CN110124359A - A kind of preparation method of modified organic silicon defoaming agent - Google Patents
A kind of preparation method of modified organic silicon defoaming agent Download PDFInfo
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- CN110124359A CN110124359A CN201910416596.6A CN201910416596A CN110124359A CN 110124359 A CN110124359 A CN 110124359A CN 201910416596 A CN201910416596 A CN 201910416596A CN 110124359 A CN110124359 A CN 110124359A
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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 present invention relates to a kind of preparation methods of modified organic silicon defoaming agent, belong to defoaming agent technical field.The present invention passes through addition containing hydrogen silicone oil and Fumed silica, prepare modified organic silicon defoaming agent, containing hydrogen silicone oil has very low surface tension, into after air bubble liquid-membrane, replace the surface active molecules on original liquid film surface, the surface tension of contact position is set to drop lower than its elsewhere of liquid film, bubble film with high surface tension will generate convergent force, the liquid film for keeping surface tension low is drawn by surrounding, extend, form the poor film of intensity, it is thinning at leisure, self-regeneration effect is lost because effective elastic contractile force cannot be generated, viscosity reduces, drain age velocity and gas diffusion velocity are accelerated, the addition of Fumed silica, replace foam stabilizer from liquid film surface from generating hydrogen bond, reduce the surface viscosity of liquid film, the diffusion velocity of the drain age velocity and gas that make bubble film is accelerated, the service life for shortening foam can reduce Foam solution film strength.
Description
Technical field
The present invention relates to a kind of preparation methods of modified organic silicon defoaming agent, belong to defoaming agent technical field.
Background technique
In many production fields, slurrying as well known and papermaking, fermentation (pharmacy and food), petroleum and natural
Gas, froth flotation, wastewater treatment, the dyeing of textile, the preparation of phosphoric acid, the production of food and beverage and other various chemical industry
Production process, there are great quantities of spare foams, have seriously affected production efficiency and product quality.The presence of foam has seriously affected life
Produce efficiency.In order to eliminate excessive foam, production efficiency is improved, defoaming and foam inhibitor all become a kind of necessity.
In many cases, the most effective approach for controlling foam be exactly be added it is some can prevent foam generate or can
Eliminate the chemical assistant of foam.Have been used for as defoaming and the chemical assistant of foam inhibition ingredient including various oil, as silicone oil,
Mineral oil, triglycerides, fluorocarbon etc.；There are some use hydrophobic particles defoamings and foam inhibition, such as uses hydrophobic silicic aerogels, calcium
Soap, wax, plastic pellet etc.；Defoaming/foam inhibitor is made using oil and hydrophobic particles mixed system in some；Also some is using various each
The amphiphile, amphiphilic molecule of sample, as alcohols, fatty acid and fatty lipid, some particular polymers with partial solubility can also reach
To antifoam performance.
The stability of foam refers to the complexity of lather collapse.It itself with regard to foam, is a thermodynamics shakiness
Determine system, defoaming process is the process that surface can be reduced, be one can spontaneous progress process and a formation stabilising system
Process.The process of lather collapse, the liquid for mainly forming bubble film are constantly discharged, and liquid film is gradually thinning until broken
The process split.Therefore, the stability of foam depends primarily on to form the strong of the drain age velocity of liquid in bubble film and liquid film
Degree.And the two influence factors specifically can major component are as follows: surface tension, surface viscosity, liquid viscosity, gas it is saturating
The influence of the property crossed and surface charge.
Nowadays, the method Main physical of defoaming and chemical two methods.Physical method mainly has:
(1) change system temperature, liquid is made to freeze or evaporate；
(2) sharply change system pressure, allowing bubble film two sides to generate pressure difference makes lather collapse；
(3) centrifugal process brokenly bubble is used；
(4) make lather collapse by means such as ultrasonic vibration, X-ray, filterings.Chemical method is mainly exactly by the way that defoaming is added
Agent changes foam surface layer tension and surface film-strength, realizes the effect of lather collapse.
The third time innovation of defoaming agent is the research and development of organic silicon defoaming agent, and this defoaming agent is at present in many chemical industry, print
The fields such as dye, papermaking are widely used.Such defoaming agent can be applied to each process of paper industry, and defoaming effectiveness is very high, disappears
The bubble duration is long, good dispersion, and attachment is few in slurry, can reduce pitch trouble, however foam inhibition effect is sometimes barely satisfactory, and
And such defoaming agent is at high cost, easy fouling, if emulsifying technology is unqualified, can generate silicone oil cohesion, be attached in slurry, make product
Surface generates spot, or even can cause to be glued bad Deng other problems.
Summary of the invention
The technical problems to be solved by the invention: for existing organic silicon defoaming agent, defoaming capacity is unstable in a liquid
The problem of, provide a kind of preparation method of modified organic silicon defoaming agent.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) polyisobutene succinimide, fume colloidal silica are added in methyl-silicone oil, are placed in supersonic wave cleaning machine ultrasonic
30~40min is shaken, then is placed under 140~150 DEG C of oil baths and 4~5h is stirred to react with 400~600r/min revolving speed, room temperature is cold
But, polyisobutene succinimide modified silicon cream is obtained；
(2) polyisobutene succinimide modified silicon cream is added in containing hydrogen silicone oil, is stirred under room temperature with 300~400r/min revolving speed
1~2h is mixed, compound silicone oil is obtained；
(3) alkyl phenol polyoxyethylene ether, compound silicone oil are added to absolute ethanol, be placed under 40~45 DEG C of water-baths with 600~
800r/min revolving speed stirs 0.5~1h, obtains mixed liquor；
(4) polyvinyl alcohol is added in deionized water, to stir 3~5min under 100r/min revolving speed under room temperature, obtains polyvinyl alcohol
Solution；
(5) by polyvinyl alcohol water solution be added mixed liquor in, under room temperature with 1500~1600r/min revolving speed high-speed stirred 25~
30min, then it is placed in 20~30min of shearing under high-shear emulsion machine, obtain modified organic silicon defoaming agent.
The polyisobutene succinimide, methyl-silicone oil, fume colloidal silica, containing hydrogen silicone oil, alkyl phenol polyoxy second
Alkene ether, polyvinyl alcohol, dehydrated alcohol, deionized water parts by weight be 5~10 parts of polyisobutene succinimides, 80~100 parts
Methyl-silicone oil, 3~5 parts of fume colloidal silicas, 40~50 parts of containing hydrogen silicone oils, 3~5 parts of alkyl phenol polyoxyethylene ether, 10~20 parts
Polyvinyl alcohol, 40~60 parts of dehydrated alcohols, 60~80 parts of deionized waters.
The average grain diameter of fume colloidal silica described in step (1) is 30~50nm.
The specific preparation step of polyisobutene succinimide described in step (1) are as follows:
(1) the dilute amine of second is added in toluene, 10~15min is stirred with 200~300r/min revolving speed under room temperature, obtains ethylene carbaryl
Solution；
(2) polyisobutylene succinic anhydride is added in vinylamine toluene solution, is passed through protection nitrogen, the constant temperature at 100~120 DEG C
5~6h is reacted, vacuum distillation obtains polyisobutene succinimide.
The vinylamine, toluene, polyisobutylene succinic anhydride parts by weight be 10~20 parts of vinylamines, 40~60 parts of first
Benzene, 20~30 parts of polyisobutylene succinic anhydrides.
The air velocity of nitrogen described in step (2) is 20~30mL/min.
The specific preparation step of polyisobutylene succinic anhydride described in step (2) are as follows:
(1) by benzyl alcohol, the dilute addition maleic anhydride of the poly- isobutyl of high activity, it is passed through protection nitrogen, is placed in 25~30 DEG C of water-baths
25~30min is stirred with 100r/min revolving speed, obtains mixed solution；
(2) mixed solution is warming up to 170~190 DEG C and 10~12h of isothermal reaction, obtains reaction solution, reaction solution is filtered, takes filter
Liquid, vacuum distillation, obtains polyisobutylene succinic anhydride.
The high-activity polyisobutene, benzyl alcohol, maleic anhydride parts by weight be 10~20 parts of high-activity polyisobutenes,
10~20 parts of benzyl alcohols, 40~50 parts of maleic anhydrides.
The air velocity of nitrogen described in step (1) is 20~30mL/min.
The dilute molecular weight of the poly- isobutyl of high activity described in step (1) is 3000~5000.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention is modified silicon cream by polyisobutene succinimide, prepares modified organic silicon defoaming agent, poly- isobutyl
In alkene succimide modified organic silicon defoaming agent, the dilute group of poly- isobutyl of polyisobutene succinimide can be by chemical anti-
It answers, the substance with polysiloxanes segment is combined, so that polyolefin chain is formed steric hindrance in liquid-phase system, subtract significantly
The mutual collision for having lacked particle in liquid phase can significantly improve organosilicon in emulsion process the phenomenon that silicone oil cohesion, and poly- isobutyl is dilute
Reinforce the hydrophily of modified organic silicon, the congruence with other water-soluble substances can be improved, and can adapt to strong acid, strong
Alkali, hot environment substantially increase defoaming agent use scope, while the spy that there is modified defoaming agent to have suds suppressing properties good
Point, the hydrophobicity of modified organic silicon can be improved in hydrophobic polysiloxanes segment, and makes it have low surface tension, increases
The antifoam performance of strong defoaming agent, while also having many advantages, such as low volatility, physiological inertia, free from environmental pollution, and polyisobutene
The quantity and ratio of molecule in the adjustable polysiloxanes of succimide, with this promoted organic silicon defoamer to water or oil
The characteristics of dissolubility changes the cloud point of itself, makes it have low surface tension, thus have it is good disappear, suds suppressing properties；
(2) present invention prepares modified organic silicon defoaming agent, containing hydrogen silicone oil has by addition containing hydrogen silicone oil and Fumed silica
Very low surface tension is easy to be adsorbed on solution surface, makes the reduction of solution surface local surface tension, then locally occurs since then
It sprawls, into after air bubble liquid-membrane, replaces the surface active molecules on original liquid film surface, the surface tension of contact position is made to drop to obtain ratio
Its elsewhere of liquid film it is lower, convergent force will be generated with the bubble film of high surface tension, make the liquid film quilt that surface tension is low
Surrounding traction is extended, and the poor film of intensity is formed, thinning at leisure, is lost because that cannot generate effective elastic contractile force certainly
My repair, viscosity substantially reduce, and the drain age velocity of bubble film and the diffusion velocity of gas are accelerated, Fumed silica
Addition, replace foam stabilizer from liquid film surface from generating hydrogen bond, the surface viscosity of liquid film can be reduced, make foam solution
The drain age velocity of film and the diffusion velocity of gas are accelerated, and can reduce foam solution film strength so as to shorten the service life of foam, be allowed to
It is thinning to die down, that is, it can reach the purpose effectively defoamed, the modified organic silicon defoaming agent of containing hydrogen silicone oil and Fumed silica be added
The surface tension of droplet is lower than the surface tension of bubble film, after defoaming agent is added to foam system, defoaming agent droplet and bubble
The contact of foam liquid film can be such that bubble film surface tension herein reduces, and the surface tension of liquid film is around foam almost without hair
Changing, therefore the part that surface tension reduces consumingly is drawn around, is extended, finally rupture makes the removal of foam, defoams
Agent, which destroys film elasticity, makes liquid film lose self-repair function, after the extremely low defoaming agent of surface tension is added in foam system, can make
The surface tension of liquid film is down to extremely low herein, and liquid film is made to follow the string, when liquid film herein is drawn by extraneous disturbance or impact
When long, liquid film will not generate effective elastic contractile force and restore come the surface tension for making film and thickness of liquid film, and liquid film is because losing certainly
Repair and be destroyed, to achieve the effect that defoaming.
Specific embodiment
According to parts by weight, 10~20 parts of high-activity polyisobutenes, 10~20 parts of benzyl alcohols, 40~50 portions of horses are weighed respectively
Carry out acid anhydrides, by benzyl alcohol, the dilute addition maleic anhydride of the poly- isobutyl of high activity, protection is passed through with the air velocity of 20~30mL/min
Nitrogen is placed in 25~30 DEG C of water-baths and stirs 25~30min with 100r/min revolving speed, obtains mixed solution, mixed solution is heated up
To 170~190 DEG C and 10~12h of isothermal reaction, reaction solution is obtained, reaction solution is filtered, takes filtrate, is evaporated under reduced pressure, obtain poly- isobutyl
Allyl succinic anhydride, then according to parts by weight, 10~20 parts of vinylamines, 40~60 parts of toluene, 20~30 parts of poly- isobutyls are weighed respectively
The dilute amine of second is added in toluene, stirs 10~15min under room temperature with 200~300r/min revolving speed, obtain vinylamine by allyl succinic anhydride
Polyisobutylene succinic anhydride is added in vinylamine toluene solution, is passed through guarantor with 20~30mL/min air velocity by toluene solution
Nitrogen is protected, 5~6h of isothermal reaction at 100~120 DEG C is placed in, is evaporated under reduced pressure, obtains polyisobutene succinimide, then by weight
Number meter, respectively weigh 5~10 parts of polyisobutene succinimides, 80~100 parts of methyl-silicone oils, 3~5 parts of fume colloidal silicas,
40~50 parts of containing hydrogen silicone oils, 3~5 parts of alkyl phenol polyoxyethylene ether, 10~20 parts of polyvinyl alcohol, 40~60 parts of dehydrated alcohols, 60
Polyisobutene succinimide, fume colloidal silica are added in methyl-silicone oil, are placed in ultrasonic cleaning by~80 parts of deionized waters
30~40min of ultrasonic vibration in machine, then be placed under 140~150 DEG C of oil baths and 4~5h is stirred to react with 400~600r/min revolving speed,
Room temperature cooling obtains polyisobutene succinimide modified silicon cream, and Silicon Containing Hydrogen is added in polyisobutene succinimide modified silicon cream
In oil, 1~2h is stirred with the revolving speed of 300~400r/min, compound silicone oil is obtained, alkyl phenol polyoxyethylene ether, compound silicone oil is added
Enter in dehydrated alcohol, is placed under 40~45 DEG C of water-baths and 0.5~1h is stirred with 600~800r/min revolving speed, mixed liquor is obtained, by poly- second
Enol is added in deionized water, to stir 3~5min under 100r/min revolving speed under room temperature, poly-vinyl alcohol solution is obtained, by polyethylene
Alcohol solution is added in mixed liquor, with 1500~1600r/min revolving speed 25~30min of high-speed stirred under room temperature, then is placed in height and cuts
20~30min of shearing under mulser is cut, modified organic silicon defoaming agent is obtained.
Example 1
Polyisobutene succinimide, fume colloidal silica are added in methyl-silicone oil, ultrasound shake in supersonic wave cleaning machine is placed in
30min is swung, then is placed under 140 DEG C of oil baths and 4h is stirred to react with 400r/min revolving speed, it is sub- to obtain polyisobutene succinyl for room temperature cooling
Amine modified silicon cream；Polyisobutene succinimide modified silicon cream is added in containing hydrogen silicone oil, is stirred under room temperature with 300r/min revolving speed
1h is mixed, compound silicone oil is obtained；Alkyl phenol polyoxyethylene ether, compound silicone oil are added to absolute ethanol, be placed under 40 DEG C of water-baths with
600r/min revolving speed stirs 0.5h, obtains mixed liquor；Polyvinyl alcohol is added in deionized water, under room temperature under 100r/min revolving speed
3min is stirred, poly-vinyl alcohol solution is obtained；Polyvinyl alcohol water solution is added in mixed liquor, it is high with 1500r/min revolving speed under room temperature
Speed stirring 25min, then be placed under high-shear emulsion machine and shear 20min, obtain modified organic silicon defoaming agent.Polyisobutene succinyl is sub-
Amine, methyl-silicone oil, fume colloidal silica, containing hydrogen silicone oil, alkyl phenol polyoxyethylene ether, polyvinyl alcohol, dehydrated alcohol, deionized water
Parts by weight be 5 parts of polyisobutene succinimides, 80 parts of methyl-silicone oils, 3 parts of fume colloidal silicas, 40 parts of containing hydrogen silicone oils, 3 parts
Alkyl phenol polyoxyethylene ether, 10 parts of polyvinyl alcohol, 40 parts of dehydrated alcohols, 60 parts of deionized waters.The average grain of fume colloidal silica
Diameter is 30nm.The specific preparation step of polyisobutene succinimide are as follows: the dilute amine of second is added in toluene, with 200r/ under room temperature
Min revolving speed stirs 10min, obtains vinylamine toluene solution；Polyisobutylene succinic anhydride is added in vinylamine toluene solution, is passed through
Nitrogen, the isothermal reaction 5h at 100 DEG C are protected, vacuum distillation obtains polyisobutene succinimide.Vinylamine, toluene, poly- isobutyl
The parts by weight of allyl succinic anhydride are 10 parts of vinylamines, 40 parts of toluene, 20 parts of polyisobutylene succinic anhydrides.The air velocity of nitrogen is
20mL/min.The specific preparation step of polyisobutylene succinic anhydride are as follows: by benzyl alcohol, the dilute addition maleic anhydride of the poly- isobutyl of high activity
In, it is passed through protection nitrogen, is placed in 25 DEG C of water-baths and 25min is stirred with 100r/min revolving speed, obtain mixed solution；By mixed solution liter
Temperature obtains reaction solution, reaction solution is filtered, take filtrate to 170 DEG C and isothermal reaction 10h, is evaporated under reduced pressure, obtains polyisobutylene succinic acid
Acid anhydride.High-activity polyisobutene, benzyl alcohol, maleic anhydride parts by weight be 10 parts of high-activity polyisobutenes, 10 parts of benzyl alcohols, 40 parts
Maleic anhydride.The air velocity of nitrogen is 20mL/min.The dilute molecular weight of the poly- isobutyl of high activity is 3000.
Example 2
Polyisobutene succinimide, fume colloidal silica are added in methyl-silicone oil, ultrasound shake in supersonic wave cleaning machine is placed in
35min is swung, then is placed under 145 DEG C of oil baths and 4h is stirred to react with 500r/min revolving speed, it is sub- to obtain polyisobutene succinyl for room temperature cooling
Amine modified silicon cream；Polyisobutene succinimide modified silicon cream is added in containing hydrogen silicone oil, is stirred under room temperature with 350r/min revolving speed
1h is mixed, compound silicone oil is obtained；Alkyl phenol polyoxyethylene ether, compound silicone oil are added to absolute ethanol, be placed under 42 DEG C of water-baths with
700r/min revolving speed stirs 0.8h, obtains mixed liquor；Polyvinyl alcohol is added in deionized water, under room temperature under 100r/min revolving speed
4min is stirred, poly-vinyl alcohol solution is obtained；Polyvinyl alcohol water solution is added in mixed liquor, it is high with 1550r/min revolving speed under room temperature
Speed stirring 28min, then be placed under high-shear emulsion machine and shear 25min, obtain modified organic silicon defoaming agent.Polyisobutene succinyl is sub-
Amine, methyl-silicone oil, fume colloidal silica, containing hydrogen silicone oil, alkyl phenol polyoxyethylene ether, polyvinyl alcohol, dehydrated alcohol, deionized water
Parts by weight be 8 parts of polyisobutene succinimides, 90 parts of methyl-silicone oils, 4 parts of fume colloidal silicas, 45 parts of containing hydrogen silicone oils, 4 parts
Alkyl phenol polyoxyethylene ether, 15 parts of polyvinyl alcohol, 50 parts of dehydrated alcohols, 70 parts of deionized waters.The average grain of fume colloidal silica
Diameter is 40nm.The specific preparation step of polyisobutene succinimide are as follows: the dilute amine of second is added in toluene, with 250r/ under room temperature
Min revolving speed stirs 12min, obtains vinylamine toluene solution；Polyisobutylene succinic anhydride is added in vinylamine toluene solution, is passed through
Nitrogen, the isothermal reaction 5h at 110 DEG C are protected, vacuum distillation obtains polyisobutene succinimide.Vinylamine, toluene, poly- isobutyl
The parts by weight of allyl succinic anhydride are 15 parts of vinylamines, 50 parts of toluene, 25 parts of polyisobutylene succinic anhydrides.The air velocity of nitrogen is
25mL/min.The specific preparation step of polyisobutylene succinic anhydride are as follows: by benzyl alcohol, the dilute addition maleic anhydride of the poly- isobutyl of high activity
In, it is passed through protection nitrogen, is placed in 28 DEG C of water-baths and 28min is stirred with 100r/min revolving speed, obtain mixed solution；By mixed solution liter
Temperature obtains reaction solution, reaction solution is filtered, take filtrate to 180 DEG C and isothermal reaction 11h, is evaporated under reduced pressure, obtains polyisobutylene succinic acid
Acid anhydride.High-activity polyisobutene, benzyl alcohol, maleic anhydride parts by weight be 15 parts of high-activity polyisobutenes, 15 parts of benzyl alcohols, 45 parts
Maleic anhydride.The air velocity of nitrogen is 25mL/min.The dilute molecular weight of the poly- isobutyl of high activity is 4000.
Example 3
Polyisobutene succinimide, fume colloidal silica are added in methyl-silicone oil, ultrasound shake in supersonic wave cleaning machine is placed in
40min is swung, then is placed under 150 DEG C of oil baths and 5h is stirred to react with 600r/min revolving speed, it is sub- to obtain polyisobutene succinyl for room temperature cooling
Amine modified silicon cream；Polyisobutene succinimide modified silicon cream is added in containing hydrogen silicone oil, is stirred under room temperature with 400r/min revolving speed
2h is mixed, compound silicone oil is obtained；Alkyl phenol polyoxyethylene ether, compound silicone oil are added to absolute ethanol, be placed under 45 DEG C of water-baths with
800r/min revolving speed stirs 1h, obtains mixed liquor；Polyvinyl alcohol is added in deionized water, to be stirred under 100r/min revolving speed under room temperature
5min is mixed, poly-vinyl alcohol solution is obtained；Polyvinyl alcohol water solution is added in mixed liquor, with 1600r/min revolving speed high speed under room temperature
30min is stirred, then is placed under high-shear emulsion machine and shears 30min, obtains modified organic silicon defoaming agent.Polyisobutene succinyl is sub-
Amine, methyl-silicone oil, fume colloidal silica, containing hydrogen silicone oil, alkyl phenol polyoxyethylene ether, polyvinyl alcohol, dehydrated alcohol, deionized water
Parts by weight be 10 parts of polyisobutene succinimides, 100 parts of methyl-silicone oils, 5 parts of fume colloidal silicas, 50 parts of containing hydrogen silicone oils, 5
Part alkyl phenol polyoxyethylene ether, 20 parts of polyvinyl alcohol, 60 parts of dehydrated alcohols, 80 parts of deionized waters.Fume colloidal silica is averaged
Partial size is 50nm.The specific preparation step of polyisobutene succinimide are as follows: the dilute amine of second is added in toluene, under room temperature with
300r/min revolving speed stirs 15min, obtains vinylamine toluene solution；Vinylamine toluene solution is added in polyisobutylene succinic anhydride
In, it is passed through protection nitrogen, the isothermal reaction 6h at 120 DEG C, vacuum distillation obtains polyisobutene succinimide.Vinylamine, first
Benzene, polyisobutylene succinic anhydride parts by weight be 20 parts of vinylamines, 60 parts of toluene, 30 parts of polyisobutylene succinic anhydrides.Nitrogen
Air velocity is 30mL/min.The specific preparation step of polyisobutylene succinic anhydride are as follows: by benzyl alcohol, the poly- isobutyl of high activity it is dilute plus
Enter in maleic anhydride, be passed through protection nitrogen, is placed in 30 DEG C of water-baths and 30min is stirred with 100r/min revolving speed, obtain mixed solution；It will
Mixed solution is warming up to 190 DEG C and isothermal reaction 12h, obtains reaction solution, reaction solution is filtered, take filtrate, is evaporated under reduced pressure, must gather different
Butylene succinic anhydride.High-activity polyisobutene, benzyl alcohol, maleic anhydride parts by weight be 20 parts of high-activity polyisobutenes, 20 parts
Benzyl alcohol, 50 parts of maleic anhydrides.The air velocity of nitrogen is 30mL/min.The dilute molecular weight of the poly- isobutyl of high activity is 5000.
Reference examples: the defoaming agent of Zhejiang company production.
The defoaming agent of example and reference examples is detected, specific detection is as follows:
The measurement of particle diameter distribution: the test of laser particle size analyzer is scattered by force according to the light of the different angle of measurement particle swarm,
To obtain corresponding scattering spectra, sample particle average grain diameter and grain finally are obtained to the processing analysis of scattering spectra through computer
Degree distribution.
Viscosity test: emulsion viscosity is measured using rotary process.The principle of rotary process test is: when the object being dipped in fluid
When body and fluid itself either or both of which rotate movement, viscosity of fluid torque will have resistance to the movement of object
Hinder effect, and then change torque or the revolving speed of original object, it is possible to act on the glutinous of object by measuring fluid to be measured
The revolving speed of property torque size or object in a fluid, to obtain the viscosity of the fluid.
Defoaming/suds suppressing properties test: entire defoaming/suds suppressing properties test is the simulated experiment of Roche defoaming experiment.
Specific testing result such as table 1.
1 performance characterization contrast table of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Viscosity/mPas | 3173 | 3043 | 2961 | 2769 |
| Volume average particle size/um | 6.48 | 9.26 | 9.57 | 14.75 |
| Foam time/s | 5 | 10 | 11 | 48 |
| Foam inhibition ability/mL | 185 | 163 | 170 | 103 |
As shown in Table 1, defoaming agent prepared by the present invention has good storage stability and good defoaming suds suppressing properties.
Claims (10)
1. a kind of preparation method of modified organic silicon defoaming agent, which is characterized in that specific preparation step are as follows:
(1) polyisobutene succinimide, fume colloidal silica are added in methyl-silicone oil, are placed in supersonic wave cleaning machine ultrasonic
30~40min is shaken, then is placed under 140~150 DEG C of oil baths and 4~5h is stirred to react with 400~600r/min revolving speed, room temperature is cold
But, polyisobutene succinimide modified silicon cream is obtained；
(2) polyisobutene succinimide modified silicon cream is added in containing hydrogen silicone oil, is stirred under room temperature with 300~400r/min revolving speed
1~2h is mixed, compound silicone oil is obtained；
(3) alkyl phenol polyoxyethylene ether, compound silicone oil are added to absolute ethanol, be placed under 40~45 DEG C of water-baths with 600~
800r/min revolving speed stirs 0.5~1h, obtains mixed liquor；
(4) polyvinyl alcohol is added in deionized water, to stir 3~5min under 100r/min revolving speed under room temperature, obtains polyvinyl alcohol
Solution；
(5) by polyvinyl alcohol water solution be added mixed liquor in, under room temperature with 1500~1600r/min revolving speed high-speed stirred 25~
30min, then it is placed in 20~30min of shearing under high-shear emulsion machine, obtain modified organic silicon defoaming agent.
2. a kind of preparation method of modified organic silicon defoaming agent according to claim 1, which is characterized in that described gathering is different
It is butylene succimide, methyl-silicone oil, fume colloidal silica, containing hydrogen silicone oil, alkyl phenol polyoxyethylene ether, polyvinyl alcohol, anhydrous
Ethyl alcohol, deionized water parts by weight be 5~10 parts of polyisobutene succinimides, 80~100 parts of methyl-silicone oils, 3~5 parts of gas phases
Method white carbon black, 40~50 parts of containing hydrogen silicone oils, 3~5 parts of alkyl phenol polyoxyethylene ether, 10~20 parts of polyvinyl alcohol, 40~60 parts of nothings
Water-ethanol, 60~80 parts of deionized waters.
3. a kind of preparation method of modified organic silicon defoaming agent according to claim 1, which is characterized in that step (1) institute
The average grain diameter for the fume colloidal silica stated is 30~50nm.
4. a kind of preparation method of modified organic silicon defoaming agent according to claim 1, which is characterized in that step (1) institute
The specific preparation step for the polyisobutene succinimide stated are as follows:
(1) the dilute amine of second is added in toluene, 10~15min is stirred with 200~300r/min revolving speed under room temperature, obtains ethylene carbaryl
Solution；
(2) polyisobutylene succinic anhydride is added in vinylamine toluene solution, is passed through protection nitrogen, the constant temperature at 100~120 DEG C
5~6h is reacted, vacuum distillation obtains polyisobutene succinimide.
5. a kind of preparation method of modified organic silicon defoaming agent according to claim 4, which is characterized in that the ethylene
Amine, toluene, polyisobutylene succinic anhydride parts by weight be 10~20 parts of vinylamines, 40~60 parts of toluene, 20~30 parts of poly- isobutyls
Allyl succinic anhydride.
6. a kind of preparation method of modified organic silicon defoaming agent according to claim 4, which is characterized in that step (2) institute
The air velocity for the nitrogen stated is 20~30mL/min.
7. a kind of preparation method of modified organic silicon defoaming agent according to claim 4, which is characterized in that step (2) institute
The specific preparation step for the polyisobutylene succinic anhydride stated are as follows:
(1) by benzyl alcohol, the dilute addition maleic anhydride of the poly- isobutyl of high activity, it is passed through protection nitrogen, is placed in 25~30 DEG C of water-baths
25~30min is stirred with 100r/min revolving speed, obtains mixed solution；
(2) mixed solution is warming up to 170~190 DEG C and 10~12h of isothermal reaction, obtains reaction solution, reaction solution is filtered, takes filter
Liquid, vacuum distillation, obtains polyisobutylene succinic anhydride.
8. a kind of preparation method of modified organic silicon defoaming agent according to claim 7, which is characterized in that the height is living
Property polyisobutene, benzyl alcohol, maleic anhydride parts by weight be 10~20 parts of high-activity polyisobutenes, 10~20 parts of benzyl alcohols, 40
~50 parts of maleic anhydrides.
9. a kind of preparation method of modified organic silicon defoaming agent according to claim 7, which is characterized in that step (1) institute
The air velocity for the nitrogen stated is 20~30mL/min.
10. a kind of preparation method of modified organic silicon defoaming agent according to claim 7, which is characterized in that step (1) institute
The dilute molecular weight of the poly- isobutyl of the high activity stated is 3000~5000.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3676042B2 (en) * | 1997-06-27 | 2005-07-27 | 信越化学工業株式会社 | Foam suppressant composition |
| US20100022422A1 (en) * | 2002-05-30 | 2010-01-28 | Gefei Wu | High temperature shear stable nanographite dispersion lubricants with enhanced thermal conductivity and method for making |
| CN104225965A (en) * | 2014-09-24 | 2014-12-24 | 湖北兴瑞化工有限公司 | Organosilicone defoamer and preparation method thereof |
| CN107126729A (en) * | 2017-06-22 | 2017-09-05 | 江苏赛欧信越消泡剂有限公司 | A kind of graphene oxide modified organic silicon defoamer and preparation method thereof |
| WO2018112662A1 (en) * | 2016-12-23 | 2018-06-28 | Trican Well Service Ltd. | Oil-based dust suppression composition and method of use |
| CN109499104A (en) * | 2018-11-16 | 2019-03-22 | 江苏科创石化有限公司 | A kind of coking defoaming agent |
-
2019
- 2019-05-20 CN CN201910416596.6A patent/CN110124359A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3676042B2 (en) * | 1997-06-27 | 2005-07-27 | 信越化学工業株式会社 | Foam suppressant composition |
| US20100022422A1 (en) * | 2002-05-30 | 2010-01-28 | Gefei Wu | High temperature shear stable nanographite dispersion lubricants with enhanced thermal conductivity and method for making |
| CN104225965A (en) * | 2014-09-24 | 2014-12-24 | 湖北兴瑞化工有限公司 | Organosilicone defoamer and preparation method thereof |
| WO2018112662A1 (en) * | 2016-12-23 | 2018-06-28 | Trican Well Service Ltd. | Oil-based dust suppression composition and method of use |
| CN107126729A (en) * | 2017-06-22 | 2017-09-05 | 江苏赛欧信越消泡剂有限公司 | A kind of graphene oxide modified organic silicon defoamer and preparation method thereof |
| CN109499104A (en) * | 2018-11-16 | 2019-03-22 | 江苏科创石化有限公司 | A kind of coking defoaming agent |
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