Device and method for eliminating static electricity on microsphere surface

A microsphere and electrostatic technology, applied in electrostatic, electrical components, plasma and other directions, can solve the problems of surface oxidation of microspheres, introduction of impurities, etc., and achieve the effect of comprehensive coating, avoiding oxidation and convenient operation.

Pending Publication Date: 2017-05-24
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a device for eliminating static electricity on the surface of microspheres, which solves the problem that the existing

Method used

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  • Device and method for eliminating static electricity on microsphere surface
  • Device and method for eliminating static electricity on microsphere surface

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method for eliminating the static electricity on the surface of the microspheres, firstly, configure an appropriate amount of microsphere samples to be processed in the tray 9, and place the tray 9 in the quartz resonant cavity 1. The relative positions of the tray 9 and the antenna 10 are adjusted so that the tray 9 is in the center of the plasma source area.

[0030] Secondly, vacuumize the quartz resonant cavity 1 through the vacuum pumping port 12, so that the air pressure in the quartz resonant cavity 1 is evacuated to 1×10 -3 Pa below, to ensure that the number of oxygen atoms contained in the quartz resonator 1 is sufficiently small. Then, the discharge gas, specifically hydrogen gas, is injected into the quartz resonant cavity 1 through the gas inlet 6, and the flow rate of the hydrogen gas injection is 10 ml / min. The air pressure in the quartz resonant cavity 1 is measured by the resistance unit 3 and the ionization unit 4 , and the air pressure in the qua...

Embodiment 2

[0034] The operation steps of this embodiment are basically the same as those of Embodiment 1, except that helium is used as the discharge gas. The advantage of using helium discharge is that the plasma generated by helium is chemically inert and will not have any chemical reaction with the microsphere sample to be treated.

Embodiment 3

[0036] The method for eliminating the static electricity on the surface of the microspheres, firstly, configure an appropriate amount of microsphere samples to be processed in the tray 9, and place the tray 9 in the quartz resonant cavity 1. The relative positions of the tray 9 and the antenna 10 are adjusted so that the tray 9 is in the center of the plasma source area.

[0037] Secondly, vacuumize the quartz resonant cavity 1 through the vacuum pumping port 12, so that the air pressure in the quartz resonant cavity 1 is evacuated to 1×10 -3 Below Pa. Then, the discharge gas, specifically argon gas, is injected into the quartz resonant cavity 1 through the gas inlet 6 at a flow rate of 20 ml / min. The air pressure in the quartz resonant cavity 1 is measured by the resistance unit 3 and the ionization unit 4 , and the air pressure in the quartz resonant cavity 1 is adjusted to 40Pa by using the gate valve 13 .

[0038] Again, when the air pressure in the quartz resonant cavit...

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Abstract

The invention discloses a device and a method for eliminating static electricity on a microsphere surface, solving the problem that a current device for eliminating static electricity on the microsphere surface is operated in the atmosphere and can draw impurities to lead the microsphere surface to be oxidized. The technical scheme is as follows: the device for eliminating the static electricity on the microsphere surface comprises a quartz resonance cavity and an antenna coiled on the outer side of the quartz resonance cavity, and the antenna is of an incense coil type and is connected with a radio-frequency matching network; the outer side of the quartz resonance cavity is provided with a resistance unit and an ionization unit for vacuum measurement as well as a vacuum air extraction opening and an air inlet, and the quartz resonance cavity is further provided with an earthing position. According to the method for eliminating the static electricity on the microsphere surface, firstly, a microsphere is configured in a tray, and the tray is arranged in the quartz resonance cavity; secondly, vacuumizing is carried out on the quartz resonance cavity, and then electric discharge gas is introduced; and thirdly, radio-frequency power supply is started, the radio-frequency matching network supplies radio-frequency signals to the antenna so as to generate plasma, and the ions and electrons in the plasma respectively neutralize with negative charges and positive charges on the microsphere surface, so that the purpose of eliminating the static electricity is achieved.

Description

technical field [0001] The invention relates to a device and method for eliminating static electricity on the surface of microspheres. Background technique [0002] In inertial confinement fusion (ICF) scientific research, microspheres with GDP (CH polymer) coating have been favored due to their high strength, good surface finish, high infrared transmittance, etc. Selected as the preferred deuterium-tritium fuel container and ablation layer in laser ICF physics experiments. In the preparation process of GDP microspheres, in order to obtain GDP microspheres with high surface finish and uniform coating thickness, during the CH polymer coating process, it is necessary to make the microspheres roll randomly in the plasma glow, that is, through a stepping motor The inclined microsphere tray is driven to rotate, and the microspheres are placed in the tray to make them roll randomly under the combined action of gravity and friction. This has been realized in the patent whose publ...

Claims

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Application Information

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IPC IPC(8): H05H1/46H05F3/04
CPCH05F3/04H05H1/46H05H1/4645
Inventor 张玲陈果何小珊何智兵王涛刘艳松李俊
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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