Preparation method of modified carbon black/TPI (trans-1,4-polyisoprener)/rubber composite material for green tires

A green tire and modified carbon black technology, which is applied in special tires, tire parts, rolling resistance optimization, etc., can solve the problems of large surface energy, long processing time, and easy agglomeration, so as to improve rolling resistance and compatibility sexual effect

Inactive Publication Date: 2016-04-06
付文 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small particle size of carbon black, large surface energy, and easy agglomeration, it takes a long time to disperse in the rubber matrix, and the filling is slow, resulting in long processing time and high energy consumption; compatibility issues
As a polar reinforcing agent, carbon black has incompatibility problems when it is added to commonly used non-polar or weakly polar rubber such as natural rubber, styrene-butadiene rubber and butadiene rubber, which affects the overall strength of the composite material. strength and performance

Method used

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  • Preparation method of modified carbon black/TPI (trans-1,4-polyisoprener)/rubber composite material for green tires

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Preparation of grafted modified carbon black:

[0020] (1) Add 50g carbon black and 300ml concentrated nitric acid into a three-necked flask, stir mechanically, heat in an oil bath, and react at 80°C for 10 hours. After the reaction is over, cool to room temperature, filter, and repeatedly wash with deionized water until the filtrate is neutral. Finally, the filter residue is dried at 75°C to obtain the product;

[0021] (2) Add 50g of the product obtained in step (1) and 12.5g of thionyl chloride into a three-necked flask, with toluene as the solvent, mechanical stirring, add 5 drops of triethylamine as acid binding agent, react in an ice bath for 30 minutes, and heat to 120°C Continue the reaction for 30 minutes, and the reaction product is rotary evaporated at 80°C to remove the unreacted thionyl chloride to obtain the product;

[0022] (3) Add 50g of the product obtained in step (2) into 25g polyethylene glycol 400, with toluene as the solvent, add 5 drops of dibutyltin ...

Embodiment 2

[0026] Preparation of grafted modified carbon black:

[0027] (1) Add 50g carbon black and 300ml hydrogen peroxide into a three-necked flask, stir mechanically, heat in an oil bath, and react at 80°C for 10 hours. After the reaction is over, cool to room temperature, filter, and repeatedly wash with deionized water until the filtrate is neutral. Finally, the filter residue is dried at 75°C to obtain the product;

[0028] (2) Add 50g and 18g toluene diisocyanate obtained in step (1) into a three-necked flask, with toluene as solvent, mechanical stirring, add 5 drops of triethylamine as acid binding agent, react in ice bath for 30min, heat to 120℃ to continue the reaction 30min, the reaction product was rotated at 80°C to remove unreacted toluene isocyanate, and the product was obtained;

[0029] (3) Add 50g of the product obtained in step (2) into 25g polyethylene glycol 400, with toluene as the solvent, add 5 drops of dibutyltin dilaurate as a catalyst, react in an ice bath for 30 ...

Embodiment 3

[0033] Preparation of grafted modified carbon black:

[0034] (1) Add 50g carbon black and 300ml concentrated nitric acid into a three-necked flask, stir mechanically, heat in an oil bath, and react at 80°C for 10 hours. After the reaction is over, cool to room temperature, filter, and repeatedly wash with deionized water until the filtrate is neutral. Finally, the filter residue is dried at 75°C to obtain the product;

[0035] (2) Add 50g of the product obtained in step (1) and 12.5g of thionyl chloride into a three-necked flask, with toluene as the solvent, mechanical stirring, add 5 drops of triethylamine as acid binding agent, react in an ice bath for 30 minutes, and heat to 120°C Continue the reaction for 30 minutes, and the reaction product is rotary evaporated at 80°C to remove the unreacted thionyl chloride to obtain the product;

[0036] (3) Add 50g of the product obtained in step (2) into 25g polyethylene glycol 400, with toluene as the solvent, add 5 drops of dibutyltin ...

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Abstract

The invention discloses a method for preparing a green tire by combining graft-modified carbon black and TPI (trans-1,4-polyisoprener) and improving properties of natural rubber (or synthetic rubber). The preparation method comprises the following steps: adding the natural rubber ( or synthetic rubber), TPI, graft-modified carbon black and other small materials into an open mill or Banbury mixer, compounding uniformly, and vulcanizing the compounded rubber by pressurization and heating to obtain the product. The method is characterized by integrating low rolling resistance and low dynamic heat generation of the graft-modified carbon black in rubber with high wear resistance and high flexing resistance of the TPI in rubber. The rubber composite material prepared by the method can obtain favorable comprehensive properties. The tensile strength of the vulcanized rubber is greater than 27.0 MPa; the 300% stress at definite elongation is greater than 9.8 MPa; the tearing strength is greater than 65.3 kN / m; the elongation at break is greater than 609%; and the Grade 2 and Grade 6 flexing resistance respectively reach 53 thousand and 127 thousand times.

Description

Technical field [0001] The invention relates to a method for preparing a modified carbon black / TPI / rubber composite material for green tires, and belongs to the technical field of rubber. Background technique [0002] With the strengthening of environmental protection awareness, the preparation of "green tires" with low rolling resistance, good wet skid resistance, low fuel consumption and low exhaust emissions has attracted more and more attention. Studies have found that the fuel consumed by tire rolling resistance accounts for 15-20% of the total fuel consumption of automobiles. Studies have shown that the use of carbon black in tread rubber is one of the effective methods to reduce tire rolling resistance and improve wet skid resistance and wear resistance. . However, due to the small particle size, large surface energy, and easy agglomeration of carbon black, it takes a long time to disperse in the rubber matrix, and the slow intake of fillers leads to long processing time ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L9/06C08K13/06C08K9/04C08K3/04C08K3/22C08K5/09B60C1/00
CPCB60C1/00C08L7/00C08L2205/02C08L2205/025C08L2205/035C08L9/00C08K13/06C08K9/04C08K3/04C08K2003/2296C08K5/09C08L9/06Y02T10/86
Inventor 付文王丽苏绍昌
Owner 付文
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