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Method of rapidly generating and controlling polyvinylidene fluoride conducting layer

A polyvinylidene fluoride and conductive layer technology, which is applied in the preparation of conductive polymers and in the field of laser micromachining, can solve the problems of artificial control of non-conductive areas, rapid preparation of conductive layer obstacles, random occurrence of active centers, etc., to avoid time-consuming and energy, fast preparation speed, and controllable conductive area

Inactive Publication Date: 2009-09-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the physical and chemical properties of the material itself, the laser energy density has an upper limit
For the condition of low energy density, the number of pulses currently required is at least 300, so the rapid preparation of conductive layers is hindered
In addition, during the preparation process, the active centers of the conductive layer appear randomly, and it is impossible to artificially control the conductive area.

Method used

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  • Method of rapidly generating and controlling polyvinylidene fluoride conducting layer
  • Method of rapidly generating and controlling polyvinylidene fluoride conducting layer
  • Method of rapidly generating and controlling polyvinylidene fluoride conducting layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] First, in the attached figure 1 In the shown excimer laser mask direct writing optical path system, a circular mask with a diameter of 4mm is selected, and microgrooves are constructed on the surface 7 of the PVDF film. The diameter of the microgrooves is 0.26mm, and the distance between each microgroove is 1cm. Etching 8 microgrooves arranged in a straight line 14, as attached image 3 shown. During the experiment, the energy of laser 1 was 200mJ, the repetition frequency was 4Hz, and each microhole was etched with 30 pulses. Then, the He-Ne laser is used for positioning, the three-dimensional workbench 8 is turned on, the laser 1 is turned on, and the texture of the micro-pattern is automatically completed through the laser control software and the three-dimensional workbench control software.

[0046] The textured sample is placed on the workbench 13 of the excimer laser irradiation optical system, collimated by the He-Ne laser, and the optical path is adjusted so ...

Embodiment 2

[0048] First, in the attached figure 1 In the shown excimer laser mask direct writing optical path system, a circular mask with a diameter of 4mm is selected, and microgrooves are constructed on the surface 7 of the PVDF film. The diameter of the microgrooves is 0.26mm, and the distance between two adjacent microgrooves is 1cm. Graphics, continuous etching three rows and three columns of 9 equally spaced microgrooves 15, as attached Figure 4 shown. During the experiment, the energy of laser 1 was 300mJ, the repetition frequency was 4Hz, and each microhole was etched with 30 pulses. Then, the He-Ne laser is used for positioning, the three-dimensional workbench is turned on, the laser is turned on, and the texture of the micro-pattern is automatically completed through the laser control software and the three-dimensional workbench control software. Turn off the laser and turn off the 3D workbench.

[0049] The textured sample is placed on the workbench 13 of the excimer lase...

Embodiment 3

[0051] First, in the attached figure 1 In the excimer laser mask direct writing optical system shown, a circular mask with a diameter of 4 mm is selected. During the experiment, the energy of laser 1 is 400 mJ, the repetition frequency is 4 Hz, and the table speed is 10 mm / min. Structure microgroove on PVDF film surface 7, width is 0.26mm, and length is the microchannel 16 of 8cm, as attached Figure 5 shown. Then, the He-Ne laser is used for positioning, the three-dimensional workbench is turned on, the laser is turned on, and the texture of the micro-pattern is automatically completed through the laser control software and the three-dimensional workbench control software. Turn off the laser and turn off the 3D workbench.

[0052] The textured sample is placed on the workbench 13 of the excimer laser irradiation optical system, collimated by the He-Ne laser, and the optical path is adjusted so that it has a complete spot shape. Set the output energy of the laser to 300mJ, ...

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Abstract

The invention relates to a method of rapidly generating and controlling a polyvinylidene fluoride conducting layer, belonging to the preparing and laser micro-processing field of conducting polymer. An excimer laser mask direct writing light path system is used for texturing the surface of a sample, and then an excimer laser irradiation light path system is used for modifying the sample after the texturing. Defects are implanted into the surface of the sample. The modifying period is shortened, and simultaneously the conducting region around the defected parts of the modified region which are distributed symmetrically can be controlled due to the introduction of the defects.

Description

technical field [0001] The invention relates to the field of preparation of conductive polymer and laser micromachining. Especially in the process of laser preparation of conductive polyvinylidene fluoride, a method to quickly generate a conductive layer on the surface of polyvinylidene fluoride (PVDF) material and control the conductive area. Background technique [0002] The research on the preparation of conductive polymers by laser began with the first report published by M. Schumann of Rice University in the United States in Applied Physics Letters 1991, 58, 428-430. They used 248nm KrF pulsed laser irradiation to prepare conductive polymers. Polyimide (Kapton, PI) or polybenzimidazole (PBI), under different energy densities, after the number of laser pulses is about 1000, the conductivity changes suddenly, which increases by 15 orders of magnitude to 1-10Ω -1 cm -1 . Subsequently, there were many research results in this field. For example, Ning Dong et al. reported...

Claims

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Application Information

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IPC IPC(8): B29C71/04
Inventor 蒋毅坚刘莹
Owner BEIJING UNIV OF TECH
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