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Modified carbon nano tube/thermosetting resin composite material and preparation method thereof

A resin composite material and carbon nanotube technology, which is applied in the field of modified carbon nanotube/thermosetting resin composite materials and their preparation, can solve the problem of low-cost manufacturing of high-performance composite materials with unfavorable filling amount, increasing industrial difficulty of composite materials, and disadvantages. Material dielectric constant and other issues, to achieve the effect of low-cost manufacturing, low dielectric loss, and reduced dielectric loss

Inactive Publication Date: 2013-05-01
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above prior art that the direct consequence of using the blending method to prepare the conductor / dielectric ceramic / polymer ternary composite material is the increase in the amount of filler. Such a high filling amount is not conducive to the low cost of high-performance composite materials. Cost manufacturing, and increase the industrial difficulty of composite materials
In addition, the lack of active groups on the surface of the filler will form voids between the phase interfaces after adding the resin, which is not conducive to improving the dielectric constant of the material

Method used

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  • Modified carbon nano tube/thermosetting resin composite material and preparation method thereof
  • Modified carbon nano tube/thermosetting resin composite material and preparation method thereof
  • Modified carbon nano tube/thermosetting resin composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] 1. Synthesis of lithium-titanium-doped nickel oxide

[0034]Dissolve 50g of citric acid in 80mL of ethylene glycol, add 5.12g of lithium nitrate, 49.5g of nickel nitrate and 1.7g of butyl titanate in sequence at 100°C, keep warm at 150°C for 8 hours, and then heat The solution was kept at 350°C for 2 hours to obtain a gray powder; the gray powder was ground to pass through a 140-mesh sieve; calcined at 800°C for 1 hour to obtain black lithium-titanium-doped nickel oxide, its infrared spectrum, Raman spectrum, The X-ray diffraction pattern is as figure 1 , 2 and 3.

[0035] 2. Preparation of silanized lithium-titanium-doped nickel oxide

[0036] Disperse 10 g of lithium-titanium-doped nickel oxide that can pass through a 140-mesh sieve after grinding in 50 mL of 35% hydrogen peroxide solution, and react at a temperature of 90 °C for 5 h; after the reaction, deionized Washed with water, filtered with suction, and dried under vacuum at 50°C for 24 hours to obtain hydro...

Embodiment 2

[0050] 1. Preparation of modified carbon nanotubes

[0051] 300mg of the carboxyl-containing carbon nanotubes prepared in Example 1 were dispersed in 120mL of N,N-dimethylformamide, and 600mg of the silanized lithium-titanium-doped nickel oxide prepared in Example 1 was added, at a temperature of 70°C Under the condition of reaction 24h. Washing with absolute ethanol, suction filtration, and vacuum drying at 50° C. for 24 hours to obtain modified carbon nanotubes, wherein the amount of lithium-titanium-doped nickel oxide grafted is twice the mass of carbon nanotubes. Its 30,000 times magnified scanning electron microscope image and conductivity curve Figure 6 , 7 shown.

[0052] 2. Preparation of modified carbon nanotubes / epoxy resin composites

[0053] Add 1.5g of the modified carbon nanotubes prepared in this example and 100g of epoxy resin (grade E-51) into the flask, stir at 60°C and ultrasonically for 1h, vacuum defoam for 30min, add 4g of 2-ethyl -4-Methylimidazole...

Embodiment 3

[0055] 1. Preparation of modified carbon nanotubes

[0056] 300 mg of carbon nanotubes with carboxyl groups prepared in Example 1 were dispersed in 120 mL of N,N-dimethylformamide, and 300 mg of silanized lithium-titanium-doped nickel oxide prepared in Example 1 was added, at a temperature of 70° C. Under the condition of reaction 24h. Washing with absolute ethanol, suction filtration, and vacuum drying at 50° C. for 24 hours to obtain modified carbon nanotubes, wherein the amount of lithium-titanium-doped nickel oxide grafted is 1 times the mass of carbon nanotubes. Its 30,000 times magnified scanning electron microscope image and conductivity curve Figure 6 , 7 shown.

[0057] 2. Preparation of modified carbon nanotubes / epoxy resin composites

[0058] Add 1.0 g of the modified carbon nanotubes prepared in this example and 100 g of bisphenol A epoxy resin (brand E-51) into the flask, stir at 60°C and ultrasonically for 1 hour, vacuum degassing for 30 minutes, and add 4 g...

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Abstract

The invention discloses a modified carbon nano tube / thermosetting resin composite material and a preparation method thereof. The preparation method comprises the following steps: dispersing a carbon nano tube with carboxyl into N,N-dimethylformamide, then adding lithium-titanium-doped nickel oxide subjected to silanization to perform reaction, filtering, washing and drying to obtain a modified carbon nano tube; and uniformly mixing the modified carbon nano tube and molten thermal-curable resin and carrying out curing treatment to obtain the modified carbon nano tube / thermosetting resin composite material. The composite material has the characteristics of high dielectric constant and low dielectric loss. The surface of the modified carbon nano tube is grafted with the lithium-titanium-doped nickel oxide and by regulating content of the lithium-titanium-doped nickel oxide, control on dielectric property of the composite material can be realized. The composite material provided by the invention also has the characteristics of wide applicability of the preparation method and simple operation process.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a modified carbon nanotube / thermosetting resin composite material and a preparation method thereof. Background technique [0002] As a functional material, high dielectric constant materials have important application prospects in information technology, microelectronics, power engineering and other fields. In recent years, the advantages of conductor / dielectric ceramic / polymer ternary composites in the preparation of high dielectric constant materials have attracted attention. [0003] At present, the preparation of conductor / dielectric ceramic / polymer ternary composite materials mainly adopts the method of simple physical blending, but the lack of interaction force between the two fillers cannot achieve a synergistic effect, resulting in the dielectric strength of the prepared composite material. Performance did not meet expectations. Before the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L79/08C08L79/04C08K9/06C08K9/04C08K9/02C08K7/00C08K3/04
Inventor 梁国正沈逸飞顾嫒娟强志翔袁莉
Owner SUZHOU UNIV
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