Preparation method for multiwalled carbon nanotube modified aircraft tire rubber material

A technology of multi-walled carbon nanotubes and aviation tires, applied in special tires, tire parts, transportation and packaging, etc., can solve the problem of reducing the dynamic heat generation of tire rubber materials

Inactive Publication Date: 2016-04-13
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, it has not been found that multi-walled carbon nanotubes are applied to the rubber material system of aircraft tires, and the synergistic enhancement effect of multi-walled carbon nanotubes and carbon black is used to obtain higher mechanical pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Dissolve 0.36g of sodium dodecylbenzenesulfonate in 600mL of distilled water at 30-35°C, stir for 0.5 hours, add 3g of multi-walled carbon nanotubes with carboxyl groups on the surface, stir and sonicate at 30-35°C 1 hour, a stable suspension was obtained;

[0022] (2) 16.67g of natural rubber emulsion with a solid content of 60% is added to the suspension obtained in step (1), stirred and ultrasonicated for 1 hour at 30 to 35° C., to make the above-mentioned multi-walled carbon nanoparticles with carboxyl groups on the surface Tubes are dispersed in natural rubber emulsion to form a blended emulsion, and then the above-mentioned blended emulsion is flocculated and precipitated with 6% sulfuric acid aqueous solution, filtered under reduced pressure and vacuum-dried at 60 ° C for 12 hours to obtain multi-walled carbon nanotubes. and natural rubber masterbatch;

[0023] (3) Mix 13g of masterbatch obtained in step (2) with 1.2g of coupling agent KH550 at 50°C for 5 to...

Embodiment 2

[0027] (1) Dissolve 0.48g of sodium dodecylbenzenesulfonate in 800mL of distilled water at 30-35°C, stir for 0.5 hours, add 4g of multi-walled carbon nanotubes with carboxyl groups on the surface, stir and mix at 30-35°C Sonicate for 1 hour to obtain a stable suspension;

[0028] (2) 16.67g of natural rubber emulsion with a solid content of 60% is added to the suspension obtained in step (1), stirred and ultrasonicated for 1 hour at 30-35° C., to make the above-mentioned multi-walled carbon nanometer with carboxyl groups on the surface Tubes are dispersed in natural rubber emulsion to form a blended emulsion, and then the blended emulsion is flocculated and precipitated with 6% formic acid aqueous solution, filtered under reduced pressure and vacuum-dried at 60 ° C for 12 hours to obtain multi-walled carbon nanotubes and Masterbatches composed of natural rubber;

[0029] (3) Mix 14g of masterbatch obtained in step (2) with 1.6g of coupling agent KH550 at 50°C for 5 to 10 minu...

Embodiment 3

[0031] (1) Dissolve 0.75g of sodium dodecylbenzenesulfonate in 1000mL of distilled water at 30-35°C, stir for 0.5 hours, add 5g of multi-walled carbon nanotubes with carboxyl groups on the surface, stir and sonicate at 30-35°C 1 hour, a stable suspension was obtained;

[0032] (2) 16.67g of natural rubber emulsion with a solid content of 60% is added to the suspension obtained in step (1), stirred and ultrasonicated for 1 hour at 30 to 35° C., so that the multi-walled carbon nanotubes are dispersed in the natural rubber emulsion to form a blend system, and then use 6% sulfuric acid aqueous solution to flocculate and precipitate the blended emulsion, filter under reduced pressure and vacuum dry at 60 ° C for 12 hours to obtain a masterbatch composed of multi-walled carbon nanotubes and natural rubber ;

[0033] (3) Mix 15g of the masterbatch obtained in step (2) with 2.0g of coupling agent Si69 at 50°C for 5 to 10 minutes. After the masterbatch completely absorbs the coupling ...

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Abstract

The invention provides a preparation method for a multiwalled carbon nanotube modified aircraft tire rubber material. The preparation method comprises the following steps: dispersing multiwalled carbon nanotubes into an anionic surfactant aqueous solution to obtain suspension liquid, adding natural rubber latex into the suspension liquid to enable the multiwalled carbon nanotubes to be dispersed in the natural rubber latex, and performing flocculation co-precipitation on mixed latex, filtering, and drying the mixed latex after flocculation co-precipitation so as to obtain rubber master batch composed of the multiwalled carbon nanotubes and the natural rubber latex, sequentially adding a coupling agent, rubber, carbon black, a vulcanizing agent and other components and carrying out low-temperature mixing to form a rubber compound, heating and vulcanizing the rubber compound to obtain the multiwalled carbon nanotube modified aircraft tire rubber material. The method provided by the invention is simple in process and low in production cost, and can prevent gathering of the multiwalled carbon nanotubes in rubber, and improve interface bonding between the multiwalled carbon nanotubes and the rubber; the multiwalled carbon nanotubes and carbon black play a synergistic reinforcing effect, so that the multiwalled carbon nanotube modified aircraft tire rubber material has higher mechanical properties, static conductivity, abrasion resistance, thermal conductivity and a relatively low dynamic heat generation property.

Description

technical field [0001] The invention belongs to the technical field of aviation tire material preparation, and in particular relates to a preparation method of multi-walled carbon nanotube modified aviation tire rubber material. technical background [0002] Aviation tires need to withstand high speed, high load and high impact during the rolling process of aircraft takeoff and landing, so the tire rubber materials used must have large modulus, tensile strength and tear strength, low heat generation and excellent wear resistance. The static electricity generated by the aircraft flying in the air and air friction will accumulate in the airframe. This static electricity must be quickly eliminated when it lands to ensure the safety of the onboard electronic equipment, fuel tank oil circuit and passengers. It must have electrostatic conductivity, and its surface resistance is less than 5×10 4 Ω. With the development of aviation technology, higher requirements are placed on ti...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L7/02C08K13/06C08K9/04C08K7/24C08K3/22C08K5/09C08K3/04B60C1/00
CPCC08L7/00B60C1/00C08K2201/011C08L2205/035
Inventor 许军李双鑫李钰吴瑶栗建钢
Owner CIVIL AVIATION UNIV OF CHINA
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