TW202208084A - A metal sheet component with a cured composite material structure and manufacturing method thereof - Google Patents

Abstract

A sheet metal element comprises a sheet metal substrate and a cured composite material structure. The sheet metal substrate has a first surface, and the first surface has a groove structure. The cured composite structure is attached to the groove structure and contains metal powder and polymer. The metal powder includes a plurality of metal particles. The cured polymer is dispersed between the metal particles and covers the metal particles. The sheet metal element of the present invention may form semi-finished products with stable properties for manufacturing the vapor chamber device and its wick structure, which is conducive to transportation and inventory management, simplifies the process of manufacturing the vapor chamber device and improves the efficiency of mass production.

Description

Sheet metal element with a cured composite structure

The present invention relates to a sheet metal element that can be used for further processing to form a vapor chamber element and its capillary structure, especially a sheet metal element that can form a porous capillary structure after thermal cracking and powder sintering, which can be used with other The sheet metal element is sealed and machined to form a vapor chamber element.

The manufacturing method of the conventional thin vapor chamber is that after etching the grooves on the sheet copper substrate, laying a copper powder mesh on the copper substrate, pressing the graphite jig and sintering at high temperature to form a capillary structure. The surface of the groove of the copper sheet substrate, and then the copper sheet substrate with the capillary structure is welded with another sheet copper substrate in the manner of the groove inside to form an air channel cavity. After further processing such as water injection, vacuuming, sealing, etc., a thin uniform temperature plate with a capillary structure is formed.

The capillary structure of the conventional vapor chamber, depending on the thickness of the element and the heat removal power, has four types: Groove, Fiber, Mesh and Sintered Powder. Powder (Sintered Powder) has the best capillary force and is not affected by gravity. However, in the production of Vapor Chamber, due to the small thickness of the components and the depth of the groove, it is difficult to fabricate the capillary structure sintered with copper powder, and the laying of copper mesh (Mesh) has become the mainstream. However, to lay a copper mesh (Mesh) in an ultra-thin temperature chamber with a thickness of less than 0.3mm, the process is quite cumbersome and difficult, and it is not easy to automate mass production, and the capillary force of the copper mesh is also poor, making it difficult to produce high efficiency average Thermoplate element.

Therefore, how to simplify the tedious process so that the process of making the capillary structure of the ultra-thin vapor chamber can meet the mass production and automatic operation is a problem that those skilled in the art try to solve.

The inventors of the present application conceived a method of manufacturing the capillary structure of the printing paste. The metal particles in the slurry are surrounded by a polymer. When the polymer is thermally cracked and the metal particles are sintered at high temperature, the metal particles are bonded to each other to form a porous capillary structure. This method can efficiently mass-produce the capillary structure of the vapor chamber with extremely thin thickness, and under suitable conditions, it has better capillary water absorption than the conventional copper mesh capillary structure, thereby improving the thermal conductivity and uniformity of the ultra-thin vapor chamber element. Thermal efficiency. However, the slurry itself contains volatile chemical solvents and has rheological properties. When placed for a long time, the viscosity of the slurry will change due to the volatilization of the solvent, thereby changing the rheological properties of the slurry. Moreover, since the metal powder is contained in the slurry, deterioration and precipitation also occur. Therefore, when using the slurry to make the capillary structure of the vapor chamber element, the variation control of the viscosity and rheology of the slurry will become a variable in the production of the high quality capillary structure of the vapor chamber element.

In view of this, the present invention further provides a sheet metal element with a cured composite material structure and a manufacturing method thereof. Let the suppliers of the vapor chamber metal sheet or the suppliers of metal sheet etching groove processing or punching groove processing can directly supply the semi-finished product with capillary structure in the groove of the metal sheet and supply it to the vapor chamber The manufacturer of the components allows the manufacturers of the vapor chamber components to easily reprocess, and form a capillary structure through the thermal cracking and sintering process, eliminating the trouble and variables of printing with rheological pastes. The present invention forms a solidified composite material structure in the groove structure of the metal sheet, so that the polymer is dispersed among the metal particles, and the formed solid composite structure. The polymer in the cured composite structure has a certain viscosity, and the dispersed metal particles are coated with the polymer. In addition, the overall structure is attached to the sheet metal element, so that it is fixed and does not flow, which is convenient for transportation and storage, and becomes a material sheet for making the temperature equalizing plate element and its capillary structure.

A sheet metal element with a cured composite material structure of the present invention is a porous capillary structure, which can be applied to make a vapor chamber element, which includes a sheet metal substrate and a cured composite material structure. The sheet metal substrate has a first surface, and the first surface has a groove structure. A cured composite structure is attached within the trench structure, further comprising metal powder and a polymer. The metal powder contains a plurality of metal particles. The polymer is interspersed between the metal particles and coats at least a portion of the surface of the metal particles. The metal particles and polymer of the cured composite adhere to each other to form a continuous structure.

Among them, when the sheet metal element is processed into a vapor chamber element, the polymer in the solidified composite structure is cracked and removed when heated to form a gap between the metal particles, and the metal powder forms a Porous capillary structure.

The metal powder includes at least one of a plurality of copper (Cu) particles and a plurality of copper alloy (Cu alloy) particles, that is, the metal particles may be copper particles or copper alloy particles.

Wherein, the cured composite material structure of the sheet metal element further includes metal oxide powder, and the metal oxide powder further includes a plurality of metal oxide particles, and the metal oxide particles are dispersed among the metal particles.

Wherein, the metal oxide powder contains at least one of a plurality of copper oxide (CuO) particles and a plurality of cuprous oxide (Cu ₂ O) particles, that is, the metal oxide particles may be copper oxide particles or cuprous oxide particles .

Wherein the cuprous oxide powder is octagonal cubic crystal with an average particle size (D50) less than 5 microns.

The polymer includes a plurality of plastic polymer materials and a plurality of synthetic fiber materials.

Wherein, the plastic polymer material is a polymethyl methacrylate material, and the synthetic fiber material is a polyamide fiber material.

Wherein, the average particle size (D50) of the metal powder is less than 53 microns.

Another aspect of the present invention is to provide a method of fabricating a sheet metal element having a cured composite structure. The steps include providing a sheet metal substrate with a groove structure; providing a slurry, the slurry is uniformly mixed with metal powder, metal oxide powder, polymer and organic solvent; laying the slurry in the groove structure; The slurry is heated and baked to volatilize the organic solvent, and the metal powder, the metal oxide powder and the polymer are cured to form a cured composite structure and attached to the groove structure of the sheet metal substrate.

Wherein, when the sheet metal element of the present invention is further processed into a vapor chamber element, the polymer in the cured composite material structure is cracked and removed during heating, so that the particles of the metal powder and the particles of the metal oxide powder are removed. A gap is formed therebetween, whereby the metal powder and the metal oxide powder are sintered in a hydrogen-containing atmosphere to form a porous capillary structure.

In summary, the present invention provides a sheet metal element with a cured composite structure and a method of making the same, the polymer of which can protect the metal particles and connect to each other, and allows the cured composite structure to adhere to the sheet metal element to avoid flow. When used for further processing and manufacturing, it can be efficiently transported and stored for batch production, thereby achieving automation and improving production efficiency. And, in the subsequent processing and sintering, the polymer on the sheet metal element can be easily burnt out. And the porous capillary structure is formed by using the pores left by the thermally decomposed polymer and the sintering of the metal powder particles.

1: Sheet metal components

10: Sheet metal substrate

102: First Surface

104: Trench Structure

1041: Columnar Support Structure

1043: Long Support Structure

12: Curing the composite structure

121: Metal particles

123: Metal oxide particles

125: Polymer

127: Gap

131: Type I Substructure

132: Type II Substructure

141: The first slurry

142: Second slurry

A: Enlarged area

2: Chain metal copper components

3: Spherical metal copper components

4: capillary structure

5: District 1

6: Second District

S1~S4: Steps

FIG. 1A is a schematic diagram illustrating a sheet metal substrate according to an embodiment of the present invention.

FIG. 1B is a schematic diagram illustrating a sheet metal element having a cured composite structure according to an embodiment of the present invention.

FIG. 1C is an enlarged schematic view of the area A in the embodiment according to FIG. 1B .

2 is a cross-sectional view illustrating a cured composite structure according to another embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating the cured composite structure according to the embodiment of FIG. 2 after sintering.

4 is a flow chart showing the steps of a method for fabricating a sheet metal element with a cured composite structure according to an embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating a manufacturing method of a sheet metal element having a cured composite material structure in another embodiment.

6 is a schematic diagram illustrating a sheet metal element having a cured composite structure according to another embodiment of the present invention.

In order for the advantages, spirit and features of the present invention to be more easily and clearly understood, detailed descriptions and discussions will follow with reference to the accompanying drawings by way of specific embodiments. It should be noted that these specific embodiments are only representative specific embodiments of the present invention, and the specific methods, devices, conditions, materials, etc. exemplified therein are not intended to limit the present invention or the corresponding specific embodiments. again, Each device in the figure is only used to express its relative position and is not drawn according to its actual scale, and will be described together first.

Please refer to FIGS. 1A , 1B and 1C. FIG. 1A is a schematic diagram of a sheet metal substrate according to an embodiment of the present invention. FIG. 1B is a schematic diagram illustrating a sheet metal element having a cured composite structure according to an embodiment of the present invention. FIG. 1C is an enlarged schematic view of the area A in the embodiment according to FIG. 1B . As shown in FIGS. 1A , 1B and 1C , the sheet metal component 1 having a cured composite material structure includes a sheet metal substrate 10 and a cured composite material structure 12 . The sheet metal substrate 10 has a first surface 102 , and the first surface 102 has a trench structure 104 . The cured composite structure 12 , attached within the trench structure 104 , further includes metal powder and cured polymer 125 . The metal powder contains a plurality of metal particles 121 . The cured polymer 125 is dispersed and encapsulated between the metal particles 121 .

The relative position of the metal particles 121 can be stabilized by adding the polymer 125 because the polymer 125 has an adhesive property. In addition, the polymer 125 fills the gaps between the metal particles 121 of the metal powder, surrounds, coats and protects the metal particles, so that the metal particles 121 are not easily oxidized and deteriorated. The solidified composite structure 12 formed by drying the slurry containing the polymer 125 and the metal powder can be attached to the sheet metal substrate 10 by the polymer 125 to avoid flow, sliding and leakage. The cured polymer does not have a fixed shape, and may be in the shape of a network, a block or a strip, but seems to fill the gaps between the metal particles 121 . There may also be gaps 127 between the polymers.

Further, the polymer 125 in the sheet metal element of the present invention can help form the cured composite material structure 12 attached to the sheet metal substrate 10 to form the capillary structure semi-finished product of the vapor chamber element. The vapor chamber element manufacturer only needs to further heat the sheet metal element with a cured composite material structure, so that the polymer is decomposed and removed and the metal powder is not sintered, and a porous capillary structure can be formed in the groove of the metal sheet. in the tank, so it is beneficial for mass production batch work. The metal particles 121 and the polymer 125 of the cured composite structure 12 are adhered to each other to form a continuous structure. In the specific embodiment used for making a thin vapor chamber element, the thickness of the sheet metal substrate 10 of the sheet metal structure is less than 1.0 mm, and the thickness of the cured composite structure is less than 0.5 mm.

The aforementioned cured composite structure 12 is further described. Please refer to FIG. 2 , which is a cross-sectional view of a sheet metal component 1 having a cured composite material structure according to another embodiment of the present invention. As shown in FIG. 2 , in addition to the aforementioned metal powder, the cured composite structure 12 includes metal particles 121 , and further includes metal oxide powder, and the metal oxide powder includes a plurality of metal oxide particles 123 . The cured composite structure 12 is formed from a slurry containing metal particles 121, metal oxide particles 123, polymer 125 and an organic solvent through a drying step. The organic solvent can increase the fluidity of the slurry to be easily disposed on the first surface 102 of the sheet metal substrate 10 , and then remove the solvent to form the cured composite structure 12 during heating and baking. One advantage of the polymer 125 is that the polymer 125 will be cracked and removed after heating, forming gaps between the metal particles 121 and the metal oxide particles 123 . When the sheet metal element with the cured composite structure is further processed, the polymer 125 in the cured composite structure 12 is heated to crack and remove, leaving only the metal particles 121 and metal oxide particles 123 between each other. void.

In a specific embodiment, the average particle size (D50) of the metal powder is less than 53 micrometers (53um), and the average particle size (D50) of the metal oxide powder is less than 5 micrometers (5um). The total weight of the metal particles 121 and the metal oxide particles 123 is greater than the total weight of the polymer, and the weight ratio is between 3-10. In addition, the metal particles 121 are spherical copper particles, and the metal oxide particles 123 are cuprous oxide (Cu ₂ O) in an octahedral crystal. The metal particles 121 , the metal oxide particles 123 and the polymer 125 are uniformly distributed to form the cured composite structure 12 , and are attached to the groove structure 104 of the sheet metal substrate 10 .

In particular embodiments, the metal oxide particles 123 may be reduced to copper via sintering in a nitrogen-hydrogen environment. The metal oxide particles 123 include at least one of a plurality of cuprous oxide (Cu2O) particles and a plurality of copper oxide (CuO) particles. The difference is the temperature required for reduction sintering in a hydrogen-containing atmosphere. Copper oxide (CuO needs to be sintered at a higher temperature to form a porous capillary structure with the metal particles. In a preferred embodiment, curing The cuprous oxide powder in the composite material structure 12 is a particle with an octahedral crystal structure. When sintered at a high temperature in a nitrogen-hydrogen mixed atmosphere, copper (Cu) begins to be reduced at the two tips of the crystal, and then stretched while reducing to form a chain. When the polymer 125 is cracked and removed, the remaining voids are conducive to the reduction of cuprous oxide crystals into copper to stretch into a chain-shaped metal copper member and sinter with the metal particles 121. Therefore, the grooves of the sheet-shaped metal elements When the cuprous oxide particles and the copper particles in the cured composite structure 12 in the groove structure 104 are sintered together in a nitrogen-hydrogen mixed atmosphere, the chain-like copper members and the spherical-like copper members are connected and stacked to form a three-dimensional porous capillary structure. .

Wherein, the aforementioned metal particles 121, more specifically, the metal particles may include at least one of a plurality of copper (Cu) particles and a plurality of copper alloy (Cu alloy) particles.

The polymer 125 includes a plurality of plastic polymer materials and a plurality of synthetic fiber materials. The plastic polymer material is polymethyl methacrylate material, and the synthetic fiber material is polyamide fiber material. The polymethyl methacrylate material is also called acrylic, with a boiling point of about 200 degrees Celsius. Polyamide fiber is also called nylon. At temperatures that do not reach the melting point of the metal, the polymer will first crack. Cleavage leaves pores in place. Such pores facilitate the sintering of copper particles and cuprous oxide particles under a nitrogen-hydrogen mixture to form a good porous capillary structure.

The method of disposing the cured composite material structure 12 on the sheet metal substrate 10 is to arrange a slurry containing a chemical solvent on the first surface 102 of the sheet metal substrate 10 , and heat and bake to form the cured composite material structure 12 . Wherein, the arrangement may be stencil printing or screen printing or dispensing or coating, so that the slurry can be evenly distributed in the groove structure 104 of the sheet metal substrate 10 . When the sheet metal element containing the cured composite material structure 12 is heated, the polymer in the cured composite material structure 12 can be fixedly adhered to the first surface 102 of the sheet metal substrate 10 after curing. In a specific embodiment, the drying step is performed in a drying environment for 10-60 minutes, and the temperature is between 90-110 degrees Celsius. At this temperature, the organic solvent can be removed, and the heating and drying method can be heated by general hot air or infrared heating.

Please refer to FIG. 3 , which is a schematic diagram of the cured composite structure according to the embodiment of FIG. 2 after sintering. After the sheet metal element with the cured composite structure of the present invention is heated, the polymer 125 in the cured composite structure 12 is cracked and removed, leaving the metal particles 121 and metal oxide particles 123 and pores. After sintering in a hydrogen-containing atmosphere, the metal oxide particles are gradually reduced, and a chain-like metallic copper member 2 is formed due to the nature of the crystal structure. On the other hand, metal particles such as copper particles further form spherical-like metal copper members 3 , and chain-like metal copper members 2 and spherical-like metal copper members 3 are cross-stacked to form three-dimensional porous capillary structures 4 . Depending on the mixing ratio of polymer, metal particles and metal oxide particles in the cured composite structure 12 of the sheet metal element, the pore density and size of the sintered capillary structure can be adjusted.

In detail, when the sheet metal element is heated, the polymer in the cured composite structure is cleaved and removed, leaving behind copper particles and cuprous oxide particles (or copper oxide particles). Next, a higher temperature sintering process is carried out in a hydrogen-containing atmosphere, and the cuprous oxide particles undergo reduction and diffusion reactions to form chain-like copper components that are sintered with each other and sintered with spherical-like copper particles to form interconnected shapes. A three-dimensional porous capillary structure 4 is formed.

Please refer to FIG. 4 . FIG. 4 is a flow chart showing the steps of a manufacturing method of a sheet metal element with a cured composite material structure according to an embodiment of the present invention. As shown in FIG. 4 , the method for fabricating a sheet metal element with a cured composite material structure in this embodiment includes the following steps: Step S1 : providing a sheet metal substrate with a groove structure; Step S2 : providing slurry, the slurry The material is mixed with a plurality of metal particles, a plurality of metal oxide particles, a polymer and an organic solvent; step S3: laying the slurry in the groove structure; step S4: heating and baking the slurry to volatilize the organic solvent, And the metal particles, metal oxide particles and polymers are cured to form a cured composite structure and attached to the groove structure of the sheet metal substrate, so as to facilitate subsequent preservation or production operations. The metal particles may include at least one of copper (Cu) particles and copper alloy (Cu alloy) particles, and the metal oxide particles may be copper oxide (CuO) particles or/and cuprous oxide (Cu ₂ O) particles. The organic solvent may be an alcohol solvent.

In a specific embodiment, the drying step of step S4 is performed in a drying environment for 10-60 minutes, and the temperature is between 90-110 degrees Celsius.

Step S4: During heating and baking, the organic solvent in the slurry is volatilized to form a cured composite material structure. Please refer to FIG. 3 again, after step S4 of the present invention, the cured composite material structure of the present invention can be further heated continuously. During the heating process, the polymer in the cured composite structure is cleaved and removed. After further heating in a hydrogen-containing atmosphere, the copper oxide particles are reduced and diffused into a chain-like copper member, and the copper particles or copper alloy particles form a spherical-like copper member. The chain-shaped copper members and the spherical-like copper members are mutually sintered to form a capillary structure with a porous structure. The size of the spherical copper components is generally larger than the diameter of the chain copper components, and the formation of spherical copper components interspersed and distributed between the chain copper components will effectively improve the capillary force of the porous metal capillary structure.

Please refer to FIG. 5 . FIG. 5 is a schematic diagram illustrating a manufacturing method of the sheet metal element 1 having a cured composite material structure in another embodiment. First, a sheet metal substrate 10 with a trench structure 104 is provided, which can be roughly divided into a first region 5 and a second region 6; then, a first paste 141 and a second paste 142 are provided, the first paste 141 and The second slurry 142 has mixed metal particles 121 , metal oxide particles 123 , polymer 125 and an organic solvent. The difference between the first slurry 141 and the second slurry 142 is that the mixed quantity ratio or the particle size of the metal particles 121 and the metal oxide particles 123 in the two are different. Finally, the first slurry 141 and the second slurry 142 are heated and baked to volatilize the organic solvent. After volatilization, the metal particles 121 , the metal oxide particles 123 and the polymer 125 in the first slurry 141 and the second slurry 142 are cured to form a continuous structure attached to the groove structure on the first surface 102 of the sheet metal substrate 10 104. The first slurry 141 forms the first type substructure 131 . The second slurry 142 forms the second type of substructure 132 . The first type substructure 131 and the second type substructure 132 are continuously joined to form the cured composite structure 12 . Moreover, the first type substructure 131 is located in the first region 5 , and the second type substructure 132 is located in the second region 6 . The first zone 5 serves as the heat absorption zone of the temperature equalizing plate, and the second zone 6 contains the condensation zone of the temperature equalizing plate.

Therefore, in detail, the cured composite structure includes a first-type substructure 131 and a second-type substructure 132 , and the first-type substructure 131 and the second-type substructure 132 are continuous. In a specific embodiment, the first average particle size of the metal particles of the first-type substructure 131 is greater than 25um, the second average particle size of the metal particles of the second-type substructure 132 is less than 25um, and the first average particle size is larger than the second average particle size. 2 Average particle size. Among them, the metal powders of the first type substructure 131 and the second type substructure 132 have the same composition, and both contain metal particles and metal oxide particles. The difference lies in the mixing ratio and particle size of the metal particles and metal oxide particles. Different diameters.

In addition, the supporting manner of the first area 5 and the second area 6 of the sheet metal substrate 10 is not same. Please refer to FIG. 6 . FIG. 6 is a schematic diagram illustrating a sheet metal element 1 having a cured composite material structure according to another embodiment of the present invention. As shown in FIG. 6 , the first area 5 of the sheet metal substrate 10 of the sheet metal element 1 of the present invention further includes a plurality of columnar support structures 1041 , and the second area 6 further includes a long support structure wall 1043 to form in the groove. The long support structure wall 1043 is a long structure formed by extending from one end of the second area 6 to the other end. The columnar support structure 1041 can diffuse the gaseous working fluid, and the long support structure wall 1043 can help the flow speed of the liquid working fluid in the capillary structure, thereby achieving the effect of rapid heat conduction

Referring to FIGS. 5 and 6 again, in an embodiment, the first region 5 of the sheet metal element of the present invention has a heat-absorbing region corresponding to the first type of substructure 131 laid by the cured composite material structure. Similarly, the non-heat-absorbing region of the second region 6 of the sheet metal element of the present invention corresponds to the second-type substructure 132 laid by the cured composite material structure. Wherein, the average particle size of metal particles of the first type substructure 131 of the cured composite material structure of the present invention is larger than that of the second type substructure 132, and the average number of metal particles of the first type substructure 131 is smaller than that of the second type substructure 131. The average number of metal particles of type substructure 132 . When the cured composite structure is further sintered, the metal particles of the first type substructure 131 are sintered to form a first capillary structure, and the metal particles of the second type substructure 132 are sintered to form a second capillary structure. The capillary holes in the first capillary structure are larger than those in the second capillary structure. The effect of the vapor chamber is to produce different vertical vaporization capacity and horizontal liquid transport capacity through two different capillary structures, which improves the liquid and gas circulation of the working fluid in the thin vapor chamber. efficiency, and then achieve rapid heat dissipation.

In summary, the present invention provides a sheet metal element having a cured composite structure and a method of making the same, the polymer of which allows the metal particles to be protected and connected to each other and the cured composite structure to adhere to the sheet metal The substrate avoids flow. In actual manufacturing, It can be effectively preserved for batch production and avoid the possibility of oxidation, deterioration and leakage of metal particles, thereby achieving automatic operation and improving production efficiency. Also, the polymer on the sheet metal element can be easily burned off during subsequent processing and sintering.

Through the detailed description of the preferred embodiments above, it is hoped that the features and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various modifications and equivalent arrangements within the scope of the claimed scope of the present invention. Therefore, the scope of the patentable scope for which the present invention is claimed should be construed in the broadest sense in accordance with the above description so as to encompass all possible modifications and equivalent arrangements.

10: Sheet metal substrate

102: First Surface

12: Curing the composite structure

121: Metal particles

123: Metal oxide particles

125: Polymer

Claims (10)

A sheet metal element with a cured composite material structure, which is applied to the manufacture of a vapor chamber element and its capillary structure, comprising: a sheet metal substrate having a first surface with a trench structure; and A cured composite material structure, attached to the groove structure, further comprising: a metal powder including a plurality of metal particles; a polymer interspersed between the metal particles and covering at least a portion of the surface of the metal particles; Wherein, the metal particles and the polymers of the cured composite material are attached to each other to form a continuous structure. The sheet metal element as described in claim 1, wherein the polymer is used for cracking and removing during heating to form gaps between the metal particles, and the metal powder is used for forming one of the pores during sintering capillary structure. The sheet metal element as described in claim 1, wherein the metal particles comprise at least one of a plurality of copper (Cu) particles and a plurality of copper alloy (Cu alloy) particles. The sheet metal element as described in item 1 of the claimed scope further comprises a metal oxide powder, the metal oxide powder comprises a plurality of metal oxide particles, and the metal oxide particles are dispersed among the metal particles between. The sheet metal element as described in claim 4, wherein the metal oxide particles comprise at least one of a plurality of copper oxide (CuO) particles and a plurality of cuprous oxide (Cu ₂ O) particles. The sheet metal element as described in claim 5, wherein the cuprous oxide powder is an octagonal cubic crystal with an average particle size (D50) of less than 5 microns. The sheet metal element as described in claim 1, wherein the polymers comprise a plurality of plastic polymer materials and a plurality of synthetic fiber materials. The sheet metal element as described in claim 7, wherein the plastic polymer materials are polymethyl methacrylate materials, and the synthetic fiber materials are polyamide fiber materials. A method for manufacturing a sheet metal element with a cured composite material structure, the steps comprising: providing a sheet metal substrate with a trench structure; providing a slurry mixed with a metal powder, a metal oxide powder, a polymer and an organic solvent; placing the slurry in the trench structure; The slurry is heated and baked to volatilize the organic solvent, and the metal powder, the metal oxide powder and the polymer are cured to form a cured composite structure attached to the groove structure of the sheet metal substrate. middle. The method for manufacturing a sheet metal element as described in item 9 of the scope of the application, wherein the polymer powder is used for cracking and removal during heating, so that a gap is formed between the particles of the metal powder and the particles of the metal oxide powder, Thereby, the metal powder and the metal oxide powder are sintered in a hydrogen-containing atmosphere to form a porous capillary structure.

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