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Preparation method of hydrophobic white carbon black

A white carbon black and hydrophobicity technology, which is applied in the field of preparation of hydrophobic white carbon black, can solve the problems of cumbersome preparation methods and reduced processing performance of white carbon black, and achieve long reaction time, good technical economy, and reinforcement The effect of performance improvement

Active Publication Date: 2018-02-13
WUXI HENGCHENG SILICON IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this scheme is that its preparation method is cumbersome and may reduce the processing performance of silica when it is applied to rubber

Method used

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  • Preparation method of hydrophobic white carbon black
  • Preparation method of hydrophobic white carbon black
  • Preparation method of hydrophobic white carbon black

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The present embodiment provides a kind of preparation method of hydrophobic white carbon black, and its specific method is:

[0051] (1) Add silane coupling agent A151, absolute ethanol, n-heptane, dichloromethane and distilled water into the beaker according to the volume ratio of 1:2:1:0.1:1, and place the beaker on a magnetic stirrer Stir at 25° C. for 30 minutes to carry out the hydrolysis reaction to obtain the hydrolyzate of the silane coupling agent A151.

[0052] (2) silane coupling agent A151 hydrolyzate is mixed evenly with 200g white carbon black (the mass of silane coupling agent A151 and the white carbon black mass ratio are 9.5:100, m 硅烷偶联剂A151 =19g), the white carbon black-silane coupling agent mixture is placed in an oven, ventilated and dried at 35°C for 2h to remove the ethanol therein, and then the modification reaction is carried out at a temperature of 50°C, and the modification reaction time is 20min, A hydrophobic precipitated silica is obtained....

Embodiment 2

[0055] The present embodiment provides a kind of preparation method of hydrophobic white carbon black, and its specific method is:

[0056] (1) Add silane coupling agent A151, absolute ethanol, n-heptane, dichloromethane and distilled water into the beaker according to the volume ratio of 1:2:1:0.5:1, and place the beaker on a magnetic stirrer Stir at 35° C. for 30 minutes to carry out the hydrolysis reaction to obtain the hydrolyzate of the silane coupling agent A151.

[0057] (2) silane coupling agent A151 hydrolyzate is mixed evenly with 200g white carbon black (the mass of silane coupling agent A151 and the white carbon black mass ratio are 12.5:100, m 硅烷偶联剂A151 =25g), the white carbon black-silane coupling agent mixture is placed in an oven, ventilated and dried at 35°C for 2h to remove the ethanol therein, and then the modification reaction is carried out at a temperature of 85°C, and the modification reaction time is 60min, A hydrophobic precipitated silica is obtained...

Embodiment 3

[0060] The present embodiment provides a kind of preparation method of hydrophobic white carbon black, and its specific method is:

[0061] (1) Add silane coupling agent A151, absolute ethanol, n-heptane, dichloromethane and distilled water into the beaker according to the volume ratio of 1:2:1:0.2:1, and place the beaker on a magnetic stirrer Stir at 45° C. for 30 minutes to carry out the hydrolysis reaction to obtain the hydrolyzate of the silane coupling agent A151.

[0062] (2) silane coupling agent A151 hydrolyzate is mixed evenly with 200g white carbon black (the mass of silane coupling agent A151 and the mass ratio of white carbon black are 15.5:100, m 硅烷偶联剂A151 =31g), the white carbon black-silane coupling agent mixture is placed in an oven, ventilated and dried at 35°C for 2h to remove the ethanol therein, and then the modification reaction is carried out at a temperature of 110°C, and the modification reaction time is 90min, A hydrophobic precipitated silica is obta...

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Abstract

The invention provides a preparation method of hydrophobic white carbon black. The preparation method includes following steps: 1), allowing hydrolysis reaction: mixing silane coupling agent-vinyltriethoxysilane, organic solvent and water for hydrolysis reaction to obtain silane coupling agent hydrolysate, wherein the organic solvent comprises n-heptane and alcohol; 2), allowing modifying reaction: using an atomizer to atomize the silane coupling agent hydrolysate obtained in the step 1), mixing with white black carbon, drying an obtained mixture, and heating for modifying reaction to obtain the hydrophobic white carbon black. The preparation method is simple in preparation process, little in equipment investment, short in production period, high in labor production efficiency and easy forindustrialization and has high technical economic efficiency; the hydrophobic white carbon black is good in mechanical performance and high in hydrophobicity and can well improve processability of rubber when being applied to butadiene styrene rubber, vulcanizing time is shortened, mechanical performance of vulcanized rubber is improved, and wear resistance of rubber is enhanced.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic materials, and in particular relates to a preparation method of hydrophobic white carbon black. Background technique [0002] As an inorganic filler, precipitated silica has many excellent properties, including porosity, good dispersion, non-combustibility, good chemical stability, etc., so it is widely used as a filler or reinforcing agent in toothpaste, coatings, paints, Plastic, rubber, etc. In particular, precipitated silica plays an important role in the rubber industry, and about 70% of precipitated silica is used in it. Because it is an excellent rubber reinforcing agent, it is more widely used in the tire rubber industry. As a reinforcing agent, precipitated silica can improve the mechanical properties of tire rubber and reduce its rolling resistance. With the increasing awareness of environmental protection and energy saving, tire manufacturers gradually use precipitated silica to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K3/36C08L9/06
CPCC08K3/36C08K9/06C08L9/06C08L71/02C08K13/06
Inventor 陈南飞卢爱平王明贺
Owner WUXI HENGCHENG SILICON IND CO LTD
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