CN108176084A - A kind of antifoaming agent and preparation method - Google Patents
A kind of antifoaming agent and preparation method Download PDFInfo
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- CN108176084A CN108176084A CN201711476778.XA CN201711476778A CN108176084A CN 108176084 A CN108176084 A CN 108176084A CN 201711476778 A CN201711476778 A CN 201711476778A CN 108176084 A CN108176084 A CN 108176084A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
- B01D19/0422—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing S-atoms
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Abstract
The application discloses a kind of antifoaming agent and preparation method, and the antifoaming agent includes polyether silicone, and Long carbon chain contains the surfactant of hydrophilic group, higher aliphatic, dispersant, emulsifier, auxiliary agent, water and ethyl alcohol.The preparation method includes：The surfactant that water and Long carbon chain contain hydrophilic group is added in reaction kettle and is stirred；By polyether silicone, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol add in the reaction kettle and continue to stir；Dispersant is added in into ultrasonic disperse in the reaction kettle, obtains antifoaming agent.The application is using polyether silicone and higher aliphatic as active constituent, the surfactant that cooperation Long carbon chain contains hydrophilic group uses, polyether silicone and higher aliphatic effectively inhibit foam to generate, the surfactant that Long carbon chain contains hydrophilic group has destruction foam effect, and three's collective effect can promote whole defoaming effect.In addition, by adding dispersant, emulsifier and auxiliary agent, the quality that can make antifoaming agent is more stable.
Description
Technical field
This application involves chemical technology field, more particularly to a kind of antifoaming agent and preparation method.
Background technology
Antifoaming agent, also referred to as defomaing agent are that surface tension is reduced in coating process, and foam is inhibited to generate or eliminate
Generate the additive of foam.China, which is permitted workable antifoaming agent, the fatty acid ester compounded object of silicone emulsion, higher alcohols, polyoxyethylene
Polyoxypropylene pentaerythrite ether, polyoxyethylene polyoxy propyl alcohol amidogen ether, polypropylene glycerol aether and polyoxyethylene polyoxypropylene glycerine
7 kinds of ether, dimethyl silicone polymer etc.
Antifoaming agent is mostly liquid compound product, is broadly divided into three classes：Mineral oils, organic silicon and polyethers.Mineral oil
Class antifoaming agent is usually made of carrier, activating agent etc..Carrier is the substance of low surface tension, and effect is carrying and dilution, often
It is water, fatty alcohol etc. with carrier；The effect of activating agent is inhibition and eliminates foam, common to have wax, aliphatic amide, fat
Deng.Organic silicon antifoaming agent generally comprises dimethyl silicone polymer etc..It is sweet that polyethers antifoaming agent includes polyoxypropylene ethylene oxide
Oily ether etc..Polyethers antifoaming agent has the characteristics that the suds time is long, effect is good, antifoaming speed is fast, thermal stability is good.
The most of qualities of antifoaming agent of prior art production are unstable, and defoaming effect is bad.
Invention content
The application's is designed to provide a kind of antifoaming agent and preparation method, is deposited with the antifoaming agent for solving prior art production
It is unstable and the problem of defoaming effect is bad in quality.
On the one hand, according to an embodiment of the present application, a kind of antifoaming agent is provided, including：Polyether silicone, Long carbon chain contain
The surfactant of hydrophilic group, higher aliphatic, dispersant, emulsifier, auxiliary agent, water and ethyl alcohol.
Optionally, the antifoaming agent includes the component of following parts by weight：20-40 parts of polyether silicones, 8-20 parts of Long carbon chains
Surfactant containing hydrophilic group, 20-25 parts of higher aliphatics, 15-20 parts of dispersants, 5-10 parts of emulsifiers, 4-6 parts are helped
Agent, 360-400 parts of water and 15-20 parts of ethyl alcohol.
Optionally, the antifoaming agent includes the component of following parts by weight：30 parts of polyether silicones, 14 parts of Long carbon chains contain parent
Water base surfactant, 23 parts of higher aliphatics, 27 parts of dispersants, 7 parts of emulsifiers, 5 parts of auxiliary agents, 380 parts of water and 18 parts of second
Alcohol.
Optionally, the surfactant that the Long carbon chain contains hydrophilic group includes odium stearate and linear alkyl benzene sulfonic acid
Sodium.
Optionally, the dispersant includes hydrophobic silica.
Optionally, the emulsifier includes dioctyl sodium sulfosuccinate.
Optionally, the auxiliary agent includes polyethylene wax, poly glycol monomethyl ether and sodium dehydroacetate.
On the other hand, according to an embodiment of the present application, a kind of preparation method of antifoaming agent is provided, is included the following steps：
The surfactant that water and Long carbon chain contain hydrophilic group is added in reaction kettle and is stirred；
By polyether silicone, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol add in the reaction kettle and continue to stir；
Dispersant is added in into ultrasonic disperse in the reaction kettle, obtains antifoaming agent；
The surfactant that the polyether silicone and the Long carbon chain contain hydrophilic group is added in described anti-in a manner of being added dropwise
Answer kettle.
Optionally, the temperature of the stirring is 20-50 DEG C, and the time of the stirring is 1-2h.
Optionally, the supersonic frequency of the ultrasonic disperse is 40-60kHz.
By above technical scheme it is found that the embodiment of the present application provides a kind of antifoaming agent and preparation method, the antifoaming agent packet
Include polyether silicone, Long carbon chain contains the surfactant of hydrophilic group, higher aliphatic, dispersant, emulsifier, auxiliary agent, water and
Ethyl alcohol.The preparation method includes：The surfactant that water and Long carbon chain contain hydrophilic group is added in reaction kettle and is stirred；It will be poly-
Ether siloxanes, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol, which are added in the reaction kettle, to be continued to stir；Dispersant is added in into institute
Ultrasonic disperse in reaction kettle is stated, obtains antifoaming agent, the polyether silicone and the Long carbon chain contain the surface-active of hydrophilic group
Agent adds in the reaction kettle in a manner of being added dropwise.The application using polyether silicone and higher aliphatic as active constituent, grow by cooperation
The surfactant that carbochain contains hydrophilic group uses, and polyether silicone and higher aliphatic effectively can inhibit foam to generate, long carbon
The surfactant that chain contains hydrophilic group has destruction foam effect, and three's collective effect can promote whole defoaming effect.It is in addition, logical
Addition dispersant, emulsifier and auxiliary agent are crossed, the quality that can make antifoaming agent is more stable.
Description of the drawings
It in order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow chart of antifoaming agent preparation method according to the embodiment of the present application.
Specific embodiment
The embodiment of the present application provides a kind of antifoaming agent, including：Polyether silicone, Long carbon chain contain the surface-active of hydrophilic group
Agent, higher aliphatic, dispersant, emulsifier, auxiliary agent, water and ethyl alcohol.
Polyether silicone is because of (the abbreviation silicon of the polyether siloxane copolymers as made from polyether segment in siloxane molecule
Ether copolymer).Polysiloxane-based antifoaming agent has the features such as defoaming is rapid, and the suds time is grown and is safe and non-toxic, but it is insoluble in
Water, high temperature resistant, strong basicity resisting is poor, and polyethers antifoaming agent good water solubility, high temperature resistant, strong basicity resisting is strong, but its antifoaming speed and suppression
The bubble time is all not satisfactory, is grafted on polysiloxane chain by condensation technology and introduces polyether chain, with two class antifoaming agent
The advantages of, become a kind of function admirable, the antifoaming agent having wide application prospects.In the molecule of silicon ether copolymer, siloxanes section
It is lipophilic group, polyethers section is hydrophilic group.Polyethylene oxide chain is energy saving in polyether segment provides hydrophily and foaming characteristic, polypropylene oxide
Chain is energy saving to provide hydrophobicity and penetration, has stronger effect to reducing surface tension.The group of polyethers end group is copolymerized silicon ether
The performance of object also has strong influence.Common end group has hydroxyl, alkoxy etc..Adjust opposite point of siloxanes section in copolymer
Protonatomic mass can make copolymer prominent or weaken the characteristic of organosilicon.Polyether silicone unifies bubble from hydraulic fluid side intrusion bubble
It destroys, foam is enabled to be difficult to generate.
Long carbon chain contains the surfactant of hydrophilic group for foam (foamed polymer), can be invaded from air side
Enter in bubble, bubble unification is destroyed, so as to play the effect for destroying foam.
Higher aliphatic is also known as higher alcohols, refers to containing there are six the mixtures of carbon atom more than monohydric alcohol.Higher alcohols are strong dredge
The weakly water-wet linear molecule of water is effective antifoaming agent in aqueous systems.The alcohol of C7-C9 is most effective antifoaming agent.C12-C22
Higher alcohols be configured to granularity as 4-9 μm by appropriate emulsifier, content is the aqueous emulsion of 20-50%, is aqueous systems
Antifoaming agent.Also some have defoaming effect into ester, such as benzyl carbinol oleate, Laurate alcohol ester phenylacetate in penicillin fermentation,
The latter is alternatively arranged as precursor.
Dispersant is that a kind of in the molecule while have the interfacial agents of two kinds of opposite natures of lipophile and hydrophily.It can
It is uniform dispersion those be poorly soluble in the inorganic of liquid, organic solid particle, at the same can also prevent solid particle sedimentation and
Cohesion forms the medicament needed for stable suspension.
Emulsifier is the stabilizer of emulsion, is a kind of surfactant.The effect of emulsifier is when it is dispersed in dispersion
During the surface of matter, film or electric double layer are formed, can make dispersed phase that can thus prevent the droplet of dispersed phase mutual with charge
Condensation, makes the emulsion to be formed more stable.
By above technical scheme it is found that the embodiment of the present application provides a kind of antifoaming agent, the antifoaming agent includes polyethers silica
Alkane, Long carbon chain contain the surfactant of hydrophilic group, higher aliphatic, dispersant, emulsifier, auxiliary agent, water and ethyl alcohol.The application
Using polyether silicone and higher aliphatic as active constituent, the surfactant that cooperation Long carbon chain contains hydrophilic group is used, is gathered
Ether siloxanes and higher aliphatic effectively can inhibit foam to generate, and the surfactant that Long carbon chain contains hydrophilic group has destruction foam
Effect, three's collective effect can promote whole defoaming effect.In addition, by adding dispersant, emulsifier and auxiliary agent, defoaming can be made
The quality of agent is more stable.
Optionally, the antifoaming agent includes the component of following parts by weight：20-40 parts of polyether silicones, 8-20 parts of Long carbon chains
Surfactant containing hydrophilic group, 20-25 parts of higher aliphatics, 15-20 parts of dispersants, 5-10 parts of emulsifiers, 4-6 parts are helped
Agent, 360-400 parts of water and 15-20 parts of ethyl alcohol.Through a large amount of practice have shown that, in the range of this weight ratio the effect of antifoaming agent compared with
Good, quality is relatively stablized.
Optionally, the antifoaming agent includes the component of following parts by weight：30 parts of polyether silicones, 14 parts of Long carbon chains contain parent
Water base surfactant, 23 parts of higher aliphatics, 27 parts of dispersants, 7 parts of emulsifiers, 5 parts of auxiliary agents, 380 parts of water and 18 parts of second
Alcohol.Practice have shown that, in this weight ratio, the effect of antifoaming agent is more preferable, and quality is more stable through a large amount of.
Optionally, the surfactant that the Long carbon chain contains hydrophilic group includes odium stearate and linear alkyl benzene sulfonic acid
Sodium.Odium stearate can be used as emulsifier or dispersant, for the emulsification of polymer and antioxidant etc..Sodium n-alkylbenzenesulfonate
With decontamination, moistening, foaming, emulsification, the surface-active disperseed.The two, which is respectively provided with, destroys foam function.
Optionally, the dispersant includes hydrophobic silica.
Hydrophobic silica is also known as the silica of silane treatment or the silica of surface treatment, white-amorphous are fine
Powder.Hydrophobic silica is used as dispersant in antifoaming agent, and dispersion effect is good, safe and non-toxic.
Optionally, the emulsifier includes dioctyl sodium sulfosuccinate.
Dioctyl sodium sulfosuccinate is soluble easily in water, and aqueous solution is creamy white.With very high penetration, permeability is quick
Uniformly.Lubricity, emulsibility, foaming characteristic are good.
Optionally, the auxiliary agent includes polyethylene wax, poly glycol monomethyl ether and sodium dehydroacetate.
Polyethylene wax also known as macromolecule wax, are a kind of chemical materials formed by vinyl polymerization rubber processing agent, quality
For the small microballon shape/sheet of white, have the characteristics that fusing point compared with it is high, hardness is big, glossiness is high, color is snow-white, coating can be improved
Glossiness, persistence, hardness and abrasion resistance increase paint coatings aesthetic feeling.
Poly glycol monomethyl ether is dissolved in water, ethyl alcohol and organic solvent.Steam forces down, to thermostabilization, in textile and dyeing industry
And as thickener, lubricant in daily chemical industry.Poly glycol monomethyl ether has good water solubility, wetability, lubricity, life
Manage inertia, non-stimulated to human body.It can play the role of thickening and lubrication for antifoaming agent.
Sodium dehydroacetate in food saccharomycete, spoilage organisms, mould have stronger bacteriostasis, be widely used in meat
It is the anti-corrosion of class, fish, greengrocery, fruits, beverage class, cake class etc., fresh-keeping, it is New-type wide-spectrum bacteriostatic agent.Sodium dehydroacetate
It is safe and non-toxic, after antifoaming agent, bacteria breed is can inhibit, improves the stability of antifoaming agent.
On the other hand, refering to Fig. 1, embodiments herein provides a kind of preparation method of antifoaming agent, includes the following steps：
Step S1, the surfactant that water and Long carbon chain contain hydrophilic group is added in the reaction kettle and stirred；
Step S2, polyether silicone, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol are continued to stir in reaction kettle；
Step S3, dispersant is added in into ultrasonic disperse in the reaction kettle, obtains antifoaming agent；
Power ultrasonic is most prominent in a liquid and be the effect of people's likewise known is dispersion effect.Ultrasonic wave is in liquid
In peptizaiton, rely primarily on the ultrasonic cavitation of liquid.Less than 1 μm of particle can be obtained using ultrasonic wave dispersion.
It is typically a little that the system of shaking is small, acceleration is big that ultrasonic disperse, which is held, is widely used in fields such as coating.
The surfactant that the polyether silicone and the Long carbon chain contain hydrophilic group is added in described anti-in a manner of being added dropwise
Answer kettle.
The surfactant that polyether silicone and Long carbon chain contain hydrophilic group is added in a manner of being added dropwise in the reaction kettle, side
Side stirring is added dropwise, polyether silicone and Long carbon chain can be contained to the surfactant mixing of hydrophilic group evenly.
By above technical scheme it is found that the embodiment of the present application provides a kind of antifoaming agent preparation method, the preparation method packet
It includes：The surfactant that water and Long carbon chain contain hydrophilic group is added in reaction kettle and is stirred；By polyether silicone, higher aliphatic
Alcohol, emulsifier, auxiliary agent and ethyl alcohol, which are added in the reaction kettle, to be continued to stir；Dispersant is added in into ultrasound point in the reaction kettle
It dissipates, obtains antifoaming agent, the surfactant that the polyether silicone and the Long carbon chain contain hydrophilic group adds in a manner of being added dropwise
The reaction kettle.The method that the application uses can be such that the component of antifoaming agent mixes evenly, obtain the defoaming effect of antifoaming agent
More preferably, quality is more stable.
Optionally, the temperature of the stirring is 20-50 DEG C, and the time of the stirring is 1-2h.In 20-50 DEG C of condition
Under, the raw material mixed effect of antifoaming agent is more preferable.After mixing time reaches 1-2h, mixing is more uniformly distributed.
Optionally, the supersonic frequency of the ultrasonic disperse is 40-60kHz.Ultrasonic wave disperses under the conditions of 40-60kHz
Effect is more preferable.
By above technical scheme it is found that the embodiment of the present application provides a kind of antifoaming agent and preparation method, the antifoaming agent packet
Include polyether silicone, Long carbon chain contains the surfactant of hydrophilic group, higher aliphatic, dispersant, emulsifier, auxiliary agent, water and
Ethyl alcohol.The preparation method includes：The surfactant that water and Long carbon chain contain hydrophilic group is added in reaction kettle and is stirred；It will be poly-
Ether siloxanes, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol, which are added in the reaction kettle, to be continued to stir；Dispersant is added in into institute
Ultrasonic disperse in reaction kettle is stated, obtains antifoaming agent, the polyether silicone and the Long carbon chain contain the surface-active of hydrophilic group
Agent adds in the reaction kettle in a manner of being added dropwise.The application using polyether silicone and higher aliphatic as active constituent, grow by cooperation
The surfactant that carbochain contains hydrophilic group uses, and polyether silicone and higher aliphatic effectively can inhibit foam to generate, long carbon
The surfactant that chain contains hydrophilic group has destruction foam effect, and three's collective effect can promote whole defoaming effect.It is in addition, logical
Addition dispersant, emulsifier and auxiliary agent are crossed, the quality that can make antifoaming agent is more stable.
In order to further illustrate the application, a kind of antifoaming agent and preparation method that are provided with reference to embodiment to the application
It is described in detail, but they cannot be interpreted as the restriction to the application protection domain.
Embodiment 1
The antifoaming agent that the embodiment of the present application 1 provides includes the component of following parts by weight：20 parts of polyether silicones, 20 parts of long carbon
Chain contains the surfactant of hydrophilic group, 20 parts of higher aliphatics, 15 parts of dispersants, 5 parts of emulsifiers, 4 parts of auxiliary agents, 360 parts of water
With 20 parts of ethyl alcohol.The surfactant that Long carbon chain contains hydrophilic group is odium stearate and sodium n-alkylbenzenesulfonate, and weight ratio is
1:1, dispersant is hydrophobic silica, and emulsifier is dioctyl sodium sulfosuccinate, and higher aliphatic is octadecyl alcolol, and auxiliary agent is
Polyethylene wax, poly glycol monomethyl ether and sodium dehydroacetate, three's weight ratio are 2:1:1.
Preparation method is to add in the surfactant that water and Long carbon chain contain hydrophilic group in the reaction kettle to stir；It will be poly-
Ether siloxanes, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol continue to stir in reaction kettle；The temperature of stirring is 50 DEG C, it stirs
The time mixed is 1h, dispersant is added in ultrasonic disperse in the reaction kettle, supersonic frequency 50kHz obtains antifoaming agent.
Embodiment 2
The antifoaming agent that the embodiment of the present application 2 provides includes the component of following parts by weight：40 parts of polyether silicones, 8 parts of long carbon
Chain contains the surfactant of hydrophilic group, 25 parts of higher aliphatics, 20 parts of dispersants, 10 parts of emulsifiers, 6 parts of auxiliary agents, 400 parts of water
With 15 parts of ethyl alcohol.The surfactant that Long carbon chain contains hydrophilic group is odium stearate and sodium n-alkylbenzenesulfonate, and weight ratio is
1:2, dispersant is hydrophobic silica, and emulsifier is dioctyl sodium sulfosuccinate, and higher aliphatic is hexadecanol, and auxiliary agent is
Polyethylene wax, poly glycol monomethyl ether and sodium dehydroacetate, three's weight ratio are 1:1:1.
Preparation method is to add in the surfactant that water and Long carbon chain contain hydrophilic group in the reaction kettle to stir；It will be poly-
Ether siloxanes, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol continue to stir in reaction kettle；The temperature of stirring is 30 DEG C, it stirs
The time mixed is 2h, dispersant is added in ultrasonic disperse in the reaction kettle, supersonic frequency 40kHz obtains antifoaming agent.
Embodiment 3
The antifoaming agent that the embodiment of the present application 3 provides includes the component of following parts by weight：30 parts of polyether silicones, 14 parts of long carbon
Chain contains the surfactant of hydrophilic group, 23 parts of higher aliphatics, 27 parts of dispersants, 7 parts of emulsifiers, 5 parts of auxiliary agents, 380 parts of water
Contain the surfactant of hydrophilic group for odium stearate and sodium n-alkylbenzenesulfonate with 18 parts of ethyl alcohol Long carbon chains, weight ratio 2:
1, dispersant is hydrophobic silica, and emulsifier is dioctyl sodium sulfosuccinate, and higher aliphatic is tetradecyl alchohol, and auxiliary agent is poly-
Ethylene waxes, poly glycol monomethyl ether and sodium dehydroacetate, three's weight ratio are 2:2:1.
Preparation method is to add in the surfactant that water and Long carbon chain contain hydrophilic group in the reaction kettle to stir；It will be poly-
Ether siloxanes, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol continue to stir in reaction kettle；The temperature of stirring is 35 DEG C, it stirs
The time mixed is 1.5h, dispersant is added in ultrasonic disperse in the reaction kettle, supersonic frequency 60kHz obtains antifoaming agent.
Those skilled in the art will readily occur to the application its after considering specification and putting into practice application disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the application, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.Description and embodiments are considered only as illustratively, and the true scope and spirit of the application are by following
Claim is pointed out.
It should be understood that the precision architecture that the application is not limited to be described above and be shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.Scope of the present application is only limited by appended claim.
Claims (10)
1. a kind of antifoaming agent, which is characterized in that including：Polyether silicone, Long carbon chain contains the surfactant of hydrophilic group, advanced
Fatty alcohol, dispersant, emulsifier, auxiliary agent, water and ethyl alcohol.
2. antifoaming agent according to claim 1, which is characterized in that include the component of following parts by weight：20-40 parts of polyethers silicon
Oxygen alkane, 8-20 parts of Long carbon chains contain the surfactant of hydrophilic group, 20-25 parts of higher aliphatics, 15-20 parts of dispersants, 5-10
Part emulsifier, 4-6 parts of auxiliary agents, 360-400 parts of water and 15-20 parts of ethyl alcohol.
3. antifoaming agent according to claim 1, which is characterized in that include the component of following parts by weight：30 parts of polyethers silica
Alkane, 14 parts of Long carbon chains contain the surfactant of hydrophilic group, and 23 parts of higher aliphatics, 27 parts of dispersants, 7 parts of emulsifiers, 5 parts are helped
Agent, 380 parts of water and 18 parts of ethyl alcohol.
4. antifoaming agent according to claim 1, which is characterized in that the Long carbon chain contains the surfactant packet of hydrophilic group
Include odium stearate and sodium n-alkylbenzenesulfonate.
5. antifoaming agent according to claim 1, which is characterized in that the dispersant includes hydrophobic silica.
6. antifoaming agent according to claim 1, which is characterized in that the emulsifier includes dioctyl sodium sulfosuccinate.
7. antifoaming agent according to claim 1, which is characterized in that the auxiliary agent includes polyethylene wax, polyethyleneglycol first
Ether and sodium dehydroacetate.
8. a kind of preparation method of antifoaming agent, which is characterized in that include the following steps：
The surfactant that water and Long carbon chain contain hydrophilic group is added in reaction kettle and is stirred；
By polyether silicone, higher aliphatic, emulsifier, auxiliary agent and ethyl alcohol add in the reaction kettle and continue to stir；
Dispersant is added in into ultrasonic disperse in the reaction kettle, obtains antifoaming agent；
The surfactant that the polyether silicone and the Long carbon chain contain hydrophilic group adds in the reaction kettle in a manner of being added dropwise.
9. preparation method according to claim 8, which is characterized in that the temperature of the stirring is 20-50 DEG C, the stirring
Time be 1-2h.
10. preparation method according to claim 8, which is characterized in that the supersonic frequency of the ultrasonic disperse is 40-
60kHz。
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| CN111072093A (en) * | 2020-01-06 | 2020-04-28 | 龙岩水发环境发展有限公司 | Sewage pool backflow defoaming method |
| CN113082784A (en) * | 2020-01-08 | 2021-07-09 | 赢创运营有限公司 | Formulations and their use as defoamers |
| CN115400463A (en) * | 2022-09-22 | 2022-11-29 | 广东中联邦精细化工有限公司 | Biochemical aeration tank sewage treatment defoaming agent and preparation method thereof |
| CN116289309A (en) * | 2023-02-02 | 2023-06-23 | 江苏斯德瑞克化工有限公司 | Processing method of environment-friendly papermaking polyether defoamer |
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