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A polymer of carbon nanotube composite polyimide resin and its preparation and application

A technology of compounding polyimide and carbon nanotubes, which is applied in the field of polymer materials, can solve problems such as unsatisfactory comprehensive performance and cumbersome preparation, and achieve good market promotion value, good component dispersion, and strong conductive connectivity. Effect

Active Publication Date: 2020-08-07
JIANGSU YABAO INSULATION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compounding carbon nanotubes and polyimide is a very promising research direction. At present, carbon nanotubes have been widely used in the research of composite doping of polymer materials, and good results have been achieved, but there are still cumbersome preparations, The overall performance is not ideal, so further research and improvement are needed to obtain low-cost, high-quality polymer materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A polymer of carbon nanotube composite polyimide resin, comprising the following percentage components: 0.5% of carbon nanotube, 1% of nitride fine powder, 1.5% of modified kaolin, 0.5% of copper fluorosilicate, polyamide The balance of imide resin.

[0025] Among them, the carbon nanotubes are single-wall carbon nanotubes with a diameter of 0.5-3nm; the nitride powder is any one or more of silicon nitride, zirconium nitride, titanium nitride, zinc nitride, and tantalum nitride. Composition, this embodiment adopts a composition with a mass ratio of 0.5:0.8:0.8:0.3 silicon nitride, zirconium nitride, titanium nitride, and zinc nitride.

[0026] The preparation steps of the modified kaolin are as follows: first put the kaolin in a ball mill and grind it to a particle size of 0.2-0.3 μm, then take it out, add a titanate coupling agent of 0.5% of the total mass of the kaolin, and then send it into a high-speed mixer Inside, first heat the reaction at 70°C and 2000rpm for 3...

Embodiment 2

[0033] A polymer of carbon nanotube composite polyimide resin, comprising the following percentage components: 1.5% of carbon nanotube, 0.5% of nitride micropowder, 0.5% of modified kaolin, 1.5% of copper fluorosilicate, polyamide The balance of imide resin.

[0034] Among them, the carbon nanotubes are single-wall carbon nanotubes with a diameter of 0.5-3nm; the nitride powder is any one or more of silicon nitride, zirconium nitride, titanium nitride, zinc nitride, and tantalum nitride. Composition, this embodiment adopts zirconium nitride.

[0035] The preparation steps of the modified kaolin are as follows: first put the kaolin in a ball mill and grind it to a particle size of 0.2-0.3 μm, then take it out, add a titanate coupling agent of 1.2% of the total mass of the kaolin to it, and then send it into a high-speed mixer Inside, first heat the reaction at 80°C and 2000rpm for 20min, then raise the temperature to 120°C, stir for 20min at 3000rpm, and finally cool down to 1...

Embodiment 3

[0042] A polymer of carbon nanotube composite polyimide resin, comprising the following percentage components: 3% of carbon nanotube, 2.5% of nitride micropowder, 1% of modified kaolin, 0.5% of copper fluorosilicate, polyamide The balance of imide resin.

[0043]Among them, the carbon nanotubes are single-wall carbon nanotubes with a diameter of 0.5-3nm; the nitride powder is any one or more of silicon nitride, zirconium nitride, titanium nitride, zinc nitride, and tantalum nitride. Composition, this embodiment uses a composition of zirconium nitride and titanium nitride with a mass ratio of 1:1.

[0044] The preparation steps of the modified kaolin are as follows: first put the kaolin in a ball mill and grind it to a particle size of 0.2-0.3 μm, then take it out, add a silane coupling agent of 1.5% of the total mass of the kaolin, and then send it into a high-speed mixer together, First heat the reaction at 80°C and 2000rpm for 10min, then raise the temperature to 110°C, sti...

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Abstract

The invention provides a polymer of carbon nanotube composite polyimide resin as well as preparation and application of the polymer. The polymer is prepared from the following components according tothe percent content: 0.5 to 3 percent of carbon nanotubes, 0.5 to 3 percent of nitride micro-powder, 0 to 2 percent of modified kaolin, 0 to 2 percent of copper fluorosilicate and the balance of polyimide resin. According to the polymer provided by the invention, reasonable formula composition and technology improvement are adopted, and the dispersion and combination property of raw materials is strong, so that a prepared polymer material is uniformly distributed and a space structure is stably crossly linked; the mechanical and electrical properties are effectively improved and the comprehensive quality is remarkably improved; the polymer has market popularization value.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a carbon nanotube composite polyimide resin polymer and its preparation and application. Background technique [0002] Polyimide (PI) refers to a class of polymers containing imide rings on the main chain, among which polymers containing phthalimide structures are the most important. Its temperature resistance is above 400°C, it is resistant to sudden cooling and sudden heat, and its long-term use temperature range is -200-300°C. It has excellent electrical and mechanical properties, excellent chemical corrosion resistance, solvent resistance, and a small thermal expansion coefficient. Good grinding performance. Has been widely used in aviation, aerospace, microelectronics, nano, liquid crystal, separation membrane, laser and other cutting-edge technology fields. However, the volume resistivity of polyimide is as high as 10 15 ~10 17 Ω.cm, it is easy to generate sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/08C08K13/06C08K9/04C08K7/24C08K3/34C08K3/28
CPCB29B7/005C08K3/28C08K3/34C08K3/346C08K7/24C08K9/04C08K13/06C08K2201/001C08K2201/003C08K2201/011C08K2201/014C08L79/08
Inventor 徐伟伟王勇祁晓东姜新陈晨
Owner JIANGSU YABAO INSULATION MATERIAL
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