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Modification method of white carbon black

A white carbon black and modified technology, applied in the field of white carbon black, can solve the problems of rubber material loss performance and poor mechanical properties, and achieve the effect of improving mechanical properties and wear resistance, and improving surface area and dispersibility.

Active Publication Date: 2022-04-08
WUXI HENGCHENG SILICON IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This application provides a method for modifying white carbon black, which solves the problem of poor loss performance and mechanical properties of the obtained rubber material when white carbon black is used as a reinforcing agent for rubber materials

Method used

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  • Modification method of white carbon black
  • Modification method of white carbon black

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Embodiment 1

[0037] This embodiment provides a modification method of white carbon black, the modification method comprising:

[0038] (1) The silica dispersion, glycolic acid (mass concentration is 25%), silane coupling agent (silane coupling agent KH-550) are mixed to obtain the first liquid; the silica dispersion is white carbon Black is obtained by ultrasonic dispersion in ethanol; the content of silica in the silica dispersion is 62%; the addition of the glycolic acid is 11% of the mass of silica in the first liquid; The addition of the silane coupling agent is 20% of the mass of silica in the first liquid; the mixing is carried out under high temperature and high pressure; the mixing pressure is 60MPa; the mixing temperature is 170°C; The mixing time is 2h;

[0039] (2) react the first liquid that step (1) obtains with sodium lignosulfonate under protective atmosphere, obtain modified white carbon black through solid-liquid separation afterwards; The addition amount of described sod...

Embodiment 2

[0041] This embodiment provides a modification method of white carbon black, the modification method comprising:

[0042] (1) The silica dispersion, glycolic acid (mass concentration is 20%), silane coupling agent (silane coupling agent KH-560) are mixed to obtain the first liquid; the silica dispersion is white carbon Black is obtained by ultrasonic dispersion in methanol; the content of silica in the silica dispersion is 55%; the addition of the glycolic acid is 15% of the mass of silica in the first liquid; The addition of the silane coupling agent is 15% of the mass of silica in the first liquid; the mixing is carried out under high temperature and high pressure; the mixing pressure is 40MPa; the mixing temperature is 200°C; The mixing time is 0.5h;

[0043] (2) react the first liquid that step (1) obtains with potassium lignosulfonate under protective atmosphere, obtain modified white carbon black through solid-liquid separation afterwards; The addition amount of describ...

Embodiment 3

[0045] This embodiment provides a modification method of white carbon black, the modification method comprising:

[0046] (1) The silica dispersion, glycolic acid (mass concentration is 30%), silane coupling agent (silane coupling agent KH-570) are mixed to obtain the first liquid; the silica dispersion is white carbon Black is obtained by ultrasonic dispersion in ethanol; the content of silica in the silica dispersion is 70%; the addition of the glycolic acid is 7% of the mass of silica in the first liquid; The addition of the silane coupling agent is 25% of the mass of silica in the first liquid; the mixing is carried out under high temperature and high pressure; the mixing pressure is 80MPa; the mixing temperature is 150°C; The mixing time is 1h;

[0047] (2) react the first liquid that step (1) obtains with sodium lignosulfonate under protective atmosphere, obtain modified white carbon black through solid-liquid separation afterwards; The addition amount of described sodi...

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Abstract

The invention relates to a modification method of white carbon black. The modification method comprises the following steps: (1) mixing a white carbon black dispersion liquid, glycolic acid and a silane coupling agent to obtain a first liquid; and (2) reacting the first liquid obtained in the step (1) with lignosulfonate in a protective atmosphere, and then carrying out solid-liquid separation to obtain the modified white carbon black. According to the modification method provided by the invention, the specific modification reagent is matched with the reasonable preparation process, so that the modification of the white carbon black is realized, and the prepared white carbon black has good surface performance and dispersity. Meanwhile, the loss performance and the mechanical property of an obtained rubber material can be remarkably improved when the rubber reinforcing agent is used as a rubber reinforcing agent.

Description

technical field [0001] This application relates to the field of white carbon black, in particular to a method for modifying white carbon black. Background technique [0002] At present, due to its excellent performance such as microstructure and surface properties, silica has gradually replaced carbon black in rubber products. [0003] Disclosed a kind of modified white carbon black reinforced rubber tire material and preparation method thereof as CN111171410A, described modified white carbon black reinforced rubber tire material is made of solution polystyrene butadiene rubber, rare earth butadiene rubber, butadiene rubber, modified white carbon black It is prepared from carbon black, starch nanocrystals, cellulose acetate, calcium oxide, anti-slip agent, nano zinc oxide, stearic acid, anti-aging agent, accelerator, and vulcanizing agent, and the preparation of the modified white carbon black reinforced rubber tire material The steps include: preparation of modified white ...

Claims

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Application Information

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IPC IPC(8): C09C1/28C09C1/30C09C3/04C09C3/08C09C3/10C09C3/12C08K9/04C08K9/06C08K7/26
CPCY02T10/86C09C3/04C09C1/30C08K7/26C09C3/08C08K9/04C09C1/28C09C3/10C08K9/06C09C3/12
Inventor 陈南飞卢爱平王明贺陈辰陈家树史彤
Owner WUXI HENGCHENG SILICON IND CO LTD
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