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Preparation process for improving bonding capacity of carbon nanotube with rubber molecule

A carbon nanotube and binding ability technology, applied in the nano field, can solve the problems of difficult carbon nanotubes, weak force, limited improvement of carbon nanotube rubber properties, etc., to improve dispersion performance, tensile strength, and modulus. Effect

Inactive Publication Date: 2006-07-19
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, people such as M.A.López-Manchado discloses a kind of directly with carbon nanotube and natural rubber on " Journal of Applied Polymer Science " (Applied Polymer Journal, 2004,92,3394-3400) The method of preparing carbon nanotube nanocomposites by blending, 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 to disperse carbon nanotubes in rubber , carbon nanotubes have limited improvement on rubber properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 0.12g of multi-walled carbon nanotubes, add 60% to get 1.2g of nitric acid, 120g of concentrated sulfuric acid, stir at 100°C for 10 minutes, filter, take 0.1g of the product, add 0.01g of thionyl chloride, react at 50°C for 10 minutes, remove excess of thionyl chloride. Take 0.1g of the product, add 0.01g of 3-chloropropanol, stir and react at 150°C for 10 minutes, filter to remove excess 3-chloropropanol, take 0.1g of the product, add Na 2 S 2 0.01 g, 20 ml of ethanol, reacted for 10 minutes, filtered, and separated the product. Mixed rubber formula: 0.1 parts of modified carbon nanotubes, 75 parts of natural rubber, 15 parts of styrene-butadiene rubber, 5 parts of butadiene rubber, 5 parts of butyl rubber, 10 parts of super wear-resistant furnace black, 10 parts of white carbon black, 5 parts of zinc oxide, 2 parts of stearic acid, 1.6 parts of sulfur, 1.3 parts of accelerator. Vulcanize at 145°C for 35 minutes. The properties of the vulcanized rubber are: t...

Embodiment 2

[0026] Take 0.11g of multi-walled carbon nanotubes, add 60% to get 110g of nitric acid, 10g of concentrated sulfuric acid, stir at 20°C for 100 minutes, filter, take 0.1g of the product, add 10g of thionyl chloride, and react at 20°C for 100h to remove excess chloride Sulfoxide, take 0.1g of the product, 10g of 3-(triethoxysilane)propylamine, react at 20°C for 100h, remove excess 3-(triethoxysilane)propylamine, take 0.1g of the product, add bis [3-(Ethoxysilane)propyl]tetrasulfide 5g, stirred at 20°C for 100h, filtered to remove excess [3-(ethoxysilane)propyl]tetrasulfide, and separated the product. Mixed rubber formula: 0.1 parts of modified carbon nanotubes, 65 parts of natural rubber, 5 parts of styrene-butadiene rubber, 10 parts of butadiene rubber, 5 parts of butyl rubber, 5 parts of neoprene rubber, 10 parts of carbon black, white carbon black 10 parts, 3 parts zinc oxide, 2 parts stearic acid, 1.5 parts antioxidant 4010NA, 1.7 parts sulfur. Vulcanize at 140°C for 45 mi...

Embodiment 3

[0028] Take 0.13g of multi-walled carbon nanotubes, add 30% to obtain 65g of nitric acid, stir for 100h, filter, take 0.1g of product, add 5g of thionyl chloride, react at 100°C for 50 minutes, remove excess thionyl chloride, and take 0.1 g, add 5g of 3-chloropropylamine, stir and react at 50°C for 30h, remove excess 3-chloropropylamine by filtration, take 0.1g of the product, add Na 2 S 6 10g, 40ml of ethanol, reacted for 100h, filtered, and separated the product. Mixed rubber formula: 0.1 parts of modified carbon nanotubes, 85 parts of natural rubber, 10 parts of styrene-butadiene rubber, 10 parts of butadiene rubber, 20 parts of carbon black, 1 part of zinc oxide, 2 parts of stearic acid, 1.4 parts of antioxidant 4010NA Parts, 1.6 parts of sulfur. Vulcanize at 140°C for 45 minutes. The properties of the vulcanized rubber are: tensile 33.3MPa, 300% modulus stress 19.4MPa.

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Abstract

The disclosed preparation method for carbon nano tube / rubber nano composite material to improve bonding capacity among molecule comprises: covalent binding polysulfide on carbon nano tube surface treated by acid; then blending the decorative tube and rubber to prepare the target; wherein, the said carbon nano tube is obtained by any one of following methods: 1) treating the tube with acid; then reacting with acylating agent and the polysulfide; 2) taking the acidized tube to react with polysulfide directly; 3) using functionalized tube to react with polysulfide. This invention introduces strong mutual action between the carbon nano tube and polymer to improve property of the composite material.

Description

technical field [0001] The invention relates to a method in the field of nanotechnology, in particular to a preparation method for improving the binding ability of carbon nanotubes and rubber molecules. 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 ...

Claims

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Application Information

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IPC IPC(8): C09C3/08C08K9/06C08K3/04C08L7/00C08L9/00C08L9/06C08L23/16C08L9/02
Inventor 魏良明
Owner SHANGHAI JIAO TONG UNIV
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