CN109364535A - A kind of high temperature resistant defoaming agent - Google Patents
A kind of high temperature resistant defoaming agent Download PDFInfo
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- CN109364535A CN109364535A CN201811266440.6A CN201811266440A CN109364535A CN 109364535 A CN109364535 A CN 109364535A CN 201811266440 A CN201811266440 A CN 201811266440A CN 109364535 A CN109364535 A CN 109364535A
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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
- B01D19/0409—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance compounds containing Si-atoms
Abstract
The invention discloses a kind of high temperature resistant defoaming agents, belong to defoaming agent technical field.The present invention is using isocyanates, polyphenylene oxide as the compound defoaming base-material of raw material system, hydrophilic group and hydrophobic group are introduced in preparation process, it can be expansion by electrostatic interaction and component itself in compound process, constitute gel network, one layer of aeroge can also be formed, good heat insulation is played, vapor film is promoted comparatively fast to destroy, plays the role of thermal insulation layer；The present invention is to nano-bentonite modified, its suction-operated to active material can be improved, and the carrier as slow release, it can promote lather collapse, achieve the effect that defoaming, while the hydrogen chain formed in former foam and liquid can be broken, and then accelerates the further loss of foam wall, the surface tension for reducing foam wall part improves the performance of defoaming.The present invention solves the problems, such as that common defoaming agent high temperature resistant at present and the stability of defoaming are bad.
Description
Technical field
The invention belongs to defoaming agent technical fields, and in particular to a kind of high temperature resistant defoaming agent.
Background technique
Defoaming agent, also referred to as defomaing agent are to reduce surface tension in process, inhibit foam to generate or eliminate and have generated
Foam.Perhaps workable defoaming agent has the fatty acid ester compounded object of organosilicon emulsion-type, higher alcohols, polyoxyethylene polyoxypropylene season penta
Four alcohol ethers etc..Since lotion is a meta-stable system, phenomena such as often will appear demulsification in transport and use process, be layered,
Product quality is seriously affected, therefore how to improve the stability of emulsion of defoaming agent, is all defoaming agent preparation manufacturer institute all the time
The technical problem to be solved.
Defoaming agent is a kind of widely used fine chemicals, is mainly used for eliminating and inhibiting various unwanted bubbles.As
Defoaming agent should have insoluble in foam liquid or indissoluble, surface tension lower than foam liquid, with foam liquid have certain compatibility, with
Chemical reaction and the small grade fundamental characteristics of volatility do not occur for foam liquid.There are many type of defoaming agent, common on general industry
It is broadly divided into three classes: organic defoaming agent (alcohols, lipid, amide etc.), organic silicon defoamer and polyether antifoam agent.It is wherein organic
Silicon and polyether antifoam agent application field are the most extensive, and dosage is also larger.Organic silicon defoamer with its slightly solubility, low surface tension,
The advantages that preferable chemistry and thermal stability, outstanding antifoaming performance, receives significant attention, whether aqueous systems or
There are defoaming suds suppressing properties well in non-aqueous system.But due to its siloxane main chain in the environment of strong acid and strong base easy fracture and
The strong hydro-oleophobicity of itself is subject to certain restrictions it in the application of the industries such as biofermentation, copy paper, printing and dyeing.Polyethers defoaming
Agent is by ethylene oxide, a kind of nonionic surfactant of function admirable made from propylene oxide ring-opening polymerisation.It is widely used in
In aqueous systems, there are good hydrophily and antifoaming ability.But its antifoaming speed is not good enough, and temperature sensitive, need to cloud point with
Upper use.Inhibiting the common method of these foams is addition polyether antifoam agent or organic silicon defoamer, the defoaming of polyethers defoaming agent
Ability is weak, and foam inhibition ability is strong, and organic silicon defoaming agent brokenly bubble power is strong, antifoaming speed is fast, but foam inhibition ability is weak.But individually make
With polyether antifoam agent or the defoaming agent of organosilicon, defoaming and foam inhibition persistence duality immediately can not be often had both simultaneously
Matter.Therefore the producer having sells after mixing organic silicon defoamer and polyether antifoam agent, to obtain preferable resultant effect, but
Only two kinds of defoaming agents are simply mixed, not only comprehensive performance is still not ideal enough, but also this defoaming agent stability often exists
Problem, the generation for phenomena such as will lead to layering, when addition, will cause different periods antifoam content and the uneven situation of performance.
Therefore it provides a kind of preparation method of the high temperature resistant defoaming agent of stability that can be improved defoaming agent, heat-resisting quantity
It is very urgent.
Summary of the invention
The technical problems to be solved by the invention: bad for the stability of current common defoaming agent high temperature resistant and defoaming
Problem provides a kind of high temperature resistant defoaming agent.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of high temperature resistant defoaming agent, including following component: 8 ~ 15 parts of silicone oil, 3 ~ 7 parts of linolenic acids, 3 ~ 7 parts of emulsifiers, 2 ~ 5 parts it is anti-
Rotten agent, 2 ~ 5 parts of thickeners, further includes: 25 ~ 40 parts of compound defoaming base-materials, 8 ~ 15 parts of composite auxiliary materials.
The preparation method of the compound defoaming base-material, includes the following steps:
(1) according to parts by weight, 30 ~ 45 parts of isocyanates, 10 ~ 15 parts of polyphenylene oxide, 5 ~ 8 parts of dimethylformamides, 3 ~ 7 part two are taken
Hydroxymethyl propionic acid, 2 ~ 5 parts of 1,4-butanediol, 1 ~ 4 part of stannous octoate, 30 ~ 45 parts of reagent As, first take isocyanates, polyphenylene oxide, examination
Agent A mixing, is passed through nitrogen protection, after stirring 35 ~ 55min at 45 ~ 60 DEG C, is warming up to 65 ~ 85 DEG C, dimethyl formyl is added
Amine, dihydromethyl propionic acid, Isosorbide-5-Nitrae-butanediol, stannous octoate are mixed, and obtain reaction material, 1:14 ~ 20:3 in mass ratio takes lemon
Triethylenetetraminehexaacetic acid ester, water, reaction material are mixed, and obtain base-material, take base-material 20 ~ 30:0.1:3 in mass ratio ~ 7 addition auxiliary agent, modification swollen
Profit soil mixing, is stored at room temperature, filters, take filter residue and drying, obtain drying object；
(2) in 25 ~ 45 DEG C, 10 ~ 15:3:0.2 in mass ratio takes ethanol solution, drying object, neopelex mixing to stir
It mixes, obtains mixture, take mixture 12 ~ 20:0.1:5 in mass ratio that sodium peroxydisulfate, NaOH solution mixing is added, be passed through nitrogen guarantor
Shield is warming up to 48 ~ 58 DEG C of heat preservations and stands, cooling to get compound defoaming base-material.
Reagent A in the step (1): 1:15 ~ 25 take glutaraldehyde, CaCl in mass ratio2Solution mixes to get reagent A.
Auxiliary agent in the step (1): 1:3 ~ 6:0.1 in mass ratio takes iron chloride, polypropylene glycol, silane coupling agent KH-
560 mixing are to get auxiliary agent.
Modified alta-mud in the step (1): 1:7 ~ 12 take nano-bentonite, aqueous isopropanol mixing to stir in mass ratio
It mixes, grinds, filtering takes filter residue 8 ~ 12:1 in mass ratio that stearic acid mixing is added to get modified alta-mud.
The preparation of the composite auxiliary material: in 75 ~ 85 DEG C, 1:4 ~ 8:0.3 in mass ratio takes N-Methyl pyrrolidone, poly- diformazan
Radical siloxane, aniline are mixed, and are cooled to 20 ~ 25 DEG C, and filtering takes filtration cakes torrefaction, obtains dried object, is in mass ratio 5:1:12
~ 18 take dried object, lecithin, reagent B to be mixed, and obtain mixture, according to parts by weight, take 4 ~ 8 parts of white carbon blacks, 8 ~ 15 parts it is mixed
It closes material, 5 ~ 10 parts of acetic anhydride, 6 ~ 10 parts of pyridines to be mixed, sonic oscillation is stored at room temperature, and obtains composite auxiliary material.
The reagent B: 1:12 ~ 20 take urea, sodium carbonate liquor mixing to get reagent B in mass ratio.
The emulsifier: 1:2 ~ 4 take polyoxyethylene oleic acid ester, Sodium Polyacrylate mixing to get emulsifier in mass ratio.
The preservative: 5:1 ~ 3 take sodium benzoate, calcium propionate mixing to get preservative in mass ratio.
The thickener: 1:3 ~ 6 take sodium alginate, polyacrylamide mixing to get thickener in mass ratio.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention introduces hydrophilic group and dredges using isocyanates, polyphenylene oxide as raw material system compound defoaming base-material in preparation process
It is water base, under the action of subsequent alkaline, with self-emulsifying and dispersion performance, and by the modification of coupling agent, so that surface
Tension decline, composite auxiliary material ingredient is cooperated in use process, can security system there is lower surface-active, play good disappear
Effect is steeped, also, can be expansion by electrostatic interaction and component itself in compound process, gel network is constituted, can be improved
The adhesive ability of this system effective component, under hot environment, the partial solvent molecule in gel network volatilizees, and can also form one
Layer aeroge, plays good heat insulation, vapor film is promoted comparatively fast to destroy, play the role of thermal insulation layer；
(2) its suction-operated to active material can be improved, and as slow release to nano-bentonite modified in the present invention
Carrier, and the lecithin being added has more negative electrical charge, can provide electronics to the unoccupied orbital of iron ion, is adsorbed on metal watch
Face forms micro- glue nail effect, can be plugged into foam liquid wall, constitute mixed monolayer liquid film, so that its cohesion is bad, local viscosity
It reduces, thus lather collapse can be promoted, achieve the effect that defoaming, while the hydrogen chain formed in former foam and liquid can be broken, into
And the further loss of foam wall is accelerated, defoaming effect is significantly improved, meanwhile, cooperate N-Methyl pyrrolidone, poly dimethyl
The ingredients such as siloxanes eliminate the effect of the resistance foam wall rupture of foam itself in solution, reduce foam local surface tension
Increase and reduce drawing surrounding liquid film and promotes the paving on bubble film so that surface tension is uneven to the mobile power of thin point
Abduction can spread rapidly in foam surface and be unfolded, in expansion process that the surface of bubble film surface tool stabilization is living
Property agent molecule arranges, and reduces the surface tension of foam wall part, improves the performance of defoaming.
Specific embodiment
Emulsifier: 1:2 ~ 4 take polyoxyethylene oleic acid ester, Sodium Polyacrylate mixing to get emulsifier in mass ratio.
Thickener: 1:3 ~ 6 take sodium alginate, polyacrylamide mixing to get thickener in mass ratio.
Preservative: 5:1 ~ 3 take sodium benzoate, calcium propionate mixing to get preservative in mass ratio.
Reagent A: the CaCl that 1:15 ~ 25 take glutaraldehyde in mass ratio, mass fraction is 6%2Solution mixes to get reagent A.
Reagent B: the sodium carbonate liquor that 1:12 ~ 20 take urea in mass ratio, mass fraction is 20% mixes to get reagent B.
Auxiliary agent: 1:3 ~ 6:0.1 in mass ratio takes iron chloride, polypropylene glycol, silane coupling agent KH-560 mixing to get helping
Agent.
Modified alta-mud: the aqueous isopropanol that 1:7 ~ 12 take nano-bentonite in mass ratio, mass fraction is 8% mixes, with
400 ~ 700r/min, 40 ~ 60min of magnetic agitation, grinds 1 ~ 3h, and filtering takes filter residue 8 ~ 12:1 in mass ratio that stearic acid-mixed is added
It closes to get modified alta-mud.
The preparation method of compound defoaming base-material, includes the following steps:
(1) according to parts by weight, 30 ~ 45 parts of isocyanates, 10 ~ 15 parts of polyphenylene oxide, 5 ~ 8 parts of dimethylformamides, 3 ~ 7 part two are taken
Hydroxymethyl propionic acid, 2 ~ 5 parts of 1,4-butanediol, 1 ~ 4 part of stannous octoate, 30 ~ 45 parts of reagent As, first take isocyanates, polyphenylene oxide, examination
Agent A mixing, is passed through nitrogen protection, after stirring 35 ~ 55min at 45 ~ 60 DEG C, is warming up to 65 ~ 85 DEG C, dimethyl formyl is added
Amine, dihydromethyl propionic acid, Isosorbide-5-Nitrae-butanediol, stannous octoate mixing, with 700 ~ 1000r/min, 20 ~ 45min of insulated and stirred, obtain instead
It should expect, 1:14 ~ 20:3 in mass ratio takes triethyl citrate, water, reaction material to mix in reaction kettle, with 800 ~ 1200r/min magnetic
Power stirs 40 ~ 60min, obtains base-material, takes base-material 20 ~ 30:0.1:3 in mass ratio ~ 7 that auxiliary agent, modified alta-mud mixing, room temperature is added
8 ~ 15h is stood, filtering takes filter residue in 65 ~ 80 DEG C of 6 ~ 10h of oven drying, obtains drying object；
(2) in 25 ~ 45 DEG C, 10 ~ 15:3:0.2 in mass ratio takes the ethanol solution that volume fraction is 70%, drying object, dodecyl
Benzene sulfonic acid sodium salt is mixed in reaction kettle, with 450 ~ 700r/min, 35 ~ 60min of magnetic agitation, is obtained mixture, is taken mixture in mass ratio
The NaOH solution that sodium peroxydisulfate is added in 12 ~ 20:0.1:5, mass fraction is 12% is mixed, and is passed through nitrogen protection, is warming up to 48
After ~ 58 DEG C of heat preservations stand 1 ~ 3h, cooled to room temperature is to get compound defoaming base-material.
The preparation of composite auxiliary material: in 75 ~ 85 DEG C, 1:4 ~ 8:0.3 in mass ratio takes N-Methyl pyrrolidone, poly dimethyl silicon
Oxygen alkane, aniline are mixed in water heating kettle, after stirring 1 ~ 3h with 500 ~ 900r/min constant temperature, are cooled to 20 ~ 25 DEG C, filtering takes filter cake
In 65 ~ 90 DEG C of 4 ~ 8h of oven drying, dried object is obtained, takes dried object, lecithin, reagent B mixing in mass ratio for 5:1:12 ~ 18,
With 600 ~ 1000r/min, 40 ~ 60min of magnetic agitation, obtain mixture, according to parts by weight, take 4 ~ 8 parts of white carbon blacks, 8 ~ 15 parts it is mixed
Material, 5 ~ 10 parts of acetic anhydride, 6 ~ 10 parts of pyridines are closed in reaction kettle mixing, move into sonic oscillation instrument, it is super with 50 ~ 65kHz frequency
After 15 ~ 30min of sound oscillation, it is stored at room temperature 20 ~ for 24 hours, obtain composite auxiliary material.
A kind of high temperature resistant defoaming agent, according to the mass fraction, including following component: 8 ~ 15 parts of silicone oil, 3 ~ 7 parts of linolenic acids, 3 ~ 7
Part emulsifier, 2 ~ 5 portions of preservatives, 2 ~ 5 parts of thickeners, 25 ~ 40 parts of compound defoaming base-materials, 8 ~ 15 parts of composite auxiliary materials.
Embodiment 1
Emulsifier: 1:2 in mass ratio takes polyoxyethylene oleic acid ester, Sodium Polyacrylate mixing to get emulsifier.
Thickener: 1:3 in mass ratio takes sodium alginate, polyacrylamide mixing to get thickener.
Preservative: 5:1 in mass ratio takes sodium benzoate, calcium propionate mixing to get preservative.
Reagent A: the CaCl that 1:15 in mass ratio takes glutaraldehyde, mass fraction is 6%2Solution mixes to get reagent A.
Reagent B: 1:12 in mass ratio takes urea, the sodium carbonate liquor that mass fraction is 20% mixes to get reagent B.
Auxiliary agent: 1:3:0.1 in mass ratio takes iron chloride, polypropylene glycol, silane coupling agent KH-560 mixing to get auxiliary agent.
Modified alta-mud: the aqueous isopropanol that 1:7 in mass ratio takes nano-bentonite, mass fraction is 8% mixes, with
400r/min magnetic agitation 40min, grinds 1h, and filtering takes filter residue 8:1 in mass ratio that stearic acid mixing is added swollen to get modification
Profit soil.
The preparation method of compound defoaming base-material, includes the following steps:
(1) according to parts by weight, 30 parts of isocyanates, 10 parts of polyphenylene oxide, 5 parts of dimethylformamides, 3 parts of dihydroxymethyls third are taken
Acid, 2 parts of 1,4-butanediol, 1 part of stannous octoate, 30 parts of reagent As first take isocyanates, polyphenylene oxide, reagent A mixing, are passed through nitrogen
Protection after stirring 35min at 45 DEG C, is warming up to 65 DEG C, dimethylformamide, dihydromethyl propionic acid, Isosorbide-5-Nitrae-fourth two is added
Alcohol, stannous octoate mixing, with 700r/min insulated and stirred 20min, obtain reaction material, 1:14:3 in mass ratio takes lemon triethylenetetraminehexaacetic acid
Ester, water, reaction material are mixed in reaction kettle, with 800r/min magnetic agitation 40min, are obtained base-material, are taken base-material 20:0.1 in mass ratio:
3 are added auxiliary agent, modified alta-mud mixing, are stored at room temperature 8h, filter, take filter residue in 65 DEG C of oven drying 6h, obtain drying object；
(2) in 25 DEG C, 10:3:0.2 in mass ratio takes the ethanol solution that volume fraction is 70%, drying object, dodecyl benzene sulfonic acid
Sodium is mixed in reaction kettle, with 450r/min magnetic agitation 35min, obtains mixture, and mixture 12:0.1:5 in mass ratio is taken to be added
Sodium peroxydisulfate, the NaOH solution that mass fraction is 12% are mixed, and are passed through nitrogen protection, after being warming up to 48 DEG C of heat preservations standing 1h,
Cooled to room temperature is to get compound defoaming base-material.
The preparation of composite auxiliary material: in 75 DEG C, 1:4:0.3 in mass ratio take N-Methyl pyrrolidone, dimethyl silicone polymer,
Aniline is mixed in water heating kettle, after stirring 1h with 500r/min constant temperature, is cooled to 20 DEG C, filtering takes filter cake in 65 DEG C of oven dryings
4h obtains dried object, dried object, lecithin, reagent B mixing is taken in mass ratio for 5:1:12, with 600r/min magnetic agitation
40min obtains mixture, according to parts by weight, takes 4 parts of white carbon blacks, 8 parts of mixtures, 5 parts of acetic anhydride, 6 parts of pyridines mixed in reaction kettle
Stirring is closed, sonic oscillation instrument is moved into, after vibrating 15min with 50kHz frequency ultrasound, 20h is stored at room temperature, obtains composite auxiliary material.
A kind of high temperature resistant defoaming agent, according to the mass fraction, including following component: 8 parts of silicone oil, 3 parts of linolenic acids, 3 parts of emulsifications
Agent, 2 portions of preservatives, 2 parts of thickeners, 25 parts of compound defoaming base-materials, 8 parts of composite auxiliary materials.
Embodiment 2
Emulsifier: 1:3 in mass ratio takes polyoxyethylene oleic acid ester, Sodium Polyacrylate mixing to get emulsifier.
Thickener: 1:5 in mass ratio takes sodium alginate, polyacrylamide mixing to get thickener.
Preservative: 5:2 in mass ratio takes sodium benzoate, calcium propionate mixing to get preservative.
Reagent A: the CaCl that 1:20 in mass ratio takes glutaraldehyde, mass fraction is 6%2Solution mixes to get reagent A.
Reagent B: 1:18 in mass ratio takes urea, the sodium carbonate liquor that mass fraction is 20% mixes to get reagent B.
Auxiliary agent: 1:5:0.1 in mass ratio takes iron chloride, polypropylene glycol, silane coupling agent KH-560 mixing to get auxiliary agent.
Modified alta-mud: the aqueous isopropanol that 1:9 in mass ratio takes nano-bentonite, mass fraction is 8% mixes, with
500r/min magnetic agitation 50min, grinds 2h, and filtering takes filter residue 10:1 in mass ratio that stearic acid mixing is added swollen to get modification
Profit soil.
The preparation method of compound defoaming base-material, includes the following steps:
(1) according to parts by weight, 35 parts of isocyanates, 12 parts of polyphenylene oxide, 6 parts of dimethylformamides, 5 parts of dihydroxymethyls third are taken
Acid, 3 parts of 1,4-butanediol, 3 parts of stannous octoates, 35 parts of reagent As first take isocyanates, polyphenylene oxide, reagent A mixing, are passed through nitrogen
Protection after stirring 45min at 50 DEG C, is warming up to 75 DEG C, dimethylformamide, dihydromethyl propionic acid, Isosorbide-5-Nitrae-fourth two is added
Alcohol, stannous octoate mixing, with 900r/min insulated and stirred 35min, obtain reaction material, 1:16:3 in mass ratio takes lemon triethylenetetraminehexaacetic acid
Ester, water, reaction material are mixed in reaction kettle, with 900r/min magnetic agitation 50min, are obtained base-material, are taken base-material 25:0.1 in mass ratio:
5 are added auxiliary agent, modified alta-mud mixing, are stored at room temperature 12h, filter, take filter residue in 70 DEG C of oven drying 8h, obtain drying object；
(2) in 35 DEG C, 13:3:0.2 in mass ratio takes the ethanol solution that volume fraction is 70%, drying object, dodecyl benzene sulfonic acid
Sodium is mixed in reaction kettle, with 500r/min magnetic agitation 50min, obtains mixture, and mixture 18:0.1:5 in mass ratio is taken to be added
Sodium peroxydisulfate, the NaOH solution that mass fraction is 12% are mixed, and are passed through nitrogen protection, after being warming up to 50 DEG C of heat preservations standing 2h,
Cooled to room temperature is to get compound defoaming base-material.
The preparation of composite auxiliary material: in 80 DEG C, 1:6:0.3 in mass ratio take N-Methyl pyrrolidone, dimethyl silicone polymer,
Aniline is mixed in water heating kettle, after stirring 2h with 700r/min constant temperature, is cooled to 22 DEG C, filtering takes filter cake in 70 DEG C of oven dryings
6h obtains dried object, dried object, lecithin, reagent B mixing is taken in mass ratio for 5:1:16, with 800r/min magnetic agitation
50min obtains mixture, according to parts by weight, takes 6 parts of white carbon blacks, 12 parts of mixtures, 8 parts of acetic anhydride, 8 parts of pyridines in reaction kettle
It is mixed, moves into sonic oscillation instrument, after vibrating 20min with 55kHz frequency ultrasound, be stored at room temperature 22h, obtain composite auxiliary material.
A kind of high temperature resistant defoaming agent, according to the mass fraction, including following component: 12 parts of silicone oil, 5 parts of linolenic acids, 5 parts of emulsifications
Agent, 3 portions of preservatives, 3 parts of thickeners, 30 parts of compound defoaming base-materials, 12 parts of composite auxiliary materials.
Embodiment 3
Emulsifier: 1:4 in mass ratio takes polyoxyethylene oleic acid ester, Sodium Polyacrylate mixing to get emulsifier.
Thickener: 1:6 in mass ratio takes sodium alginate, polyacrylamide mixing to get thickener.
Preservative: 5:3 in mass ratio takes sodium benzoate, calcium propionate mixing to get preservative.
Reagent A: the CaCl that 1:25 in mass ratio takes glutaraldehyde, mass fraction is 6%2Solution mixes to get reagent A.
Reagent B: 1:20 in mass ratio takes urea, the sodium carbonate liquor that mass fraction is 20% mixes to get reagent B.
Auxiliary agent: 1:6:0.1 in mass ratio takes iron chloride, polypropylene glycol, silane coupling agent KH-560 mixing to get auxiliary agent.
Modified alta-mud: the aqueous isopropanol that 1:12 in mass ratio takes nano-bentonite, mass fraction is 8% mixes, with
700r/min magnetic agitation 60min, grinds 3h, and filtering takes filter residue 12:1 in mass ratio that stearic acid mixing is added swollen to get modification
Profit soil.
The preparation method of compound defoaming base-material, includes the following steps:
(1) according to parts by weight, 45 parts of isocyanates, 15 parts of polyphenylene oxide, 8 parts of dimethylformamides, 7 parts of dihydroxymethyls third are taken
Acid, 5 parts of 1,4-butanediol, 4 parts of stannous octoates, 45 parts of reagent As first take isocyanates, polyphenylene oxide, reagent A mixing, are passed through nitrogen
Protection after stirring 55min at 60 DEG C, is warming up to 85 DEG C, dimethylformamide, dihydromethyl propionic acid, Isosorbide-5-Nitrae-fourth two is added
Alcohol, stannous octoate mixing, with 1000r/min insulated and stirred 45min, obtain reaction material, 1:20:3 in mass ratio takes lemon triethylenetetraminehexaacetic acid
Ester, water, reaction material are mixed in reaction kettle, with 1200r/min magnetic agitation 60min, are obtained base-material, are taken base-material in mass ratio 30:
Auxiliary agent, modified alta-mud mixing is added in 0.1:7, is stored at room temperature 15h, filters, take filter residue in 80 DEG C of oven drying 10h, must dry
Object；
(2) in 45 DEG C, 15:3:0.2 in mass ratio takes the ethanol solution that volume fraction is 70%, drying object, dodecyl benzene sulfonic acid
Sodium is mixed in reaction kettle, with 700r/min magnetic agitation 60min, obtains mixture, and mixture 20:0.1:5 in mass ratio is taken to be added
Sodium peroxydisulfate, the NaOH solution that mass fraction is 12% are mixed, and are passed through nitrogen protection, after being warming up to 58 DEG C of heat preservations standing 3h,
Cooled to room temperature is to get compound defoaming base-material.
The preparation of composite auxiliary material: in 85 DEG C, 1:8:0.3 in mass ratio take N-Methyl pyrrolidone, dimethyl silicone polymer,
Aniline is mixed in water heating kettle, after stirring 3h with 900r/min constant temperature, is cooled to 25 DEG C, filtering takes filter cake in 90 DEG C of oven dryings
8h obtains dried object, dried object, lecithin, reagent B mixing is taken in mass ratio for 5:1:18, with 1000r/min magnetic agitation
60min obtains mixture, according to parts by weight, takes 8 parts of white carbon blacks, 15 parts of mixtures, 10 parts of acetic anhydride, 10 parts of pyridines in reaction
Kettle is mixed, and moves into sonic oscillation instrument, after vibrating 30min with 65kHz frequency ultrasound, is stored at room temperature for 24 hours, obtains composite auxiliary material.
A kind of high temperature resistant defoaming agent, according to the mass fraction, including following component: 15 parts of silicone oil, 7 parts of linolenic acids, 7 parts of emulsifications
Agent, 5 portions of preservatives, 5 parts of thickeners, 40 parts of compound defoaming base-materials, 15 parts of composite auxiliary materials.
Comparative example 1: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking compound defoaming base-material.
Comparative example 2: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking composite auxiliary material.
Comparative example 3: the high temperature resistant defoaming agent of Wuxi City company production.
Embodiment and comparative example are tested according to GB/T 26527-2011 standard, test result is as shown in table 1.
Table 1
High temperature resistant defoaming agent produced by the present invention maintains 90% or more in defoaming agent after a week, and at a high temperature of 90 DEG C,
Enduring quality is good, and defoamed ratio is high, and high temperature resistance is good, has broad application prospects.
The foregoing is merely preferred modes of the invention, are not intended to limit the invention, all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of high temperature resistant defoaming agent, according to the mass fraction, including following component: 8 ~ 15 parts of silicone oil, 3 ~ 7 parts of linolenic acids, 3 ~ 7 parts
Emulsifier, 2 ~ 5 portions of preservatives, 2 ~ 5 parts of thickeners, which is characterized in that further include: 25 ~ 40 parts of compound defoaming base-materials, 8 ~ 15 parts it is multiple
Close auxiliary material.
2. a kind of high temperature resistant defoaming agent according to claim 1, which is characterized in that the preparation side of the compound defoaming base-material
Method includes the following steps:
(1) according to parts by weight, 30 ~ 45 parts of isocyanates, 10 ~ 15 parts of polyphenylene oxide, 5 ~ 8 parts of dimethylformamides, 3 ~ 7 part two are taken
Hydroxymethyl propionic acid, 2 ~ 5 parts of 1,4-butanediol, 1 ~ 4 part of stannous octoate, 30 ~ 45 parts of reagent As, first take isocyanates, polyphenylene oxide, examination
Agent A mixing, is passed through nitrogen protection, after stirring 35 ~ 55min at 45 ~ 60 DEG C, is warming up to 65 ~ 85 DEG C, dimethyl formyl is added
Amine, dihydromethyl propionic acid, Isosorbide-5-Nitrae-butanediol, stannous octoate are mixed, and obtain reaction material, 1:14 ~ 20:3 in mass ratio takes lemon
Triethylenetetraminehexaacetic acid ester, water, reaction material are mixed, and obtain base-material, take base-material 20 ~ 30:0.1:3 in mass ratio ~ 7 addition auxiliary agent, modification swollen
Profit soil mixing, is stored at room temperature, filters, take filter residue and drying, obtain drying object；
(2) in 25 ~ 45 DEG C, 10 ~ 15:3:0.2 in mass ratio takes ethanol solution, drying object, neopelex mixing to stir
It mixes, obtains mixture, take mixture 12 ~ 20:0.1:5 in mass ratio that sodium peroxydisulfate, NaOH solution mixing is added, be passed through nitrogen guarantor
Shield is warming up to 48 ~ 58 DEG C of heat preservations and stands, cooling to get compound defoaming base-material.
3. a kind of high temperature resistant defoaming agent according to claim 2, which is characterized in that the reagent A in the step (1): pressing matter
Amount takes glutaraldehyde, CaCl than 1:15 ~ 252Solution mixes to get reagent A.
4. a kind of high temperature resistant defoaming agent according to claim 2, which is characterized in that the auxiliary agent in the step (1): pressing quality
Take iron chloride, polypropylene glycol, silane coupling agent KH-560 mixing to get auxiliary agent than 1:3 ~ 6:0.1.
5. a kind of high temperature resistant defoaming agent according to claim 2, which is characterized in that the modified alta-mud in the step (1):
1:7 ~ 12 take nano-bentonite, aqueous isopropanol to be mixed in mass ratio, grind, and filtering takes filter residue 8 ~ 12:1 in mass ratio
Stearic acid mixing is added to get modified alta-mud.
6. a kind of high temperature resistant defoaming agent according to claim 1, which is characterized in that the preparation of the composite auxiliary material: in 75 ~ 85
DEG C, 1:4 ~ 8:0.3 in mass ratio takes N-Methyl pyrrolidone, dimethyl silicone polymer, aniline to be mixed, and is cooled to 20 ~ 25
DEG C, filtering takes filtration cakes torrefaction, obtains dried object, and take dried object, lecithin, reagent B to be mixed for 5:1:12 ~ 18 in mass ratio,
Mixture is obtained, according to parts by weight, takes 4 ~ 8 parts of white carbon blacks, 8 ~ 15 parts of mixtures, 5 ~ 10 parts of acetic anhydride, 6 ~ 10 parts of pyridines mixing
Stirring, sonic oscillation are stored at room temperature, and obtain composite auxiliary material.
7. a kind of high temperature resistant defoaming agent according to claim 6, which is characterized in that the reagent B: 1:12 ~ 20 in mass ratio
Take urea, sodium carbonate liquor mixing to get reagent B.
8. a kind of high temperature resistant defoaming agent according to claim 1, which is characterized in that the emulsifier: 1:2 ~ 4 take in mass ratio
Polyoxyethylene oleic acid ester, Sodium Polyacrylate mixing are to get emulsifier.
9. a kind of high temperature resistant defoaming agent according to claim 1, which is characterized in that the preservative: 5:1 ~ 3 take in mass ratio
Sodium benzoate, calcium propionate mixing are to get preservative.
10. a kind of high temperature resistant defoaming agent according to claim 1, which is characterized in that the thickener: 1:3 ~ 6 in mass ratio
Take sodium alginate, polyacrylamide mixing to get thickener.
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| CN112742072A (en) * | 2020-12-16 | 2021-05-04 | 苏州恒康新材料有限公司 | High-temperature-resistant defoaming agent, production line and process |
| CN114949941A (en) * | 2022-08-01 | 2022-08-30 | 广州嘉德乐生化科技有限公司 | Defoaming agent containing glyceryl monostearate and application of defoaming agent in medical industry |
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