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Method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding white carbon black with rubber

A polyoxyethylene ether and silica technology, which is applied in the field of inorganic nano-powder modification, can solve the problems of incompatibility between silica and rubber, and prone to agglomeration.

Active Publication Date: 2017-06-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of a large number of silanol groups on the surface of silica, it is very easy to agglomerate among the primary particles, and it will also make silica and rubber incompatible.

Method used

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  • Method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding white carbon black with rubber
  • Method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding white carbon black with rubber
  • Method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding white carbon black with rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Take silica K160 powder and water and stir and mix at a mass percentage of 10:90, and further use high-speed stirring to stir the silica suspension at a speed of 5000rpm for 8 hours to obtain uniform and stable silica‐ Water suspension, the dispersion state of silica in water is good. Take 500g of the silica-water suspension, heat in a water bath while stirring (500rpm) in a beaker, to 50°C, and ensure that the temperature is stable. Add 5 g of aliphatic polyoxyethylene ether (AEO-9) to this silica-water suspension, keep the water bath and stir (500 rpm), and allow it to react for 2 hours. The modified white carbon black suspension is spray-dried and dehydrated to obtain dry organic modified white carbon black powder. The powder was extracted by organic solvent for thermal gravimetric and infrared analysis, and compared with the thermal gravimetric and infrared results of unmodified silica, so as to determine the aliphatic polyoxyethylene ether (AEO‐9) grafted On the ...

Embodiment 2

[0056] Take silica K160 powder and water and stir and mix at a mass percentage of 10:90, and further use high-speed stirring to stir the silica suspension at a speed of 5000rpm for 8 hours to obtain uniform and stable silica‐ Water suspension, the dispersion state of silica in water is good. Take 1000g of the silica-water suspension, heat in a water bath while stirring (500rpm) in a beaker, to 40°C, and ensure that the temperature is stable. 13 g of aliphatic polyoxyethylene ether (AEO-7) was added to this silica-water suspension, and it was made to react for 3 hours while maintaining a water bath and stirring (500 rpm). The modified white carbon black suspension is spray-dried and dehydrated to obtain dry organic modified white carbon black powder. Get this white carbon black powder body 55g, add in the banbury mixer and blend with natural rubber, the obtained natural rubber / modified natural rubber / modified that white carbon black content is 50phr (being that white carbon bl...

Embodiment 3

[0058] Take the suspension slurry of silica Z2000 and mix it with water, adjust the solid mass of silica to 15% of the total mass of the suspension and stir and mix, and further stir the suspension of silica at a speed of 3500rpm for 5 hours to obtain a uniform , Stable silica-water suspension, the dispersion state of silica in water is good. Take 1000g of the silica-water suspension, heat in a water bath while stirring (500rpm) in a beaker, to 45°C, and ensure that the temperature is stable. To this silica-water suspension, 15 g of aliphatic polyoxyethylene ether (AEO-12) was added, kept in a water bath (500 rpm) and stirred, and allowed to react for 4 hours. The modified white carbon black suspension is dehydrated by spray drying to obtain dry aliphatic polyoxyethylene ether modified white carbon black powder. Get this white carbon black powder 77g, divide and join in the emulsion polystyrene butadiene rubber through masticating on the open mill 5 times, make the white carb...

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Abstract

The invention provides a method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding the white carbon black with rubber and relates to the field of application of the aliphatic polyoxyethylene ether to white carbon black modification, hoping to achieve the aims of modifying the white carbon black under the condition of no VOC emission by adopting a cheap and available modifying agent and enabling the modified white carbon black to be well dispersed as filler in a rubber matrix. The modification method is characterized in that chemical bonding and physical adsorption effect are utilized for bonding the white carbon black with 1-100% by mass of the aliphatic polyoxyethylene ether, so that the modified white carbon black is prepared. Preparation steps are as follows: white carbon black suspension is prepared, temperature of the suspension is adjusted, the white carbon black is modified, and the modified white carbon black is dried. The modified white carbon black has the advantages that particle size is reduced and hydrophobicity is obviously improved. Meanwhile, the modified white carbon black can be compounded with multiple rubbers in multiple ways, the white carbon black is uniformly distributed in the prepared rubber / modified white carbon black composite material, and all the performances of the composite material can be obviously improved compared with rubber / unmodified white carbon black.

Description

technical field [0001] The present application relates to the technical field of inorganic nano powder modification, and more specifically relates to a method for organic modification of white carbon black and its blending with rubber. Background technique [0002] Silica is hydrated silicon dioxide (SiO 2 -nH 2 O) commonly known as its primary particle size between 10-40nm. Silica is a commonly used reinforcing filler in the rubber field. It can effectively reduce the hysteresis of the rubber while improving the physical and mechanical properties of the rubber. As a filler, these characteristics are used in the preparation of energy-saving and environmentally friendly "green tire" treads. Glue is irreplaceable. Therefore, the use of silica as a reinforcing system to prepare rubber composites has gradually attracted people's attention. In recent years, the amount of silica used in reinforcing rubber has been increasing almost every year. However, due to the presence of a...

Claims

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Application Information

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IPC IPC(8): C08K9/12C08K3/36C08L7/02C08L7/00C08L9/06
CPCC08K3/36C08K9/12C08K2201/011C08L7/02C08L7/00C08L9/06
Inventor 张立群郑骏驰王益庆韩冬礼叶欣陈莺张奇峰
Owner BEIJING UNIV OF CHEM TECH
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