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A kind of white carbon black that improves rubber processing performance and preparation method thereof

A white carbon black and reaction technology, applied in chemical instruments and methods, silicon compounds, inorganic chemistry, etc., can solve the problems of poor processing performance and achieve the effect of improving processing performance

Active Publication Date: 2020-02-07
WUXI HENGCHENG SILICON IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The white carbon black provided by the invention can improve the processing performance of rubber without reducing the mechanical properties of rubber, and is especially suitable for tire rubber, solving the problem of poor processing performance of traditional white carbon black in tire rubber, and the preparation process is simple, There is no need to add additional modifiers, and it has good technical and economical efficiency

Method used

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  • A kind of white carbon black that improves rubber processing performance and preparation method thereof
  • A kind of white carbon black that improves rubber processing performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The present embodiment provides a kind of method for preparing white carbon black, and its specific method is:

[0062] (1) Preparation of reaction bottom liquid: add water to the reaction kettle, use oil bath heating to control the temperature of water at 81°C, add water glass solution, and prepare a reaction bottom liquid with a water glass concentration of 0.1mol / L; wherein, the preparation reaction During the whole process of the bottom liquid, the temperature is constant and at 81°C;

[0063] (2) The first step reaction: add concentrated sulfuric acid and water glass solution in the reaction bottom liquid of step (1), carry out reaction; Wherein, in the whole synthesis reaction stage, reaction temperature remains constant, and is identical with the temperature of reaction bottom liquid , and keep the water glass concentration of the reaction system constant, and the same as the water glass concentration of the reaction bottom liquid, the whole first step reaction t...

Embodiment 2

[0069] The present embodiment provides a kind of method for preparing white carbon black, and its specific method is:

[0070] (1) Preparation of reaction bottom liquid: add water to the reaction kettle, use oil bath heating to control the temperature of water at 75°C, add water glass solution, and prepare a reaction bottom liquid with a water glass concentration of 0.5mol / L; wherein, the preparation reaction During the whole process of the bottom liquid, the temperature is constant and at 75°C;

[0071] (2) The first step reaction: add concentrated sulfuric acid and water glass solution in the reaction bottom liquid of step (1), carry out reaction; Wherein, in the whole synthesis reaction stage, reaction temperature remains constant, and is identical with the temperature of reaction bottom liquid , and keep the water glass concentration of the reaction system constant, and the same as the water glass concentration of the reaction bottom liquid, the whole first step reaction t...

Embodiment 3

[0077] The present embodiment provides a kind of method for preparing white carbon black, and its specific method is:

[0078] (1) Preparation of reaction bottom liquid: add water to the reaction kettle, use oil bath heating to control the temperature of water at 99°C, add water glass solution, and prepare a reaction bottom liquid with a water glass concentration of 0.01mol / L; wherein, the preparation reaction During the whole process of the bottom liquid, the temperature is constant and at 99°C;

[0079] (2) The first step reaction: add concentrated sulfuric acid and water glass solution in the reaction bottom liquid of step (1), carry out reaction; Wherein, in the whole synthesis reaction stage, reaction temperature remains constant, and is identical with the temperature of reaction bottom liquid , and keep the water glass concentration of the reaction system constant, and the same as the water glass concentration of the reaction bottom liquid, the whole first step reaction ...

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Abstract

The invention provides white carbon black capable of improving the processing performance of rubber and a preparation method of the white carbon black. The preparation method comprises the following steps: (1) heating water, adding water glass, and mixing the water with the water glass to obtain a reaction base solution, wherein the temperature in the whole process does not change; (2) adding acidand water glass into the reaction base solution for mixing and reaction, wherein the reaction temperature and the concentration of the water glass are constant, and are equal to the reaction temperature and the concentration of the water glass in the reaction bottom solution; (3) adjusting the pH of a reaction system; (4) adding acid and water glass for mixing and reaction, wherein the pH of thereaction system is 7.0 to 10.0 and is constant, and the reaction temperature is constant and is equal to that of the reaction base solution; (5) adding acid to adjust the pH till the pH is equal to the pH of aging reaction and the temperature is constant and equal to that of the reaction base solution; (6) carrying out aging reaction on white carbon black suspension under a condition that the temperature is equal to that of the reaction base solution, and then carrying out solid-liquid separation to obtain the white carbon black. The white carbon black provided by the invention can improve theprocessing performance of the rubber on the basis of not reducing the mechanical property of the rubber.

Description

technical field [0001] The invention belongs to the technical field of white carbon black preparation, and relates to a white carbon black for improving rubber processing performance and a preparation method thereof, in particular to a white carbon black and a white carbon black for improving rubber processing performance without reducing the mechanical properties of rubber. Preparation. Background technique [0002] Silica is widely used in food, toothpaste, coatings, plastics, rubber and other industries due to its many excellent properties. Among them, as an excellent rubber reinforcing agent, it is the most widely used in the rubber industry, accounting for about 90% of the total amount of silica. 70%, due to the excellent reinforcing performance of silica, it is especially used in tire tread rubber. Compared with traditional carbon black reinforced tire rubber, the tire rubber reinforced by silica not only prolongs the service life, but also controls The most important...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/193C08K3/36C08L9/06
CPCC01B33/193C01P2006/12C01P2006/19C08K3/36C08L9/06
Inventor 陈南飞卢爱平王明贺
Owner WUXI HENGCHENG SILICON IND CO LTD
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