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Method for quickly erasing and writing conductive PVDF (Polyvinylidene Fluoride) layer through water film

A polyvinylidene and conductive layer technology is applied in the field of laser irradiation modification technology and conductive polymer material preparation, which can solve problems such as a large number of wastes or substandard products, increase manufacturing cost, waste, etc., and achieve simple operation and quick cleaning. Write, repeat and control effects

Inactive Publication Date: 2011-11-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these excimer laser processing methods have achieved the preparation of conductive layers on the surface of various polymer materials, a large amount of waste or substandard products have been generated during the preparation process, which has increased the manufacturing cost and caused great waste. In addition, for the conductive layer Research on local or large-area removal methods is still blank

Method used

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  • Method for quickly erasing and writing conductive PVDF (Polyvinylidene Fluoride) layer through water film
  • Method for quickly erasing and writing conductive PVDF (Polyvinylidene Fluoride) layer through water film
  • Method for quickly erasing and writing conductive PVDF (Polyvinylidene Fluoride) layer through water film

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Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 1 As shown, in the excimer laser irradiation system, the beam emitted by the KrF excimer laser 1 passes through the first-stage fly eye 2, the second-stage fly-eye lens 3, the first-stage objective lens 4, the second-stage objective lens 5, and the reflector 6 in turn. The direct radiation cleaning operation is performed on the conductive layer 8 of the sample 9 under the water film 10 . In addition, the conductive layer of the sample selected in the embodiment is about 1 cm×1 cm.

[0023] This embodiment mainly operates according to the following steps:

[0024] Step 1: Adjust the spot size and position through the red laser. The area of ​​the spot in the cleaning process must not be smaller than the area of ​​the conductive layer. The recording spot area is 1.2cm×1.2cm.

[0025] Step 2: Attach pure water droplets to and cover the entire conductive layer through a glue dropper to form a water film with a thickness of about 0.2cm. At this time, the t...

Embodiment 2

[0030] Embodiment 2 uses the same device and method as Embodiment 1, except that the laser output energy set in the third step of the operation step is 300 mJ. The surface microstructure of the material after removing the conductive layer is as follows: Figure 5 Shown: With the decrease of the output energy, the clearing time increases slightly, which is about 30 seconds; compared with Example 1, there are traces of the three-dimensional network structure, and the clearing effect is slightly weakened.

Embodiment 3

[0032] Embodiment 3 adopts the same device and method as Embodiment 1, except that the laser output energy set in the third step of the operation step is 200 mJ. The surface microstructure of the material after removing the conductive layer is as follows: Figure 6 Shown: With the decrease of the output energy, the clearing time increases slightly, which is about 40 seconds; compared with Example 1, the three-dimensional network structure leaves traces, and the clearing effect is slightly weakened.

[0033] All in all, the laser vaporization process using water film effectively removes the conductive layer of conductive polyvinylidene fluoride, and also realizes the reconstruction function of the conductive layer, which improves the laser preparation process of conductive polyvinylidene fluoride.

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Abstract

The invention provides a method for quickly erasing and writing a conductive PVDF (Polyvinylidene Fluoride) layer through a water film. The method comprises the following steps of: covering the water film above a conductive layer to be erased, generating a high-temperature high-pressure environment in an active region by utilizing an excimer laser irradiation technology, and erasing the conductive layer due to the breakage of the conductive layer in a water film laser vaporization process. According to the method for quickly erasing and writing the conductive PVDF layer through the water film, disclosed by the invention, the surface of a reduced material can be quickly modified again through laser irradiation, thus the material is recycled.

Description

technical field [0001] The invention relates to the field of laser irradiation modification technology and preparation of conductive polymer materials, in particular to a method for rapidly erasing and writing a conductive layer on the surface of polyvinylidene fluoride in the process of preparing conductive polyvinylidene fluoride by excimer laser. Background technique [0002] Excimer laser has the characteristics of short wavelength, high energy, no pollution, strong automation and simple operation, and has a wide range of applications in material modification, such as laser lithography, laser deposition and laser marking. By controlling the laser energy flux density, the laser energy can be effectively injected into the surface layer of the material, which can endow the material with more new properties and functions without affecting the internal properties of the material. Among them, the use of excimer lasers to induce changes in the surface electrical properties of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C71/04
Inventor 刘莹蒋毅坚
Owner BEIJING UNIV OF TECH
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