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Preparation method of nano carbon black

A technology of nano-carbon black and coupling agent, which is applied in chemical instruments and methods, fibrous fillers, dyed polymer organic compound treatment, etc., and can solve problems such as poor compatibility and dispersibility, and limitations in the application field of functional requirements. , to achieve good hydrophobicity, good compatibility and dispersion, and improve processing performance and mechanical properties

Pending Publication Date: 2022-03-15
HENAN JUNHUA DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nano-carbon black has the characteristics of large specific surface area, small particle size, good chemical stability, high temperature resistance and good electrical insulation performance. It is widely used in rubber, tires, adhesives, coatings, plastics and other industries, but its surface contains A large number of active silanol groups are easy to absorb water and aggregate into particles, resulting in poor compatibility and dispersion in the polymer matrix, which is limited in some application fields with functional requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A certain amount of nano-carbon black is dispersed in water to prepare 2000g of nano-carbon black suspension with a mass concentration of 10%.

[0018] A preparation method for nano carbon black, comprising the following steps:

[0019] 1) Take 10g of the coupling agent (γ-aminopropyltriethoxysilane), mix the coupling agent, absolute ethanol and water in a volume ratio of 1:3:1 for hydrolysis reaction, and obtain the modified coupling agent liquid;

[0020] 2) Add step 1) coupling agent modification solution to 2000g of nano-carbon black suspension, and stir for 1.5h at 60°C with a stirring speed of 300 rpm; then add 2g of alkylphenol polyoxyethylene ether and 6g of Tridecafluorooctyltriethoxysilane was stirred at 70°C for 2 hours at the same stirring speed as above to obtain a composite modified nano-carbon black suspension;

[0021] 3) Filtering, drying and pulverizing the composite modified nano-carbon black suspension in step 2) to obtain nano-carbon black.

Embodiment 2

[0023] A certain amount of nano-carbon black is dispersed in water to prepare 1600g of nano-carbon black suspension with a mass concentration of 15%.

[0024] A preparation method for nano carbon black, comprising the following steps:

[0025] 1) Take 12g of coupling agent (N-2-(aminoethyl)-3 aminopropylmethyldimethoxysilane), mix the coupling agent, n-butanol and water in a volume ratio of 1:4:1 Carry out the hydrolysis reaction to obtain the coupling agent modified liquid;

[0026] 2) Add step 1) coupling agent modification solution to 1600g nano carbon black suspension, stir at 70°C and stirring speed of 100 rpm for 2.5h; add 3g of fatty alcohol polyoxyethylene ether and 7g of ten Heptafluorodecyltripropoxysilane was stirred at 75° C. at the same stirring speed as above for 1 h to obtain a composite modified nano-carbon black suspension;

[0027] 3) Filtering, drying and pulverizing the composite modified nano-carbon black suspension in step 2) to obtain nano-carbon black...

Embodiment 3

[0029] A certain amount of nano-carbon black is dispersed in water to prepare 2400g of nano-carbon black suspension with a mass concentration of 12%.

[0030] A preparation method for nano carbon black, comprising the following steps:

[0031] 1) Take 15g of the coupling agent (γ-aminopropyldiethoxysilane), mix the coupling agent, cyclohexane and water in a volume ratio of 1:5:1 for hydrolysis reaction, and obtain the modified coupling agent liquid;

[0032] 2) Add step 1) coupling agent modification solution to 2400g nano carbon black suspension, stir for 2h at 55°C, stirring speed is 150 rpm; add 4g fatty acid methyl ester polyoxyethylene ether and 8g nine Fluorobutyl methyl ether, at 75 ° C, under the same rotation speed, stirred for 3 hours to obtain a composite modified nano-carbon black suspension;

[0033] 3) Filtering, drying and pulverizing the composite modified nano-carbon black suspension in step 2) to obtain nano-carbon black.

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PUM

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Abstract

The invention belongs to the technical field of preparation of nano carbon black, and particularly relates to a preparation method of nano carbon black, which comprises the following steps: mixing a coupling agent, a solvent and water to obtain a coupling agent modified liquid; adding the coupling agent modified liquid into the nano carbon black suspension, and stirring at 50-90 DEG C for 0.5-24 hours; adding a surfactant and a high-molecular polymer, and stirring at 40-95 DEG C for 0.5-20 hours to obtain a composite modified nano carbon black suspension; and filtering, drying and crushing the composite modified nano carbon black suspension to obtain the nano carbon black.

Description

technical field [0001] The invention belongs to the technical field of preparation of nano carbon black, and in particular relates to a preparation method of nano carbon black. Background technique [0002] Nano-carbon black has the characteristics of large specific surface area, small particle size, good chemical stability, high temperature resistance and good electrical insulation performance. It is widely used in rubber, tires, adhesives, coatings, plastics and other industries, but its surface contains A large number of active silanols are easy to absorb water and aggregate into particles, resulting in poor compatibility and dispersion in the polymer matrix, which is limited in some application fields with functional requirements. Contents of the invention [0003] The purpose of the present invention is to provide a kind of preparation method of nano carbon black. [0004] Based on the above-mentioned purpose, the present invention takes the following technical solut...

Claims

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Application Information

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IPC IPC(8): C09C1/56C09C3/10C09C3/12C08K3/04C08K9/06
CPCC09C1/56C09C3/12C09C3/10C09C3/006C08K9/06C08K3/04C08K2201/011
Inventor 王恩伟李冬孙浩杰
Owner HENAN JUNHUA DEV
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