阅读说明：本技术 一种不燃碳晶发热板及其制备方法 (Non-combustible carbon crystal heating plate and preparation method thereof ) 是由 张涛 杨荣 邢帅 胡良杰 于 2019-11-19 设计创作，主要内容包括：本发明提供了一种不燃碳晶发热板,包括第一绝缘层、第二绝缘层、发热层,所述第一绝缘层、发热层、第二绝缘层依次贴合并固定,所述发热层由石墨化碳基类发热材料制成,所述第一绝缘层、第二绝缘层均由无机材料制成,所述第一绝缘层上固定有正负导电极,导电极与发热层紧密贴合。本发明的不燃碳晶发热板绝缘层防火等级达到A1级,绝对不会发生燃烧,彻底杜绝事故风险,同时降低了生产成本及能耗。(The invention provides a non-combustible carbon crystal heating plate which comprises a first insulating layer, a second insulating layer and a heating layer, wherein the first insulating layer, the heating layer and the second insulating layer are sequentially attached and fixed, the heating layer is made of graphitized carbon-based heating materials, the first insulating layer and the second insulating layer are made of inorganic materials, positive and negative conductive electrodes are fixed on the first insulating layer, and the conductive electrodes are tightly attached to the heating layer. The fireproof grade of the insulating layer of the non-combustible carbon crystal heating plate reaches A1 grade, so that the non-combustible carbon crystal heating plate can not burn absolutely, the accident risk is completely eradicated, and the production cost and the energy consumption are reduced.)

1. The non-combustible carbon crystal heating plate comprises a first insulating layer, a second insulating layer and a heating layer, and is characterized in that the first insulating layer, the heating layer and the second insulating layer are sequentially attached and fixed, the heating layer is made of graphitized carbon-based heating materials, the first insulating layer and the second insulating layer are made of inorganic materials, positive and negative conductive electrodes are fixed on the first insulating layer, and the conductive electrodes are tightly attached to the heating layer.

2. The non-combustible carbon crystal heat generating plate according to claim 1, wherein the insulating layer is made of mica plate.

3. The non-combustible carbon crystal heating panel according to claim 1, wherein the graphitized carbon-based heating material is a high-temperature-resistant heating carbon-based slurry.

4. The incombustible carbon crystal heat generating plate as recited in claim 1, wherein said heat generating layer is made of carbon fiber heat generating paper.

5. The incombustible carbon crystal heat generating plate as recited in claim 1, wherein the first insulating layer, the heat generating layer and the second insulating layer are fixed by rivets.

6. A method for manufacturing a noncombustible carbon crystal heat-generating plate according to any one of claims 1 to 5, comprising the steps of:

step 1, polishing an insulating layer, and fixing a positive and negative conductive electrode on the insulating layer;

step 2, spraying or printing a graphitized carbon-based heating material on one surface of the insulating layer with the conductive electrode to form a heating layer;

step 3, drying the insulating layer printed or sprayed with the heating layer;

and 4, fixing the dried insulating layer with the heating layer with the other untreated insulating layer, wherein the heating layer is positioned between the two insulating layers.

7. The method for preparing the non-combustible carbon crystal heating plate according to claim 6, wherein the positive and negative conductive electrodes in step 1 are conductive metal paste or attached metal foil printed on the insulating layer; for the way of using the printed conductive metal paste as a conductive electrode, the conductive metal paste needs to be dried.

8. The method for manufacturing the noncombustible carbon crystal heating panel according to claim 7, wherein the conductive metal paste is a conductive silver paste.

9. The method for producing a noncombustible carbon crystal heating panel according to claim 6, wherein the drying method in step 3 is baking or sintering drying.

10. The method for producing a noncombustible carbon crystal heating panel according to claim 6, wherein the fixing means in the step 4 is rivet fixing.

Technical Field

The invention relates to the technical field of electric heaters, in particular to a non-combustible carbon crystal heating plate and a preparation method thereof.

Background

Disclosure of Invention

Aiming at the problems, the non-combustible carbon crystal heating plate is provided, the fire-proof grade of the insulating layer reaches A1 grade by changing the traditional insulating layer material and the heating layer material, and the heating layer adopts the high-temperature-resistant graphitized carbon-based heating material, so that combustion can never occur.

The technical scheme adopted by the invention is as follows: the non-combustible carbon crystal heating plate comprises a first insulating layer, a second insulating layer and a heating layer, wherein the first insulating layer, the heating layer and the second insulating layer are sequentially attached and fixed, the heating layer is made of graphitized carbon-based heating materials, the first insulating layer and the second insulating layer are made of inorganic materials, positive and negative conductive electrodes are fixed on the edge of the first insulating layer, and the conductive electrodes are tightly attached to the heating layer.

Further, the insulating layer is made of mica plates.

Further, the graphitized carbon-based heating material is high-temperature-resistant heating carbon-based slurry.

Further, the heating layer is made of carbon fiber heating paper.

Furthermore, the first insulating layer, the heating layer and the second insulating layer are fixed by rivets.

The invention also provides a preparation method of the novel non-combustible carbon crystal heating plate, which comprises the following steps:

step 1, polishing an insulating layer, and fixing a positive and negative conductive electrode on the edge of the insulating layer;

step 2, spraying or printing a high-temperature-resistant graphitized carbon-based heating material on one surface of the insulating layer with the conductive electrode to form a heating layer;

step 3, drying the insulating layer printed or sprayed with the heating layer;

and 4, fixing the dried insulating layer with the heating layer with another untreated insulating layer, wherein the heating layer is positioned between the two insulating layers.

Further, in the step 1, the positive and negative conductive electrodes are conductive metal paste or attached metal foil printed on the insulating layer; for the way of using the printed conductive metal paste as a conductive electrode, the conductive metal paste needs to be dried.

Further, the conductive metal paste is conductive silver paste.

Further, the drying method in the step 3 is baking or sintering drying.

Further, the fixing mode in the step 4 is rivet fixing.

Compared with the prior art, the beneficial effects of adopting the technical scheme are as follows: the invention changes the traditional insulating layer material and heating layer material, the fire-proof grade of the insulating layer reaches A1 grade, and the heating layer adopts high-temperature-resistant graphitized carbon-based heating material, so that combustion can never occur.

The fixing mode also changes the hot pressing mode of the traditional pressing machine, and adopts the rivet fixing mode, so that on one hand, the production process is changed, the pressing link is reduced, and the production cost and energy consumption are reduced; on the other hand, temperature-resistant glue in front of the insulating layer and the heating layer is omitted, and the combustion risk is reduced. Finally, the carbon crystal heating element is completely made into a non-combustible material, and the accident risk is completely eradicated.

Drawings

FIG. 1 is a structural view of a non-combustible carbon crystal heat-generating plate of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Because the insulating layer of the heating plate in the prior art is made of epoxy resin, the temperature resistance range of the epoxy resin is 250 ℃, the conventional carbon-based ink as the heating layer is also 200 ℃, namely, when the heating plate generates heat, the insulating layer and the heating layer can be burnt due to high-temperature hot spots caused by product faults, the product can become a combustion source, so that the fire is more serious, the existing heating plate focuses on heating, and the invention starts from the point of avoiding the combustion risk of the heating plate.

As shown in fig. 1, the non-combustible carbon crystal heating plate comprises a first insulating layer, a second insulating layer and a heating layer, wherein the first insulating layer, the heating layer and the second insulating layer are sequentially attached and fixed, the heating layer is made of graphitized carbon-based heating materials, the first insulating layer and the second insulating layer are made of inorganic materials, positive and negative conductive electrodes are fixed on the edge of the first insulating layer, and the conductive electrodes are tightly attached to the heating layer.

After the first insulating layer, the heating plate and the second insulating layer are fixed on the heating plate, the positive and negative conductive electrodes are provided with parts which can be connected with each other to the outside and are used for heating when the heating plate is electrified.

As a preferred embodiment, the insulating layer is made of mica board.

As a preferred embodiment, the graphitized carbon-based heating material is high-temperature-resistant heating carbon-based slurry. .

As another preferred embodiment, the heating layer adopts carbon fiber heating paper.

As a preferred embodiment, the first insulating layer, the heating layer and the second insulating layer are provided with a plurality of corresponding through holes at the same positions, and the first insulating layer, the heating layer and the second insulating layer are fixed in sequence by rivets through the through holes.

In the existing heating plate, because the insulating layer is made of epoxy resin, the epoxy resin is a prepreg and is provided with temperature-resistant glue, the heating plate is prepared by directly pressing during fixing; in the invention, the insulating layer is made of inorganic material, the inorganic material does not carry colloidal substances, and additional temperature-resistant glue is required to be added for pressing if the pressing and fixing are required, so that the cost is increased, and meanwhile, the additional temperature-resistant glue can be burnt due to too high temperature, so that the rivet fixing mode is adopted in the embodiment, the additional glue is not required to be added or pressed, the burning of the glue is avoided, and the cost is reduced, so that the burning risk is further reduced.

The invention also provides a preparation method of the novel non-combustible carbon crystal heating plate, which comprises the following steps:

step 1, polishing an insulating layer, and fixing a positive and negative conductive electrode on the edge of the insulating layer;

step 2, spraying or printing a graphitized carbon-based heating material on one surface of the insulating layer with the conductive electrode to form a heating layer;

step 3, drying the insulating layer printed or sprayed with the heating layer;

and 4, fixing the dried insulating layer with the heating layer with the other insulating layer, wherein the heating layer is positioned between the two insulating layers.

As a preferred embodiment, the positive and negative conductive electrodes in step 1 are conductive metal paste or attached metal foil printed on the insulating layer; for the way of using the printed conductive metal paste as a conductive electrode, the conductive metal paste needs to be dried.

As a preferred embodiment, the conductive metal paste is a conductive silver paste.

As a preferred embodiment, the metal foil is a copper foil.

As a preferred embodiment, the drying method in step 3 is baking or sintering drying.

As a preferred embodiment, the fixing manner in step 4 is rivet fixing.

According to the invention, by changing the traditional insulating layer material and heating layer material, the fireproof grade of the insulating layer reaches A1 grade, the heating layer adopts graphitized carbon-based heating material, so that combustion is absolutely avoided, meanwhile, the fixing mode also changes the hot pressing mode of the traditional press and adopts the rivet fixing mode, so that on one hand, the production process is changed, the pressing link is reduced, and the production cost and energy consumption are reduced; on the other hand, temperature-resistant glue between the insulating layer and the heating layer is omitted, the combustion risk is reduced, and finally the carbon crystal heating plate is made of non-combustible materials completely, so that the accident risk is completely eradicated.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed. Those skilled in the art to which the invention pertains will appreciate that insubstantial changes or modifications can be made without departing from the spirit of the invention as defined by the appended claims.

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.