A preparation method of an epoxy sheet with an embedded electrode

Abstract

The present invention discloses a preparation method of an epoxy sheet with built-in electrodes, including a preparation method of an epoxy sheet with built-in electrodes, and the method is as follows: The epoxy sheet is prepared by proportionally mixing epoxy resin raw materials in a reaction kettle; a fiberglass cloth or cardboard substrate is used. In the present invention, the epoxy sheet is prepared by proportionally mixing epoxy resin raw materials in a reaction kettle; a fiberglass cloth or cardboard substrate is used, and the epoxy resin is processed by means of coating and impregnation, and then dried through a tunnel furnace; the semi-cured film coming out of the tunnel furnace is subjected to electrode printing operation according to requirements; the semi-cured film printed with electrodes and a common film are introduced into a press for heating and pressing, and the specific number of pressing layers and thickness are determined according to usage requirements, not limited to the existing number of layers and thickness; the compounded epoxy sheet with built-in electrodes is assembled and manufactured according to size and assembly requirements, so that the preparation of the epoxy sheet with built-in electrodes is more convenient, the working performance of the epoxy sheet with built-in electrodes is good, and the preparation efficiency of the preparation method of the epoxy sheet with built-in electrodes is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of the preparation of epoxy sheets with built-in electrodes, and specifically to a method for preparing epoxy sheets with built-in electrodes. Background Art

[0002] A component in an electronic or electrical device or equipment, used as two ends for inputting or outputting current in a conductive medium (solid, gas, vacuum or electrolyte solution). The electrode for inputting current is called the anode or positive electrode, and the electrode for discharging current is called the cathode or negative electrode. There are various types of electrodes, such as cathodes, anodes, welding electrodes, electric furnace electrodes, etc. In a battery, an electrode generally refers to the position where an oxidation-reduction reaction occurs with an electrolyte solution. Electrodes have positive and negative polarities. Generally, the positive electrode is the cathode, which obtains electrons and undergoes a reduction reaction, while the negative electrode is the anode, which loses electrons and undergoes an oxidation reaction. An electrode can be metal or non-metal, as long as it can exchange electrons with an electrolyte solution, it becomes an electrode, and an epoxy sheet with a built-in electrode is used for auxiliary reactions.

[0003] In view of this, Chinese Patent No. CN114989567A proposes an epoxy resin composite heat-conducting sheet and its preparation method. When passing through a slit, the two-dimensional graphene fluoride heat-conducting film passes through parallel to the slit and is horizontally oriented on a polyester film to form a continuous high heat-conducting path, thereby more effectively improving the heat-conducting performance of the epoxy resin. However, in the above patent, it is not conducive to the printing operation of the electrode on the epoxy sheet, reducing the electrode performance of the epoxy sheet with a built-in electrode. Therefore, a method for preparing an epoxy sheet with a built-in electrode is needed. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a method for preparing an epoxy sheet with a built-in electrode to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention proposes a method for preparing an epoxy sheet with a built-in electrode, including a method for preparing an epoxy sheet with a built-in electrode, and the method is as follows:

[0006] A method for preparing an epoxy sheet with a built-in electrode, characterized in that the method is as follows:

[0007] Step 1, epoxy resin raw materials for epoxy sheets are mixed in a reactor in proportion. The epoxy resin is prepared in a mass ratio of: 75-85% epoxy resin, 12-16% dibutyl phthalate and 9-13% ethylenediamine. The sum of the mass ratios of each component is 100%. A certain amount of epoxy resin is first added, and then dibutyl phthalate plasticizer is added. Stir evenly, and bubbles are driven out at below 40°C for about 1h. After that, ethylenediamine curing agent is added according to the ratio and stirred evenly. The stirred epoxy resin is poured into a centrifuge tube, and then centrifuged to remove the air in the epoxy resin. When the temperature is low, the epoxy resin is not easy to flow. It is placed in an oven and heated for a period of time in advance, and then centrifuged to remove the air. Finally, it is poured into a mold and waited for it to solidify.

[0008] Step 2: The fiberglass cloth or cardboard substrate is coated with epoxy resin by dipping and then dried in a tunnel oven;

[0009] Step 3: The semi-cured film coming out of the tunnel furnace is printed with electrodes according to requirements;

[0010] Step 4: The semi-cured film after printing the electrodes and the ordinary film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to the use requirements and are not limited to the existing number of layers and thickness. The glass fiber cloth or cardboard substrate after printing the electrodes is treated with epoxy resin by coating and impregnation, and then undergoes a tunnel oven drying process. The film from the tunnel oven and the ordinary film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to the use requirements and are not limited to the existing number of layers and thickness.

[0011] Step 5: The composite electrode internal sheets are assembled and manufactured according to the size and assembly requirements.

[0012] In one example, in step 2, the fiberglass cloth or cardboard substrate can be subjected to electrode printing as required.

[0013] In one example, the glass fiber cloth or cardboard substrate after printing the electrodes is treated with epoxy resin by coating and impregnation, and then undergoes a drying process in a tunnel oven.

[0014] In one example, the film coming out of the tunnel oven and the ordinary film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are based on the use requirements and are not limited to the existing number of layers and thickness.

[0015] In one example, the number and thickness of the laminating layers of the laminating machine used in the laminating process are determined according to the use requirements and are not limited to the existing number and thickness.

[0016] The method for preparing an electrode-embedded epoxy sheet proposed by the present invention can bring the following beneficial effects:

[0017] The preparation method of the epoxy sheet with built-in electrode is as follows: the epoxy sheet is prepared by proportionally mixing epoxy resin raw materials in a reaction kettle; a fiberglass cloth or cardboard substrate is treated with epoxy resin by coating and impregnation, and then dried through a tunnel furnace; the semi-cured film coming out of the tunnel furnace is subjected to electrode printing according to requirements; the semi-cured film printed with electrodes and a common film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to usage requirements, not limited to the existing number of layers and thickness; the composite electrode built-in sheet material is assembled and manufactured according to dimensions and assembly requirements, making the preparation of the epoxy sheet with built-in electrode more convenient, having good working performance, and increasing the preparation efficiency of the preparation method of the epoxy sheet with built-in electrode. Detailed implementation manners

[0018] In order to more clearly illustrate the overall concept of the present invention, the following will be described in detail in conjunction with the description of the specification.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0020] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one solution", "some solutions", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the solution or example are included in at least one solution or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same solution or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more solutions or examples.

[0023] Example 1, the present invention provides a method for preparing an epoxy sheet with built-in electrodes, including a method for preparing an epoxy sheet with built-in electrodes, and the method is as follows:

[0024] Step 1, the epoxy sheet is proportionally prepared from epoxy resin raw materials in a reaction kettle;

[0025] Step 2, a fiberglass cloth or cardboard substrate is treated with epoxy resin by coating and impregnation, and then undergoes a drying process in a tunnel furnace;

[0026] Step 3, the semi-cured film coming out of the tunnel furnace is subjected to electrode printing according to requirements;

[0027] Step 4, the semi-cured film printed with electrodes and the ordinary film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to usage requirements, and are not limited to the existing number of layers and thickness;

[0028] Step 5, the composite epoxy sheet with built-in electrodes is assembled and manufactured according to size and assembly requirements;

[0029] The epoxy resin is prepared according to the mass ratio: 75% epoxy resin, 16% dibutyl phthalate, and 9% ethylenediamine. The sum of the mass ratios of each component is 100%. First, a certain amount of epoxy resin is added, then the plasticizer dibutyl phthalate is added, and it is stirred evenly. Bubbles are removed at a temperature below 40°C for about 1 hour. Then, the ethylenediamine curing agent is added according to the ratio and stirred evenly. The stirred epoxy resin is poured into a centrifuge tube, and then centrifuged to separate, discharging the air in the epoxy resin. When the temperature is relatively low, the epoxy resin is not easy to flow. It is preheated in an oven for a period of time in advance, and then centrifuged to remove air. Finally, it is poured into a mold and left to cure.

[0030] Example 2, the present invention provides a method for preparing an epoxy sheet with built-in electrodes, including a method for preparing an epoxy sheet with built-in electrodes, and the method is as follows:

[0031] Step 1, the epoxy sheet is proportionally prepared from epoxy resin raw materials in a reaction kettle;

[0032] Step 2: Treat a fiberglass cloth or cardboard substrate by coating and impregnating it with epoxy resin, and then subject it to a drying process in a tunnel furnace;

[0033] Step 3: Perform electrode printing operations on the film coming out of the tunnel furnace as required;

[0034] Step 4: Import the film printed with electrodes and ordinary film into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to usage requirements, not limited to the existing number of layers and thickness;

[0035] Step 5: Assemble and fabricate the composite electrode built-in sheet according to size and assembly requirements;

[0036] The epoxy resin is formulated according to the mass ratio: 75% epoxy resin, 16% dibutyl phthalate, and 9% ethylenediamine. The sum of the mass ratios of each component is 100%. First, add a certain amount of epoxy resin, then add dibutyl phthalate plasticizer, stir evenly, remove air bubbles at a temperature below 40°C for about 1 hour, and then add ethylenediamine curing agent according to the ratio, stir evenly. Pour the stirred epoxy resin into a centrifuge tube, then perform centrifugal separation to remove the air in the epoxy resin. When the temperature is relatively low, the epoxy resin does not flow easily. Preheat it in an oven for a period of time in advance, and then perform centrifugal air removal. Finally, pour it into a mold and wait for it to cure.

[0037] Example 3: The present invention provides a method for preparing an electrode built-in epoxy sheet, including that in Step 2, the fiberglass cloth or cardboard substrate can perform electrode printing operations as required.

[0038] The fiberglass cloth or cardboard substrate after printing electrodes is treated by coating and impregnating it with epoxy resin, and then subject it to a drying process in a tunnel furnace.

[0039] Import the film coming out of the tunnel furnace and ordinary film into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to usage requirements, not limited to the existing number of layers and thickness.

[0040] The epoxy resin is formulated according to the mass ratio: 80% epoxy resin, 10% dibutyl phthalate, and 10% ethylenediamine. The sum of the mass ratios of each component is 100%. First, add a certain amount of epoxy resin, then add dibutyl phthalate plasticizer, stir evenly, remove air bubbles at a temperature below 40°C for about 1 hour, and then add ethylenediamine curing agent according to the ratio, stir evenly. Pour the stirred epoxy resin into a centrifuge tube, then perform centrifugal separation to remove the air in the epoxy resin. When the temperature is relatively low, the epoxy resin does not flow easily. Preheat it in an oven for a period of time in advance, and then perform centrifugal air removal. Finally, pour it into a mold and wait for it to cure.

[0041] During the lamination process, the number of lamination layers and thickness of the laminator used are based on usage requirements and are not limited to the existing number of layers and thickness.

[0042] Working principle: Epoxy sheets are prepared by proportionally mixing epoxy resin raw materials in a reaction kettle; fiberglass cloth or cardboard substrates are treated with epoxy resin by coating and impregnation and then dried in a tunnel furnace; the semi-cured films coming out of the tunnel furnace are subjected to electrode printing operations according to requirements; the semi-cured films printed with electrodes and ordinary films are introduced into a press for heating and lamination. The specific number of lamination layers and thickness are based on usage requirements and are not limited to the existing number of layers and thickness; the composite electrode-embedded sheets are assembled according to size and assembly requirements, making the preparation of electrode-embedded epoxy sheets more convenient, with good working performance of the electrode-embedded epoxy sheets and increasing the preparation efficiency of the method for preparing electrode-embedded epoxy sheets.

[0043] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and reference can be made to the partial description of the method embodiment for the relevant parts.

[0044] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A method for preparing an epoxy sheet with an embedded electrode, characterized in that, The method is as follows: Step 1: The epoxy sheet is prepared by proportionally mixing epoxy resin raw materials in a reaction kettle. The epoxy resin is formulated according to the mass ratio: 75 - 85% epoxy resin, 12 - 16% dibutyl phthalate, and 9 - 13% ethylenediamine, and the sum of the mass ratios of each component is 100%. First, a certain amount of epoxy resin is added, then the dibutyl phthalate plasticizer is added and stirred evenly. Air bubbles are removed at a temperature below 40°C for about 1 hour. Then, the ethylenediamine curing agent is added according to the ratio and stirred evenly. The stirred epoxy resin is poured into a centrifuge tube, and then centrifuged to remove the air in the epoxy resin. When the temperature is relatively low, the epoxy resin is not easy to flow. It is preheated in an oven for a period of time in advance, and then centrifuged to remove air. Finally, it is poured into a mold and allowed to cure; Step 2: The fiberglass cloth or cardboard substrate is treated with epoxy resin by coating and impregnation, and then undergoes the drying process in a tunnel furnace; Step 3: The semi-cured film coming out of the tunnel furnace is subjected to electrode printing operation according to requirements; Step 4: The semi-cured film printed with electrodes and the ordinary film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to usage requirements, not limited to the existing number of layers and thickness. The fiberglass cloth or cardboard substrate after printing the electrodes is treated with epoxy resin by coating and impregnation, and then undergoes the drying process in a tunnel furnace. The film coming out of the tunnel furnace and the ordinary film are introduced into a press for heating and pressing. The specific number of pressing layers and thickness are determined according to usage requirements, not limited to the existing number of layers and thickness; Step 5: The assembled electrode built-in sheet is assembled and fabricated according to dimensions and assembly requirements.

2. The preparation method of an epoxy sheet with built-in electrodes according to claim 1, wherein: In Step 2, the fiberglass cloth or cardboard substrate can be subjected to electrode printing operation according to requirements.

3. A method for preparing an epoxy sheet with an internal electrode according to claim 1, characterized in that: During the pressing process, the number of pressing layers and thickness of the press used are determined according to usage requirements, not limited to the existing number of layers and thickness.