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Preparation method of high-performance carbon nano tube/epoxy resin

A technology of carbon nanotubes and epoxy resins, which is applied in the field of preparation of performance carbon nanotubes/epoxy resins, can solve the problems of poor amination modification, high polarity of amino groups, and weak interfacial binding force and other issues, to achieve the effects of improved performance indicators, easy storage, improved modulus and toughness

Active Publication Date: 2015-06-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the experiment, the applicant found that the amino groups on the surface of the aminated carbon nanotubes are more polar, and the epoxy resin has poor wettability to the aminated carbon nanotubes during the mixing process with the epoxy resin, so the amination When carbon nanotubes are added into the epoxy resin matrix in the form of solid powder, they cannot play a good role in improving the dispersion of amination modification.
At the same time, the inert surface makes the interfacial bonding force between the matrix and the matrix weak, and the stress cannot be effectively transferred between the matrix and the carbon nanotubes when loaded.
Aiming at the disadvantages of poor dispersion of carbon nanotubes and poor interfacial bonding

Method used

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  • Preparation method of high-performance carbon nano tube/epoxy resin
  • Preparation method of high-performance carbon nano tube/epoxy resin
  • Preparation method of high-performance carbon nano tube/epoxy resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] There are four kinds of components in the present embodiment, are respectively:

[0038] Component 1: aminated multi-walled carbon nanotubes, the aminated carbon nanotubes are aminated carbon nanotubes grafted with diethyltoluenediamine on the surface purchased by Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences.

[0039] Component 2: benzyl glycidyl ether;

[0040] Component 3: diaminodiphenylethane;

[0041] Component 4: Diethyltoluenediamine.

[0042] The specific implementation steps of this embodiment are as follows:

[0043] 1. Grinding the aminated carbon nanotubes.

[0044] 2. Put the ground carbon nanotubes into an electric vibrating sieve machine, and sieve the aminated carbon nanotubes with a mesh number of 100.

[0045] 3. Add 0.5 g of the 100-mesh aminated carbon nanotubes sieved in step 2 to 0.5 g of benzyl glycidyl ether, and stir mechanically at room temperature for 3 hours to obtain a black viscous liquid, which is named as mixture I...

Embodiment 2

[0052] The raw material of present embodiment is with embodiment 1, and concrete implementation steps are as follows:

[0053] 1. Grinding the aminated carbon nanotubes.

[0054] 2. Put the ground carbon nanotubes into an electric vibrating sieve machine, and sieve the aminated carbon nanotubes with a mesh number of 50.

[0055] 3. Add 0.5 g of the 50-mesh aminated carbon nanotubes sieved in step 2 to 0.75 g of benzyl glycidyl ether, and stir mechanically at room temperature for 2 hours to obtain a black viscous liquid, which is named as mixture I.

[0056] 4. Add the mixture Ⅰ into the planetary ball mill, and ball mill for 4 hours under the protection of nitrogen. The speed of the ball mill is 200-500r / min. After 10 minutes of continuous ball milling, a 5-minute interval is required to obtain a uniform black viscous liquid, which is named mixture Ⅱ.

[0057] 5. The mixture II was mechanically stirred in an oil bath at 150° C. for 3 h to obtain the mixture III.

[0058] 6. ...

Embodiment 3

[0062] The raw material of present embodiment is with embodiment 1, and concrete implementation steps are as follows:

[0063] 1. Grinding the aminated carbon nanotubes.

[0064] 2. Put the ground carbon nanotubes into an electric vibrating sieve machine, and sieve the aminated carbon nanotubes with a mesh number of 80.

[0065] 3. Add 2 g of the 80-mesh aminated carbon nanotubes sieved in step 2 to 2 g of benzyl glycidyl ether, and stir mechanically at room temperature for 2 h to obtain a black viscous liquid, which is named as mixture I.

[0066] 4. Add the mixture Ⅰ into the planetary ball mill, ball mill for 3 hours under the protection of nitrogen, the speed of the ball mill is 200-500r / min, after 10 minutes of continuous ball milling, a 5-minute interval is required to obtain a uniform black viscous liquid, which is named as the mixture Ⅱ.

[0067] 5. The mixture II was mechanically stirred in an oil bath at 150° C. for 3 h to obtain the mixture III.

[0068] 6. The mi...

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Abstract

The invention relates to the technical field of improvement of epoxy resin performance, in particular to a preparation method of high-performance carbon nano tube / epoxy resin. The method comprises steps as follows: a component 1 is added to a component 2 according to a condition I and a condition II and stirred, a mixture I is obtained and subjected to ball milling for 0.5-4 h under the protection of nitrogen, and a mixture II is obtained; the mixture II is subjected to oil bath under the condition of 150 DEG C, and a mixture III is obtained; the mixture III is left to stand at the room temperature, and a mixture IV is obtained; a component 3 and a component 4 are stirred and mixed at the temperature of 90 DEG C according to a condition III and a condition IV, and a mixture V is obtained; the mixture IV and the mixture V are treated at the ultrasonic power of 60 w. The carbon nano tube / epoxy resin is a viscous liquid at the room temperature, 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl is added, an epoxy resin casting body sample bar is prepared, the tensile strength of the sample bar is higher than 115 MPa, the elongation at break is higher than 4.2%, the bending strength is higher than 170 MPa, and the bending modulus is higher than 4,300 MPa.

Description

Technical field: [0001] The invention relates to the technical field of improving the performance of epoxy resin, in particular to a preparation method of performance carbon nanotube / epoxy resin. Background technique: [0002] Epoxy resin generally refers to organic compounds containing two or more epoxy groups in the molecule. Epoxy resin itself is thermoplastic and cannot be used directly. Value. There are many kinds of curing agents, surpassing epoxy resins in variety. Since the epoxy resin is highly dependent on the curing agent, it is very important to select the curing agent according to the application. [0003] Carbon fiber refers to a fibrous carbon material whose weight content of carbon accounts for more than 90%. There are a wide range of raw materials that can be used to manufacture carbon fibers. Not only can organic fibers be thermally decomposed to produce carbon fibers, but also graphite whiskers and carbon nanotubes generated by the discharge of carbon m...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K9/04C08K7/24
Inventor 隋刚吴剑桥张清杰杨小平
Owner BEIJING UNIV OF CHEM TECH
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