CN106686514A - A three-axis grid-controlled corona polarization device - Google Patents

Abstract

The invention discloses a three-axis grid-controlled corona polarization device. The grid is placed under the polarization probe clamped by the polarization probe clamp, and the high-voltage power supply and the low-voltage power supply are placed on the upper layer of the bracket; the negative pole of the power supply and the probe The negative pole of the low-voltage power supply is connected to the grid; the positive pole of the high-voltage power supply is connected to the material to be polarized on the platform below the grid. The polarized probe fixture is set on a three-axis slide table; the three-axis slide table adopts three sets of screw rod slider mechanisms that are perpendicular to each other, and drives the polarized probe fixture in the three directions of XYZ for controllable move. The position of the probe can be adjusted according to the material, shape, size and thickness of the material to be polarized.

Description

A three-axis grid-controlled corona polarization device

Technical field:

The invention relates to a preparation device for a polymer functional material, especially an electret polarization device.

Background technique:

Electret refers to a dielectric material that can store space charge and dipole charge for a long time. It is widely used in flexible thin film sensors, flexible field effect transistors, acoustic and electric devices, wearable devices and other fields. Insulating polymers can be used as electret in principle. body material. There are many polarization methods of electret, such as thermal polarization method, corona polarization method, and electron beam irradiation charging method, among which corona polarization method is the most widely used corona polarization method at present. The method of injecting charge into the dielectric under the action of a strong electric field, compared with other methods, the corona polarization device is simple, easy to operate, the charge can be evenly distributed on the surface of the electret, and the ferroelectric performance of the electret is good. However, the position of the polarization probe of the existing gate-controlled corona polarization device cannot be adjusted accurately, and the position of the polarization probe cannot be adjusted according to the material, shape, size, and thickness of the polarized material, reflecting the effect of the pole spacing on the polarization of the electret. The impact of the effect.

Contents of the invention

In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a novel three-axis grid-controlled corona polarizer, which overcomes the above shortcomings of the prior art, to precisely control the displacement and pole spacing of the probe, adjust The pole spacing with the best polarization effect.

The object of the present invention is achieved by the following means.

A three-axis grid-controlled corona polarization device, the grid is placed under the polarization probe clamped by the polarization probe fixture, the high-voltage power supply and the low-voltage power supply are placed on the upper layer of the bracket; the negative pole of the power supply is connected to the probe; the low-voltage The negative pole of the power supply is connected to the grid; the positive pole of the high-voltage power supply is connected to the material to be polarized on the platform below the grid, and the polarized probe fixture is arranged on a three-axis slide table; the three-axis slide table Three sets of screw slider mechanisms perpendicular to each other are used to drive the polarized probe fixture for controllable movement in the three directions of XYZ

Further, the platform is an electric heating platform.

The three-axis grid-controlled corona polarization device of the present invention is adopted, and the three-axis sliding table adopts three sets of screw rod slider mechanisms that are perpendicular to each other, and drives the polarized probe fixture for controllable movement in the three directions of XYZ. The probe can adjust the position according to the material, shape, size and thickness of the material to be polarized to change the physical properties of the electret material and the charge distribution of the material, thereby improving the charge life of the electret.

Description of drawings

Fig. 1 is the front view of the three-axis grid-controlled corona polarization device of the present invention.

Fig. 2 is a partial schematic diagram of the three-axis grid-controlled corona polarization device of the present invention.

In the figure: 1. Bracket, 2. High-voltage power supply, 3. Low-voltage power supply, 4. Three-axis slide table, 5. Polarization probe fixture, 6. Polarization probe, 7. Grid support, 8. Grid, 9, stainless steel bracket, 10, platform.

detailed description

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1 and Figure 2, in the three-axis grid-controlled corona polarization device of the present invention, the grid is placed under the polarization probe held by the polarization probe fixture, and the high-voltage power supply and low-voltage power supply are placed on the upper layer of the bracket The negative pole of the power supply is connected to the probe; the negative pole of the low-voltage power supply is connected to the grid; the positive pole of the high-voltage power supply is connected to the material to be polarized on the platform below the grid, and it is characterized in that the polarized probe The fixture is arranged on a three-axis slide table; the three-axis slide table adopts three sets of screw rod slider mechanisms perpendicular to each other, and drives the polarized probe fixture to move controllably in three directions of XYZ.

Among them, the bracket is made of acrylic plate, aluminum alloy, and stainless steel; the three-axis sliding table drives the probe to move controllably in the three directions of XYZ, with high control precision; the polarization component includes the probe clamping device, polarization probe, grid The probe clamping device is fixed on the Z-axis of the three-axis slide table, the position of the polarization probe is adjustable, and the grid is placed under the polarization probe; the high-voltage power supply is located on the upper layer of the bracket, and the negative pole of the power supply is connected to the probe ; The negative pole of the low-voltage power supply is connected to the grid; the platform is placed under the grid, and the material to be polarized is placed on the platform. The platform can adopt electric heating structure

The bracket is made of acrylic plate, aluminum alloy, and stainless steel, which not only supports and fixes, but also has the effect of isolation and protection, preventing personnel from accidentally touching high voltage and causing life-threatening.

The movable distance of the X-axis screw slider of the three-axis slide table is 200mm, the movable distance of the Y-axis screw slider is 200mm, and the movable distance of the Z-axis screw slider is 100mm. The three-axis slide table realizes the polarization detection. The movement of the needle in the direction of three-dimensional space enables the operator to adjust the position of the polarizing probe according to the material, shape, size and position of the material to be polarized, which facilitates the operation.

The grid is made of acrylic frame and copper mesh, which can make the space electric field evenly distributed and control the surface charge distribution of the sample.

Carrying and heating the electret material on the platform can change the physical properties of the electret material, improve the charge storage capacity of the material, and enhance the stability of the electret device.

The above-mentioned embodiment is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned embodiment, and any other changes, modifications, substitutions, combinations, Simplifications should be equivalent replacement methods, and all are included in the protection scope of the present invention.

Claims (4)

1. A three-axis grid-controlled corona polarization device, the grid is placed under the polarization probe clamped by the polarization probe fixture, the high-voltage power supply and the low-voltage power supply are placed on the upper layer of the bracket; the negative pole of the power supply is connected to the probe The negative pole of the low-voltage power supply is connected to the grid; the positive pole of the high-voltage power supply is connected to the material to be polarized on the platform below the grid, and it is characterized in that the polarized probe fixture is arranged on a three-axis slide table Above; the three-axis slide table adopts three sets of screw rod slider mechanisms perpendicular to each other, and drives the polarized probe fixture to move controllably in the three directions of XYZ. 2 . The three-axis grid-controlled corona polarization device according to claim 1 , wherein the platform is an electric heating platform. 3 . 3. The three-axis grid-controlled corona polarization device according to claim 1, wherein the movable distance of the X-axis screw slider of the three-axis slide table is 200mm, and the Y-axis screw slider can move The moving distance is 200mm, and the movable distance of the Z-axis screw rod slider is 100mm. 4 . The three-axis grid-controlled corona polarization device according to claim 1 , wherein the high-voltage power supply is a negative-voltage high-voltage power supply, and the adjustment range is -20kV～0V.