Preparation method for silane coupling agent modified CNTs/CFDSF/AG-80 epoxy resin composite material

Abstract

The invention relates to a preparation method for a silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material. The preparation method mainly comprises the following steps: step 1,acidification of carbon nanotubes (CNTs) with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid; step 2, modification of O-CNTs obtained by acidification treatment through a silane coupling agent; step 3, surface cleaning and surface modification treatment of carbon fiber double-layer spaced fabric (CFDSF); and step 4, pouring and thermocuring of CFDSF with a prepared modified CNTs / AG-80 epoxy resin solution. According to the invention, the silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material prepared through the above-mentioned preparation steps and concrete process parameters thereof and with advantages of good conductivity, thermodynamic properties and less usage amount of a conducting material has the following advantages: modified carbon nanotubes are uniformly distributed in a matrix; and the composite material has good conductive stability and can be extensively applied to the fields of electronics, electrostatic protection, electromagnetic shielding, microwave absorption, etc.

Description

technical field

[0001] The invention relates to the field of composite materials, in particular to a silane coupling agent modified CNTs / CFDSF (carbon fiber double-layer spacer fabric) / AG-80 epoxy resin composite material and a preparation method thereof. Background technique

[0002] With the rapid development of the electronic technology industry, the demand for functional composite materials with good electrical conductivity is also increasing. Since the conductive composite material has the characteristics of light weight, no rust, good dimensional stability, and adjustable conductivity in a wide range, it is also easy to process into various complex shapes and easy to mass industrial production, so it is used in electrostatic protection. , electromagnetic shielding, microwave absorption and other fields are widely used. At present, the common conductive composite materials usually use polymer as the matrix, and at the same time add conductive substances such as carbon-...

Examples

Embodiment 1

[0040] For the modification of carbon nanotubes (CNTs), the inventors of the present application have studied the use of silane coupling agents for modification and only acidification for modification. The present invention protects the use of silane coupling agents to modify CNTs / CFDSF / AG-80 preparation method of epoxy resin composite material;

[0041] A preparation method for preparing silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material, mainly comprising the following steps:

[0042] 1. Modification of carbon nanotubes (CNTs) with silane coupling agent

[0043] 1.1) The carbon nanotubes (CNTs) are modified with a silane coupling agent, and first acidified:

[0044] The CNTs were acidified with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, and 2g of CNTs was placed in 250ml of a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein the volume ratio of concentrated nitric acid ...

Embodiment 2

[0053] For the modification of carbon nanotubes (CNTs), the inventors of the present application have studied the use of silane coupling agents for modification and only acidification for modification. The present invention protects the use of silane coupling agents to modify CNTs / CFDSF / AG-80 preparation method of epoxy resin composite material;

[0054] A preparation method for preparing silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material, mainly comprising the following steps:

[0055] 1. Modification of carbon nanotubes (CNTs) with silane coupling agent

[0056] 1.1) The carbon nanotubes (CNTs) are modified with a silane coupling agent, and first acidified:

[0057] The CNTs were acidified with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, and 3.5g of CNTs were placed in 375ml of a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein the volume ratio of concentrated nitric ac...

Embodiment 3

[0066] For the modification of carbon nanotubes (CNTs), the inventors of the present application have studied the use of silane coupling agents for modification and only acidification for modification. The present invention protects the use of silane coupling agents to modify CNTs / CFDSF / AG-80 preparation method of epoxy resin composite material;

[0067] A preparation method for preparing silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material, mainly comprising the following steps:

[0068] 1. Modification of carbon nanotubes (CNTs) with silane coupling agent

[0069] 1.1) The carbon nanotubes (CNTs) are modified with a silane coupling agent, and first acidified:

[0070] The CNTs were acidified with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, and 5 g of CNTs were placed in 500 ml of a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein the volume ratio of concentrated nitric ac...

technical field

[0001] The invention relates to the field of composite materials, in particular to a silane coupling agent modified CNTs / CFDSF (carbon fiber double-layer spacer fabric) / AG-80 epoxy resin composite material and a preparation method thereof. Background technique

[0002] With the rapid development of the electronic technology industry, the demand for functional composite materials with good electrical conductivity is also increasing. Since the conductive composite material has the characteristics of light weight, no rust, good dimensional stability, and adjustable conductivity in a wide range, it is also easy to process into various complex shapes and easy to mass industrial production, so it is used in electrostatic protection. , electromagnetic shielding, microwave absorption and other fields are widely used. At present, the common conductive composite materials usually use polymer as the matrix, and at the same time add conductive substances such as carbon-...

Examples

Embodiment 1

[0040] For the modification of carbon nanotubes (CNTs), the inventors of the present application have studied the use of silane coupling agents for modification and only acidification for modification. The present invention protects the use of silane coupling agents to modify CNTs / CFDSF / AG-80 preparation method of epoxy resin composite material;

[0041] A preparation method for preparing silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material, mainly comprising the following steps:

[0042] 1. Modification of carbon nanotubes (CNTs) with silane coupling agent

[0043] 1.1) The carbon nanotubes (CNTs) are modified with a silane coupling agent, and first acidified:

[0044] The CNTs were acidified with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, and 2g of CNTs was placed in 250ml of a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein the volume ratio of concentrated nitric acid ...

Embodiment 2

[0053] For the modification of carbon nanotubes (CNTs), the inventors of the present application have studied the use of silane coupling agents for modification and only acidification for modification. The present invention protects the use of silane coupling agents to modify CNTs / CFDSF / AG-80 preparation method of epoxy resin composite material;

[0054] A preparation method for preparing silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material, mainly comprising the following steps:

[0055] 1. Modification of carbon nanotubes (CNTs) with silane coupling agent

[0056] 1.1) The carbon nanotubes (CNTs) are modified with a silane coupling agent, and first acidified:

[0057] The CNTs were acidified with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, and 3.5g of CNTs were placed in 375ml of a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein the volume ratio of concentrated nitric ac...

Embodiment 3

[0066] For the modification of carbon nanotubes (CNTs), the inventors of the present application have studied the use of silane coupling agents for modification and only acidification for modification. The present invention protects the use of silane coupling agents to modify CNTs / CFDSF / AG-80 preparation method of epoxy resin composite material;

[0067] A preparation method for preparing silane coupling agent modified CNTs / CFDSF / AG-80 epoxy resin composite material, mainly comprising the following steps:

[0068] 1. Modification of carbon nanotubes (CNTs) with silane coupling agent

[0069] 1.1) The carbon nanotubes (CNTs) are modified with a silane coupling agent, and first acidified:

[0070] The CNTs were acidified with a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, and 5 g of CNTs were placed in 500 ml of a mixed acid solution of concentrated nitric acid and concentrated sulfuric acid, wherein the volume ratio of concentrated nitric ac...

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