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A ray-based electret polarization device and polarization method thereof

An electret, ray technology, applied in microstructure devices, manufacturing microstructure devices, processes for producing decorative surface effects, etc. Simple, fast polarizing effects

Active Publication Date: 2016-08-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing classical electret polarization method is corona polarization, which uses the air high-voltage corona discharge mechanism, but the ions generated cannot penetrate the blocked solid medium, and can only polarize the bare electret , and the polarization time is as long as 10 to 30 minutes, so corona polarization cannot polarize the encapsulated electret

Method used

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  • A ray-based electret polarization device and polarization method thereof

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Embodiment Construction

[0027] In the following, the present invention will be further described through embodiments with reference to the accompanying drawings.

[0028] Such as figure 1 As shown, the ray-based electret polarization device of this embodiment includes: a protective box 1, a ray generator, a sample fixing assembly, a support frame 4, a metal film 5, a high-voltage bias power supply 6 and a ray intensity dose pen, and Smart alarm 7; among them, the protective box 1 protective box includes a metal box shell 11 and a plastic insulating material 12 attached to its inner wall; the ray generator includes a ray power supply device 21 arranged outside the protective box and the corresponding The radiation generating device 22 and the radiation irradiating device 23 are connected to the top of the protective box; the sample fixing assembly is set on the bottom of the protective box and faces the radiation generating and irradiating device, including an insulated sample stage pillar 31 and The co...

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Abstract

The invention discloses a ray based electret polarization device and method. The electret polarization device comprises a protective box body, a ray generator, a sample fixing component, a support rack, a metal film and a high voltage bias power supply. A space around the metal film, a to-be-polarized electret sample and a sample platform in a ray covered area is filled with high density plasma. A high voltage bias electric field is formed between the metal film connected with the high voltage end and a conductive sample platform connected with the grounded end. Under the action of the high voltage bias electric field, positive charge and negative charge in the plasma are separated and move toward the opposite directions, so that the charge of specific electric property can be adsorbed on the surface of the to-be-polarized electret sample. The device does not need a vacuum environment, has a simple structure, and is rapid and efficient. The polarization time can be shortened to 10 seconds magnitude from 5-20 minutes of the traditional corona polarization time. The electret in a packaging shell can be polarized rapidly.

Description

Technical field [0001] The invention relates to electret polarization, in particular to a ray-based electret polarization device and a polarization method thereof. Background technique [0002] The electret includes the electret matrix and the polarized charges on its surface. Polarization technology is the only means to achieve electrets to obtain high-density charges. It plays a decisive role in the performance of electret microelectromechanical systems. It is the primary key technology for conducting electret microelectromechanical system research. Experts and scholars at home and abroad have carried out extensive research on electret polarization technology. The existing classic electret polarization method is corona polarization, which uses the mechanism of high-pressure corona discharge in air, but the generated ions cannot penetrate through the blocked solid medium, and can only polarize the bare electret , And the polarization time is as long as 10-30 minutes, so corona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B81C1/00B81B7/02
Inventor 冯跃韩炎晖娄文忠
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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