Preparing method of carbon fiber/polyaniline wave-absorbing electromagnetic shielding composite

Abstract

The invention discloses a preparing method of a carbon fiber / polyaniline wave-absorbing electromagnetic shielding composite. The preparing method includes the following steps that 1, oiling agents and impurities on the surface of a fiber product are removed, and moisture on the surface is removed for use; 2, the carbon fibers obtained in the step 1 are taken and pasted on stainless steel foil with a conductive silver adhesive to serve as an anode, Cu foil serves as an cathode, an aqueous solution with aniline and a dopant mixed is selected as an electrolytic solution, a polyaniline film is electropolymerized on the surface of the carbon fibers through the electropolymerization method, and a carbon fiber / polyaniline composite is obtained; 3, the carbon fiber / polyaniline composite obtained in the step 2 is taken to serve as electromagnetic shielding bi-component functional filler, epoxy resin is selected as a resin matrix, and the carbon fiber / polyaniline wave-absorbing electromagnetic shielding composite is obtained through the extrusion forming technology. The carbon fiber / polyaniline composite prepared through the preparing method has the advantages of high electric conductivity of the carbon fibers, high electric conductivity of polyaniline and double-loss structure wave absorbing, and can be applied to the fields of electromagnetic shielding and the like.

Description

technical field

[0001] The invention belongs to the technical field of carbon fiber and electromagnetic shielding, in particular to a carbon fiber / polyaniline composite material, in particular to a preparation method of a carbon fiber / polyaniline wave-absorbing electromagnetic shielding composite material. Background technique

[0002] The 21st century is the era of interaction between human beings and the Internet. With the rapid development of the electronics industry, the application of artificial intelligence, and the arrival of the Internet + era, the application and popularization of various mobile digital devices, office equipment, household appliances, and instrumentation electronic products have brought great benefits to people's lives. A lot of convenience and experience. But it also brings electromagnetic wave radiation troubles to people, seriously endangering people's health problems. At the same time, it will also cause interference between electronic componen...

Examples

Embodiment 1

[0028] (1) Carbon fiber (felt) pretreatment:

[0029] Carbon fibers soaked to a concentration of 5% H 2 SO 4 In the solution, soak for 30 minutes, wash with distilled water for 3 times, and dry in an oven at 80°C for 30 minutes.

[0030] (2) Carbon fiber / polyaniline composite material preparation:

[0031] a. Take the carbon fiber prepared in step (1), apply it on the foil with conductive silver glue, dry it on a hot table at 60°C, and set it aside.

[0032] b. Add aniline to the prepared 1M H 2 SO 4 solution, made into 0.1M aniline solution (1MH 2 SO 4 ),stand-by.

[0033] c, the carbon fiber prepared in step (2) a is the anode, the Cu foil is the cathode, and the 0.1M aniline solution (1M H 2 SO 4 ) is the electrolyte, cyclic voltammetry (CV) electropolymerized polyaniline, the scanning voltage is -0.1-1.0V, the scanning speed is 100mV / s, and the scanning cycle is 50 times until the cycle diagram is stable. stand-by.

[0034] (3) Carbon fiber / polyaniline composite...

Embodiment 2

[0037] (1) Carbon fiber (felt) pretreatment:

[0038] Carbon fibers soaked to a concentration of 5% H 2 SO 4 In the solution, soak for 30 minutes, wash with distilled water for 3 times, and dry in an oven at 80°C for 30 minutes.

[0039] (2) Carbon fiber / polyaniline composite material preparation:

[0040] a. Take the carbon fiber prepared in step (1), apply it on the foil with conductive silver glue, dry it on a hot table at 60°C, and set it aside.

[0041] b. Add aniline to the prepared 1M H 2 SO 4 solution, made into 0.2M aniline solution (1MH 2 SO 4 ),stand-by.

[0042] c, the carbon fiber prepared in step (2) a is the anode, the Cu foil is the cathode, and the 0.2M aniline solution (1M H 2 SO 4 ) as the electrolyte, cyclic voltammetry (CV) electropolymerized polyaniline, the scanning voltage is -0.1–1.0V, the scanning speed is 50mV / s, and the scanning cycle is 50 times until the cycle diagram is stable. stand-by.

[0043] (3) Carbon fiber / polyaniline composite ...

Embodiment 3

[0046] (1) Carbon fiber (felt) pretreatment:

[0047] Carbon fibers soaked to a concentration of 5% H 2 SO4 In the solution, soak for 30 minutes, wash with distilled water for 3 times, and dry in an oven at 80°C for 30 minutes.

[0048] (2) Carbon fiber / polyaniline composite material preparation:

[0049] a. Take the carbon fiber prepared in step (1), apply it on the foil with conductive silver glue, dry it on a hot table at 60°C, and set it aside.

[0050] b. Add aniline to the prepared 1M H 2 SO 4 solution, made into 0.1M aniline solution (1MH 2 SO 4 ),stand-by.

[0051] c, the carbon fiber prepared in step (2) a is the anode, the Cu foil is the cathode, and the 0.1M aniline solution (1M H 2 SO 4 ) is the electrolyte, cyclic voltammetry (CV) electropolymerized polyaniline, the scanning voltage is -0.1-1.0V, the scanning speed is 50mV / s, and the scanning cycle is 50 times, until the cycle diagram is stable, and it is ready for use;

[0052] (3) Carbon fiber / polyanili...

technical field

[0001] The invention belongs to the technical field of carbon fiber and electromagnetic shielding, in particular to a carbon fiber / polyaniline composite material, in particular to a preparation method of a carbon fiber / polyaniline wave-absorbing electromagnetic shielding composite material. Background technique

[0002] The 21st century is the era of interaction between human beings and the Internet. With the rapid development of the electronics industry, the application of artificial intelligence, and the arrival of the Internet + era, the application and popularization of various mobile digital devices, office equipment, household appliances, and instrumentation electronic products have brought great benefits to people's lives. A lot of convenience and experience. But it also brings electromagnetic wave radiation troubles to people, seriously endangering people's health problems. At the same time, it will also cause interference between electronic componen...

Examples

Embodiment 1

[0028] (1) Carbon fiber (felt) pretreatment:

[0029] Carbon fibers soaked to a concentration of 5% H 2 SO 4 In the solution, soak for 30 minutes, wash with distilled water for 3 times, and dry in an oven at 80°C for 30 minutes.

[0030] (2) Carbon fiber / polyaniline composite material preparation:

[0031] a. Take the carbon fiber prepared in step (1), apply it on the foil with conductive silver glue, dry it on a hot table at 60°C, and set it aside.

[0032] b. Add aniline to the prepared 1M H 2 SO 4 solution, made into 0.1M aniline solution (1MH 2 SO 4 ),stand-by.

[0033] c, the carbon fiber prepared in step (2) a is the anode, the Cu foil is the cathode, and the 0.1M aniline solution (1M H 2 SO 4 ) is the electrolyte, cyclic voltammetry (CV) electropolymerized polyaniline, the scanning voltage is -0.1-1.0V, the scanning speed is 100mV / s, and the scanning cycle is 50 times until the cycle diagram is stable. stand-by.

[0034] (3) Carbon fiber / polyaniline composite...

Embodiment 2

[0037] (1) Carbon fiber (felt) pretreatment:

[0038] Carbon fibers soaked to a concentration of 5% H 2 SO 4 In the solution, soak for 30 minutes, wash with distilled water for 3 times, and dry in an oven at 80°C for 30 minutes.

[0039] (2) Carbon fiber / polyaniline composite material preparation:

[0040] a. Take the carbon fiber prepared in step (1), apply it on the foil with conductive silver glue, dry it on a hot table at 60°C, and set it aside.

[0041] b. Add aniline to the prepared 1M H 2 SO 4 solution, made into 0.2M aniline solution (1MH 2 SO 4 ),stand-by.

[0042] c, the carbon fiber prepared in step (2) a is the anode, the Cu foil is the cathode, and the 0.2M aniline solution (1M H 2 SO 4 ) as the electrolyte, cyclic voltammetry (CV) electropolymerized polyaniline, the scanning voltage is -0.1–1.0V, the scanning speed is 50mV / s, and the scanning cycle is 50 times until the cycle diagram is stable. stand-by.

[0043] (3) Carbon fiber / polyaniline composite ...

Embodiment 3

[0046] (1) Carbon fiber (felt) pretreatment:

[0047] Carbon fibers soaked to a concentration of 5% H 2 SO4 In the solution, soak for 30 minutes, wash with distilled water for 3 times, and dry in an oven at 80°C for 30 minutes.

[0048] (2) Carbon fiber / polyaniline composite material preparation:

[0049] a. Take the carbon fiber prepared in step (1), apply it on the foil with conductive silver glue, dry it on a hot table at 60°C, and set it aside.

[0050] b. Add aniline to the prepared 1M H 2 SO 4 solution, made into 0.1M aniline solution (1MH 2 SO 4 ),stand-by.

[0051] c, the carbon fiber prepared in step (2) a is the anode, the Cu foil is the cathode, and the 0.1M aniline solution (1M H 2 SO 4 ) is the electrolyte, cyclic voltammetry (CV) electropolymerized polyaniline, the scanning voltage is -0.1-1.0V, the scanning speed is 50mV / s, and the scanning cycle is 50 times, until the cycle diagram is stable, and it is ready for use;

[0052] (3) Carbon fiber / polyanili...

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