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CN-121991469-A - Conductive carbon fiber composite material for lightning receptor and preparation method thereof

CN121991469ACN 121991469 ACN121991469 ACN 121991469ACN-121991469-A

Abstract

The invention discloses a conductive carbon fiber composite material for a lightning receptor and a preparation method thereof, which relate to the technical field of carbon fiber composite materials, and the technical scheme is that A1) carbon fiber cloth is immersed in an oxidant, washed by deionized water after reaction, dried to obtain pretreated carbon fiber cloth, A2) immersing the pretreated carbon fiber cloth into the presoaked resin, wherein the mass ratio of the pretreated carbon fiber cloth to the presoaked resin is 1:1-1:3, so that the resin uniformly permeates into carbon fiber gaps, and curing the resin through control of pressure, temperature and time to form the conductive carbon fiber composite material. The invention has the beneficial effects that the modified copper nano particles, the carbon nano tubes, the polyethylene dithiophene and the polypyrrole with excellent conductive performance are added into the composite material, so that the composite material has better conductivity, and can more effectively receive and transmit current, thereby improving the performance of the lightning receptor.

Inventors

  • QI JINGJING
  • LI JIANING
  • LIU FUXING
  • ZHANG JIDONG
  • LI XIANMEI
  • WANG KAIYONG
  • ZHANG LE
  • HOU ZENGPENG
  • ZHUO XIAO

Assignees

  • 中国石油化工股份有限公司
  • 中国石油化工股份有限公司胜利油田分公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (10)

  1. 1. A conductive carbon fiber composite for a lightning receptor, the conductive carbon fiber composite comprising the steps of: A1 Immersing the carbon fiber cloth in an oxidant, washing with deionized water after the reaction, drying to obtain the pretreated carbon fiber cloth, A2 Immersing the pretreated carbon fiber cloth into the presoaked resin to uniformly infiltrate the resin into the gaps of the carbon fibers, and curing the resin by controlling the pressure, the temperature and the time to form the conductive carbon fiber composite material.
  2. 2. The conductive carbon fiber composite of claim 1, wherein the mass ratio of the pre-treated carbon fiber cloth to the pre-impregnated resin is 1:1-1:3. The preparation method of the prepreg resin comprises the following steps: b1 Dissolving polyethylene dithiophene and polypyrrole in N-methyl pyrrolidone to form a resin solution, B2 Adding the composite conductive filler to the resin solution, B3 B 2) uniformly dispersing the filler in the resin by mechanical stirring and ultrasonic dispersion, wherein the stirring speed is 500-1000rpm, and the time is 0.5-2 hours.
  3. 3. The conductive carbon fiber composite material according to claim 2, wherein the mass ratio of the polyethylene dithiophene to the polypyrrole to the composite conductive filler is 1:1 (2-3), and the solid content is 30% -50%; The preparation method of the composite conductive filler comprises the following steps of mixing and stirring the modified copper nano particles and the carbon nano tubes, wherein the mass ratio is 1 (1-4), the stirring time is 0.5-2 hours, and the stirring speed is 500-1000rpm.
  4. 4. The conductive carbon fiber composite of claim 3, wherein the method of preparing the modified copper nanoparticles comprises the steps of: a1 Dispersing copper nano particles in ethanol to obtain a dispersion liquid with the concentration of 0.02g/mL-0.10g/mL, A2 Adding 3-aminopropyl trimethoxysilane to the dispersion of a 1), wherein the mass ratio of the 3-aminopropyl trimethoxysilane to the copper nanoparticles is (0.1-0.5): 1, A3 Reacting the mixture of a 2) at 60-80 ℃ for 1-2 hours; a4 The reaction mass of a 3) is separated from the modified copper nanoparticles in 5 to 15 minutes using a centrifuge at 4000 to 6000rpm, and then dried at 50 to 70℃for 12 to 36 hours.
  5. 5. The conductive carbon fiber composite of any one of claims 1 to 4, wherein the curing temperature in A2) is 100 to 200 ℃, the pressure is 0.1 to 1MPa, the curing time is 1 to 3 hours, the oxidizing agent in A1) is hydrogen peroxide, the reaction temperature is 40 to 60 ℃, the reaction time is 1 to 2 hours, and the drying is performed in an oven at 60 to 80 ℃.
  6. 6. The preparation method of the conductive carbon fiber composite material for the lightning receptor is characterized by comprising the following steps of: c1 Dispersing copper nano-particles in ethanol to obtain a dispersion liquid, then adding 3-aminopropyl trimethoxysilane into the dispersion liquid, separating the copper nano-particles by a centrifugal machine, and drying to obtain modified copper nano-particles; c2 Mixing and stirring the modified copper nano particles and the carbon nano tubes to obtain a composite conductive filler; c3 Dissolving polyethylene dithiophene and polypyrrole in N-methyl pyrrolidone to form a resin solution, adding the composite conductive filler into the resin solution, and uniformly dispersing the filler in the resin through mechanical stirring and ultrasonic dispersion; c4 Immersing the carbon fiber cloth in hydrogen peroxide, washing with deionized water after the reaction, and drying to obtain pretreated carbon fiber cloth; c5 Immersing the pretreated carbon fiber cloth into the presoaked resin to uniformly infiltrate the resin into the gaps of the carbon fibers, and curing the resin by controlling the pressure, the temperature and the time to form the carbon fiber composite material.
  7. 7. The method for preparing a conductive carbon fiber composite according to claim 6, wherein the concentration of the dispersion in C1) is 0.02g/mL to 0.10g/mL, the mass ratio of 3-aminopropyl trimethoxysilane to copper nanoparticles is (0.1 to 0.5): 1, the reaction temperature is 60 to 80 ℃, the reaction time is 1 to 2 hours, the centrifuge is 4000 to 6000rpm, the time is 5 to 15 minutes, and the drying temperature is 50 to 70 ℃ and the time is 12 to 36 hours.
  8. 8. The method for preparing a conductive carbon fiber composite material according to claim 6, wherein the mass ratio of the modified copper nanoparticles to the carbon nanotubes mixed and stirred in c 2) is 1 (1-4), the stirring time is 0.5-2 hours, and the stirring speed is 500-1000rpm.
  9. 9. The method for preparing the conductive carbon fiber composite material according to claim 6, wherein the mass ratio of the polyethylene dithiophene to the polypyrrole to the composite conductive filler in C3) is 1:1 (2-3), the solid content is 30% -50%, the stirring speed is 500-1000rpm, the time is 0.5-2 hours, the reaction temperature in C4) is 40-60 ℃, the reaction time is 1-2 hours, and the drying is performed in an oven at 60-80 ℃.
  10. 10. The method for producing a conductive carbon fiber composite material according to claim 6, wherein the curing temperature in C5) is 100-200 ℃, the pressure is 0.1-1MPa, the curing time is 1-3 hours, and the mass ratio of the pretreated carbon fiber cloth to the prepreg resin is 1:1-1:3.

Description

Conductive carbon fiber composite material for lightning receptor and preparation method thereof Technical Field The invention relates to the technical field of carbon fiber composite materials, in particular to a conductive carbon fiber composite material for a lightning receptor and a preparation method thereof. Background With the development of technology and the advancement of industry, the tank lightning receptor plays an important role in protecting oil storage equipment and environmental safety. Because the petroleum products stored in the oil tank are inflammable and explosive, when electromagnetic interference such as thunder exists in the surrounding environment of the oil tank, the oil tank lightning receptor can effectively guide dangerous electromagnetic energy which can cause fire or explosion to the ground, thereby protecting the safety of the oil tank and the surrounding environment. The conventional oil tank lightning receptor is generally made of a metal material, and although the metal lightning receptor has good conductivity, it is easily corroded, has a short life and is high in maintenance cost. Moreover, the metal lightning receptor has a heavy mass and a large amount of work during installation and maintenance. In recent years, carbon fibers have been used for manufacturing lightning receptors because of their excellent properties such as electrical conductivity, mechanical strength, corrosion resistance, and weight reduction. However, the conductivity of the carbon fiber material itself is superior to that of a nonmetallic material, but it is still not comparable to that of a metallic material. Therefore, how to improve the conductivity of the carbon fiber composite and improve its performance in lightning receptor applications has become the focus of current research. However, existing methods for improving the conductivity of carbon fibers generally require surface modification of the carbon fibers by physical or chemical methods, which are complicated in process and high in cost, and may damage the structure of the carbon fibers to affect the mechanical properties thereof. Therefore, a simple, economical and feasible method for improving the conductivity of the carbon fiber composite material is developed, and the method has important practical application value. Disclosure of Invention In order to solve the problems, the invention provides a conductive carbon fiber composite material for a lightning receptor and a preparation method thereof, and the preparation process and the material composition of the composite material are improved to improve the conductivity of the carbon fiber composite material, so that the carbon fiber composite material has better performance in the application of the lightning receptor. In order to achieve the above object, the present invention provides a conductive carbon fiber composite material for a lightning receptor, which is made by the following steps: A1 Immersing the carbon fiber cloth in an oxidant, washing with deionized water after the reaction, drying to obtain the pretreated carbon fiber cloth, A2 Immersing the pretreated carbon fiber cloth into the presoaked resin, wherein the mass ratio of the pretreated carbon fiber cloth to the presoaked resin is 1:1-1:3, so that the resin is uniformly permeated into carbon fiber gaps, curing the resin by controlling the pressure, the temperature and the time to form the conductive carbon fiber composite material, The preparation method of the prepreg resin comprises the following steps: b1 Dissolving polyethylene dithiophene and polypyrrole in N-methyl pyrrolidone to form a resin solution, B2 Adding the composite conductive filler to the resin solution, B3 B 2) uniformly dispersing the filler in the resin by mechanical stirring and ultrasonic dispersion, wherein the stirring speed is 500-1000rpm, and the time is 0.5-2 hours. The mass ratio of the polyethylene dithiophene to the polypyrrole to the composite conductive filler is 1:1 (2-3), the solid content is 30-50%, The preparation method of the composite conductive filler comprises the following steps of mixing and stirring the modified copper nano particles and the carbon nano tubes, wherein the mass ratio is 1 (1-4), the stirring time is 0.5-2 hours, and the stirring speed is 500-1000rpm. The preparation method of the modified copper nano-particles comprises the following steps: a1 Dispersing copper nano particles in ethanol to obtain a dispersion liquid with the concentration of 0.02g/mL-0.10g/mL, A2 Adding 3-aminopropyl trimethoxysilane to the dispersion of a 1), wherein the mass ratio of the 3-aminopropyl trimethoxysilane to the copper nanoparticles is (0.1-0.5): 1, A3 Reacting the mixture of a 2) at 60-80 ℃ for 1-2 hours; a4 The reaction mass of a 3) is separated from the modified copper nanoparticles in 5 to 15 minutes using a centrifuge at 4000 to 6000rpm, and then dried at 50 to 70℃for 12 to 36 hours. A2 The curing temperature is 100-200