Electrical isolation device and manufacturing method thereof

A production method and electrical isolation technology are applied in the fields of electrophoresis and chromatographic analysis to achieve the effects of simple method, long life and avoiding short life.

Pending Publication Date: 2017-06-13
临沂通微科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, an electrical isolation device with simple operation, stable reliability, and long service life and its manufacturing technology are urgently needed.

Method used

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  • Electrical isolation device and manufacturing method thereof
  • Electrical isolation device and manufacturing method thereof
  • Electrical isolation device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1, the method comprises the following steps:

[0055] 1. Capillary pretreatment:

[0056] In order to activate the silanol in the capillary, the capillary was first rinsed with deionized water for 30 min, then the capillary was rinsed with 1 M NaOH solution for 3 h, and finally the capillary was rinsed with deionized water for 30 min.

[0057] 2. Installed in the corrosion device:

[0058] Take a 50cm-long pretreated capillary with an inner diameter of 75μm and install it in the corrosion device of the electrical isolation device.

[0059] Three: rust process

[0060] (1) Pour into 2ml, 1% hydrochloric acid;

[0061] (2) Closed corrosion device to avoid acid volatilization and water absorption;

[0062] (3) Corrosion at room temperature for 6 hours;

[0063] (4) Turn on the corrosion device, and rinse the corrosion surface of the capillary with deionized water for 30 minutes;

[0064] (5) Dry in a vacuum oven at 50 degrees.

[0065] Four: Installation ...

Embodiment 2

[0069] The method includes the following steps:

[0070] 1. Capillary pretreatment:

[0071] In order to activate the silanol in the capillary, first rinse the inner wall of the capillary with demethanol for 20 minutes, rinse the capillary with deionized water for 10 minutes, then rinse the capillary with 1M NaOH solution for 3 hours, and finally rinse the capillary with deionized water for 30 minutes.

[0072] 2. Installed in the corrosion device:

[0073] Take a 50cm-long pretreated capillary with an inner diameter of 75μm and install it in the corrosion device of the electrical isolation device.

[0074] Three: rust process

[0075] (1) pour into 2ml, 5% sulfuric acid;

[0076] (2) Closed corrosion device to avoid acid volatilization and water absorption;

[0077] (3) Corrosion at room temperature for 3 hours;

[0078] (4) Turn on the corrosion device, and rinse the corrosion surface of the capillary with deionized water for 30 minutes;

[0079] (5) Dry in a vacuum oven...

Embodiment 3

[0083] The method includes the following steps:

[0084] 1. Capillary pretreatment:

[0085] In order to activate the silanol in the capillary, wash the inner wall of the capillary with methanol for 40 minutes, deionized water for 20 minutes, 1M NaOH solution for 3 hours, deionized water for 20 minutes, 1M HCl for 20 minutes, and finally deionized water. Capillary 30min.

[0086] 2. Installed in the corrosion device:

[0087] Take a 60cm-long pretreated 75μm inner diameter capillary and install it in the corrosion device of the electrical isolation device;

[0088] Three: rust process

[0089] (1) pour into 2ml, 3% hydrofluoric acid;

[0090] (2) Closed corrosion device to avoid acid volatilization and water absorption;

[0091] (3) Corrosion at 30°C for 3.5 hours;

[0092] (4) Open the isolation device and rinse the corroded surface of the capillary with deionized water for 50 minutes;

[0093] (5) Dry in a vacuum oven at 70 degrees.

[0094] Four: Installation proces...

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Abstract

The invention discloses an electrical isolation device. The electrical isolation device comprises a support, a solution cavity filled with buffer solution and a capillary tube, wherein a capillary tube slot is formed in the support, the solution cavity is formed in the support, one end of the solution cavity is open, the other end of the solution cavity is closed, an electrode is arranged at the opening, a through hole is also formed in the closed end, one end of the capillary tube is inserted into the capillary tube and passes through from the solution cavity by virtue of the through hole, and the through hole is sealed by arranging a sealing ring. The invention also discloses a manufacturing method of the electrical isolation device. The electrical isolation device and the manufacturing method thereof can be successfully applied to electric separation instruments such as capillary electrophoresis and electrochromatography and have a special power up use; by adopting a rusting method, a porous structure can be formed on the surface of the capillary tube, electricity can be conveniently introduced into a capillary tube separation channel, the defects of tedious process, short life and the like of the traditional manufacturing method are avoided, the manufacturing method disclosed by the invention is simple and stable, and life is long; and the electrical isolation device has the potential to be applied to analysis separation of a more complex sample.

Description

technical field [0001] The invention belongs to the field of electrophoresis and chromatographic analysis, and in particular relates to an electric isolation device and a manufacturing method thereof. Background technique [0002] Capillary electroseparation technology (including electrophoresis, electrochromatography, etc.) is an efficient and rapid micro-separation technology emerging in recent years. Compared with other analytical separation technologies such as HPLC, capillary electroseparation technology has the advantages of high column efficiency, high resolution, high sensitivity and fast analysis speed, etc., and can be applied to various fields such as biomedicine, food safety, and environmental protection. [0003] However, there is an urgent need for an electrical isolation device with simple operation, stable reliability, and long service life and its manufacturing technology. Contents of the invention [0004] The technical problem to be solved by the presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34
CPCG01N1/34
Inventor 阎超刘元元李静孙淑军李亚珍潘直芳
Owner 临沂通微科技有限公司
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