Method for preparing carbon nano tube/rubber nano composite matcrial by non-acidation treatment

A technology of carbon nanotubes and rubber nanotechnology, applied in the field of nanometers, can solve problems such as weak force, difficulty in carbon nanotubes, and structural damage of carbon nanotubes, and achieve increased tensile strength, modulus, and improved dispersion performance and integrity. The effect of protection

Inactive Publication Date: 2006-05-24
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Found through literature search to prior art, M.A.López-Manchado et al. disclose a kind of carbon nanotube and natural rubber directly on " Journal of Applied Polymer Science " (Applied Polymer Journal, 2004,92,3394-3400) The method for preparing carbon nanotube nanocomposites by blending is due to the smooth surface of carbon nanotubes, the force between carbon nanotubes and rubber molecules in the nanocomposites prepared by this method is weak, and it is difficult for carbon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 0.12g of single-walled carbon nanotubes, 30ml of 1,2-dichlorobenzene, 30ml of acetonitrile, add 0.0117g of isoamyl nitrite, 0.025g of 4,4′-dithioaniline, and stir for 10 minutes at 100°C under nitrogen protection , to remove excess reactants by filtration. Mixed rubber formula: take 0.1 parts of modified carbon nanotubes, 70 parts of natural rubber, 10 parts of styrene-butadiene rubber, 10 parts of butadiene rubber, 5 parts of isoamyl rubber, 5 parts of chlorobutyl rubber, 40 parts of carbon black, 5 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of antioxidant 4020, 1.4 parts of sulfur, and 1.5 parts of accelerator. 45 minutes under vulcanization at 140°C. The performance of the vulcanized rubber is: tensile 23.4MPa, 300% modulus stress 14.0MPa.

Embodiment 2

[0021] Take 0.12g of single-walled carbon nanotubes, 10ml of 1,2-dichlorobenzene, and 10ml of acetonitrile, add 0.02g of isoamyl nitrite, 0.025g of 4,4'-dithioaniline, and stir for 100h under the protection of nitrogen at 20°C. Excess reactant was removed by filtration. Mixed rubber formula: take 0.1 part of modified carbon nanotubes, 100 parts of natural rubber, 30 parts of carbon black, 5 g of zinc oxide, 2 g of stearic acid, 1.5 g of antioxidant 4020, and 2 g of sulfur. 45 minutes under vulcanization at 140°C. The performance of the vulcanized rubber is: tensile 35.4MPa, 300% modulus stress 16.4MPa.

Embodiment 3

[0023] Take 0.11 g of single-walled carbon nanotubes, add 117 g of isoamyl nitrite, 248 g of 4,4′-dithioaniline, stir for 20 h at 25° C. under the protection of nitrogen, and filter to remove excess reactants. Mixed rubber formula: Take 0.1 parts of modified carbon nanotubes, 80 parts of natural rubber, 5 parts of styrene-butadiene rubber, 10 parts of butadiene rubber, 5 parts of ethylene-propylene rubber, 40 parts of carbon black, 10 parts of white carbon black, oxidized 5 parts of zinc, 2 parts of stearic acid, 1.4g of sulfur, 1.7 parts of accelerator. Vulcanize at 143°C for 35 minutes. The properties of the vulcanized rubber are: tensile 36.7MPa, 300% modulus stress 16.4MPa.

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Abstract

The invention relates to a method to manufature carbon nm tube/rubber nm compounding material. The carbon nm tube directly reacts with polysulfide under the condition of the existing of nitroso compounding. The polysulfide covalence is grafted on the surface of the nm tube, the carbon nm tube and rubber molecules are covalence combined by sulphur atoms, the polymer molecules is covalence grafts on the tube surface of the carbon nm tube. The nm compounding material is manufactured by covalence grafting the carbon nm tube and the rubber. The invention could improve the dispersibility of carbon nm tube in rubber.

Description

technical field [0001] The invention relates to a method in the field of nanotechnology, in particular to a non-acidification-treated carbon nanotube / rubber nanocomposite preparation method. Background technique [0002] Carbon nanotubes have attracted great interest since their discovery due to their excellent mechanical and electrical properties. Dispersing carbon nanotubes in polymer materials to improve the mechanical and electrical properties of polymer materials is a hot spot in the field of nanocomposite research in recent years. The key to preparing carbon nanotube nanocomposites is to improve the dispersion performance of carbon nanotubes in polymers and to enhance the interaction between carbon nanotubes and polymer materials. The preparation of carbon nanotubes / rubber nanocomposites in the prior art mainly uses Carbon nanotubes are blended with rubber. [0003] Found through literature search to prior art, people such as M.A.López-Manchado discloses a kind of di...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08J3/24C08K3/04C08K9/04C08L9/00C08L13/00C08L23/16
Inventor 魏良明
Owner SHANGHAI JIAO TONG UNIV
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