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Preparation method of hydrophobic white carbon black

A silica and hydrophobic technology, applied in the field of preparation of hydrophobic silica, can solve problems such as poor modification effect, and achieve the effect of improving modification effect and improving hydrophobicity

Pending Publication Date: 2021-07-23
SANMING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing hydrophobic white carbon black has the problem of poor modification effect in the preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh vinyltrimethoxysilane and vinyltriethoxysilane and mix them in a ratio of 1:1 to obtain a silane coupling agent;

[0025] Weigh the silane coupling agent, dichloromethane, and dilute sulfuric acid with a concentration of 10% according to the following weight ratio of 10:1:3; mix and stir the silane coupling agent, dichloromethane, and dilute sulfuric acid at a temperature of 80°C for 1 hour get modifiers;

[0026] Weigh each component according to the following parts by weight: 2 parts of alkylphenol polyoxyethylene ether, 10 parts of modifier, 2 parts of fatty acid methyl ester polyoxyethylene ether, 3 parts of tridecafluorooctyl triethoxysilane , 60 parts of white carbon black; pour the alkylphenol polyoxyethylene ether and the modifier into the mixing tank and mix evenly at a high speed of 5000r / min; pour the white carbon black into the mixing tank at 50°C Stir and mix at a medium speed of 4000r / min for 0.5h; pour fatty acid methyl ester polyoxyethylene ether ...

Embodiment 2

[0028] Weigh vinyltrimethoxysilane and vinyltriethoxysilane and mix them in a ratio of 1:1 to obtain a silane coupling agent;

[0029] Weigh the silane coupling agent, dichloromethane, and dilute sulfuric acid with a concentration of 25% according to the following weight ratio of 10:5:5; mix and stir the silane coupling agent, dichloromethane, and dilute sulfuric acid at a temperature of 95°C for 1- Obtain modifier after 1.5h;

[0030] Weigh each component according to the following parts by weight: 8 parts of alkylphenol polyoxyethylene ether, 25 parts of modifier, 5 parts of fatty acid methyl ester polyoxyethylene ether, 6 parts of tridecafluorooctyl triethoxysilane 100 parts of white carbon black; Pour the alkylphenol polyoxyethylene ether and modifier into the mixing tank and mix evenly at a high speed of 6000r / min; Pour the white carbon black into the mixing tank at 90°C Stir and mix at a medium speed of 5000r / min for 1h; pour fatty acid methyl ester polyoxyethylene ethe...

Embodiment 3

[0032] Weigh vinyltrimethoxysilane and vinyltriethoxysilane and mix them in a ratio of 1:1 to obtain a silane coupling agent;

[0033] Weigh the silane coupling agent, dichloromethane, and dilute sulfuric acid with a concentration of 17% according to the following weight ratio of 10:3:4; mix and stir the silane coupling agent, dichloromethane, and dilute sulfuric acid at a temperature of 87°C for 1.75h After obtaining modifier;

[0034] Weigh each component according to the following parts by weight: 6 parts of alkylphenol polyoxyethylene ether, 17 parts of modifier, 3.5 parts of fatty acid methyl ester polyoxyethylene ether, 4.5 parts of tridecafluorooctyl triethoxysilane , 80 parts of white carbon black; pour the alkylphenol polyoxyethylene ether and the modifier into the mixing tank and mix evenly at a high speed of 5500r / min; pour the white carbon black into the mixing tank at 70°C Stir and mix at a medium speed of 4500r / min for 0.75h; pour fatty acid methyl ester polyoxy...

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PUM

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Abstract

The invention discloses a preparation method of hydrophobic white carbon black. The preparation method comprises the following steps: weighing the following components in parts by weight: 2-8 parts of an emulsifier, 10-25 parts of a modifier, 2-5 parts of a nonionic surfactant, 3-6 parts of a fluorine-containing high-molecular polymer and 60-100 parts of white carbon black; pouring the emulsifier and the modifier into a mixing barrel, and uniformly mixing at a high rotating speed; and pouring the white carbon black into a mixing barrel, and stirring and mixing for 0.5-1 hour at a medium rotating speed in an environment of 50-90 DEG C. The modifier composed of the silane coupling agent, dichloromethane and dilute sulphuric acid is added to modify the white carbon black, the silane coupling agent performs surface grafting modification treatment on the white carbon black, and the dilute sulphuric acid performs acidification treatment on the modifier and a modification environment, so that the modification effect on the white carbon black is improved, and the hydrophobicity of the white carbon black is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic materials, in particular to a preparation method of hydrophobic white carbon black. Background technique [0002] White carbon black is a light hydrated silica material, which exists in the form of amorphous microporous powder, and is an important chemical product with a wide range of uses. Silica has a large specific surface area, usually greater than 130m2 / g. The powder particles have a large number of microporous structures, and the surface is rich in hydroxyl groups. It has good adsorption, flame retardancy, insulation, suspension, vibration liquefaction, thixotropy, light scattering, Surface graft modification and other characteristics, its significant reinforcing effect has gained important applications in the field of rubber product processing. [0003] The existing hydrophobic white carbon black has the problem of poor modification effect during the preparation process. ...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08K9/04C08K9/02C08K7/26
CPCC08K9/06C08K9/04C08K9/02C08K9/08C08K7/26
Inventor 林福星张建汉念保义罗菊香林碧凡
Owner SANMING UNIV
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