CN110318056A - A kind of water-base metal galvanic corrosion inhibitor and preparation method - Google Patents
A kind of water-base metal galvanic corrosion inhibitor and preparation method Download PDFInfo
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- CN110318056A CN110318056A CN201910440327.3A CN201910440327A CN110318056A CN 110318056 A CN110318056 A CN 110318056A CN 201910440327 A CN201910440327 A CN 201910440327A CN 110318056 A CN110318056 A CN 110318056A
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
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Abstract
The present invention provides a kind of water-base metal galvanic corrosion inhibitor and preparation methods, wherein, water-base metal galvanic corrosion inhibitor, each component including following parts by weight: 5-40 parts of carboxylic acid type antirust agent, 5-40 parts of phosphate corrosion inhibiter, 3-35 parts of organosilicon corrosion inhibiter, 10-50 parts of Alcohol amine type borate, 2-20 parts of methyl benzotriazazole, 0-20 parts of Tween80,5-20 parts of water.Water-base metal galvanic corrosion inhibitor of the present invention, it can be used as aqueous rust preventive exclusive use, also the formula that additive can be done for metal working fluid designs, dosage is few, with excellent antirust corrosion inhibition, the galvanic corrosion between different metal contact surface can be significantly inhibited, the brightness of metal surface is promoted, it is especially particularly evident to the galvanic corrosion inhibiting effect of titanium alloy and aluminium alloy.
Description
Technical field
The invention belongs to metal rust preventing protection technique field, more particularly, to a kind of water-base metal galvanic corrosion inhibitor and
The preparation method of its component Polyol Phosphate, the water-base metal galvanic corrosion inhibitor are particularly suitable for titanium alloy and aluminium alloy
Galvanic corrosion problem.
Background technique
Corrosion of metal is inevitable problem in its production and processing, transport, storage and use.Because of metal corrosion and
The loss being subjected to is surprising.Metal works degradation due to caused by corrosion, precision reduce, for special equipment
Make its can not normal use, security performance cannot ensure that serious person even scraps or occur safety accident.According to statistics, full generation
The metal that boundary is scrapped by corrosion every year reaches several ten million tons.
Corrosion of metal form mainly has chemical attack and galvanic corrosion, wherein chemical attack refers to metal and touches
Substance (oxygen, water, acid etc.) occur chemical reaction caused by corrode, its main feature is that metal is directly by electron transmission oxidizing
Agent is generated without electric current, and corrosion rate is slower, and corrosion product often hinders continuing for chemical attack.
When galvanic corrosion is referred to by dissimilar metal or alloy with electrolyte solution contacts, occur caused by electrochemical reaction
Corrosion.Galvanic corrosion is more likely formed than chemical attack, and corrosion rate is faster, is the main Types in practical corrosion process.
Titanium alloy and aluminium alloy are widely used in Aeronautics and Astronautics field, and proportion increasingly increases.In actual processing
In the process, phenomena such as titanium alloy, aluminium alloy are contacted with lathe, dissimilar metal stacks is generally existing, leads to that galvanic corrosion occurs, makes
Workpiece accuracy reduction, poor surface quality, strength character decline, seriously affect product qualification rate, further threaten Aeronautics and Astronautics
Field safety, influences huge.
Existing metal corrosion inhibitor mostly can preferably solve the problems, such as the chemical attack of metal and the galvanic corrosion of alloy,
But it produces little effect between the galvanic corrosion slowing down dissimilar metal.Therefore, research and develop galvanic corrosion inhibitor, in particular in
The galvanic corrosion inhibitor of titanium alloy and aluminium alloy, has a very important significance.
Summary of the invention
In view of this, the present invention is directed to propose a kind of water-base metal galvanic corrosion inhibitor, to overcome lacking for the prior art
It falls into, can be used as aqueous rust preventive exclusive use, the formula that can also do additive for metal working fluid designs, and dosage is few, has excellent
Antirust corrosion inhibition, the galvanic corrosion between different metal contact surface can be significantly inhibited, promote the brightness of metal surface, especially
It is particularly evident to the galvanic corrosion inhibiting effect of titanium alloy and aluminium alloy.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of water-base metal galvanic corrosion inhibitor, each component including following parts by weight: 5-40 parts of carboxylic acid type antirust agent,
5-40 parts of phosphate corrosion inhibiter, 3-35 parts of organosilicon corrosion inhibiter, 10-50 parts of Alcohol amine type borate, methyl benzotriazazole 2-20
Part, 0-20 parts of Tween80, water surplus.Wherein, the additional amount of water is so that the galvanic corrosion inhibitor maintains stable transparent shape
State simultaneously reaches with subject to good mobile performance, generally in 5-20 parts by weight.
Preferably, the carboxylic acid type antirust agent is at least one of dicarboxylic acids antirust agent and tricarboxylic acid antirust agent；
Preferably, the carboxylic acid type antirust agent is that sulfonic tricarboxylic acid antirust agent is had in molecular structure.Inventors have found that such
Polar group in antirust agent can securely be adsorbed on metal surface, form fine and close rust-preventing film.
Preferably, the phosphate corrosion inhibiter is the mixture of Polyol Phosphate, imidazoline phosphate ester；Further preferably
, the Polyol Phosphate, the mixing mass ratio of imidazoline phosphate ester are (1 ± 0.2): (2 ± 0.2).Inventors have found that more
First alcohol phosphate has strong sequestering power to metal ion in aqueous solution, can reduce number of charged particles, reduces solution and leads
Electrically；Miaow quinoline azoles phosphate is anodic corrosion inhibitor, can slow down the anodic-reaction conditions in galvanic corrosion, and the two compounding can effectively press down
Galvanic corrosion processed.
Preferably, the Polyol Phosphate is isomerous tridecanol ester, polyoxyethylene glycerol mixed ester and beta-hydroxyethyl second
The mixture of diamines ester；Preferably, the mixing of isomerous tridecanol ester, polyoxyethylene glycerol mixed ester and beta-hydroxyethyl ethylenediamine dinitrate
Mass ratio is (29 ± 2): (27 ± 2): (36 ± 2).
Preferably, the Polyol Phosphate by isomery carbon tridecylene alcohol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine and
Phosphorus pentoxide synthesis.
Preferably, the mass ratio of isomery carbon tridecylene alcohol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine and phosphorus pentoxide
For (29 ± 2): (27 ± 2): (36 ± 2): (8 ± 1).
Preferably, the organosilicon corrosion inhibiter is one or both of organosilan, organosiloxane, organosilazanes
More than.Inventors have found that such corrosion inhibiter film forming ability is strong, and there is excellent insulating properties at rust-preventing film, can effectively slow down
Galvanic corrosion between dissimilar metal.
Preferably, the Alcohol amine type borate is ethanol amine borate, in diethanol amine borate, triethanolamine borate
One or more；Preferably, the Alcohol amine type borate is triethanolamine borate.Inventor has found Alcohol amine type boric acid
Ester high rust resistance, in addition, highly polar group therein can play bridging effect with antirust agent, corrosion inhibiter used in the present invention,
High-intensitive netted rust-preventing film is formed, antirust, corrosion mitigating effect are increased.
Another object of the present invention is to propose a kind of system of Polyol Phosphate in water-base metal galvanic corrosion inhibitor
Preparation Method, to be used for the preparation of above-mentioned water-base metal galvanic corrosion inhibitor.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The preparation method of Polyol Phosphate in a kind of water-base metal galvanic corrosion inhibitor as described above, including it is following
Step:
(1) isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine mixing is even, obtain mixture A；
(2) mixture A is heated while agitating, and is slowly added to phosphorus pentoxide, temperature to be heated is 110 ± 5
DEG C when, continue stir 1-2h；
(3) step (2) continues mixture vacuum distillation of the stirring simultaneously to phosphorus pentoxide and mixture A, steams reaction
Water generated, until solid react completely and it is anhydrous steam after, stop react, products therefrom is Polyol Phosphate.
Preferably, reaction carries out in double-layer glass reaction kettle；Mixing speed is 200-600rad/min.
People's discovery is studied, the Polyol Phosphate through the method synthesis is isomerous tridecanol ester, polyoxyethylene glycerol mixing
The mixture of ester and beta-hydroxyethyl ethylenediamine dinitrate, system clear.Wherein, polyoxyethylene glycerol mixed ester is monoesters, double
The mixture of ester, three esters, the polyoxyethylene glycerol mixed ester using this method synthesis have extremely strong surface adsorption property, can have
Effect improves rust inhibition.
The equation that glycerin polyoxyethylene ether and phosphorus pentoxide reaction generate polyoxyethylene glycerol mixed ester is as follows:
Compared with the existing technology, a kind of water-base metal galvanic corrosion inhibitor of the present invention has the advantage that
A kind of water-base metal galvanic corrosion inhibitor of the present invention can be used as aqueous rust preventive exclusive use, can also do and add
Formula of the agent for metal working fluid is added to design, dosage is few, has excellent dissimilar metal antirust corrosion inhibition, can significantly inhibit
Galvanic corrosion between different metal contact surface promotes the brightness of metal surface, especially rotten to the galvanic couple of titanium alloy and aluminium alloy
It is particularly evident to lose inhibiting effect.
A kind of water-base metal galvanic corrosion inhibitor of the present invention, the methyl benzotriazazole of use can promote anode
The ionic dissociation current potential of metal, inhibits metal anodised reaction, slows down the galvanic corrosion between dissimilar metal.In addition, Tween 80
As emulsifier, help that the galvanic corrosion inhibitor is made to maintain stable transparent state.
The preparation method of Polyol Phosphate in a kind of water-base metal galvanic corrosion inhibitor of the present invention, operation letter
Single, raw material is easy to get, and the Polyol Phosphate through the method synthesis is isomerous tridecanol ester, polyoxyethylene glycerol mixed ester and β-
The mixture of hydroxyethyl ethylenediamine ester, wherein polyoxyethylene glycerol mixed ester has extremely strong surface adsorption property, can effectively mention
High rust inhibition, and isomerous tridecanol and beta-hydroxyethyl ethylenediamine dinitrate can be used as corrosion inhibitor, play collaboration polyoxyethylene glycerol
The effect of mixed ester raising corrosion inhibition.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention
The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent；It is described
Experimental method is unless otherwise specified conventional method.
Below with reference to embodiment, the present invention will be described in detail.
One, Polyol Phosphate synthetic method
(1) by isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine (29 ± 2) in mass ratio: (27 ± 2):
(36 ± 2): (8 ± 1) are added in double-layer glass reaction kettle, open stirring, mixing speed 200-600rad/min；
(2) setting reactor temperature is 110 ± 5 DEG C, opens and heats and be slowly added to phosphorus pentoxide in proportion；
(3) after temperature rises to 110 ± 5 DEG C, continue to stir 1-2h, open vacuum distillation apparatus in whipping process, steam
React water generated, until solid react completely and it is anhydrous steam after, stop react, products therefrom is polyalcohol phosphoric acid
Ester.
Wherein, the material proportion of each embodiment and comparative example and operating condition are as follows:
Embodiment 1, embodiment 5, comparative example 1-2: isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine matter
Amount is than being 30:28:37:8.5；Mixing speed is 400rad/min, and setting temperature of reaction kettle is 110 DEG C, continues to stir 1.5h.
Embodiment 2, comparative example 2-1: isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine mass ratio be 28:
28:35:7；Mixing speed is 300rad/min, and setting temperature of reaction kettle is 113 DEG C, continues to stir 1.2h.
Embodiment 3, comparative example 3-1: isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine mass ratio be 31:
29:38:9；Mixing speed is 500rad/min, and setting temperature of reaction kettle is 108 DEG C, continues to stir 1.8h.
Embodiment 4, comparative example 4-1: isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine mass ratio be 29:
27:36:8；Mixing speed is 450rad/min, and setting temperature of reaction kettle is 110 DEG C, continues to stir 2h.
It is all to be related in the embodiment and comparative example of Polyol Phosphate, isomerous tridecanol ester in Polyol Phosphate,
Isomery in the mixing mass ratio of polyoxyethylene glycerol mixed ester and beta-hydroxyethyl ethylenediamine dinitrate and its corresponding synthesis material
Tridecanol, glycerin polyoxyethylene ether, the mixing mass ratio of hydroxyethyl ethylenediamine are identical.
Two, galvanic corrosion inhibitor preparation method
1) carboxylate antirust agent, Alcohol amine type borate, methyl benzotriazazole, deionized water are placed in reaction kettle, are risen
To 70-80 DEG C, constant temperature is stirred to solid and is completely dissolved temperature, obtains supernatant liquid A；
2) be cooled to 40-60 DEG C, into A be added phosphate corrosion inhibiter, organosilicon corrosion inhibiter, Tween80, constant temperature stir to
System is uniformly clarified to arrive water-base metal galvanic corrosion inhibitor.
Three,Detection method
1) respectively by embodiment 1, embodiment 2, embodiment 3, embodiment 4 and comparative example 1-1, comparative example 1-2, comparative example 2-
1, comparative example 3-1, comparative example 4-1 are diluted to 2wt% with deionized water；
2) embodiment 5 and comparative example 5-1 are diluted to 5wt% with deionized water respectively；
3) galvanic couple formed with the test piece of TC4 titanium and grey cast-iron test piece, 7075 aluminium test pieces and grey cast-iron test piece is taken respectively
It is right, the dilution of each embodiment and comparative example is filled in contact surface respectively；
4) contact surface is coated with to the galvanic couple of embodiment and comparative example dilution to being placed in 55 DEG C of baking ovens for 24 hours；
5) each galvanic couple pair is taken out, observes contact surface corrosion condition, rust inhibition grade evaluation criterion is referring to national standard GB/T
6144-2010。
Four,Raw material selection
Tricarboxylic acid used is BASF L190 in the present embodiment and comparative example；Dicarboxylic acids is the auspicious gloomy chemical industry of Tianjin sky
CI-02；Imidazoline phosphate ester is Shanghai Rui Laibo chemical industry RP720；Alkyl phosphate is Shanghai chess into chemical industry P50；Fatty acid alkane
Alkylolamides phosphate is Shanghai Hong Ze chemical industry 3260；Organosiloxane is Akzo Nobel P15；Ethanol amine borate, diethyl
Hydramine borate, triethanolamine borate, methyl benzotriazazole, Tween80 are ordinary commercial products.
Five,Embodiment 1, comparative example 1-1, comparative example 1-2
Using above-mentioned preparation method, embodiment 1 and comparative example 1-1, comparative example 1-2 are prepared by table 1 respectively.
1 embodiment 1 of table, comparative example 1-1, comparative example 1-2 inhibitor composition
Embodiment 1 and comparative example 1-1, comparative example 1-2 galvanic corrosion inhibition are as shown in table 2, table 3.
2 embodiment 1 of table and comparative example 1-1, comparative example 1-2 titanium alloy galvanic corrosion inhibit situation
As can be seen from Table 2, select Polyol Phosphate and 1 titanium alloy galvanic couple of the embodiment of imidazoline phosphate ester preparation rotten
Inhibition is lost better than the comparative example 1-1 for selecting alkyl phosphate and imidazoline phosphate ester preparation and selects Polyol Phosphate and rouge
The comparative example 1-2 of fat acid alkanolamide phosphate preparation.
3 embodiment 1 of table and comparative example 1-1, comparative example 1-2 aluminium alloy electric thermogalvanic corrision inhibit situation
As can be seen from Table 2, select Polyol Phosphate and 1 aluminium alloy galvanic couple of the embodiment of imidazoline phosphate ester preparation rotten
Inhibition is lost better than the comparative example 1-1 for selecting alkyl phosphate and imidazoline phosphate ester preparation and selects Polyol Phosphate and rouge
The comparative example 1-2 of fat acid alkanolamide phosphate preparation.
Six,Embodiment 2, comparative example 2-1
Using above-mentioned preparation method, embodiment 2 and comparative example 2-1 are prepared by table 3 respectively.
4 embodiment 2 of table, comparative example 2-1 inhibitor composition
Embodiment 2 and comparative example 2-1 galvanic corrosion inhibition are as shown in table 5, table 6.
5 embodiment 2 of table and comparative example 2-1 titanium alloy galvanic corrosion inhibit situation
As can be seen from Table 5, the 2 aluminium alloy electric thermogalvanic corrision inhibition of embodiment of the corrosion inhibiter containing organosilicon is not better than containing organic
The comparative example 2-1 of silicon corrosion inhibiter.
6 embodiment 2 of table and comparative example 2-1 aluminium alloy electric thermogalvanic corrision inhibit situation
As can be seen from Table 6, the 2 aluminium alloy electric thermogalvanic corrision inhibition of embodiment of the corrosion inhibiter containing organosilicon is not better than containing organic
The comparative example 2-1 of silicon corrosion inhibiter.
Seven,Embodiment 3, comparative example 3-1
Using above-mentioned preparation method, embodiment 3 and comparative example 3-1 are prepared by table 7 respectively.
7 embodiment 3 of table, comparative example 3-1 inhibitor composition
Embodiment 3 and comparative example 3-1 galvanic corrosion inhibition are as shown in table 8, table 9.
8 embodiment 3 of table and comparative example 3-1 titanium alloy galvanic corrosion inhibit situation
As can be seen from Table 8, the 3 titanium alloy galvanic corrosion inhibition of embodiment of the borate containing Alcohol amine type is not better than containing hydramine
The comparative example 3-1 of type borate.
9 embodiment 3 of table and comparative example 3-1 aluminium alloy electric thermogalvanic corrision inhibit situation
As can be seen from Table 9, the 3 aluminium alloy electric thermogalvanic corrision inhibition of embodiment of the borate containing Alcohol amine type is not better than containing hydramine
The comparative example 3-1 of type borate.
Eight,Embodiment 4, comparative example 4-1
Using above-mentioned preparation method, embodiment 4 and comparative example 4-1 are prepared by table 10 respectively.
10 embodiment 4 of table, comparative example 4-1 inhibitor composition
Embodiment 4 and comparative example 4-1 galvanic corrosion inhibition are as shown in table 11, table 12.
11 embodiment 4 of table and comparative example 4-1 titanium alloy galvanic corrosion inhibit situation
As can be seen from Table 11, the 4 titanium alloy galvanic corrosion inhibition of embodiment containing methyl benzotriazazole is better than not containing
The comparative example 4-1 of methyl benzotriazazole.
12 embodiment 4 of table and comparative example 4-1 aluminium alloy electric thermogalvanic corrision inhibit situation
As can be seen from Table 12, the 4 aluminium alloy electric thermogalvanic corrision inhibition of embodiment containing methyl benzotriazazole is better than not containing
The comparative example 4-1 of methyl benzotriazazole.
Nine,Embodiment 5, comparative example 5-1
Comparative example 5-1: the high-end fully synthetic type aluminium alloy working fluid of certain import, specially Castrol Syntilo9913.
Comparative example 5-1 is added in embodiment 1, additional amount is 6 weight point, and constant temperature is stirred to system clear at 60 DEG C,
Obtain embodiment 5.
Embodiment 5 and comparative example 5-1 galvanic corrosion inhibition are as shown in table 13, table 14.
13 embodiment 5 of table and comparative example 5-1 titanium alloy galvanic corrosion inhibit situation
14 embodiment 5 of table and comparative example 5-1 aluminium alloy electric thermogalvanic corrision inhibit situation
By table 13, table 14 as it can be seen that compared to comparative example 5-1, embodiment 5 casts TC4 titanium/grey cast-iron, 7075 aluminium/ash mouth
Ferroelectricity couple has good galvanic corrosion inhibition, when illustrating the present invention to be added in metal working fluid, can significantly improve gold
Belong to the galvanic corrosion inhibition of working fluid, effectively contact surface is prevented to corrode.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, 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 water-base metal galvanic corrosion inhibitor, it is characterised in that: each component including following parts by weight: carboxylic acid type antirust
5-40 parts of agent, 5-40 parts of phosphate corrosion inhibiter, 3-35 parts of organosilicon corrosion inhibiter, 10-50 parts of Alcohol amine type borate, methyl benzo three
2-20 parts of nitrogen azoles, 0-20 parts of Tween80,5-20 parts of water.
2. water-base metal galvanic corrosion inhibitor according to claim 1, it is characterised in that: the carboxylic acid type antirust agent is
At least one of dicarboxylic acids antirust agent and tricarboxylic acid antirust agent；Preferably, the carboxylic acid type antirust agent is molecular structure
In have sulfonic tricarboxylic acid antirust agent.
3. water-base metal galvanic corrosion inhibitor according to claim 1, it is characterised in that: the phosphate corrosion inhibiter is
The mixture of Polyol Phosphate, imidazoline phosphate ester；Preferably, the mixing of the Polyol Phosphate, imidazoline phosphate ester
Mass ratio is (1 ± 0.2): (2 ± 0.2).
4. water-base metal galvanic corrosion inhibitor according to claim 3, it is characterised in that: the Polyol Phosphate is
The mixture of isomerous tridecanol ester, polyoxyethylene glycerol mixed ester and beta-hydroxyethyl ethylenediamine dinitrate；Preferably, isomerous tridecanol
The mixing mass ratio of ester, polyoxyethylene glycerol mixed ester and beta-hydroxyethyl ethylenediamine dinitrate is (29 ± 2): (27 ± 2): (36 ± 2).
5. water-base metal galvanic corrosion inhibitor according to claim 1 or 4, it is characterised in that: the polyalcohol phosphoric acid
Ester is synthesized by isomery carbon tridecylene alcohol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine and phosphorus pentoxide.
6. water-base metal galvanic corrosion inhibitor according to claim 5, it is characterised in that: isomery carbon tridecylene alcohol, sweet
The mass ratio of oily polyoxyethylene ether, hydroxyethyl ethylenediamine and phosphorus pentoxide is (29 ± 2): (27 ± 2): (36 ± 2): (8 ±
1)。
7. water-base metal galvanic corrosion inhibitor according to claim 1, it is characterised in that: the organosilicon corrosion inhibiter is
One or more of organosilan, organosiloxane, organosilazanes.
8. water-base metal galvanic corrosion inhibitor according to claim 1, it is characterised in that: the Alcohol amine type borate is
One or more of ethanol amine borate, diethanol amine borate, triethanolamine borate；Preferably, the hydramine
Type borate is triethanolamine borate.
9. polyalcohol phosphoric acid in a kind of water-base metal galvanic corrosion inhibitor prepared as described in claim 3 to 6 any one
The preparation method of ester, it is characterised in that: the following steps are included:
(1) isomerous tridecanol, glycerin polyoxyethylene ether, hydroxyethyl ethylenediamine mixing is even, obtain mixture A；
(2) mixture A is heated while agitating, and is slowly added to phosphorus pentoxide, when temperature to be heated is 110 ± 5 DEG C,
Continue to stir 1-2h；
(3) step (2) continues mixture vacuum distillation of the stirring simultaneously to phosphorus pentoxide and mixture A, steams reaction and gives birth to
At water, until solid react completely and it is anhydrous steam after, stop react, products therefrom is Polyol Phosphate.
10. the preparation method of Polyol Phosphate according to claim 9, it is characterised in that: reaction is anti-in double glazing
It answers in kettle and carries out；Mixing speed is 200-600rad/min.
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Cited By (1)
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| CN112778992A (en) * | 2020-01-16 | 2021-05-11 | 中海油(天津)油田化工有限公司 | Corrosion inhibitor for annular protection liquid and preparation method and application thereof |
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