CN102949867A - High-efficiency antifoaming agent - Google Patents
High-efficiency antifoaming agent Download PDFInfo
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- CN102949867A CN102949867A CN201210347025XA CN201210347025A CN102949867A CN 102949867 A CN102949867 A CN 102949867A CN 201210347025X A CN201210347025X A CN 201210347025XA CN 201210347025 A CN201210347025 A CN 201210347025A CN 102949867 A CN102949867 A CN 102949867A
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Abstract
The invention relates to a high-efficiency antifoaming agent which comprises the following raw materials based on parts by weight: 10-45 parts of simethicone, 2-10 parts of fluorosilicone oil, 0.5-3 parts of hydrophobic white carbon black, 5-25 parts of polyether-modified polysiloxane emulgator, 100-200 parts of deionized water and 0.5-1 part of thickening agent. The antifoaming agent takes composition of the simethicone and the fluorosilicone oil as a main antifoaming active ingredient; and after the fluorosilicone oil is added, the surface tension of an antifoaming agent system can be reduced, and the antifoaming and foam-inhibiting performances can be improved. According to the polyether-modified polysiloxane emulgator, not only can the antifoaming active ingredients be emulsified, but also the effect enhancing action can be achieved due to the fact that the high-efficiency antifoaming agent further has good antifoaming ingredients. The antifoaming agent is high in antifoaming capacity, long in foam-inhibiting time, wide in application range, capable of being applied to various foam systems, and suitable for antifoaming and foam-inhibiting under severe conditions, i.e. high acid-base, high temperature and the like.
Description
Technical field
The present invention relates to a kind of high effective antifoaming agent and preparation method thereof.Be specifically related to a kind ofly take dimethicone, fluorosilicon oil, hydrophobic silicic aerogels and Siloxane-Oxyalkylene Copolymers emulsifying agent as primary raw material, prepare a kind of method of high effective antifoaming agent.Belong to technical field of fine chemical preparations.
Background technology
In many industrial production, can produce a large amount of foams, these foams have a strong impact on the industrial production flow process, reduce production efficiency, affect product quality, even cause producing and can't normally carry out, overcome the generation that these foams will be managed to eliminate foam and suppress foam industrial adverse effect, add defoamer and be a kind of not only easy, but also economic froth breaking mode.
Common defoamer kind has at present: polyether-type, organosilicon type, non-silicon type and silicon are ether mixed.Polyether antifoam agent is that poloxalkol is a kind of inexpensive defoamer, but it is low to exist fatal shortcoming to be exactly brokenly the bubble rate; Silicone defoaming agent disappears, suds suppressing properties is all good, and the key technology of its preparation is emulsifying technology, and its emulsification problem is very complicated, if emulsification is incomplete, then reduces the defoamer performance.The range of application of non-silicon type defoamer is limited.The Siloxane-Oxyalkylene Copolymers defoamer is the study hotspot in defoamer field in recent years, it is that polyethers is received on the polysiloxane chain by the method for grafting, it combines the advantage of silicone defoaming agent and polyether antifoam agent, belongs to the ether mixed defoamer of silicon.It not only has silicone based defoamer froth breaking and renders a service strong, the characteristics such as surface tension is low, volatility is low, nontoxic, pollution-free, physiology inertia, but also has the characteristic such as high temperature resistant, strong basicity resisting of polyethers defoamer, be a kind of function admirable, the defoamer of broad prospect of application is arranged.In the molecule of silicon ether copolymer, the siloxanes section is lipophilic group, and the polyethers section is hydrophilic group.The polyethylene oxide chain Energy Conservation is for hydrophily and foaming characteristic in the polyether segment, and energy-conservation hydrophobicity and the penetration of providing of PPOX chain has stronger effect to reducing surface tension.
Pure Siloxane-Oxyalkylene Copolymers defoamer, defoaming effect does not have the effective of silicone defoaming agent, the many components as antifoam composition of present Siloxane-Oxyalkylene Copolymers, adding a large amount of emulsifying agents carries out emulsification and makes product, general prescription is complicated, can not bring into play the premium properties of Siloxane-Oxyalkylene Copolymers fully.For example, Chinese patent CN101757804A (a kind of defoamer preparation for sugar industry) adopts low viscosity silicone grease, high viscosity silicone grease, Siloxane-Oxyalkylene Copolymers and common carbochain emulsifying agent to prepare the defoamer emulsion that is used for sugar industry.Chinese patent CN100549295C (a kind of defoaming agent for linerboard paper making) adopts silicon polyethers, organic hydrocarbon froth breaking mixture, fatty alcohol, aliphatic alcohol polyether, fatty acid polyether etc. to prepare a kind of defoaming agent for linerboard paper making.At present, domestic manufacturer's Siloxane-Oxyalkylene Copolymers defoamer compounded technology is single, its froth breaking active component is main mainly with dimethicone, and be equipped with complicated numerous emulsifiers, organic silicon modified by polyether composition proportion is less efficiently, the defoamer of preparation can't be brought into play the premium properties such as high temperature resistant, acid and alkali-resistance of Siloxane-Oxyalkylene Copolymers like this, and the disappearing of defoamer, suds suppressing properties are relatively poor, and be obvious with the gap of external product.
The present invention with Siloxane-Oxyalkylene Copolymers as unique emulsifying agent, dimethicone, fluorosilicon oil compound are carried out emulsification make emulsion type defoaming agent, this defoamer froth breaking ability is strong, but the bubble time is long, applied widely, can be used for multiple foam system, be applicable to disappearing, pressing down and steep under the harsh conditions such as strong acid-base, high temperature.
Summary of the invention
The object of the present invention is to provide a kind of high effective antifoaming agent and preparation method thereof.Be specifically related to a kind ofly take dimethicone, fluorosilicon oil, hydrophobic silicic aerogels and Siloxane-Oxyalkylene Copolymers emulsifying agent as primary raw material, prepare a kind of method of high effective antifoaming agent.The method technique is simple, can prepare on a large scale, has higher actual application value
For realizing such purpose, the technical solution used in the present invention is:
The invention provides a kind of high effective antifoaming agent, it consists of in weight portion:
Preferably, described dimethyl-silicon oil viscosity is 100～50000cst.
Preferably, described fluorosilicon oil is one or more mixture of fluoromethane silicone oil, vinyl fluoride silicone oil, the hydrogeneous fluorosilicon oil of end.
Preferably, described hydrophobic silicic aerogels is the white carbon through the organo-silicon coupling agent hydrophobic treatments.
Preferably, the structure of described Siloxane-Oxyalkylene Copolymers emulsifying agent is:
In the formula, m is 1～50 integer, and n is 1～300 integer, and a and b are 1～50 integer.
Preferably, described thickener is a kind of of polyacrylamide, CMC.
The present invention also provides a kind of preparation method of high effective antifoaming agent, may further comprise the steps:
(1) with dimethicone, fluorosilicon oil and hydrophobic silicic aerogels by being metered in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill;
(2) step (1) products therefrom is fully mixed by metering with the Siloxane-Oxyalkylene Copolymers emulsifying agent, under 60～90 ℃, slowly add steeping in water for reconstitution and give birth to phase inversion, gained milky product grinds through colloid mill, makes defoamer.
The beneficial effect that the present invention has:
The present invention relates to a kind of high effective antifoaming agent, take dimethicone, fluorosilicon oil, hydrophobic silicic aerogels and Siloxane-Oxyalkylene Copolymers emulsifying agent as primary raw material, prepare a kind of high effective antifoaming agent.The froth breaking active component is take different viscosities dimethicone and fluorosilicon oil composition as main, composite froth breaking and the suds suppressing properties that can strengthen simultaneously defoamer of different viscosities dimethicone, the adding of fluorosilicon oil can further reduce the surface tension of defoamer system, thereby improve the overall performance of defoamer, improved simultaneously corrosion-resistant, anti-solvent and the oil resistivity of defoamer.The Siloxane-Oxyalkylene Copolymers emulsifying agent i.e. emulsification froth breaking active component preferably, itself is again good antifoam composition simultaneously, further improves the antifoam performance of defoamer.This defoamer froth breaking ability is strong, but the bubble time is long, applied widely, can be applicable to multiple foam system, is applicable to disappearing, pressing down and steep under the harsh conditions such as strong acid-base, high temperature.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment, but do not limit protection scope of the present invention.
Embodiment 1
500cst dimethicone 20Kg, 1000cst dimethicone 20Kg, fluoromethane silicone oil 5Kg, hydrophobic silicic aerogels 3Kg are added in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill; Above-mentioned product 40Kg is fully mixed with Siloxane-Oxyalkylene Copolymers emulsifying agent 17Kg, under 70 ℃, phase inversion occurs in the water adding oil, it is constant to keep emulsifying temperature when adding water, water adds rear cool to room temperature and crosses colloid mill, adds aqueous thickener solution again and this product is diluted to 20% emulsion gets final product.
Embodiment 2
500cst dimethicone 20Kg, 1000cst dimethicone 20Kg, vinyl fluoride silicone oil 5Kg, hydrophobic silicic aerogels 3Kg are added in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill; Above-mentioned product 40Kg is fully mixed with Siloxane-Oxyalkylene Copolymers emulsifying agent 17Kg, under 70 ℃, phase inversion occurs in the water adding oil, it is constant to keep emulsifying temperature when adding water, water adds rear cool to room temperature and crosses colloid mill, adds aqueous thickener solution again and this product is diluted to 20% emulsion gets final product.
Embodiment 3
500cst dimethicone 20Kg, 1000cst dimethicone 20Kg, fluoromethane silicone oil 10Kg, hydrophobic silicic aerogels 4Kg are added in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill; Above-mentioned product 50Kg is fully mixed with Siloxane-Oxyalkylene Copolymers emulsifying agent 15Kg, under 70 ℃, phase inversion occurs in the water adding oil, it is constant to keep emulsifying temperature when adding water, water adds rear cool to room temperature and crosses colloid mill, adds aqueous thickener solution again and this product is diluted to 20% emulsion gets final product.
Embodiment 4
500cst dimethicone 20Kg, 1000cst dimethicone 20Kg, vinyl fluoride silicone oil 10Kg, hydrophobic silicic aerogels 4Kg are added in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill; Above-mentioned product 50Kg is fully mixed with Siloxane-Oxyalkylene Copolymers emulsifying agent 10Kg, under 70 ℃, phase inversion occurs in the water adding oil, it is constant to keep emulsifying temperature when adding water, water adds rear cool to room temperature and crosses colloid mill, adds aqueous thickener solution again and this product is diluted to 20% emulsion gets final product.
Embodiment 5
500cst dimethicone 25Kg, 1000cst dimethicone 15Kg, fluoromethane silicone oil 5Kg, hydrophobic silicic aerogels 3Kg are added in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill; Above-mentioned product 40Kg is fully mixed with Siloxane-Oxyalkylene Copolymers emulsifying agent 17Kg, under 70 ℃, phase inversion occurs in the water adding oil, it is constant to keep emulsifying temperature when adding water, water adds rear cool to room temperature and crosses colloid mill, adds aqueous thickener solution again and this product is diluted to 30% emulsion gets final product.
Embodiment 6
1000cst dimethicone 40Kg, fluoromethane silicone oil 5Kg, hydrophobic silicic aerogels 3Kg are added in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill; Above-mentioned product 50Kg is fully mixed with Siloxane-Oxyalkylene Copolymers emulsifying agent 20Kg, under 70 ℃, phase inversion occurs in the water adding oil, it is constant to keep emulsifying temperature when adding water, water adds rear cool to room temperature and crosses colloid mill, adds aqueous thickener solution again and this product is diluted to 30% emulsion gets final product.
The above only is preferred embodiment of the present invention, is not technical scheme of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment does.
Claims (7)
1. high effective antifoaming agent is characterized in that it consists of in weight portion:
2. a kind of high effective antifoaming agent according to claim 1 is characterized in that described dimethyl-silicon oil viscosity is 100～50000cst.
3. a kind of high effective antifoaming agent according to claim 1 is characterized in that described fluorosilicon oil is one or more of fluoromethane silicone oil, vinyl fluoride silicone oil, the hydrogeneous fluorosilicon oil of end.
4. a kind of high effective antifoaming agent according to claim 1 is characterized in that described hydrophobic silicic aerogels is the white carbon through the organo-silicon coupling agent hydrophobic treatments.
5. a kind of high effective antifoaming agent according to claim 1 is characterized in that the structure of described Siloxane-Oxyalkylene Copolymers emulsifying agent is:
In the formula, m is 1～50 integer, and n is 1～300 integer, and a and b are 1～50 integer.
6. a kind of high effective antifoaming agent according to claim 1 is characterized in that described thickener is a kind of of polyacrylamide, CMC.
7. a kind of high effective antifoaming agent claimed in claim 1 is characterized in that it may further comprise the steps:
(1) with dimethicone, fluorosilicon oil and hydrophobic silicic aerogels by being metered in the reactor, 200 ℃ of lower insulation 8h, products therefrom grinds through colloid mill;
(2) (1) products therefrom is fully mixed by metering with the Siloxane-Oxyalkylene Copolymers emulsifying agent, under 60～90 ℃, slowly add steeping in water for reconstitution and give birth to phase inversion, gained milky product grinds through colloid mill, makes defoamer.
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| CN201210347025XA CN102949867A (en) | 2012-09-19 | 2012-09-19 | High-efficiency antifoaming agent |
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| CN201210347025XA CN102949867A (en) | 2012-09-19 | 2012-09-19 | High-efficiency antifoaming agent |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643556A (en) * | 2013-11-30 | 2014-03-19 | 常熟市华宇针织印染有限公司 | Composite organosilicone defoamer for use in textile dyeing and finishing |
| CN103657161A (en) * | 2013-12-31 | 2014-03-26 | 张锦碧 | High-performance de-foaming agent and preparation method thereof |
| CN103866612A (en) * | 2014-02-27 | 2014-06-18 | 苏州恒康新材料有限公司 | High temperature resistant defoaming agent and preparation method thereof |
| CN104436763A (en) * | 2014-11-14 | 2015-03-25 | 衢州氟硅技术研究院 | Fluorosilicone defoaming agent and preparation method thereof |
| CN104826365A (en) * | 2015-05-12 | 2015-08-12 | 常熟理工学院 | Special defoaming agent for high-interface fluorocarbon resin emulsion and preparation method of special defoaming agent |
| CN104874210A (en) * | 2015-06-05 | 2015-09-02 | 宁波市川宁环保科技有限公司 | Rapid foam inhibitor |
| CN105031978A (en) * | 2015-08-27 | 2015-11-11 | 杭州彤诚新材料技术有限公司 | Silyl ether mixed defoaming agent emulsion and preparation method thereof |
| CN105238367A (en) * | 2015-10-23 | 2016-01-13 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Environment-friendly defoaming agent for well drilling and preparation method thereof |
| CN105289049A (en) * | 2015-11-13 | 2016-02-03 | 宣城市聚源精细化工有限公司 | Antifoaming agent |
| CN105289050A (en) * | 2015-11-13 | 2016-02-03 | 宣城市聚源精细化工有限公司 | High-efficiency antifoaming agent |
| CN106497527A (en) * | 2016-10-21 | 2017-03-15 | 广东石油化工学院 | A kind of addressing management system defoamer and preparation method thereof |
| TWI582229B (en) * | 2013-03-21 | 2017-05-11 | 迪愛生股份有限公司 | Deformer, surfactant composition, coating composition, and resist composition |
| CN106867482A (en) * | 2016-12-27 | 2017-06-20 | 广东中联邦精细化工有限公司 | A kind of special defoamer in oil field |
| CN107512863A (en) * | 2016-06-16 | 2017-12-26 | 苏州市兴邦化学建材有限公司 | A kind of solid defoaming agent and preparation method thereof of strength cement-based grouting material |
| CN108726913A (en) * | 2018-05-28 | 2018-11-02 | 天津中油渤星工程科技有限公司 | A kind of silicon ether composite anti-foaming agent and its preparation method and application |
| CN108721949A (en) * | 2018-05-25 | 2018-11-02 | 高阳 | A kind of organic silicon defoamer and preparation method thereof |
| CN108905306A (en) * | 2018-09-18 | 2018-11-30 | 湖北兴瑞硅材料有限公司 | A kind of organic silicon defoamer and preparation method thereof |
| CN109011720A (en) * | 2018-08-27 | 2018-12-18 | 苏州洋紫瑞信息科技有限公司 | A kind of sewage treatment high effective antifoaming agent and its preparation method and application |
| CN109248473A (en) * | 2018-11-05 | 2019-01-22 | 南京瑞思化学技术有限公司 | A kind of deaeration composition |
| CN112933667A (en) * | 2021-01-29 | 2021-06-11 | 山东理工大学 | Antifoaming agent for carboxylic acrylonitrile butadiene latex and preparation method thereof |
| CN114699805A (en) * | 2021-12-31 | 2022-07-05 | 宁夏顺邦达新材料有限公司 | Defoaming agent for suspension process polyvinyl chloride production process and preparation method thereof |
| CN115518418A (en) * | 2022-10-27 | 2022-12-27 | 广东南辉新材料有限公司 | Mineral oil defoaming agent and preparation method thereof |
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| TWI582229B (en) * | 2013-03-21 | 2017-05-11 | 迪愛生股份有限公司 | Deformer, surfactant composition, coating composition, and resist composition |
| CN103643556A (en) * | 2013-11-30 | 2014-03-19 | 常熟市华宇针织印染有限公司 | Composite organosilicone defoamer for use in textile dyeing and finishing |
| CN103657161A (en) * | 2013-12-31 | 2014-03-26 | 张锦碧 | High-performance de-foaming agent and preparation method thereof |
| CN103657161B (en) * | 2013-12-31 | 2015-08-19 | 张锦碧 | A kind of high-performance defoamer and preparation method thereof |
| CN103866612B (en) * | 2014-02-27 | 2016-02-10 | 苏州恒康新材料有限公司 | A kind of high temperature resistant defoamer and preparation method thereof |
| CN103866612A (en) * | 2014-02-27 | 2014-06-18 | 苏州恒康新材料有限公司 | High temperature resistant defoaming agent and preparation method thereof |
| CN104436763A (en) * | 2014-11-14 | 2015-03-25 | 衢州氟硅技术研究院 | Fluorosilicone defoaming agent and preparation method thereof |
| CN104826365A (en) * | 2015-05-12 | 2015-08-12 | 常熟理工学院 | Special defoaming agent for high-interface fluorocarbon resin emulsion and preparation method of special defoaming agent |
| CN104826365B (en) * | 2015-05-12 | 2016-08-24 | 常熟理工学院 | A kind of special defoamer of fluorocarbon resin emulsion and preparation method thereof |
| CN104874210A (en) * | 2015-06-05 | 2015-09-02 | 宁波市川宁环保科技有限公司 | Rapid foam inhibitor |
| CN105031978A (en) * | 2015-08-27 | 2015-11-11 | 杭州彤诚新材料技术有限公司 | Silyl ether mixed defoaming agent emulsion and preparation method thereof |
| CN105238367A (en) * | 2015-10-23 | 2016-01-13 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Environment-friendly defoaming agent for well drilling and preparation method thereof |
| CN105289049A (en) * | 2015-11-13 | 2016-02-03 | 宣城市聚源精细化工有限公司 | Antifoaming agent |
| CN105289050A (en) * | 2015-11-13 | 2016-02-03 | 宣城市聚源精细化工有限公司 | High-efficiency antifoaming agent |
| CN107512863A (en) * | 2016-06-16 | 2017-12-26 | 苏州市兴邦化学建材有限公司 | A kind of solid defoaming agent and preparation method thereof of strength cement-based grouting material |
| CN106497527A (en) * | 2016-10-21 | 2017-03-15 | 广东石油化工学院 | A kind of addressing management system defoamer and preparation method thereof |
| CN106867482A (en) * | 2016-12-27 | 2017-06-20 | 广东中联邦精细化工有限公司 | A kind of special defoamer in oil field |
| CN108721949A (en) * | 2018-05-25 | 2018-11-02 | 高阳 | A kind of organic silicon defoamer and preparation method thereof |
| CN108726913B (en) * | 2018-05-28 | 2021-04-27 | 天津中油渤星工程科技有限公司 | Silicon ether composite defoaming agent and preparation method and application thereof |
| CN108726913A (en) * | 2018-05-28 | 2018-11-02 | 天津中油渤星工程科技有限公司 | A kind of silicon ether composite anti-foaming agent and its preparation method and application |
| CN109011720A (en) * | 2018-08-27 | 2018-12-18 | 苏州洋紫瑞信息科技有限公司 | A kind of sewage treatment high effective antifoaming agent and its preparation method and application |
| CN109011720B (en) * | 2018-08-27 | 2020-10-02 | 南通市晗泰化工有限公司 | Efficient defoaming agent for sewage treatment and preparation method and application thereof |
| CN108905306A (en) * | 2018-09-18 | 2018-11-30 | 湖北兴瑞硅材料有限公司 | A kind of organic silicon defoamer and preparation method thereof |
| CN109248473A (en) * | 2018-11-05 | 2019-01-22 | 南京瑞思化学技术有限公司 | A kind of deaeration composition |
| CN109248473B (en) * | 2018-11-05 | 2021-07-06 | 南京瑞思化学技术有限公司 | Defoaming composition |
| CN112933667A (en) * | 2021-01-29 | 2021-06-11 | 山东理工大学 | Antifoaming agent for carboxylic acrylonitrile butadiene latex and preparation method thereof |
| CN114699805A (en) * | 2021-12-31 | 2022-07-05 | 宁夏顺邦达新材料有限公司 | Defoaming agent for suspension process polyvinyl chloride production process and preparation method thereof |
| CN115518418A (en) * | 2022-10-27 | 2022-12-27 | 广东南辉新材料有限公司 | Mineral oil defoaming agent and preparation method thereof |
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Application publication date: 20130306 |