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CN119859303A - Out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and processing method and application thereof - Google Patents

Out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and processing method and application thereof Download PDF

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CN119859303A
CN119859303A CN202510183928.6A CN202510183928A CN119859303A CN 119859303 A CN119859303 A CN 119859303A CN 202510183928 A CN202510183928 A CN 202510183928A CN 119859303 A CN119859303 A CN 119859303A
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laser
induced
graphene
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nano structure
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张仕伟
魏宇昕
汤勇
柏晶晶
罗方琼
邱华荣
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South China University of Technology SCUT
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    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors

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Abstract

本发明公开了一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构及其加工方法和应用，属于石墨烯材料技术领域，包括前驱体柔性聚合物薄膜和激光诱导石墨烯，激光诱导石墨烯表面微纳结构呈凸起、凹陷交替出现的类锯齿形结构，凸起由仿生结构组成，凹陷由直立多孔石墨烯结构构成。本发明采用上述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构及其加工方法和应用，所制造的激光诱导石墨烯得益于其表面仿生微纳结构、高润湿性能、高导热率、电导率、优异的柔韧性和良好的化学稳定性可广泛应用于传感器、柔性储能器件、电化学催化、光热转换和强化传热等领域。

The present invention discloses an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and a processing method and application thereof, which belongs to the technical field of graphene materials, including a precursor flexible polymer film and laser-induced graphene, wherein the laser-induced graphene surface micro-nano structure is a zigzag structure with protrusions and depressions alternating, wherein the protrusions are composed of bionic structures, and the depressions are composed of upright porous graphene structures. The present invention adopts the above-mentioned out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and a processing method and application thereof, and the manufactured laser-induced graphene can be widely used in sensors, flexible energy storage devices, electrochemical catalysis, photothermal conversion, and enhanced heat transfer, etc., thanks to its surface bionic micro-nano structure, high wettability, high thermal conductivity, electrical conductivity, excellent flexibility, and good chemical stability.

Description

Out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and processing method and application thereof
Technical Field
The invention relates to the technical field of graphene materials, in particular to an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, a processing method and application thereof.
Background
Surface wettability is an important property of graphene, and its change has a significant effect on the adhesion, conductivity and penetration of the graphene material, which in turn affects the performance of the application device. For example, the change of the wettability of the graphene surface can significantly affect the sensitivity of the sensor, the energy storage performance of the capacitor, the catalytic performance of the catalyst, the evaporation performance of solar evaporation application and the liquid phase heat conduction capability of the graphene adhesion layer, so that the research and regulation of the wettability of the graphene surface are important means for expanding the application scene and enhancing the performance of an application device.
The graphene surface hydrophilic modification method mainly comprises a plasma treatment method, an ultraviolet irradiation method, a vacuum annealing treatment method and the like. Although the method improves the hydrophilia of the graphene surface to a certain extent, the method has the problems that the treatment process is complex, the cost is high, the sample surface cannot reach the superhydrophilic performance, and the method is difficult to apply to mass production.
Disclosure of Invention
The invention aims to provide an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, a processing method and application thereof, and the graphene with the surface bionic micro-nano structure is prepared by processing a flexible polymer film by using out-of-focus laser, so that the process is simple, the cost is low, the surface structure is various and controllable, the prepared graphene has excellent surface wettability and capillary property, and the problems brought by the traditional graphene surface hydrophilic modification method can be solved.
In order to achieve the aim, the invention provides an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, which comprises a precursor flexible polymer film and laser-induced graphene, wherein the laser-induced graphene surface micro-nano structure is of a zigzag structure with protrusions and depressions alternately appearing, the protrusions are composed of bionic structures, and the depressions are composed of upright porous graphene structures.
Preferably, the flexible polymer film comprises one of polyimide, polysulfone, polyethersulfone, polyphenylsulfone, phenolic resin and polyethylene terephthalate.
Preferably, the height of the protrusions on the surface of the laser-induced graphene ranges from 5 to 500 μm, and the distance between adjacent protrusions ranges from 50 to 500 μm.
Preferably, the bionic structure forming the surface protrusion of the laser-induced graphene comprises one of a flocculent bionic structure, a flaky structure and various porous structures.
Preferably, the laser-induced graphene has a porosity of 90-99%.
The processing method of the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure comprises the following steps of:
Cutting a flexible polymer film, fixing the film on a flat substrate by using a fixing device, ensuring the flatness of the film, cleaning the surface of the flexible polymer film, performing oxygen plasma treatment for 5-20min, uniformly coating an activating treatment agent on the surface of the flexible polymer film, and heating and drying the surface of the flexible polymer film;
And secondly, adjusting the relative positions of the substrate and the laser light source to enable the laser beam to be aligned to the to-be-processed part of the surface of the thin film material, adjusting the defocusing distance, setting processing parameters in laser control software, inputting patterns to be engraved in the software, and then performing laser treatment to obtain the laser-induced surface bionic super-hydrophilic micro-nano structured graphene.
Preferably, the flexible polymer film in the first step has a thickness of 25 μm-3mm and is cut into a long square strip sheet with a width of 20-50 mm;
the specific operation of the step of cleaning the surface of the flexible polymer film is that the flexible polymer film is respectively cleaned by ultrasonic waves in absolute ethyl alcohol and deionized water for 5-15min;
The activating treating agent is one of a strong alkali solution and a solution with a surface activating effect, wherein the strong alkali solution comprises a sodium hydroxide solution and a potassium hydroxide solution, and the solution with the surface activating effect comprises a copper chloride solution;
The flexible polymer film is baked and heated by placing the flexible polymer film coated with the activating treatment agent and the substrate on the surface of a heating platform at 40-100 ℃ for 10-30min.
Preferably, in the second step, the laser beam is aligned with the defocusing distance of the part to be processed on the surface of the flexible polymer film4mm;
The wavelength range of the laser beam is one of 9.3-10.6 mu m, 627-740nm, 450-480nm and 1053nm, and the laser intensity range born by the surface of the laser-induced graphene is 3J/cm 2-40J/cm2;
the patterns engraved by the laser comprise various regular and irregular patterns processed by adopting a scanning mode and a vector mode.
The invention also provides an application of the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, which is applied to the fields of sensors, flexible energy storage devices, electrochemical catalysis, photo-thermal conversion and enhanced heat transfer.
Therefore, the invention adopts the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and the processing method and application thereof, and has the following beneficial effects:
(1) The method has the advantages that the surface with the bionic micro-nano structure is manufactured by adopting the flexible polymer film coated with strong alkali through laser processing, so that the surface wettability and capillary performance of the graphene material are greatly improved, the process is simple, the operation is easy, the cost is low, the surface structure is various and controllable, and the large-scale preparation condition can be met;
(2) The prepared flexible polymer bionic super-hydrophilic micro-nano structure can be widely applied to the fields of sensors, flexible energy storage devices, electrochemical catalysis, photo-thermal conversion, enhanced heat transfer and the like;
(3) The prepared flexible polymer film-based laser-induced graphene has strong adaptability, and can be cut or bent into a specific shape according to actual needs to complete work.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a flow chart of a preparation method of an out-of-focus laser induced polymer surface bionic super-hydrophilic graphene micro-nano structure, a processing method thereof and an application embodiment of the invention;
FIG. 2 is a schematic diagram of a bionic super-hydrophilic graphene micro-nano structure on the surface of an out-of-focus laser-induced polymer, a processing method thereof and a polyimide film of an application embodiment for processing to form a graphene microstructure;
FIG. 3 is a schematic diagram of a sample of a graphene microstructure formed by processing a polyimide film of an out-of-focus laser-induced polymer surface biomimetic super-hydrophilic graphene micro-nano structure, a processing method thereof and an application embodiment of the invention;
FIG. 4 is a Raman spectrum diagram of a bionic super-hydrophilic graphene micro-nano structure on the surface of an out-of-focus laser-induced polymer, a processing method thereof and the bionic super-hydrophilic graphene micro-nano structure prepared by application examples;
FIG. 5 is a scanning electron microscope image of a bionic super-hydrophilic graphene micro-nano structure on the surface of an out-of-focus laser-induced polymer, a processing method thereof and the bionic super-hydrophilic graphene micro-nano structure prepared by application examples;
FIG. 6 is a dynamic wetting image of a bionic super-hydrophilic graphene micro-nano structure on the surface of an out-of-focus laser-induced polymer, a processing method thereof and graphene with the bionic super-hydrophilic micro-nano structure prepared by application examples;
Fig. 7 is a capillary climbing image of a bionic super-hydrophilic graphene micro-nano structure on the surface of an out-of-focus laser-induced polymer, a processing method thereof and graphene with the bionic super-hydrophilic micro-nano structure prepared by application examples.
Reference numerals
1. The device comprises a flexible polymer film, a laser-induced graphene, 21 parts of protrusions, 211 parts of bionic structures, 22 parts of depressions, 221 parts of vertical porous graphene structures, 3 parts of an activation treatment agent, 4 parts of laser beams, 5 parts of a substrate.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 2 and 3, the invention provides an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, which comprises a precursor flexible polymer film 1 and laser-induced graphene 2, wherein the micro-nano structure on the surface of the laser-induced graphene 2 is of a zigzag structure with protrusions 21 and depressions 22 alternately appearing, the protrusions 21 consist of bionic structures 211, and the depressions 22 consist of upright porous graphene structures 221.
The flexible polymer film 1 includes one of polyimide, polysulfone, polyethersulfone, polyphenylsulfone, phenolic resin, polyethylene terephthalate, and the like.
The height of the protrusions 21 on the surface of the laser-induced graphene 2 ranges from 5 to 500 μm, and the distance between adjacent protrusions 21 ranges from 50 to 500 μm.
The bionic structure 211 forming the surface protrusions 21 of the laser-induced graphene 2 comprises one of a flocculent bionic structure, a lamellar structure and various porous structures, and the porosity of the laser-induced graphene 2 is 90-99%.
A processing method of an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure comprises the following steps:
Cutting the flexible polymer film 1, fixing the film on a flat substrate 5 by using a fixing device, ensuring the flatness of the film, cleaning the surface of the flexible polymer film 1, performing oxygen plasma treatment for 5-20min, uniformly coating an activation treatment agent 3 on the surface of the flexible polymer film 1, and heating and drying the surface.
The flexible polymer film 1 has a thickness of 25 μm to 3mm and is cut into a long, square-strip-shaped sheet having a width of 20 to 50 mm.
The step of cleaning the surface of the flexible polymer film 1 is specifically carried out by sequentially ultrasonic cleaning the flexible polymer film 1 in absolute ethyl alcohol and deionized water for 5-15min respectively.
The activating treatment agent 3 is one of a strong alkali solution and a solution with a surface activating effect, wherein the strong alkali solution comprises a sodium hydroxide solution and a potassium hydroxide solution, and the solution with the surface activating effect comprises a copper chloride solution;
The flexible polymer film 1 is baked and heated by placing the flexible polymer film 1 coated with the activation treatment agent 3 together with the substrate 5 on the surface of a heating platform at 40-100 ℃ for 10-30min.
And secondly, adjusting the relative positions of the substrate 5 and the laser light source to enable the laser beam 4 to be aligned to the to-be-processed part of the surface of the thin film material, adjusting the defocusing distance, setting processing parameters in laser control software, inputting patterns to be engraved in the software, and then performing laser treatment to obtain the laser-induced surface bionic super-hydrophilic micro-nano structured graphene.
Defocus distance of laser beam 4 when it is directed at the part to be processed on the surface of flexible polymer film 14mm;
The wavelength range of the laser beam 4 is one of 9.3-10.6 mu m, 627-740nm, 450-480nm and 1053nm, and the laser intensity range born by the surface of the laser-induced graphene 2 is 3J/cm 2-40J/cm2.
The patterns engraved by the laser comprise various regular and irregular patterns processed by adopting a scanning mode and a vector mode.
The invention also provides an application of the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, which is applied to the fields of sensors, flexible energy storage devices, electrochemical catalysis, photo-thermal conversion and enhanced heat transfer.
Example 1
In this embodiment, the flexible polymer film 1 is a polyimide film, the laser engraving machine used in this embodiment is a continuous CO 2 laser, the wavelength used in the engraving machine is 9.3 μm, any power within 0-30W can be obtained by adjusting parameters, and the laser engraving machine can be considered to be accurate within a certain error range. Polyimide film is purchased from DuPont company, has a yellowish color, and a specific thickness of 25 μm-3mm, and can be considered accurate within a certain error range.
As shown in fig. 2, the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure comprises a precursor flexible polymer film 1 and laser-induced graphene 2, wherein the micro-nano structure on the surface of the laser-induced graphene 2 is of a zigzag-like structure with protrusions 21 and depressions 22 alternately appearing. As shown in fig. 4, the protrusions 21 are composed of a large number of flocculent biomimetic structures, and the depressions 22 are composed of upstanding porous graphene structures 221. As shown in fig. 5 and 6, the prepared laser-induced graphene 2 has excellent surface wettability and capillary properties.
As shown in fig. 1, the invention also provides a processing method of the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, which comprises the following steps:
The polyimide film was cut into a square sheet having a width of 50mm, and then the film was fixed to the flat substrate 5 using a fixing device in the prior art, and the film was ensured to be flat. And respectively ultrasonically cleaning the polyimide film and the substrate 5 in absolute ethyl alcohol and deionized water for 10min. After the surface of the polyimide film is dried, placing the polyimide film into a plasma cleaner for oxygen plasma treatment for 15min, so that the surface of the polyimide film is more hydrophilic. After the treatment, 200g/L sodium hydroxide solution is uniformly coated on the surface of the polyimide film 1 and is placed on the surface of a heating platform in the prior art, and the polyimide film is heated for 15min at 70 ℃.
The relative position of the substrate 5 and the laser source is adjusted to lead the laser beam 4 to be aligned with the surface to-be-processed part of the film material, and the defocusing distance is adjusted to be 2mm. Drawing a pattern to be processed on an upper computer of a laser engraving machine, setting the laser power to be 4W, the scanning speed to be 100mm/s and the scanning interval to be 150dpi, and carrying out laser engraving on the polyimide film to prepare the laser-induced graphene 2 under different laser intensities.
Example 2
The difference between the embodiment and the embodiment 1 is that the copper chloride solution is coated after the polyimide film is cleaned, and CuO particles are deposited on the surface of the graphene, particularly at the edges of the porous graphene under the photo-thermal condition caused by laser processing, so that the wettability and the capillary performance of the surface of the laser-induced graphene 2 are enhanced.
Fig. 1 is a schematic diagram of the preparation process of the present invention, and it can be seen from the figure that the preparation process is simple and does not require the use of complicated processing techniques. The characteristic peak position of the processed film is basically matched with that of graphene according to the figure 4, which shows that PI is completely converted into the laser-induced graphene, and the laser-induced graphene is in a bionic fibrous root structure in microcosmic view according to the figure 5. Fig. 6 and 7 are diagrams of dynamic surface wetting and capillary climbing processes of the prepared graphene, and the results show that the prepared graphene with the bionic micro-nano structure has excellent surface wettability.
Therefore, the out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, the processing method and the application thereof are adopted, and the manufactured laser-induced graphene is beneficial to the fields of the surface bionic micro-nano structure, high wettability, high thermal conductivity, electrical conductivity, excellent flexibility and good chemical stability, and can be widely applied to the fields of sensors, flexible energy storage devices, electrochemical catalysis, photo-thermal conversion, enhanced heat transfer and the like.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted by the same, and the modified or substituted technical solution may not deviate from the spirit and scope of the technical solution of the present invention.

Claims (9)

1.一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构，其特征在于：包括前驱体柔性聚合物薄膜和激光诱导石墨烯，激光诱导石墨烯表面微纳结构呈凸起、凹陷交替出现的类锯齿形结构，凸起由仿生结构组成，凹陷由直立多孔石墨烯结构构成。1. An out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure, characterized in that it includes a precursor flexible polymer film and laser-induced graphene, the laser-induced graphene surface micro-nano structure is a zigzag structure with protrusions and depressions alternating, the protrusions are composed of bionic structures, and the depressions are composed of upright porous graphene structures. 2.根据权利要求1所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构，其特征在于：柔性聚合物薄膜包括聚酰亚胺、聚砜、聚醚砜、聚苯基砜、酚醛树脂和聚对苯二甲酸乙二醇酯中的一种。2. The out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure according to claim 1, characterized in that the flexible polymer film comprises one of polyimide, polysulfone, polyethersulfone, polyphenylsulfone, phenolic resin and polyethylene terephthalate. 3.根据权利要求1所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构，其特征在于：激光诱导石墨烯表面凸起的高度范围为5-500μm，相邻凸起之间的间距为50-500μm。3. The out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nanostructure according to claim 1, characterized in that the height range of the laser-induced graphene surface protrusions is 5-500 μm, and the spacing between adjacent protrusions is 50-500 μm. 4.根据权利要求1所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构，其特征在于：构成激光诱导石墨烯表面凸起的仿生结构包括絮状仿生结构、片状结构和各类多孔状结构中的一种。4. The out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure according to claim 1 is characterized in that the bionic structure constituting the laser-induced graphene surface protrusions includes one of a flocculent bionic structure, a sheet structure and various porous structures. 5.根据权利要求1所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构，其特征在于：激光诱导石墨烯孔隙率为90-99%。5. The out-of-focus laser-induced polymer surface biomimetic super-hydrophilic graphene micro-nano structure according to claim 1, characterized in that the porosity of the laser-induced graphene is 90-99%. 6.如权利要求1-5任一项所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构的加工方法，其特征在于：包括以下步骤：6. A method for processing an out-of-focus laser-induced polymer surface biomimetic super-hydrophilic graphene micro-nano structure according to any one of claims 1 to 5, characterized in that it comprises the following steps: 步骤一、对柔性聚合物薄膜进行裁剪，使用固定装置将薄膜固定于平整的基板上并保证薄膜平整，对柔性聚合物薄膜表面进行清洁及氧等离子体处理，时间为5-20min，在柔性聚合物薄膜表面均匀涂覆活化处理剂并将其加热烘干；Step 1: Cut the flexible polymer film, fix the film on a flat substrate using a fixing device and ensure that the film is flat, clean the surface of the flexible polymer film and perform oxygen plasma treatment for 5-20 minutes, evenly coat the surface of the flexible polymer film with an activation agent and heat and dry it; 步骤二、调节基板与激光光源的相对位置，使激光束对准薄膜材料表面待加工部位，调整离焦距离，在激光控制软件中，设定加工参数，并在软件中输入所需雕刻的图案，之后进行激光处理，得到激光诱导表面仿生超亲水微纳结构石墨烯。Step 2: adjust the relative position of the substrate and the laser light source, align the laser beam with the surface of the film material to be processed, adjust the defocus distance, set the processing parameters in the laser control software, and input the required engraving pattern into the software, and then perform laser processing to obtain laser-induced surface bionic super-hydrophilic micro-nanostructure graphene. 7.根据权利要求6所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构的加工方法，其特征在于：步骤一中柔性聚合物薄膜的厚度为25μm-3mm，被裁剪成长、宽均为20-50mm的方条形薄片；7. The method for processing an out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure according to claim 6, characterized in that: in step 1, the thickness of the flexible polymer film is 25 μm-3 mm, and is cut into square strips with a length and width of 20-50 mm; 柔性聚合物薄膜表面清洁的步骤具体操作为：将柔性聚合物薄膜依次于无水乙醇、去离子水中分别进行超声波清洗5-15min；The specific operation of the steps of cleaning the surface of the flexible polymer film is as follows: the flexible polymer film is ultrasonically cleaned in anhydrous ethanol and deionized water for 5-15 minutes respectively; 活化处理剂为强碱溶液和起表面活化作用的溶液中的一种；其中强碱溶液包括氢氧化钠溶液、氢氧化钾溶液，起表面活化作用的溶液包括氯化铜溶液；The activation treatment agent is one of a strong alkaline solution and a solution having a surface activation effect; wherein the strong alkaline solution includes a sodium hydroxide solution and a potassium hydroxide solution, and the solution having a surface activation effect includes a cupric chloride solution; 柔性聚合物薄膜烘干加热的具体操作为：将涂覆有活化处理剂的柔性聚合物薄膜连同基板放置于加热平台表面40-100℃加热10-30min。The specific operation of drying and heating the flexible polymer film is: placing the flexible polymer film coated with the activation treatment agent together with the substrate on the surface of the heating platform and heating at 40-100° C. for 10-30 minutes. 8.根据权利要求6所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构的加工方法，其特征在于：步骤二中激光束对准柔性聚合物薄膜表面待加工部位时的离焦距离4mm；8. The method for processing a biomimetic super-hydrophilic graphene micro-nanostructure on a polymer surface induced by an out-of-focus laser according to claim 6, characterized in that: in step 2, the defocus distance when the laser beam is aimed at the part to be processed on the surface of the flexible polymer film is 4mm; 激光束的波长范围为9.3-10.6μm、627-740nm、450-480nm、1053nm中的一种，激光诱导石墨烯表面承受的激光强度范围为3J/cm2-40J/cm2；The wavelength range of the laser beam is one of 9.3-10.6 μm, 627-740 nm, 450-480 nm, and 1053 nm, and the laser intensity range of the laser-induced graphene surface is 3 J/cm 2 -40 J/cm 2 ; 激光雕刻的图案包括采用扫描模式及矢量模式加工所得的各类规则及不规则图形。Laser engraving patterns include various regular and irregular graphics processed using scanning mode and vector mode. 9.一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构的应用，其特征在于：将权利要求1-5任一项所述的一种焦外激光诱导聚合物表面仿生超亲水石墨烯微纳结构应用于传感器、柔性储能器件、电化学催化、光热转换和强化传热领域。9. An application of an out-of-focus laser induced bionic super-hydrophilic graphene micro-nano structure on a polymer surface, characterized in that the out-of-focus laser induced bionic super-hydrophilic graphene micro-nano structure on a polymer surface as described in any one of claims 1 to 5 is applied to the fields of sensors, flexible energy storage devices, electrochemical catalysis, photothermal conversion and enhanced heat transfer.
CN202510183928.6A 2025-02-19 2025-02-19 Out-of-focus laser-induced polymer surface bionic super-hydrophilic graphene micro-nano structure and processing method and application thereof Pending CN119859303A (en)

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