Method for preparing carbon nanotube-natural rubber compound material

A technology of natural rubber and carbon nanotubes is applied in the field of preparation of carbon nanotube-natural rubber composite materials, and can solve the problems that the mechanical properties of carbon nanotube-natural rubber composite materials are not significantly improved, etc.

Inactive Publication Date: 2009-03-11
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It may be that the carbon nanotubes are not fully dispersed in the rubber, resulting in the mechani...

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] Weigh 1 part of acid-treated single-walled nanotubes with a diameter of 20 nm, add 0.5 parts of sodium dodecylbenzenesulfonate, 100 deionized water, and ultrasonically disperse for 30 minutes. Add 10 parts of dry glue to calculate the degree of epoxidation as 25 %, a total solid content of 25% epoxidized natural rubber latex, ultrasonic dispersion for 30 minutes to prepare a carbon nanotube dispersion; get 100 parts of concentrated natural rubber latex with a dry rubber total solid content of 60%, add 0.5 part Fatty alcohol ethoxylates are then added to the above carbon nanotube dispersion under stirring. After uniform stirring, a latex-like carbon nanotube-natural rubber composite material is obtained. Add 1.0 parts of sulfur, 0.5 parts of zinc oxide, 1.0 parts of tetramethylthiuram disulfide to the material, and vulcanize in a water bath at 60°C for 1.5 hours. The tensile strength of the vulcanized film obtained is 28.7 MPa, and the elongation at break is 763%, 300% ...

Embodiment 2

[0024] Weigh 2 parts of acid-treated multi-walled carbon nanotubes with a diameter of 40nm, add 1.0 parts of sodium dodecylbenzenesulfonate, 100 parts of deionized water, ultrasonically disperse for 30 minutes, add 10 parts of dry glue to measure the degree of epoxidation 25%, total solid content is the epoxidized natural rubber latex of 25%, ultrasonic dispersion is 30 minutes, prepares carbon nanotube dispersion; Get 100 parts of concentrated natural rubber latex that total solid content is 60% with dry glue, add 0.5 parts of fatty alcohol polyoxyethylene ether, and then, add the above-mentioned carbon nanotube dispersion under stirring. After being evenly stirred, formic acid is used for coagulation, tablet pressing, washing and drying to prepare a dry gelatinous carbon nanotube-natural rubber composite material. Then add 3.5 parts of sulfur, 5.0 parts of zinc oxide, 1.0 parts of stearic acid, 1.2 parts of benzothiazole disulfide, 0.5 parts of diphenylguanidine, 1.5 parts o...

Embodiment 3

[0026] Take by weighing 2 parts of acid-treated multi-walled carbon nanotubes with a diameter of 20nm, add 0.5 part of sodium dodecylbenzenesulfonate, 100 deionized water, ultrasonically disperse for 30 minutes, add 10 parts of dry glue to measure the epoxidation degree of 25%, the epoxidized natural rubber latex with a total solid content of 25%, ultrasonically dispersed for 30 minutes, and prepared a carbon nanotube dispersion; 100 parts of concentrated natural rubber latex with a total solid content of 60% in dry rubber were added, and 0.5 Parts of fatty alcohol polyoxyethylene ether, and then, add the above-mentioned carbon nanotube dispersion under stirring. After uniform stirring, a latex-like carbon nanotube-natural rubber composite material is obtained. Add 0.5 part of tert-butyl hydroperoxide, 0.1 part of fructose, 0.1 part of 0.001% ferrous sulfate aqueous solution, 1.0 part of butyl methacrylate to the material, and vulcanize in a water bath at 30° C. for 3 hours. ...

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Abstract

The invention provides a method for preparing carbon nano tube-natural rubber composite materials, which is characterized in that the method takes epoxidised natural rubber as a compatilizer between a carbon nano tube and natural rubber, utilizes the excellent compatibility between the epoxidised natural rubber and the natural rubber and the chemical reaction between the epoxidised natural rubber and the carbon nano tube, and improves the dispersion effect of the carbon nano tube in the natural rubber and strengthening the interaction between the carbon nano tube and the natural rubber to prepare the high-performance carbon nano tube-natural rubber composite materials. The tensile strength of vulcanized films of the composite materials is between 26 and 30 MPA; the elongation at break is between 750 and 900 percent; and the 300 percent stress at definite elongation is between 4.0 and 6.0 MPa.

Description

[Field of invention] [0001] The invention relates to a preparation method of a natural rubber-based composite material, in particular to a preparation method of a carbon nanotube-natural rubber composite material. [Background technique] [0002] The application of nanotechnology in the field of rubber mainly utilizes the quantum size effect, large specific surface area effect and macroscopic quantum tunneling effect of nanoparticle materials with a particle size of less than 100nm. Properties, preparation of high-performance nanocomposites. Nanotechnology can make a qualitative leap in some important properties of natural rubber, such as thermal oxygen aging resistance, ultraviolet aging resistance, heat generation reduction and air tightness improvement. Nanoparticle materials such as SiO in some nanorubber composites 2 、TiO 2 , ZnO, Ai 2 o 3 And mica can absorb or reflect ultraviolet rays with a wavelength of 300-400nm in the atmosphere, delaying the direct effect of ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L15/00C08K7/24C08J3/205
Inventor 余和平彭政罗勇悦孔令学
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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