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Coupling agent for carbon black, and preparation method and application thereof

A technology of coupling agent and mercaptosilane coupling agent, which is applied in the field of materials, can solve the problems of tediousness and difficulty in large-scale promotion and use

Active Publication Date: 2021-09-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN1935888A reports the use of a continuous liquid phase mixing method to prepare rubber nanocomposites, but this method requires brand new equipment and cannot be modified with existing equipment, making it difficult to promote and use it on a large scale
[0008] Chinese patent CN109749129A reports the use of a multi-functional silane coupling agent containing siloxyl and amino groups that can modify carbon black and silica at the same time, and is used in carbon black / silica / rubber nanocomposites It can improve the modulus stress and elongation at break of the material, and reduce energy consumption, but the synthesis method involves multi-step processing of the material, which is cumbersome

Method used

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  • Coupling agent for carbon black, and preparation method and application thereof
  • Coupling agent for carbon black, and preparation method and application thereof
  • Coupling agent for carbon black, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 238g γ-mercaptopropyltriethoxysilane, a commercial product produced by BASF, and 89g 4-amino-1-butanol, a commercial product produced by Shanghai Panhong Chemical Technology Co., Ltd., were put into a mixing device and In the 500ml three-necked flask of the distillation device, the molar ratio of feeding is 1:1, no catalyst is added, and the reaction is stirred at a temperature of 120°C. Ethanol is continuously produced under the action of nitrogen, and the reaction lasts for 40 hours. After the reaction, the product was rotary evaporated at 80°C and 50mbar to remove unreacted monomers and small molecules to obtain R 1 for C 4 h 8 , R 2 for C 3 h 6 , n=2, X=1 yellow liquid, ethanol 20.8g, yield 45.2%. The resulting carbon black is named 4-0-M with a coupling agent 1 -KH580.

Embodiment 2

[0052] Put 238g of γ-mercaptopropyltriethoxysilane and 178g of 4-amino-1-butanol into a 1000ml three-necked flask equipped with a stirring device and a distillation device, the molar ratio of feeding: 1:2, and add 12.5g of titanium N-butyl acid was used as a catalyst, and the reaction was stirred at a temperature of 110°C. Under the action of nitrogen, ethanol was continuously produced, and the reaction was completed until no ethanol fraction was produced, and the reaction continued for 6 hours. After the reaction, the product was rotary evaporated at 80°C and 50mbar to remove unreacted monomers and small molecules to obtain R 1 for C 4 h 8 , R 2 for C 3 h 6 , n=2, X=2 yellow liquid, ethanol 91.2g, yield 99.1%. The resulting carbon black is named 4-0-M with a coupling agent 2 -KH580.

Embodiment 3

[0054] Put 238g of γ-mercaptopropyltriethoxysilane and 267g of 4-amino-1-butanol into a 1000ml three-necked flask equipped with a stirring device and a distillation device, and the molar ratio of the feed: 1:3, and add 15.2g of Toluenesulfonic acid was used as a catalyst, and the reaction was stirred at a temperature of 110°C. Under the action of nitrogen, ethanol was continuously produced, and the reaction was completed until no ethanol fraction was produced, and the reaction continued for 12 hours. After the reaction, the product was rotary evaporated at 80°C and 50mbar to remove unreacted monomers and small molecules to obtain R 1 for C 4 h 8 , R 2 for C 3 h 6 , n=2, X=3 yellow liquid, ethanol 129g, yield 93.5%. The resulting carbon black is named 4-0-M with a coupling agent 3 -KH580.

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Abstract

The invention relates to a coupling agent for carbon black. The coupling agent for carbon black is an amphiphilic coupling agent containing sulfydryl and amino at the same time, can effectively improve the dispersion degree of carbon black in a rubber / carbon black nano composite material, can construct chemical bonding between carbon black / rubber molecular chains, does not generate VOC emission in the use process, improves the dynamic performance of the carbon black / rubber nano composite material, reduces the friction among carbon black particles and the friction between the carbon black particles and a rubber molecular chain, effectively reduces the loss of the material, and reduces the rolling resistance.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a coupling agent for carbon black, and a preparation method and application of the coupling agent. Background technique [0002] Carbon black is the most widely used reinforcing agent in rubber nanocomposites. The strength of rubber reinforced with carbon black is greatly improved, and the wear resistance is good. The excellent wear resistance of rubber / carbon black nanocomposites makes it widely used in the tire industry. However, with the rise in international crude oil prices in recent years, pollution and environmental protection issues have gradually attracted people's attention. [0003] In the traditional carbon black / rubber nanocomposite formulation, carbon black is broken and dispersed in the rubber matrix by the shear force of the mixing equipment during the mixing stage, and is combined with the rubber molecular chain by van der Waals force and physical adsorption...

Claims

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Application Information

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IPC IPC(8): C08K9/10C08K9/06C08K3/04C08L9/06C08L91/06C08K13/06C08L7/00C07F7/18
CPCC08K9/10C08K9/06C08K3/04C08L9/06C07F7/188C08L2205/025C08L2205/03C08L91/06C08K13/06C08L7/00Y02T10/86
Inventor 吴晓辉李旻曹劲楠张立群姚红
Owner BEIJING UNIV OF CHEM TECH
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