Method for preparing polyvinylidene fluoride conductive plastics

A conductive plastic and electronic control technology, which is applied in the field of polyvinylidene fluoride conductive plastic prepared by excimer laser irradiation, can solve the problems of complex operation, difficult material local conductivity selection processing, etc., and achieve simple operation, good conductive effect, highly reproducible effect

Inactive Publication Date: 2009-07-22
CHENGDU 3D CHANGE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing PVDF conductive plastics by excimer laser irradiation, which overcomes the defects of the traditional method that the operation is complicated and it is not easy to select the local conductivity of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take a piezoelectric plastic PVDF with a thickness of 500 μm to make a sample, fix the sample at the center of the electronically controlled rotary table, set the rotation speed of the electronically controlled rotary table to 10° / s, select the KrF excimer laser with a wavelength of 248nm, and set the pulse frequency 4Hz, adjust the optical path so that the laser spot size irradiated on the sample is 18mm×7mm, the spot is located in the center of the sample, adjust the laser output energy, so that the laser energy density irradiated on the sample is 140mJ / cm 2 , set the number of pulses to 500, rotate the sample turntable, and irradiate with laser light. After the pulse output stops, the irradiation ends.

Embodiment 2

[0028] Take a piezoelectric plastic PVDF with a thickness of 500 μm to make a sample, fix the sample at the center of the electronically controlled rotary table, set the rotation speed of the electronically controlled rotary table to 40° / s, select the KrF excimer laser with a wavelength of 248nm, and set the pulse frequency 4Hz, adjust the optical path so that the laser spot size irradiated on the sample is 17mm×6mm, the spot is located in the center of the sample, adjust the laser output energy, so that the laser energy density irradiated on the sample is 190mJ / cm 2 , set the number of pulses to 150, rotate the sample turntable, and irradiate with laser light. After the pulse output stops, the irradiation ends.

Embodiment 3

[0030] Take a piezoelectric plastic PVDF with a thickness of 500 μm to make a sample, fix the sample at the center of the electronically controlled rotary table, set the rotation speed of the electronically controlled rotary table to 45° / s, select the KrF excimer laser with a wavelength of 248nm, and set the pulse frequency 10Hz, adjust the optical path so that the laser spot size irradiated on the sample is 17mm×6mm, the spot is located in the center of the sample, adjust the laser output energy, so that the laser energy density irradiated on the sample is 190mJ / cm 2 , set the number of pulses to 600, rotate the sample turntable, and irradiate with laser light. After the pulse output stops, the irradiation ends.

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PUM

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Abstract

The invention discloses a method for preparing polyvinylidene fluoride conductive plastic, in particular to a method for preparing polyvinylidene fluoride conductive plastic through excimer laser irradiation. The traditional doping method to prepare PVDF conductive plastics has the disadvantages of complex operation and difficult selection of local conductivity of the material. In the method disclosed by the present invention, KrF laser with a pulse frequency of 4-10 Hz and a wavelength of 248 nm and an ArF laser with a wavelength of 193 nm are used as high-energy radiation sources, and the laser energy density irradiated on the PVDF sample is controlled to be 140 mJ / cm2 to 290 mJ / cm2 cm2, quickly prepare conductive PVDF plastic in the selected processing area of ​​high-insulation plastic PVDF. The invention can realize the phase transition from insulation to conductive material without introducing other impurities, has short preparation time, simple operation, optional processing, strong process controllability and high repeatability.

Description

technical field [0001] The invention relates to a method for preparing polyvinylidene fluoride conductive plastic, in particular to a method for preparing polyvinylidene fluoride conductive plastic through excimer laser irradiation. Background technique [0002] Conductive plastics can be processed at low temperature and produced in a large area. They have the advantages of stretchability, flexibility, low production cost, and good component characteristics. They will have a huge impact on the future electronics and information industries. Plastics are mostly insulators. In recent years, people have devoted themselves to preparing multifunctional conductive plastics through doping, surface treatment, etc., so that the conductivity of plastics can be controlled in the range of semiconductors or conductors, so that they can be used to develop antistatic materials, anti-electromagnetic shielding materials, semiconductor materials and high-conductivity materials. Materials, wid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C71/04C08J3/28C08J7/18B29B13/08
Inventor 蒋毅坚姬亚玲
Owner CHENGDU 3D CHANGE TECH
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