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Heating body material for low-temperature cigarette as well as preparation method and application of heating body material

A low-temperature cigarette and heating element technology, applied in the field of tobacco products, can solve the problems of lower heating efficiency, high cost, and inability to heat tobacco sheets

Active Publication Date: 2022-07-08
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the preparation process is complicated, the cost is high, and the product quality fluctuates greatly. On the other hand, because the heating metal is wrapped by alumina ceramics, the tobacco sheet cannot be directly heated, which greatly reduces the heating efficiency, and the printed circuit is also difficult. Causes non-uniformity in the heating zone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) cleaning; the alumina ceramic powder and the ammonium bicarbonate foaming agent are subjected to pickling and ultrasonic cleaning to remove the surface oxide film and pollutants, wherein the volume fraction of the foaming agent is 10%;

[0028] 2) Mixing: Put the above powder into a ball mill tank for mixing. The ratio of ball to material used is 5:1, the rotation speed is 200rpm, the ball milling medium is high-purity ethanol, and the ball milling time is 2h;

[0029] 3) Drying: dry the ball-milled mixed powder in a vacuum drying oven at a temperature of 60°C;

[0030] 4) Molding: the dried powder is sieved and then molded, the compression pressure is 200MPa, and the pressure holding time is 30s;

[0031] 5) Immersion: Put the above-mentioned green compact and Al sheet into a ceramic crucible in a mass ratio of 1:4, and carry out infiltration treatment in a vacuum sintering furnace. The infiltration temperature is 1200°C, the infiltration time is 1h, and the vacuum...

Embodiment 2

[0034] 1) Cleaning; pickling and ultrasonic cleaning zirconia ceramic powder and calcium carbonate foaming agent to remove surface oxide film and pollutants, wherein the volume fraction of foaming agent is 25%;

[0035] 2) Mixing: Put the above powder into a ball mill tank for mixing. The ratio of ball to material used is 7:1, the rotation speed is 500rpm, the ball milling medium is high-purity ethanol, and the ball milling time is 12h;

[0036] 3) Drying: dry the ball-milled mixed powder in a vacuum drying oven at a temperature of 120°C;

[0037] 4) Molding: the dried powder is sieved and then molded, the pressing pressure is 400MPa, and the pressure holding time is 120s;

[0038] 5) Immersion: Put the above-mentioned green compact and nickel sheet into a ceramic crucible in a mass ratio of 1:1, and carry out infiltration treatment in a vacuum sintering furnace. The infiltration temperature is 2000°C, the infiltration time is 10h, and the vacuum degree is 2Pa.

[0039] 6) G...

Embodiment 3

[0041] 1) Cleaning; pickling and ultrasonic cleaning zirconia ceramic powder and calcium carbonate foaming agent to remove surface oxide film and pollutants, wherein the volume fraction of foaming agent is 15%;

[0042] 2) Mixing: Put the above powder into a ball mill tank for mixing. The ratio of ball to material used is 7:1, the rotational speed is 350rpm, the ball milling medium is high-purity ethanol, and the ball milling time is 5h;

[0043] 3) Drying: dry the ball-milled mixed powder in a vacuum drying oven at a temperature of 80°C;

[0044] 4) Molding: the dried powder is sieved and then molded, the compression pressure is 300MPa, and the pressure holding time is 60s;

[0045] 5) Immersion: put the above-mentioned green compact and Ni50Cr50 (mass fraction) alloy wire into a ceramic crucible in a mass ratio of 7:3, and carry out infiltration treatment in a vacuum sintering furnace. The degree of vacuum is 3Pa.

[0046] 6) Grinding and polishing: The immersed samples a...

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Abstract

The invention provides a heating element material for a low-temperature cigarette as well as a preparation method and application of the heating element material. The preparation raw materials of the heating element material comprise insulating ceramic and metal, the mass ratio of the metal to the insulating ceramic is (4: 1)-(1: 4). The heating body material provided by the invention has the resistivity required by a low-temperature cigarette appliance, and the resistance value can be regulated and controlled, so that the heating effect can be improved; overall heating can be achieved, and heat efficiency can be improved; the preparation process is simple, and the cost is low. Experimental results show that: the resistivity is 572 to 2301 [mu] omega.cm; and the strength is 321 to 864 MPa.

Description

technical field [0001] The invention belongs to the technical field of tobacco products, and in particular relates to a heating element material for low-temperature cigarettes and a preparation method and application thereof. Background technique [0002] At present, the heating devices used for heating tobacco without burning on the market mainly include resistance heating and electromagnetic induction heating, among which resistance heating is widely used. Among them, the resistance heating elements are mainly MCH ceramics. Although it can effectively heat and atomize the atomization matrix in low-temperature cigarettes, there are still many problems. For example, the preparation process is complicated, the cost is high, and the product quality fluctuates greatly. On the other hand, because the heating metal is wrapped by alumina ceramics, the tobacco sheet cannot be directly heated, which greatly reduces the heating efficiency, and the printed circuit is also This resul...

Claims

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Application Information

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IPC IPC(8): C22C1/10
CPCC22C1/1015C22C1/1036C22C1/1068B22D23/04A24F40/46A24F40/70C22C29/12C22C29/16C22C29/065C22C29/00C22C32/0063C22C32/0005C22C32/0015C22C32/0031C22C32/0026C22C32/0021C22C32/0068C22C32/0047C22C27/025C22C27/06C22C22/00C22C38/00C22C33/04C22C19/03C22C19/07C22C9/00C22C30/00C22C30/02C22C1/1021Y02B30/00
Inventor 刘华臣唐良颖谭健吴聪黄婷
Owner HUBEI CHINA TOBACCO IND
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