阅读说明：本技术 导电膜及其制备方法、可发热云母管及其制造方法 (Conductive film and preparation method thereof, and heatable mica tube and manufacturing method thereof ) 是由 韦钧 于 2019-11-13 设计创作，主要内容包括：本发明揭示了一种导电膜,包括以下份数原料,云母粉45～60份,金属粉30～40份,胶粘剂15～10份。其中,所述胶粘剂包括,按重量计,固体含量50～52％的有机硅树脂胶20～25份、有机溶剂75～80份。本发明还揭示了上述导电膜的制备方法。本发明揭示了一种可发热云母管,包括云母纸以及固化于所述云母纸上的上述导电膜。本发明公开了一种可发热云母管的制造方法。本发明的特征包括改变了云母管的结构排列,使其电阻率能满足电吹风等小型家用电器发热元件的应用条件。(The invention discloses a conductive film which comprises, by weight, 45-60 parts of mica powder, 30-40 parts of metal powder and 15-10 parts of an adhesive. The adhesive comprises, by weight, 20-25 parts of an organic silicon resin adhesive with the solid content of 50-52% and 75-80 parts of an organic solvent. The invention also discloses a preparation method of the conductive film. The invention discloses a heating mica tube, which comprises mica paper and the conductive film solidified on the mica paper. The invention discloses a method for manufacturing a heating mica tube. The present invention features that the structural arrangement of mica pipe is changed to make its resistivity meet the application condition of heating element in small household electric appliance.)

1. The conductive film is characterized by comprising the following raw materials in parts by weight:

45-60 parts of mica powder,

30-40 parts of metal powder,

15-10 parts of an adhesive.

2. The conductive film of claim 1, wherein the adhesive comprises 20 to 25 parts by weight of a silicone resin adhesive having a solid content of 50 to 52% and 75 to 80 parts by weight of an organic solvent, wherein the solid content is the net content of the insoluble resin in the silicone resin excluding the solvent.

3. The conductive film according to claim 2, wherein the conductive film comprises:

45-52 parts of mica powder,

35-40 parts of metal powder,

15-13 parts of an adhesive.

4. The conductive film of claim 3 wherein the adhesive comprises 20 to 23 parts by weight of a silicone resin adhesive having a solids content of 50 to 52% and 77 to 80 parts by weight of an organic solvent, wherein the solids content is the net content of the insoluble resin in the silicone resin excluding the solvent.

5. The conductive film according to claim 4, wherein the mica powder has a particle size of 100 to 200 mesh and the metal powder has a particle size of 200 to 300 mesh.

6. The conductive film according to claim 5, wherein the conductive film comprises:

45 parts of 200-mesh mica powder,

40 parts of 300-mesh iron powder,

15 parts of an adhesive, namely 15 parts of a rubber,

wherein the adhesive is prepared by stirring 20 parts of organic silicon resin and 80 parts of industrial alcohol.

7. The method for producing the conductive film according to any one of claims 1 to 6, wherein: mixing and stirring the mica powder, the metal powder and the adhesive, and drying to obtain the mica powder.

8. A heatable mica tube comprising a mica paper and the conductive film of any one of claims 1 to 6 cured on the mica paper.

9. The method for manufacturing the heatable mica tube according to claim 8, characterized in that it comprises the following steps:

s 1: preparing an adhesive and a conductive solution;

s 2: coating the conductive solution prepared in s1 on mica paper, drying and cutting to obtain a conductive film;

s 3: rolling the conductive film into a circular tube, installing a tube core in the circular tube and conveying the circular tube core into an oven for curing;

s 4: after the solidification is finished, opening the oven door, naturally cooling to below 50 ℃, taking out the mica tube, and extracting the tube core to obtain the heatable mica tube.

10. The method for manufacturing the heatable mica tube according to claim 9, characterized in that: the curing treatment process comprises the following steps:

sending the mica tube and the tube core into an oven at 50 ℃, uniformly heating to 150 ℃ over 2 hours, and keeping the temperature for 1.5 hours at 150 ℃;

after 1 hour, the temperature is raised from 150 ℃ to 220 ℃ at a constant speed, and the temperature is kept for 4 hours at 220 ℃;

cooling from 220 deg.C to 120 deg.C at constant speed for 2 hr;

and opening the oven door, naturally cooling to below 50 ℃, pushing out the mica tube and extracting the tube core.

Technical Field

The invention belongs to the technical field of new material application, and particularly relates to a conductive film and a preparation method thereof, a heat-generating mica tube and a manufacturing method thereof.

Background

Disclosure of Invention

An embodiment of the invention provides a conductive film and a preparation method thereof, a heating mica tube and a manufacturing method thereof.

In one embodiment, the conductive film is formed by drying and curing a conductive solution prepared from the following raw materials in parts by weight:

45-60 parts of mica powder,

30-40 parts of metal powder,

15-10 parts of an adhesive.

In one embodiment, a preparation method of the conductive film is provided, and the conductive film is prepared by mixing, stirring and drying the mica powder, the metal powder and the adhesive.

In one embodiment, a heat-generating mica tube is provided, which includes mica paper and the above-mentioned conductive film cured on the mica paper.

In an embodiment, a manufacturing method of the above heatable mica tube is provided, which includes the following steps:

s 1: preparing an adhesive and a conductive solution;

s 2: coating the conductive solution prepared in s1 on mica paper, drying and cutting to obtain a conductive film;

s 3: rolling the conductive film into a circular tube, installing a tube core in the circular tube and conveying the circular tube core into an oven for curing;

s 4: after the solidification is finished, opening the oven door, naturally cooling to below 50 ℃, taking out the mica tube, and extracting the tube core to obtain the heatable mica tube.

Compared with the prior art, the method for manufacturing the heating mica tube is a great innovation for manufacturing the heating element of the small household appliance, and the heating element is not wound by a resistance wire any more, but the heating mica tube capable of heating is used as the heating element of the electric hair drier, so that the heating speed is high, the heating area is uniform, the heating element cannot be burnt out due to local overheating, and the insulation layer is broken down and leaks electricity.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a process flow diagram of a method for manufacturing a heat-generating mica tube according to an embodiment of the present application;

FIG. 2 is a structural diagram of an application device of a device for manufacturing a heat-generating mica tube according to an embodiment of the present application;

FIG. 3 is a structural diagram of a pipe coiling device of a device for manufacturing a heat-generating mica pipe according to an embodiment of the present application;

fig. 4 is a schematic structural view of the heatable mica tube of the present invention.

Detailed Description

The invention will be more fully understood from the following detailed description, which should be read in conjunction with the accompanying drawings. Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed embodiment.

The invention provides a conductive film, which comprises the following raw materials in parts by weight:

45-60 parts of mica powder,

30-40 parts of metal powder,

15-10 parts of an adhesive.

Further, the adhesive comprises, by weight, 20-25 parts of an organic silicon resin adhesive with a solid content of 50-52% and 75-80 parts of an organic solvent, wherein the solid content is the net content of the insoluble resin with the solvent removed in the organic silicon resin.

Further, the conductive film includes:

45-52 parts of mica powder,

35-40 parts of metal powder,

15-13 parts of an adhesive agent,

further, the adhesive comprises, by weight, 20-23 parts of an organic silicon resin adhesive with a solid content of 50-52% and 77-80 parts of an organic solvent, wherein the solid content is the net content of the insoluble resin with the solvent removed in the organic silicon resin.

Furthermore, the granularity of the mica powder is 100-200 meshes, and the granularity of the metal powder is 200-300 meshes.

Further, the metal powder includes, but is not limited to, iron powder, aluminum powder, copper powder, and nickel powder.

Further, the conductive film includes:

45 parts of 200-mesh mica powder,

40 parts of 300-mesh iron powder,

15 parts of adhesive.

Further, the adhesive is prepared by stirring 20 parts of organic silicon resin and 80 parts of industrial alcohol.

The invention further discloses a preparation method of the conductive film, which comprises the steps of mixing and stirring the mica powder, the metal powder and the adhesive and drying the mixture to obtain the conductive film.

The invention further provides a heating mica tube (the structure of which is shown in figure 4), which comprises tubular mica paper and the conductive film solidified on the tubular mica paper.

Referring to fig. 1, the invention further provides a manufacturing method of the heatable mica tube, which comprises the following steps:

s 1: preparing an adhesive, namely taking 20-25 parts by weight of organic silicon resin adhesive with the solid content of 50-52% and 75-80 parts by weight of organic solvent, and uniformly stirring at normal temperature to obtain the organic silicon adhesive, wherein the solid content is the net content of insoluble resin in the organic silicon resin adhesive after the solvent is removed;

s 2: preparing a conductive solution, and fully mixing 45-60 parts by weight of mica powder, 30-40 parts by weight of metal powder and 10-15 parts by weight of the adhesive obtained in s1 to obtain the conductive solution;

s 3: coating the conductive solution prepared in s2 on mica paper, drying and cutting to obtain a conductive film;

s 4: rolling the conductive film into a circular tube, installing a tube core in the circular tube and conveying the circular tube core into an oven for curing;

s 5: after the solidification is finished, opening the oven door, naturally cooling to below 50 ℃, taking out the mica tube, and extracting the tube core to obtain the heatable mica tube.

Further, in step s4, the curing process includes:

sending the mica tube and the tube core into an oven at 50 ℃, uniformly heating to 150 ℃ over 2 hours, and keeping the temperature for 1.5 hours at 150 ℃;

after 1 hour, the temperature is raised from 150 ℃ to 220 ℃ at a constant speed, and the temperature is kept for 4 hours at 220 ℃;

cooling from 220 deg.C to 120 deg.C at constant speed for 2 hr;

and opening the oven door, naturally cooling to below 50 ℃, pushing out the mica tube and extracting the tube core.

Further, in step s4, the conductive film is rolled into a circular tube on a tube rolling machine, which is performed with a tube core made of carbon steel.

Further, in step s1, the organic solvent is industrial alcohol or the like.

Furthermore, the granularity of the mica powder is 100-200 meshes, and the granularity of the metal powder is 200-300 meshes.

Further, the metal powder includes, but is not limited to, iron powder, aluminum powder, copper powder, and nickel powder.

The invention also discloses a manufacturing device of the heatable mica tube, which comprises a smearing device, wherein the smearing device comprises:

the conductive solution supply device comprises a glue dipping tank for placing an adhesive or a conductive solution;

the rotatable gumming roller is provided with a cylindrical conductive solution attaching surface, and the gumming roller is partially immersed into a gumming tank and rotates along with the gumming roller to finish the coating of an adhesive or a conductive solution on the mica paper;

the mica paper conveying structure comprises a plurality of conveying rollers, a conveying roller and a conveying mechanism, wherein the conveying rollers are used for conveying the mica paper to smear and bake the conductive solution or the adhesive;

and the oven is used for baking and drying the coated mica paper.

The length of the oven is 12-15 meters, the running speed is 2-3 meters per minute, and the temperature in the oven is controlled at 100-120 ℃.

Further, the manufacturing device of the heatable mica tube further comprises a rolling device (shown in reference to fig. 3), which comprises: the mica tube coiling device comprises a pair roller and an upper roller arranged above the central axis of the pair roller, wherein the upper roller can move up and down relative to the pair roller, and a coiled mica tube is arranged between the upper roller and the pair roller.

The invention has the beneficial effects that the method for manufacturing the heating mica tube is a great innovation for manufacturing the heating element of the small household appliance, and the heating element is not wound by a resistance wire any more, but the heating mica tube capable of heating is used as the heating element of the electric hair drier (see figure 4), so that the heating speed is high, the heating area is uniform, the insulation layer can not be broken down and generate electric leakage due to local overheating, the mica tube capable of heating can not only heat but also insulate, and meanwhile, the method for manufacturing the heating mica tube fills the blank in the manufacturing of the heating mica tube in China.