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Composite metal ceramic heating body and preparation method and application thereof

A ceramic heating element and ceramic rod technology, applied in the directions of copying/marking method, application, smoker's products, etc., can solve the problems of high resistance control, deviation of resistance temperature coefficient, high defective rate of production products, and achieve reliable overall heating. The effect of high performance, consistent temperature coefficient of resistance and low defective rate of production products

Inactive Publication Date: 2021-02-05
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the internal electrode is included in the middle of the alumina ceramics on both sides and the alumina ceramics absorb heat, the heating efficiency of the internal electrodes is not high, and therefore the efficiency of the entire ceramic heating element is not high, and due to the external body, the ceramic heating element Thickened, difficult to insert and insert in low-temperature smoke
Although there are a wide variety of electronic paste products used to prepare heating elements in the current technology, however, the heating elements made of electronic paste in the prior art have different batches, resulting in a large deviation in the temperature coefficient of resistance. Defects, resulting in extremely difficult resistance control, high defective rate of produced products, large errors in the temperature coefficient of product resistance, and inability to accurately control the temperature of the circuit program and other adverse results
In addition, for existing electronic paste products, it is difficult to achieve a low temperature coefficient of resistance while ensuring a satisfactory error in the temperature coefficient of resistance

Method used

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  • Composite metal ceramic heating body and preparation method and application thereof
  • Composite metal ceramic heating body and preparation method and application thereof
  • Composite metal ceramic heating body and preparation method and application thereof

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preparation example Construction

[0029] For the ceramic rod base and the electronic paste composition in the preparation method of the ceramic heating element of the present invention, the preferred implementation of the material and shape of the ceramic rod base and the composition of the electronic paste composition, etc. can be the same as previously described, Therefore, it will not be repeated here.

[0030] According to the present invention, in order to make the ceramic heating element have the advantages of fast heating and easy insertion and insertion in low-temperature smoke, the preparation method of the present invention uses decal printing to attach the electronic paste to the ceramic rod base, which can not only effectively reduce the ceramic The thickness of the heating element can be reduced, and the printed circuit (that is, the electronic paste) can be directly exposed on the surface of the ceramic heating element, so the heating efficiency is greatly improved. For the same consideration of p...

Embodiment 1

[0038] Weigh 89 parts by weight of tungsten powder, 11 parts by weight of graphene and 4 parts by weight of porcelain powder and mix them uniformly. After mixing the mixed powder with 10 parts by weight of an organic carrier, put it into a planetary ball mill for ball milling, wherein absolute ethanol is used as For the ball milling medium, the weight ratio of the mixture to the ball milling medium is 1.5:1, the ball milling speed is 500r / min, and the time is 1.5h, so as to prepare the electronic paste composition.

[0039] According to the content shown in Table 1, the electronic paste compositions A1-A13 were prepared in the same manner as above, and 5 batches were prepared for each electronic paste, and then all batches of electronic paste compositions were passed through the It is printed on a ceramic substrate by conventional techniques in the art such as screen printing to form a heating element. Measure the resistance value of the heating element made by each batch of e...

Embodiment 2

[0047] Weigh 87 parts by weight of nickel powder, 13 parts by weight of graphene and 5 parts by weight of porcelain powder and mix them uniformly. After mixing the mixed powder with 10 parts by weight of an organic carrier, put it into a planetary ball mill for ball milling, wherein absolute ethanol is used as For the ball milling medium, the weight ratio of the mixture to the ball milling medium is 1.5:1, the ball milling speed is 500r / min, and the time is 1.5h, so as to prepare the electronic paste composition.

[0048] According to the contents shown in Table 3, the electronic paste compositions B1-B13 were prepared in the same manner as above, and 5 batches were prepared for each electronic paste, and then all batches of electronic paste compositions were passed through the It is printed on a ceramic substrate by conventional techniques in the art such as screen printing to form a heating element. Measure the resistance value of the heating element made by each batch of el...

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Abstract

The invention provides a composite metal ceramic heating body and a preparation method thereof. The ceramic heating body comprises a ceramic rod base body and a resistance heating element arranged onthe surface of the ceramic rod base body. The method comprises printing an electronic paste composition applique on a surface of a ceramic rod substrate. In addition, the invention also provides application of the ceramic heating body in a heater for a novel tobacco product. The ceramic heating body and the ceramic heating body prepared through the method have the advantages of being fast in heating and easy to draw and insert in low-temperature smoke, and the ceramic heating body printed through the electronic paste composition applique has the consistent and low resistance temperature coefficient. Therefore, small temperature change of the resistor in the using process can be ensured, so that the circuit is simple, and the overall heating reliability is high.

Description

technical field [0001] The invention belongs to the field of heating devices, and more specifically, the invention generally relates to a composite cermet heating element and its preparation method and application. Background technique [0002] The ceramic heating element is a heater with high-efficiency thermal distribution and excellent thermal conductivity, which can ensure uniform temperature on the hot surface, thereby eliminating hot spots and cold spots of the equipment. In addition, the ceramic heating element also has long life, good heat preservation performance, It has the advantages of strong mechanical properties, corrosion resistance and anti-magnetic field. At present, there are two main types of ceramic heating elements, namely PTC ceramic heating elements and MCH ceramic heating elements. The materials used in these two products are completely different, but the finished products are similar to ceramics, so they are collectively called "ceramic heating elem...

Claims

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Application Information

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IPC IPC(8): A24F40/46H01B1/22B41M5/00
CPCH01B1/22B41M5/00A24F40/46A24F47/00
Inventor 刘华臣黄婷陈义坤黄龙刘冰
Owner HUBEI CHINA TOBACCO IND