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Graphene oxide-modified organosilicone defoaming agent and preparation method thereof

A silicone defoamer, graphene modification technology, applied in the direction of foam dispersion/prevention, etc., can solve the problems of high temperature resistance, high price, acid and alkali resistance, etc., to achieve low surface tension, moderate price, defoaming quick effect

Active Publication Date: 2017-09-05
JIANGSU SAIOUXINYUE DEFOAMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (2) Silicone defoaming agent has good defoaming performance and anti-foaming foam production performance, but it is not resistant to high temperature, acid and alkali;
[0006] (3) The performance of mineral oil defoamers is between polyether defoamers and silicone defoamers, but its price is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A graphene oxide modified silicone defoamer, comprising the following components, in parts by mass: 30 parts of dimethyl silicone oil, 3 parts of hydrophobic white carbon black, 5.05 parts of graphene oxide modified silicone oil, dehydration Sorbitan fatty acid ester and sorbitan monooleate polyoxyethylene ether total 8 parts, KH550 0.1 part, hydroxypropyl cellulose 0.2 part, sodium benzoate 0.2 part, deionized water 120 parts.

[0037] Preparation

[0038] Take 30 parts of 5000 cps simethicone oil and 3 parts of hydrophobic silica to react at 120 °C for 3 h to obtain a white sticky modified silicone paste; oxidize 5 parts and 0.05 parts of 1000 cps hydrogen-containing silicone oil Graphene was mixed evenly under high-speed shear at 5000 r / min to obtain graphene oxide modified silicone oil, and mixed with modified silicone paste, and after shearing and dispersing at 5000 r / min for 30 minutes, 8 parts of sorbitan fatty acid were added ester and sorbitan monooleate polyo...

Embodiment 2

[0040] A graphene oxide modified silicone defoamer, comprising the following components, in parts by mass: 50 parts of methyl silicone oil, 5 parts of hydrophobic white carbon black, 10.1 parts of graphene oxide modified silicone oil, dehydrated sorrel A total of 9 parts of sugar alcohol fatty acid ester and sorbitan monooleate polyoxyethylene ether, 0.1 part of KH560, 0.2 part of hydroxymethyl cellulose, 0.2 part of Kethon, and 130 parts of deionized water.

[0041] Preparation

[0042] Take 50 parts of methyl silicone oil of 6000 cps and 5 parts of hydrophobic white carbon black at 130 ℃ for 4 h to obtain a white sticky modified silicone paste; Graphene oxide modified silicone oil was uniformly obtained by high-speed shearing and mixing at 6000 r / min, and mixed with modified silicone paste, and 9 parts of sorbitan fatty acid were added after shearing and dispersing at 6000 r / min for 40 min ester and sorbitan monooleate polyoxyethylene ether, shear dispersion at 6000 r / min f...

Embodiment 3

[0044] A graphene oxide modified silicone defoamer, comprising the following components, in parts by mass: 60 parts of benzyl silicone oil, 6 parts of hydrophobic white carbon black, 10.1 parts of graphene oxide modified silicone oil, dehydration A total of 10 parts of sorbitan fatty acid ester and sorbitan monooleate polyoxyethylene ether, 0.2 part of KH580, 0.3 part of hydroxyethyl cellulose, 0.4 part of Kethon, and 150 parts of deionized water.

[0045] Preparation

[0046] Take 60 parts of phenylmethyl silicone oil with a viscosity of 10000 cps and 6 parts of hydrophobic silica to react at 150 °C for 5 h to obtain a white sticky modified silicone paste; Graphene oxide was mixed evenly under high-speed shear at 8000 r / min to obtain graphene oxide modified silicone oil, and mixed with modified silicone paste, sheared and dispersed at 8000 r / min for 60 min, and 10 parts of sorbitan were added Fatty acid ester and sorbitan monooleate polyoxyethylene ether, shear dispersion at...

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Abstract

The invention discloses a graphene oxide-modified organosilicone defoaming agent and a preparation method thereof. The graphene oxide-modified organosilicone defoaming agent is prepared from the following components in parts by mass: 30 to 60 parts of organosilicone oil, 3 to 6 parts of hydrophobic white carbon black, 5.05 to 10.1 parts of graphene oxide-modified organosilicone oil, 8 to 10 parts of composite emulsifier, 0.1 to 0.5 part of coupling agent, 0.2 to 0.5 part of thickener, 0.2 to 0.5 part of preservative, and 120 to 150 parts of deionized water. The prepared graphene oxide-modified organosilicone defoaming agent has the characteristics that the defoaming is quick and stable, the surface tension is low, and the like; the high temperature-resistant property, acid and alkaline-resistant property, hydrophilicity and the like of the graphene oxide are realized; the defoaming agent can be widely applied to the industries of dyeing and printing, ink, coating, papermaking and the like.

Description

technical field [0001] The invention belongs to the technical field of fine chemical products, and in particular relates to a preparation method of a high-performance organosilicon defoamer. Background technique [0002] With the rapid development of science and technology, industries involving stirring will be accompanied by the generation of foam, such as papermaking, ink, paint, fermentation, printing and dyeing and other industries. Foam is a coarse dispersed phase of gas in liquid. On the one hand, it will greatly limit industrial production capacity; on the other hand, it will cause waste of raw materials and products, and affect the quality and performance of products. The industry usually chooses to add a defoamer to the reaction system to eliminate and suppress the generation of foam. [0003] Defoamers are mainly divided into mineral oils, silicones and polyethers, and these three types of defoamers have the following defects to some extent: [0004] (1) The defo...

Claims

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Application Information

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IPC IPC(8): B01D19/04
Inventor 陈士海杨柏忠
Owner JIANGSU SAIOUXINYUE DEFOAMER
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