Preparation method of carbon fiber/graphene oxide/organic silicon resin multidimensional hybrid composite material

A composite material and carbon fiber technology, applied in the field of nanomaterials, can solve the problems of poor mechanical properties, poor wettability of matrix resin, and low interface bonding strength, and achieve the effects of easy operation, improved interface bonding strength, and improved mechanical properties

Active Publication Date: 2017-04-12
HARBIN INST OF TECH
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  • Description
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  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problems of low carbon fiber surface active groups and poor wettability with matrix resin, resulting in low interfacial bonding strength and poor mechanical properties of carbon fiber reinforced silicone resin matrix composite materials, the invention provides a carbon fiber / graphene oxide / Preparation method of organosilicon resin multidimensional hybrid composite material

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  • Preparation method of carbon fiber/graphene oxide/organic silicon resin multidimensional hybrid composite material

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Embodiment 1

[0019] 1. Preparation of graphite oxide: put a three-necked flask containing 4g of nano-graphite into an ice-water bath, and slowly add 9gKMnO 4 and 200mL concentrated H 2 SO 4 / H 3 PO 4 Mixed solution (v:v=9:1), mechanically stirred for 1h to make it fully mixed; then heated up to 50°C for 15h, after the reaction was completed, 800mL of distilled water was added dropwise, and then 15mL of 30% H 2 o 2 , the solution gradually turned bright yellow, washed repeatedly with 5% dilute HCl and distilled water, and centrifuged until the filtrate was nearly neutral. Vacuum drying at 60°C to obtain graphite oxide;

[0020] 2. Preparation of graphene oxide: weigh 0.37g of graphite oxide and add it to 100mL of distilled water, ultrasonically oscillate for 30 minutes with the probe of an ultrasonic pulverizer, then centrifuge at 11000r / min with a centrifuge, and vacuum dry at 60°C to obtain graphene oxide powder;

[0021] 3. Aminopropyl alkylation treatment of graphene oxide: immer...

Embodiment 2

[0032] 1. Preparation of graphite oxide: put a three-neck flask containing 8g nano-graphite into an ice-water bath, slowly add 18gKMnO 4 and 400mL concentrated H 2 SO4 / H 3 PO 4 Mixed solution (v:v=9:1), mechanically stirred for 1h to make it fully mixed; then heated up to 50°C for 15h, after the reaction, 800mL of distilled water was added dropwise, and then 30mL of 30% H 2 o 2 , the solution gradually turned bright yellow, washed repeatedly with 5% dilute HCl and distilled water, and centrifuged until the filtrate was nearly neutral. Vacuum drying at 60°C to obtain graphite oxide;

[0033] 2. Preparation of graphene oxide: weigh 3.74g of graphite oxide and add it to 500mL of distilled water, ultrasonically oscillate for 30 minutes with the probe of an ultrasonic pulverizer, then centrifuge at 11000r / min with a centrifuge, and vacuum dry at 60°C to obtain graphene oxide powder;

[0034] 3. Aminopropyl alkylation treatment of graphene oxide: immerse 1g of graphene oxide i...

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Abstract

The invention relates to a preparation method of a composite carbon fiber / graphene oxide / organosilicone resin multidimensional hybrid material and belongs to the technical field of nanometer materials. In order to solve the technical problems that low interface adhesive strength and poor mechanical properties of the carbon-fiber-reinforced silicone resin-based composite material, caused by less active groups on the surface of carbon fiber and poor wetting property between carbon fiber and matrix resin, the preparation method comprises the following steps of firstly, preparing graphite oxide; secondly, preparing graphene oxide; thirdly, carrying out aminopropyl alkylation treatment on graphene oxide; fourthly, carrying out surface functionalization treatment on carbon fiber; and fifthly preparing the composite carbon fiber / graphene oxide / organosilicone resin multidimensional hybrid material. The interlaminar shear strength of the composite carbon fiber / graphene oxide / organosilicone resin multidimensional hybrid material prepared by the preparation method disclosed by the invention can reach up to 30.43Mpa, which is increased by 25.8% compared with the interlaminar shear strength of the untreated material and the application ranges of carbon fiber, graphene oxide and organosilicone resin are widened.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a method for preparing a carbon fiber / graphene oxide / organic silicon resin (CF / GO / SR) multidimensional hybrid composite material. Background technique [0002] Carbon fiber / silicone resin-based composite materials are widely used in the aerospace field due to their excellent high temperature resistance, weather resistance and easy processing and molding. However, the mechanical properties (bending, tensile, impact, etc.) of carbon fiber-reinforced silicone-based composites are weak, and the interfacial adhesion between silicone and carbon fibers is poor, which seriously affects the application of silicone-based composites in the aerospace field. further application. [0003] As we all know, the interfacial phase is a unique and extremely important component of composite materials. The structure and characteristics of the interfacial phase directly affect the stress tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/10C08J5/06C08L83/04C08K9/02C08K9/06C08K3/04C08K7/06
Inventor 刘丽武光顺黄玉东马丽春张庆波谢非王芳姜波
Owner HARBIN INST OF TECH
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