANG IND
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