CN106345146A - Defoaming agent for strong-basic metal degreasing agents and preparation method of defoaming agent - Google Patents
Defoaming agent for strong-basic metal degreasing agents and preparation method of defoaming agent Download PDFInfo
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- CN106345146A CN106345146A CN201610742604.2A CN201610742604A CN106345146A CN 106345146 A CN106345146 A CN 106345146A CN 201610742604 A CN201610742604 A CN 201610742604A CN 106345146 A CN106345146 A CN 106345146A
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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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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/06—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using emulsions
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Abstract
The invention relates to a defoaming agent suitable for degreasing agents, in particular to a defoaming agent for strong-basic metal degreasing agents and a preparation method of the defoaming agent. The defoaming agent is composed of, by weight, 5-30 parts of an organic silicon composition A, 10-30 parts of polyether modified polyethylene organic siloxane B, 2-10 parts of an emulsifying agent C, 0.01-0.1 part of a coupling agent D, 2-10 parts of a thickening agent E and 30-60 parts of water; the coupling agent D is selected from vinyl trimethoxy silane, vinyltriethoxysilane, methyltrimethoxysilane, methyl triethoxysilane, amino trimethoxy silane or amino triethoxy silane. During preparation, alkoxy silane is added, a protective layer is formed on surfaces of emulsion particles through hydrolytic condensation function of the alkoxy silane, and emulsion stability is improved; the prepared defoaming agent emulsion products can be used in the degreasing agents with a strong-basic system in the metal cleaning industry, stability of the defoaming agent in the strong-basic system is improved, and foam-depressing property is improved.
Description
Technical field
The present invention relates to a kind of defoamer being applied to degreasing agent, it is specifically related to one kind and is used for strong basicity metal degreasing agent
Defoamer and preparation method thereof.
Background technology
Defoamer, also referred to as anti-foam agent, are to reduce surface tension in process, suppression foam produces or eliminates and produces
Foam.China is permitted spendable defoamer the fatty acid ester compounded thing of organosilicon emulsion-type, higher alcohols, polyoxyethylene polyoxypropylene
Tetramethylolmethane ether, polyoxyethylene polyoxy propanol amidogen ether, polypropylene glycerol aether and polyoxyethylene polyoxypropylene glycerin ether, poly- diformazan
Radical siloxane etc..Organosilicon emulsion-type defoamer is very fast due to froth breaking, is widely used in industrialized production, but, due to breast
Liquid is a meta system, the phenomenons such as breakdown of emulsion, layering often occurs, have a strong impact on product matter during transport and use
How amount, therefore improve the stability of emulsion of defoamer, all the time, is all that defoamer preparation manufacturer technology to be solved is difficult
Topic.
Cn101003008b provides a kind of method improving stability of emulsion, mainly by containing to being used as emulsifying agent
The pfpe molecule having hydroxyl is modified, and using the emulsifying agent with closed-end structure, high fatty alcohol, higher fatty acids is carried out
Emulsion, the emulsion obtaining has heat resistance and anti-shear performance.But and undeclared this modified emulsifying agent is to organosilicon
The effectiveness of class defoamer.Ep0341952 is by polysiloxane and Siloxane-Oxyalkylene Copolymers compounding use, carries further
The antifoaming performance of high emulsion.But still the easy chain rupture of siloxanes in strong acid alkali systems can not be solved the problems, such as, in highly basic body
Poor for applicability in system.Patent cn103074784 provides a kind of method using starch as stabilizer and improves emulsion resistance to acids and bases
Can, but due to stabilizing agent dosage larger so that antifoaming performance be deteriorated.Cn103603215a provides a kind of acidproof alkali systems
Organic silicon defoamer preparation method, mainly compare hydrophilic, oleophilic emulsifier addition sequence to stability of emulsion and
The impact of resistance to acids and bases, after by oleophilic emulsifier and silicon composition elder generation mixing and stirring, adds hydrophilic emulsifying
Agent can improve stability of emulsion and resistance to acids and bases, but this technique can not fundamentally effectively solving resistance to acids and bases
Problem, stability improves limited.Us005773407a is after froth breaking agent emulsion prepares, add alkylalkoxy silane and
Catalyst reaction, formed a kind of to defoamer emulsion particle protective layer, improve stability, especially improve the phase in liquid detergent
Capacitive.
In metal pre-treatment industry, generally degreasing degreasing is carried out to metal material using alkaline degreasing agent, to meet
Follow-up coating specification, but most of producers are all to complete degreasing degreasing in the way of soaking or spraying at present, here it is
Lead to substantial amounts of foam to produce, had a strong impact on the quality of production and production environment, brought to follow-up application and have a strong impact on.Non- at present
Silicon class defoamer is poor in strong basicity degreasing agent antifoam performance, and silicone defoamer disappears suds effect preferably, but due to
The meta system of emulsion, under strong basicity environment, often breakdown of emulsion inactivates, and froth breaking persistency is decreased obviously, and therefore one kind is strong
Can remain stable under alkaline environment, the superior anti-foam product of suds suppressing properties is to need jointly to solve in current industry
A difficult problem.
Content of the invention
For above deficiency, it is an object of the invention to provide a kind of defoamer for strong basicity metal degreasing agent and
Its preparation method, this defoamer is remarkably improved emulsion intercalation method so as to have in the extreme conditions such as highly basic preferably
Stability, improves the persistency of defoamer.
For achieving the above object, present invention employs technical scheme below:
A kind of defoamer for strong basicity metal degreasing agent, according to weight portion meter, is made up of following raw materials:
5～30 parts of silicon composition a, 10～30 parts of polyether-modified polysiloxane b, 2～10 parts of emulsifying
Agent c, 0.01～0.1 part of coupling agent d, 2～10 parts of thickening agent e, 30～60 parts of water；Coupling agent d is selected from vinyl front three
TMOS, VTES, MTMS, MTES, amino trimethoxy silicon
Alkane or amino triethoxysilane；
Described polyether-modified polysiloxane b is to be obtained by containing hydrogen silicone oil and unsaturated polyether reaction, preparation process
Middle selection chloroplatinic acid is 80～200 DEG C as catalyst, reaction temperature.The structural formula of described polyether-modified polysiloxane b
For:
mda(meysio)bm
Wherein, m is chain link r3sio1/2, d is chain link r2sio2/2, r is identical or different, selected from hydrogen atom, the replacement of monovalence or
Non-substituted carbon number is 1～20 alkyl；Me is methyl；The structural formula of y is :-(ch2)zo(eo)g(po)hK, k are end-blocking
Group, selected from hydrogen atom, methyl, ethyl, propyl group, butyl；Subscript a, b, z, g, h are the degree of polymerization, and a is 10～500 integer, b
Integer for 1～50, z is 2～6 integer, and g is 1～36 integer, and h is 0～20 integer.The present invention is 10 from hlb value
～20 Siloxane-Oxyalkylene Copolymers, its dynamic viscosity when 25 DEG C is 200～2000mpa s.
Described emulsifying agent c is nonionic surfactant or anion surfactant, mainly has alkylphenol-polyethenoxy
Ether (includes NPE, OPEO, dodecyl phenol polyethenoxy ether and binonylphenol polyoxy second
Alkene ether), aliphatic acid polyethenoxy ether (include lauric acid polyoxyethylene ether, oleic acid polyoxyethylene, Palmic acid polyoxyethylene ether,
Stearic acid polyoxyethylene ether), fatty alcohol-polyoxyethylene ether, Sorbitan alcohol ether stearate polyoxyethylene ether, Oleum Ricini polyoxy
Vinyl Ether.
Described thickening agent e is selected from polyacrylamide, Carbomer, HANSHENGJIAO, cellulose or polyacrylic acid.
Described silicon composition a adopts polysiloxane a (1) and a (2), silicon dioxide a (3), organic siliconresin a
(4) prepare with catalyst a (5)；
A (1) polysiloxane:
At least one general structure is rasio4-a/2Polysiloxane:
Wherein the value of a is 1.9～2.2, and substituent group r in molecular structure is identical or different, and including hydrogen atom, carbon is former
Subnumber is 1～20 alkyl, preferably methyl.The polysiloxane a (1) that the present invention adopts is the poly- of trimethylsiloxy group end-blocking
Dimethyl siloxane, the dynamic viscosity when 25 DEG C for this polysiloxane is 1000～300000mpa.s；A (1) gathers organic
Siloxanes occupies 10～60 parts in silicon composition a.
A (2) polysiloxane:
It is r that at least one has general structure2 b(r1o)csio(4-b-c)/2Polysiloxane:
Wherein b is 0,1,2 or 3, c to be 1,2 or 3, b+c≤3, all of r in molecular structure1Identical or different, r2Identical
Or different, r1And r2Value consistent with the r that a (1) plants.The polysiloxane a (2) that the present invention adopts is hydroxy-end capped gathering
Dimethyl siloxane, the dynamic viscosity when 25 DEG C for this polysiloxane is 1000～200000mpa.s；A (2) gathers organic
Siloxanes occupies 40～90 parts in silicon composition a.
A (3) silicon dioxide
Described silicon dioxide includes aerosil or precipitated silica, and specific surface area is 50～500m2/ g, can
With process or without silicic acid anhydride.The preferred specific surface area of the present invention is 90～300m2The precipitated silica of/g or gas
Aerosil.A (3) silicon dioxide occupies 5 parts in silicon composition a.
A (4) organic siliconresin
Described organic siliconresin refers to the polysiloxane of highly cross-linked space net structure, this cancellated
Polysiloxane typically by methyl trichlorosilane, dimethyldichlorosilane, phenyl trichlorosilane, diphenyl dichlorosilane or
The various mixture of dichloromethyl phenylsilane hydrolyze in organic solvent such as toluene, obtain acidic hydrolysises thing, then through washing
Remove acid, obtain product.The organic siliconresin that the present invention uses is by chain link ch3sio1/2(in organosilicon chemistry, being referred to as m unit)
With chain link sio4/2The mq resin of the unit composition of (q unit), mol ratio therebetween is (0.4～1.2): 1.0, preferably
(0.5～0.8): 1.0.A (4) organic siliconresin occupies 10 parts in silicon composition a.
A (5) catalyst
Described catalyst is used to accelerate reaction between coupling agent and polysiloxane.Including alkali metal hydroxide
Thing, alkali metal silane alkoxide, alkali metal alkoxide, the hydroxide of quaternary ammonium salt, refer specifically to sodium hydroxide, potassium hydroxide,
Cesium hydrate., methyl silanol potassium, methyl silicon sodium alcoholate, Feldalat NM, Sodium ethylate, Feldalat KM, potassium ethoxide, beta-hydroxyethyl trimethyl ammonium,
Tetramethylammonium hydroxide etc., preferably potassium hydroxide.A (5) catalyst occupies 0.1～5 part in silicon composition a.
The preparation method of described silicon composition a is: by polysiloxane a (1), a (2) and organic siliconresin a (4)
In stirrer for mixing, it is warming up to 40～140 DEG C, adds catalyst a (5), polyreaction occurs；When mixing reaches certain viscosity
Add the silicon dioxide a (3) as water repellent agent afterwards, react 1～7h at 60～140 DEG C, be then further warming up to
160～230 DEG C, react 1～4h；After completion of the reaction, maintain 0.1～0.5h under -0.01～-0.08mpa vacuum, finally cold
But arrive room temperature, obtain silicon composition a.
As a kind of technical scheme, for the preparation method of the defoamer of strong basicity metal degreasing agent, step is as follows:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 50～
80 DEG C, stir 0.5～1.5h, speed of agitator is 100～400rpm；
(2), keeping temperature is constant, while stirring add 30～60% water, 70～90% thickening agent e, adjust ph to
6.5～7.0；
(3), above-mentioned emulsion is passed through colloid mill, be subsequently adding coupling agent d, 50～80 DEG C are stirred 10～30 minutes；It is coupled
Agent d is selected from vinyltrimethoxy silane or VTES；
(4) use thickening agent e and the water dilution of surpluses, obtain defoamer；
As another kind of technical scheme, for the preparation method of the defoamer of strong basicity metal degreasing agent, step is as follows:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 50～
80 DEG C, stir 0.5～1.5h, speed of agitator is 100～400rpm；
(2), keeping temperature is constant, adds 30～60% water, 70～90% thickening agent e and coupling agent while stirring
D, adjusts ph to 6.5～7.0；Coupling agent d is selected from MTMS, MTES, amino trimethoxy
Silane or amino triethoxysilane；
(3), above-mentioned emulsion is homogenized by colloid mill, and the thickening agent e with surpluses and water dilution are disappeared
Infusion.
The present invention adds alkoxy silane in emulsion process, by the hydrolytic condensation effect of alkoxy silane, in latex
Grain periphery forms layer protective layer, improves stability of emulsion.There are hydrolysis in alkoxy silane, the hydroxyl after hydrolysis can be
The periphery of silicon composition is condensed into network structure, can form hydrogen bond with the hydroxyl in silicon composition simultaneously, play
The effect of protection silicon composition, thus significantly improve emulsion intercalation method so as to have relatively in the extreme conditions such as highly basic
Good stability, improves the persistency of defoamer, should not separate out simultaneously.Can be used for, in metal cleaning industry, there is alkali system
Degreasing agent in, can keep preferable defoaming and suds, improve stability in alkali system for the defoamer, be conducive to
Clean manufacturing and energy saving.
This method improving silicone stability of emulsion, can be not limited to froth breaking agent emulsion, to all of organosilicon
Emulsion is suitable for (including defoamer, softening agent, releasing agent etc.).
Specific embodiment
Below with reference to embodiment, the present invention is described in detail.But, embodiment content is only to this
Bright example and explanation, affiliated those skilled in the art do various repairing to described specific embodiment
Change or supplement or using similar mode substitute, without departing from invention design or surmount defined in the claims
Scope, all should belong to protection scope of the present invention.
The preparation of silicon composition a:
By polysiloxane a (1), a (2) and organic siliconresin a (4) in stirrer for mixing, it is warming up to 100 DEG C, plus
Enter catalyst a (5), polyreaction occurs；The silicon dioxide a as water repellent agent is added after mixing reaches certain viscosity
(3), at 80 DEG C, react 5h, be then further warming up to 200 DEG C, react 2h；After completion of the reaction, in -0.01mpa vacuum
Lower maintenance 0.3h, is finally cooled to room temperature, obtains silicon composition a.
Wherein: a (1) polysiloxane:
Polysiloxane a (1) is the polydimethylsiloxane of trimethylsiloxy group end-blocking, and this polysiloxane is 25
DEG C when dynamic viscosity be 1000～300000mpa.s；A (1) polysiloxane occupies 20 parts in silicon composition a.
A (2) polysiloxane:
Polysiloxane a (2) is hydroxy-end capped polydimethylsiloxane, and this polysiloxane is dynamic when 25 DEG C
Mechanics viscosity is 1000～200000mpa.s；A (2) polysiloxane occupies 50 parts in silicon composition a.
A (3) silicon dioxide
Silicon dioxide specific surface area is 200m2The precipitated silica of/g.A (3) silicon dioxide accounts in silicon composition a
There are 5 parts.
A (4) organic siliconresin
Organic siliconresin is by chain link ch3sio1/2(m unit) and chain link sio4/2The mq tree of the unit composition of (q unit)
Fat, mol ratio therebetween is 0.8:1.0.A (4) organic siliconresin occupies 10 parts in silicon composition a.
A (5) catalyst
Catalyst is potassium hydroxide.A (5) catalyst occupies 0.8 part in silicon composition a.
The preparation of polyether-modified polysiloxane b:
Polyether-modified polysiloxane b is to be obtained by containing hydrogen silicone oil and unsaturated polyether reaction, selects in preparation process
With chloroplatinic acid as catalyst, reaction temperature is 120 DEG C.The structural formula of described polyether-modified polysiloxane b is:
mda(meysio)bm
Wherein, m is chain link r3sio1/2, d is chain link r2sio2/2, r identical selected from hydrogen atom；Me is methyl；The structural formula of y
For :-(ch2)zo(eo)g(po)hK, k are end-capping group, selected from hydrogen atom；Subscript a, b, z, g, h are the degree of polymerization, and a for 50, b is
25, z be 4, g be 20, h be 5.
Embodiment 1
For the defoamer of strong basicity metal degreasing agent, according to weight portion meter, it is made up of following raw materials:
5 parts of silicon composition a, 30 parts of polyether-modified polysiloxane b, 2 parts emulsifying agent c (nonyl phenol gather
Oxygen vinyl Ether), 0.1 part of coupling agent d (MTMS), 2 parts of thickening agent e (polyacrylic acid), 60 parts of water.
Preparation method is:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 50
DEG C, stir 1.5h, speed of agitator is 100rpm；
(2), keeping temperature is constant, adds 60% water, 70% thickening agent e and coupling agent d while stirring, adjusts ph
To 7.0；
(3), above-mentioned emulsion is homogenized by colloid mill, and the thickening agent e with surpluses and water dilution are disappeared
Infusion.
Embodiment 2
For the defoamer of strong basicity metal degreasing agent, according to weight portion meter, it is made up of following raw materials:
30 parts of silicon composition a, 10 parts of polyether-modified polysiloxane b, 10 parts of emulsifying agent c (Palmic acid
Polyoxyethylene ether), 0.01 part of coupling agent d (MTES), 10 parts of thickening agent e (Carbomer), 30 parts of water.
Preparation method is:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 80
DEG C, stir 0.5h, speed of agitator is 400rpm；
(2), keeping temperature is constant, adds 30% water, 90% thickening agent e and coupling agent d while stirring, adjusts ph
To 6.5；
(3), above-mentioned emulsion is homogenized by colloid mill, and the thickening agent e with surpluses and water dilution are disappeared
Infusion.
Embodiment 3
For the defoamer of strong basicity metal degreasing agent, according to weight portion meter, it is made up of following raw materials:
25 parts of silicon composition a, 20 parts of polyether-modified polysiloxane b, 5 parts of emulsifying agent c (Sorbitan
Alcohol ether stearate polyoxyethylene ether), 0.05 part of coupling agent d (amino trimethoxy silane), 5 parts of thickening agent e (polypropylene
Amide), 45 parts of water.
Preparation method is:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 65
DEG C, stir 1h, speed of agitator is 250rpm；
(2), keeping temperature is constant, adds 45% water, 80% thickening agent e and coupling agent d while stirring, adjusts ph
To 6.8；
(3), above-mentioned emulsion is homogenized by colloid mill, and the thickening agent e with surpluses and water dilution are disappeared
Infusion.
Embodiment 4
For the defoamer of strong basicity metal degreasing agent, according to weight portion meter, it is made up of following raw materials:
5 parts of silicon composition a, 30 parts of polyether-modified polysiloxane b, 2 parts emulsifying agent c (nonyl phenol gather
Oxygen vinyl Ether), 0.1 part of coupling agent d (vinyltrimethoxy silane), 2 parts of thickening agent e (polyacrylic acid), 60 parts of water.
Preparation method is:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 80
DEG C, stir 0.5h, speed of agitator is 400rpm；
(2), keeping temperature is constant, adds 30% water, 90% thickening agent e while stirring, adjusts ph to 6.5；
(3), above-mentioned emulsion is passed through colloid mill, be subsequently adding coupling agent d, 80 DEG C are stirred 10 minutes；
(4) use thickening agent e and the water dilution of surpluses, obtain defoamer.
Embodiment 5
For the defoamer of strong basicity metal degreasing agent, according to weight portion meter, it is made up of following raw materials:
30 parts of silicon composition a, 10 parts of polyether-modified polysiloxane b, 10 parts of emulsifying agent c (Palmic acid
Polyoxyethylene ether), 0.01 part of coupling agent d (VTES), 10 parts of thickening agent e (Carbomer), 30 parts
Water.
Preparation method is:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 50
DEG C, stir 1.5h, speed of agitator is 100rpm；
(2), keeping temperature is constant, adds 60% water, 70% thickening agent e while stirring, adjusts ph to 7.0；
(3), above-mentioned emulsion is passed through colloid mill, be subsequently adding coupling agent d, 50 DEG C are stirred 30 minutes；
(4) use thickening agent e and the water dilution of surpluses, obtain defoamer.
Embodiment 6
For the defoamer of strong basicity metal degreasing agent, according to weight portion meter, it is made up of following raw materials:
25 parts of silicon composition a, 20 parts of polyether-modified polysiloxane b, 5 parts of emulsifying agent c (Sorbitan
Alcohol ether stearate polyoxyethylene ether), 0.05 part of coupling agent d (VTES), 5 parts of thickening agent e (poly- third
Acrylamide), 45 parts of water.
Preparation method is:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 65
DEG C, stir 1h, speed of agitator is 250rpm；
(2), keeping temperature is constant, adds 45% water, 80% thickening agent e while stirring, adjusts ph to 6.8；
(3), above-mentioned emulsion is passed through colloid mill, be subsequently adding coupling agent d, 70 DEG C are stirred 20 minutes；
(4) use thickening agent e and the water dilution of surpluses, obtain defoamer.
Comparative example 1
Differ only in without coupling agent d and embodiment 1 between, other components and preparation method are identical.
Comparative example 2
Differ only in without coupling agent d and embodiment 2 between, other components and preparation method are identical.
Comparative example 3
Differ only in without coupling agent d and embodiment 3 between, other components and preparation method are identical.
Comparative example 4
Differ only in without coupling agent d and embodiment 4 between, other components and preparation method are identical.
Comparative example 5
Differ only in without coupling agent d and embodiment 5 between, other components and preparation method are identical.
Comparative example 6
Differ only in without coupling agent d and embodiment 6 between, other components and preparation method are identical.
Correlated performance below by way of experiment test defoamer:
1st, dewatering ability
Measure 8ml sample in 10ml centrifuge tube, put in centrifuge, continuously rotated with the speed of 3000r/min
15min, take out test tube, visual detection its whether be layered, testing result is as shown in the table:
| Embodiment | Testing result | Embodiment | Testing result |
| Embodiment 1 | Not stratified | Comparative example 1 | Layering |
| Embodiment 2 | Not stratified | Comparative example 2 | Layering |
| Embodiment 3 | Not stratified | Comparative example 3 | Layering |
| Embodiment 4 | Not stratified | Comparative example 4 | Layering |
| Embodiment 5 | Not stratified | Comparative example 5 | Layering |
| Embodiment 6 | Not stratified | Comparative example 6 | Layering |
2nd, alkali resistance test
Add the naoh aqueous solution of the ph=13 of 200ml in 250ml beaker, the defoamer adding 4ml (with concentration is
2% Polyacrylate thickeners aqueous solution 1:19 dilution), it is positioned over and slowly heat up on electric furnace, when just floccule in liquid level,
Write down the temperature in now beaker, be the Precipitation Temperature of this defoamer.Continue to be cooled to room temperature after 5min is boiled in intensification, seeing
Examine liquid level state, test result is as shown in the table:
Note: "+" indicate precipitation, "+" represent separate out more serious.
3rd, antifoaming performance test
Key instrument device: Portable circulation bubbling instrument
Test condition: 40 DEG C of temperature, flow 9l/min, defoamer addition: 5ul
Tested media: strong basicity degreasing agent working solution
Concrete method of testing: Portable circulation bubbling instrument is cleaned up, adds the frothing media of ormal weight, be heated to setting
Constant temperature degree, turn-on flow rate pump, under setting flow, circulation bubbling is 300ml to foam volume, is subsequently adding the froth breaking of ormal weight
Agent sample, (in same time, foam height is lower, and antifoaming performance is got over for record foam volume v Changing Pattern over time
Good), test result is as shown in the table:
Defoamer using method of the present invention preparation be can be seen that by above-mentioned performance test, in strong acid alkali systems
Precipitation situation is few, and alkaline-resisting and dewatering ability, apparently higher than comparative example, maintains good antifoaming performance simultaneously.
Claims (6)
1. a kind of defoamer by strong basicity metal degreasing agent is it is characterised in that based on according to weight portion, be made up of following raw materials:
5～30 parts of silicon composition a, 10～30 parts of polyether-modified polysiloxane b, 2～10 parts of emulsifying agent c,
0.01～0.1 part of coupling agent d, 2～10 parts of thickening agent e, 30～60 parts of water；Coupling agent d is selected from vinyl trimethoxy
Silane, VTES, MTMS, MTES, amino trimethoxy silane or
Amino triethoxysilane.
2. be used for as claimed in claim 1 the defoamer of strong basicity metal degreasing agent it is characterised in that: described polyether-modified poly-
The structural formula of organosiloxane b is:
mda(meysio)bm
Wherein, m is chain link r3sio1/2, d is chain link r2sio2/2, r is identical or different, selected from hydrogen atom, the replacement of monovalence or non-take
The carbon number in generation is 1～20 alkyl；Me is methyl；The structural formula of y is :-(ch2)zo(eo)g(po)hK, k are END CAPPED GROUP
Group, selected from hydrogen atom, methyl, ethyl, propyl group, butyl；Subscript a, b, z, g, h are the degree of polymerization, and a is 10～500 integer, and b is 1
～50 integer, z is 2～6 integer, and g is 1～36 integer, and h is 0～20 integer.
3. be used for as claimed in claim 1 the defoamer of strong basicity metal degreasing agent it is characterised in that: described emulsifying agent c is
NPE, OPEO, dodecyl phenol polyethenoxy ether and Dinonylphenol Polyoxyethylene Ether, the moon
Cinnamic acid polyoxyethylene ether, oleic acid polyoxyethylene, Palmic acid polyoxyethylene ether, stearic acid polyoxyethylene ether, fatty alcohol polyoxy second
Alkene ether, Sorbitan alcohol ether stearate polyoxyethylene ether or castor oil polyoxyethylene ether.
4. be used for as claimed in claim 1 the defoamer of strong basicity metal degreasing agent it is characterised in that: described thickening agent e choosing
From polyacrylamide, Carbomer, HANSHENGJIAO, cellulose or polyacrylic acid.
5. a kind of prepare the method being used for as claimed in claim 1 the defoamer of strong basicity metal degreasing agent it is characterised in that
Step is as follows:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 50～80
DEG C, stir 0.5～1.5h, speed of agitator is 100～400rpm；
(2), keeping temperature is constant, while stirring the water of addition 30～60%, 70～90% thickening agent e, and regulation ph to 6.5～
7.0；
(3), above-mentioned emulsion is passed through colloid mill, be subsequently adding coupling agent d, 50～80 DEG C are stirred 10～30 minutes；Coupling agent d selects
From vinyltrimethoxy silane or VTES；
(4) use thickening agent e and the water dilution of surpluses, obtain defoamer.
6. a kind of prepare the method being used for as claimed in claim 1 the defoamer of strong basicity metal degreasing agent it is characterised in that
Step is as follows:
(1), silicon composition a, polyether-modified polysiloxane b and emulsifying agent c are mixed, then heat to 50～80
DEG C, stir 0.5～1.5h, speed of agitator is 100～400rpm；
(2), keeping temperature is constant, adds 30～60% water, 70～90% thickening agent e and coupling agent d while stirring, adjusts
Section ph to 6.5～7.0；Coupling agent d is selected from MTMS, MTES, amino trimethoxy silane
Or amino triethoxysilane；
(3), above-mentioned emulsion is homogenized by colloid mill, and the thickening agent e with surpluses and water dilution are obtained defoamer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112843797A (en) * | 2021-01-13 | 2021-05-28 | 安徽博纳新材料科技有限公司 | Preparation method of efficient water-based silicon polyether defoaming agent |
| CN114316610A (en) * | 2021-12-13 | 2022-04-12 | 南京瑞思化学技术有限公司 | Preparation method of organic silicon emulsion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5773407A (en) * | 1996-09-27 | 1998-06-30 | General Electric Company | Antiform delivery system |
| CN1919936A (en) * | 2006-08-31 | 2007-02-28 | 南京四新科技应用研究所有限公司 | Organosilicon defoaming agent for water-based system and preparation method thereof |
| CN102002242A (en) * | 2010-10-21 | 2011-04-06 | 南京四新科技应用研究所有限公司 | Organosilicon emulsion and preparation method thereof |
| CN101632908B (en) * | 2009-08-19 | 2011-07-20 | 南京四新科技应用研究所有限公司 | Method for preparing defoaming agent composition |
| CN103071319A (en) * | 2013-01-07 | 2013-05-01 | 辽宁工业大学 | Preparation method of polyether-modified organic silicon defoaming agent |
| CN103923323A (en) * | 2014-04-21 | 2014-07-16 | 西安三业精细化工有限责任公司 | Preparation method of terpolymer defoamer |
-
2016
- 2016-08-27 CN CN201610742604.2A patent/CN106345146A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5773407A (en) * | 1996-09-27 | 1998-06-30 | General Electric Company | Antiform delivery system |
| CN1919936A (en) * | 2006-08-31 | 2007-02-28 | 南京四新科技应用研究所有限公司 | Organosilicon defoaming agent for water-based system and preparation method thereof |
| CN101632908B (en) * | 2009-08-19 | 2011-07-20 | 南京四新科技应用研究所有限公司 | Method for preparing defoaming agent composition |
| CN102002242A (en) * | 2010-10-21 | 2011-04-06 | 南京四新科技应用研究所有限公司 | Organosilicon emulsion and preparation method thereof |
| CN103071319A (en) * | 2013-01-07 | 2013-05-01 | 辽宁工业大学 | Preparation method of polyether-modified organic silicon defoaming agent |
| CN103923323A (en) * | 2014-04-21 | 2014-07-16 | 西安三业精细化工有限责任公司 | Preparation method of terpolymer defoamer |
Non-Patent Citations (2)
| Title |
|---|
| 张招贵等: "《有机硅化合物化学》", 31 March 2010, 化学工业出版社 * |
| 黄文润等: "《硅油及二次加工品》", 31 January 2004, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112843797A (en) * | 2021-01-13 | 2021-05-28 | 安徽博纳新材料科技有限公司 | Preparation method of efficient water-based silicon polyether defoaming agent |
| CN114316610A (en) * | 2021-12-13 | 2022-04-12 | 南京瑞思化学技术有限公司 | Preparation method of organic silicon emulsion |
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