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Preparation method of polyimide conductive paper

A technology of polyimide and polyimide fiber, which is applied in the field of preparation of polyimide conductive paper to achieve good high temperature resistance and good conductivity

Inactive Publication Date: 2016-11-16
JIANGNAN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of preparation method of polyimide conductive paper aiming at the problems existing in existing conductive materials and the technical blank of polyimide conductive paper base material

Method used

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  • Preparation method of polyimide conductive paper

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Effect test

Embodiment 1

[0021] (1) Pretreatment of polyimide fibers: put an appropriate amount of polyimide fibers in a sodium hydroxide solution with a temperature of 20°C and a mass fraction of 20%, adding 0.5 g / L sodium lauryl sulfate , assisted by ultrasonic treatment for 2 min, and the ultrasonic treatment conditions are as follows: the temperature is 20° C., and the ultrasonic frequency is 50 kHz; then, it is washed with deionized water.

[0022] (2) The treated polyimide fiber is used to prepare polyimide fiber base paper by a wet method.

[0023] (3) Configuration of polyimide resin solution: 15 parts of carbon black were added to 65 parts of N,N-dimethylacetamide, and ultrasonically treated at 20° C. and 30 kHz for 2 hours. Then, 20 parts of nano-silver powder was added, stirred for 5 minutes, and then ultrasonically treated at 50° C. and 20 kHz for 2 hours. Disperse carbon black and silver powder evenly in N,N-dimethylacetamide. Use this N,N-dimethylacetamide solution to configure a polyi...

Embodiment 2

[0026] (1) Pretreatment of polyimide fibers: put an appropriate amount of polyimide fibers in a potassium hydroxide solution with a temperature of 40°C and a mass fraction of 10%, adding 0.5g / L sodium lauryl sulfate , assisted by ultrasonic treatment for 5 min, and the ultrasonic treatment conditions are as follows: the temperature is 40° C., and the ultrasonic frequency is 100 kHz; then, it is washed with deionized water.

[0027] (2) The treated polyimide fiber is used to prepare polyimide fiber base paper by a wet method.

[0028] (3) Configuration of polyimide resin solution: Add 10 parts of carbon black to 70 parts of N,N-dimethylformamide, sonicate at 20°C and 50 kHz for 1 hour, then add 20 parts of nano Silver powder, stirred for 10 minutes, and then ultrasonically treated at 40°C and 50 kHz for 15 minutes, so that carbon black and silver powder were uniformly dispersed in N,N-dimethylformamide. Use this N,N-dimethylformamide solution to configure a polyimide resin sol...

Embodiment 3

[0031] (1) Pretreatment of polyimide fibers: put an appropriate amount of polyimide fibers in a sodium hydroxide solution with a temperature of 20°C and a mass fraction of 20%, adding 1g / L sodium lauryl sulfate, Ultrasonic assisted treatment for 8 min, the ultrasonic treatment conditions are as follows: the temperature is 20-60 °C, the ultrasonic frequency is 30 kHz; then, wash with deionized water.

[0032] (2) The treated polyimide fiber is used to prepare polyimide fiber base paper by a wet method.

[0033] (3) Configuration of polyimide resin solution: 20 parts of carbon nanotubes were added to 60 parts of N-methylpyrrolidone, and ultrasonically treated at 30° C. and 50 kHz for 1 hour. Then, 20 parts of nano-nickel powder were added, stirred for 10 minutes, and ultrasonically treated for 10 minutes under the conditions of 30° C. and 20 kHz, so that carbon nanotubes and nickel powder were uniformly dispersed in N-methylpyrrolidone. Use this N-methylpyrrolidone solution to ...

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Abstract

The invention relates to a preparation method of polyimide conductive paper, and belongs to the technical field of high-temperature-resistance and high-conductivity paper base materials. The final product is prepared through the pretreatment of polyimide fiber, the preparation of polyimide fiber crude paper, the configuration of a polyimide resin solution and the preparation of the polyimide conductive paper. The prepared polyimide conductive paper has good conductivity and high temperature resistance, mechanical performance and flexibility and can replace a polyimide conductive thin film and aramid fiber conductive paper to be used for the fields of electromagnetic shielding, electrostatic adsorbing and the like.

Description

technical field [0001] The invention relates to a preparation method of polyimide conductive paper, which belongs to the technical field of high temperature resistant and high conductive paper base materials. Background technique [0002] Conductive materials are widely used as electromagnetic shielding materials and electrostatic adsorption materials for electronic equipment such as communication products, medical instruments, household electronic products and aerospace defense. With the rapid development of science and technology, the application of traditional conductive materials in fields with high environmental requirements has been limited. Polymer-based conductive composites have been widely used due to their simple molding process and corrosion resistance. Polymer-based conductive composites are usually prepared by adding conductive materials (such as carbon materials, metal powders, metal fibers, etc.) to the polymer matrix. Aramid and polyimide have excellent co...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H13/26D21H17/54D21H17/00D21H21/14D06B13/00D06M11/74D06M11/83D06M15/59D06M10/02
CPCD06B13/00D06M10/02D06M11/74D06M11/83D06M15/59D06M2101/30D21H13/26D21H17/00D21H17/54D21H21/14D21H27/00
Inventor 龙柱刘崇崇
Owner JIANGNAN UNIV
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