CN110284141A - A kind of gas phase corrosion inhibitor and the sustained release gas phase resistance tranish film box comprising it - Google Patents
A kind of gas phase corrosion inhibitor and the sustained release gas phase resistance tranish film box comprising it Download PDFInfo
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- CN110284141A CN110284141A CN201910622748.8A CN201910622748A CN110284141A CN 110284141 A CN110284141 A CN 110284141A CN 201910622748 A CN201910622748 A CN 201910622748A CN 110284141 A CN110284141 A CN 110284141A
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- gas phase
- corrosion inhibitor
- resistance rust
- acid
- rust
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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
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
Abstract
The invention discloses a kind of gas phase corrosion inhibitor and include its sustained release gas phase resistance tranish film box.The gas phase corrosion inhibitor includes that weight ratio is (60-70): (10-20): resistance rust ingredient, polyvinyl alcohol and the solvent of (10-20), resistance rust ingredient include 40-50 parts of the first aliphatic amino acid, 20-25 parts of organic amine, 5-10 parts of the second amino-acid alkyl ester and 5-20 parts of benzoate.There is bellows the gas phase resistance rust diaphragm of slow-release function and gas phase corrosion inhibitor provided by the invention to be used cooperatively, keep volatilizable gas phase resistance rust ingredient volatilization slowly and uniform, it can permanent inhibition, diaphragm further extends the service life of bellows on the basis of guaranteeing resistance rust, reduce the dressing frequency, the bellows shape is simple, also can be recycled.
Description
Technical field
The invention belongs to metals to hinder rust Material Field, and in particular to a kind of gas phase corrosion inhibitor and the sustained release gas phase resistance comprising it
Tranish film box.
Background technique
With the implementation of state grid corporation of smart grid plan, substation will develop to intelligent substation, primary equipment
Upgrade to intelligent power equipment, secondary device then becomes intelligent control unit, realizes that the big fusion of a secondary device enterprise is
One revolutionary variation.However, power equipment internal corrosion problem emerges one after another, especially with the electricity of intelligent power equipment
In gas holder, corrosion problem once becomes one of the bottleneck for hindering smart grid development.Under dramatic change, Distribution Network Equipment is prevented and treated
Internal metal parts corrosion problem is an important topic in smart grid development process, to equipment life and is safely operated all
With very important influence.
Brush anticorrosive paint be widely used, one of most representative conventional method, but in preparation and coating process
It will cause environmental pollution, the probability that the problems such as holiday, pinprick generates is also very big, be easy to cause missed point to corrode, largely effects on length
Phase using effect, if missed point more very appears in on-off switch or microswitch, the harm and loss of generation can not
Estimation.Existing more than 100 years so far history of coat of metal rust-prevent technology, the principle that it is adsorbed by anodic solution, cathode,
Various oxidizable metal device surfaces form a protective layer.With the expansion of electroplating technology application field, disadvantage is more next
It is more obvious, especially metal layer thickness is relatively thin (about 8 μm), thus brings became uneven is even, is also easy to produce the influences such as crackle to hinder
The problem of effect of becoming rusty, has become the obstacle that coating rust-prevent technology further develops.
Vapor phase inhibitor is a kind of emerging efficient, economic anti-rust metal means.Vapor phase inhibitor at normal temperature can be certainly
It is dynamic to volatilize antirust molecule perhaps group carrys out antirust molecule or group is formed in metal surface by physics or chemical mode
A protective layer, to achieve the purpose that inhibit corrosion of metal.
Patent CN201910025513.0 discloses a kind of gas phase corrosion inhibitor and preparation method thereof and protects in Architectural Corrosion
The application of aspect, including resistance rust ingredient and solvent, weight ratio are (50-60): (40-50), the solvent include organic solvent
And inorganic solvent, resistance rust ingredient include the raw material of following weight ratio: 45-50 parts of aliphatic amino acid, triethanolamine 20-25
Part, 3-5 parts of benzotriazole, 25-30 parts of sodium benzoate.Patent CN201610655887.7 discloses a kind of composite gas phase anti-rust agent
And the preparation method of gas-phase antirusting plastic film, it is made of polyaniline, organic amine salt and benzoate, in the antirust agent
In, the mass percent of the polyaniline is 20%-40%, the mass percent of the organic amine salt is 20%-40%,
The mass percent of the benzoate is 20%-40%.Gas phase corrosion inhibitor disclosed in above-mentioned patent is volatile
Organic compound, resistance rust effect are that the gas phase resistance with antirust activity volatilized by it becomes rusty ingredient to maintain.But it is above-mentioned special
There is no the regulation or sustained release measure for corrosion inhibitor in benefit, the volatilization of corrosion inhibitor active constituent is too fast, and volatilization process is uncontrollable, makes
It obtains corrosion inhibitor i.e. volatilization in a short time to finish, needs ceaselessly to supplement expensive corrosion inhibitor, be both unfavorable for save the cost, Er Qiegeng
It is time-consuming and laborious to change corrosion inhibitor.Therefore, it needs exploitation one kind and is able to maintain the resistance rust product that corrosion inhibitor plays resistance rust effect for a long time.
Summary of the invention
The present invention overcomes the shortcomings of existing corrosion inhibitor, mentions to solve the problems, such as that Distribution Network Equipment internal metal parts corrode
Hinder the volatilization of rust ingredient slowly for a kind of gas phase and uniformly, can permanent inhibition corrosion inhibitor, use the sustained release for containing this corrosion inhibitor
Gas phase hinders tranish film box and carries out security application to Distribution Network Equipment inside.
To achieve the above object of the invention, the present invention adopts the following technical scheme:
A kind of gas phase corrosion inhibitor, the gas phase corrosion inhibitor include that weight ratio is (60-70): (10-20): the resistance of (10-20)
Become rusty ingredient, polyvinyl alcohol and solvent, and the resistance rust ingredient includes the raw material of following parts by weight: the first aliphatic amino acid 40-50
Part, 20-25 parts of organic amine, 5-10 parts of the second amino-acid alkyl ester and 5-20 parts of benzoate.
Preferably, the weight average molecular weight of the polyvinyl alcohol is 1000-2000；And/or the solvent is that weight ratio is
(10-15): the alcohols of (85-90) and the mixed solvent of water, the preferred methanol of the alcohols solvent, ethyl alcohol, propyl alcohol, butanol, amylalcohol
And at least one of hexanol.
Preferably, first aliphatic amino acid is Beta-alanine, amion acetic acid, glutamic acid, asparagine or paddy ammonia
The mixing of any one or more in amide；And/or the organic amine be triethanolamine, isopropylamine, diethylamine, cyclohexylamine,
Octylame, ethylenediamine, diethylene triamine, the mixing of any one or more in triethylene tetraamine；And/or the amino acid
Arrcostab is at least one of the second aliphatic amines acid alkyl ester and aromatic amino acid Arrcostab, and the Arrcostab is carbon
The Arrcostab of atomicity 1-10, the preferably tertiary alkyl ester of carbon atom number 4-7；And/or the benzoate is sodium benzoate, benzene
The mixing of any one or more of potassium formate and ammonium benzoate.
Preferably, the amino acid moiety of the second aliphatic amines acid alkyl ester is selected from amion acetic acid, α-alanine, half
Cystine (cysteine), cystine (cystine), lysine, alginic acid, glutamic acid, Beta-alanine or γ-ammonia junket
Acid；And/or the amino acid moiety of the aromatic amino acid Arrcostab is selected from tryptophan, proline or hydroxy-proline.
The preparation method of the gas phase corrosion inhibitor, comprising the following steps:
(1) amino-acid alkyl ester is mixed in proportion with alcohols solvent, is stirred evenly；
(2) polyvinyl alcohol, the first aliphatic amino acid and benzoate are mixed in proportion with water, is stirred evenly；
(3) organic amine is weighed in proportion, it is mixed with mixture obtained by above-mentioned steps (1) and step (2), is obtained
The gas phase corrosion inhibitor.
A kind of sustained release gas phase resistance tranish film box containing gas phase corrosion inhibitor, the sustained release gas phase resistance tranish film box includes: with gas
The bellows ontology of phase resistance rust diaphragm and the above-mentioned gas phase corrosion inhibitor being placed in bellows ontology.
There is no particular limitation for the material and shape of bellows ontology, as long as being capable of forming certain space is used to store resistance rust
The container of agent, material can be metal, plastics, wooden product etc., as long as the gas phase resistance rust ingredient that corrosion inhibitor volatilizes will not
It is permeable from the material of bellows.
Preferably, the gas phase resistance rust diaphragm includes: basal layer, includes the non-woven fabrics of Kynoar for coating；
Waterproof gas barrier layer has microcellular structure thereon, and the microcellular structure aperture is 0.05-0.15 μm, porosity 30-
80%,
Bubble point pressure is 5-20KPa, and gas phase resistance rust ingredient transmitance is 4-5g/m2·d；
The gas phase resistance rust ingredient is the organic gas with resistance rust effect that corrosion inhibitor volatilizes.
Preferably, gas phase resistance rust diaphragm with a thickness of 100-450 μm, preferably 250-300 μm；And/or non-woven fabrics
For long filament or staple fiber；And/or the porosity of the waterproof gas barrier layer is 55-65%, bubble point pressure 15-20KPa, gas phase
Resistance rust ingredient transmitance is 4.21-4.8g/m2·d。
Preferably, the gas phase resistance rust diaphragm is obtained by the preparation method included the following steps:
In organic solvent by Kynoar dissolution, it stirs and heating water bath, heat preservation, addition contains polyvinylpyrrolidine
Ketone and 2- thioglycol additive stand, realize that complete deaeration obtains precursor liquid；
Precursor liquid obtained by step (1) is cast on non-woven fabrics and forms film, film embathes in circulating water first, after system volume again
It impregnates in water, takes out, dry, obtain the gas phase resistance rust diaphragm.
The present invention also provides the purposes of above-mentioned sustained release gas phase resistance tranish film box, for the anti-of grid equipment internal metal parts
Shield.The size of the gentle phase resistance rust diaphragm of the dosage of gas phase corrosion inhibitor of the present invention hinders the inside of the equipment of rust according to actual needs
Space size and resistance were become rusty depending on the time.
Compared to the prior art, use gas phase corrosion inhibitor provided by the invention sustained release gas phase resistance tranish film box achieve with
It is lower the utility model has the advantages that
1. sustained release gas phase prepared by the present invention hinders tranish film box, the gas phase resistance rust diaphragm with slow-release function, so that volatilizable
Gas phase resistance rust ingredient volatilization slowly and uniformly, resistance rust ingredient disperse in air, can at any time for metal augment protective layer, have
Permanent corrosion mitigating effect.
2. inventor in gas phase corrosion inhibitor it has been unexpectedly found that be added the controllable gas phase resistance of a certain amount of polyvinyl alcohol
The rate of volatilization of rust ingredient keeps the release of gas phase volatile ingredient more persistently uniform.
It include numerous high electronegativity hetero atom N, O 3. gas phase corrosion inhibitor provided by the invention is the compounding of a variety of corrosion inhibitors
And functional group's ester group and carboxyl, be conducive to molecule and nucleophyllic chemical adsorption occurs to metal be adsorbed on metal surface to form chelate, these
Chelate forms molecular level protective layer Dynamic Adsorption in metal surface, ultimately forms a kind of metastable structure body, can digital preservation
Metal prevents its corrosion.And the proportion of suitable compounding corrosion inhibitor is filtered out, so that corrosion inhibitor volatilized in a long time
Effectively resistance rust ingredient is continual and steady, and rate of volatilization is maintained at a more constant range.
4. gas phase of the invention hinders tranish film box, sustained release gas phase resistance tranish film box is further extended on the basis of guaranteeing resistance rust
Service life, reduce the dressing frequency, save cost of labor.In addition, sustained release gas phase of the invention hinders tranish film box safety and environmental protection and shape
Simply, it can be placed in inside grid equipment, be not necessarily to complex operations, also can be recycled.
Specific embodiment
It to a kind of gas phase corrosion inhibitor provided by the invention and include that its sustained release gas phase hinders rust below in conjunction with specific embodiment
Bellows is further explained, and Distribution Network Equipment involved in specific implementation process is electrical cabinet, polyvinyl alcohol used
Weight average molecular weight is 1800.
In the embodiment of the present invention gas phase used resistance rust diaphragm and its preparation can with application reference people it is preceding application No. is
CN201910530135.1 patent application.
The gas phase hinders rust diaphragm
Basal layer includes the non-woven fabrics of Kynoar for coating；
Waterproof gas barrier layer has microcellular structure thereon, and microcellular structure aperture is 0.13 μm, porosity 63.4%,
Bubble point pressure is 17.5KPa, and gas phase resistance rust ingredient transmitance is 4.75g/m2·d；
Gas phase resistance rust ingredient is the organic gas with resistance rust effect that corrosion inhibitor volatilizes.
Film with a thickness of 250 μm；Non-woven fabrics is staple fiber；The porosity of waterproof gas barrier layer is 63.5%.
The preparation method of the gas phase resistance rust diaphragm, comprising the following steps:
(1) 20-40 parts by weight Kynoar is dissolved in 50-150 parts by weight dimethylformamide, stirs 5-12h
And 30-40 DEG C of heating water bath, constant temperature water bath 1.5-5h forms stable mixed solution later, and it is adding for 3-7 that parts by weight, which are added,
Add agent, additive contains polyvinylpyrrolidone and 2- thioglycol, and the mass percent of 2- thioglycol is 2- in additive
15wt% stands 2-6h, realizes that complete deaeration obtains film liquid precursor；Preferred additive is polyethylene glycol, ethyl alcohol, polyethylene pyrrole
Pyrrolidone, poly- (methyl) methyl acrylate and 2- thioglycol, weight ratio 33-48:8-15:15-25:5-40:4-7.
(2) film liquid precursor obtained by step (1) is cast on non-woven fabrics, scrapes liquid film forming using scraper with a thickness of 100-
450 μm of film, above-mentioned film impregnates 5-15min in 20-30 DEG C of water temperature, the circulating water that water speed is 2-10m/min first, after system is rolled up
12-36h is impregnated in 25-35 DEG C of water again, is taken out, 1-3d dries, and obtains the film of gas phase resistance rust, the thickness of film is about 100-450 μ
m。
The preparation method of amino-acid alkyl ester of the present invention the following steps are included:
0.8-1mol amino acid is mixed with 1.2-3mol concentrated hydrochloric acid, 20-80 DEG C of reaction 0.5-8h obtains amino acid hydrochloric acid
Salt adds the 1.2-3mol tertiary alcohol, is passed through hydrogen chloride gas, and esterification 2-8h is carried out at 45-90 DEG C, be filtered, washed,
Dry sterling amino acid tertiary alkyl ester.The amino acid can be amion acetic acid, α-alanine, cysteine (the third ammonia of sulfydryl
Acid), cystine (cystine), lysine, alginic acid, glutamic acid, Beta-alanine, γ-butyric acid, tryptophan, proline or
Hydroxy-proline, the tertiary alcohol can be the tertiary alcohol that carbon atom number is 4-7.Using tertiary alcohol esterifiable amino acid be in order to prevent alcohol it
Between polycondensation, the amino acid tertiary alkyl ester finally obtained can show permanent vapor phase corrosion inhibitor effect.
Amino-acid alkyl ester uses the amion acetic acid tert-butyl ester in the embodiment of the present invention, be for the ease of probe into other resistances become rusty at
Dividing the influence for resistance rust effect, other amino-acid alkyl ester class corrosion inhibitors can generate similar technical effect, therefore, this
Locate specific amino-acid alkyl ester, i.e. the amion acetic acid tert-butyl ester should not be construed as a kind of limitation to the scope of the present invention,
Its amino-acid alkyl ester class corrosion inhibitor can play same effect.Used aliphatic amino acid, organic amine in embodiment
Class corrosion inhibitor, benzoate corrosion inhibitor are same situations, although using specific resistance rust in following specific embodiments
Agent, but should not be construed as limiting the scope of protection of the present invention, this field has similar structures, resistance rust with the same function
Agent all falls in the scope of protection of the present invention.
The preparation of preparation example gas phase corrosion inhibitor
Preparation example 1
Formula:
Gas phase corrosion inhibitor is made of 60 parts of resistance rust ingredients, 15 parts of polyvinyl alcohol and 20 parts of solvents；
Resistance rust ingredient includes glutamic acid, triethanolamine, the amion acetic acid tert-butyl ester and sodium benzoate, weight ratio 40:25:5:
15；
Solvent is the mixed solvent of second alcohol and water, weight ratio 15:85.
Preparation method:
(1) it weighs and is uniformly mixed in amino-acid alkyl ester addition ethyl alcohol；
(2) polyvinyl alcohol, glutamic acid and sodium benzoate are proportionally added into water, are uniformly mixed；
(3) mixture obtained by step (1) and step (2) is mixed to uniform；
(4) mixture obtained by triethanolamine addition step (3) is weighed to be mixed, it is final to obtain required gas phase corrosion inhibitor.
Preparation example 2
Other are identical as preparation example 1, and difference is resistance rust ingredient glutamic acid, triethanolamine, the tertiary fourth of amion acetic acid in formula
Ester and sodium benzoate, weight ratio 45:20:8:20.
Preparation example 3
Other are identical as preparation example 1, and difference is resistance rust ingredient glutamic acid, triethanolamine, the tertiary fourth of amion acetic acid in formula
Ester and sodium benzoate, weight ratio 50:23:10:15.
Compare preparation example 1
Other are identical as preparation example 1, and difference is resistance rust ingredient glutamic acid, triethanolamine and sodium benzoate, weight in formula
Amount is than being 40:20:15.
Compare preparation example 2
Other are identical as preparation example 1, difference be formulated in resistance rust ingredient include triethanolamine, the amion acetic acid tert-butyl ester and
Sodium benzoate, weight ratio 25:5:15.
Preparation example 4
Other are identical as preparation example 2, and difference is that gas phase corrosion inhibitor is by 60 parts of resistances rust ingredients, 10 parts of polyvinyl alcohol in formula
It is formed with 20 parts of solvents.
Preparation example 5
Other are identical as preparation example 2, and difference is that gas phase corrosion inhibitor is by 60 parts of resistances rust ingredients, 20 parts of polyvinyl alcohol in formula
It is formed with 20 parts of solvents.
Preparation example 6
Other are identical as preparation example 2, and difference is that gas phase corrosion inhibitor is by 60 parts of resistances rust ingredients, 25 parts of polyvinyl alcohol in formula
It is formed with 20 parts of solvents.
Preparation example 7
Other are identical as preparation example 2, and difference is that including glutamic acid in resistance rust ingredient in formula replaces with amion acetic acid.
Compare preparation example 3
Other are identical as preparation example 2, and difference is that gas phase corrosion inhibitor is by 60 parts of resistances rust ingredients and 20 parts of solvent groups in formula
At.
Embodiment is sustained the assembling of gas phase resistance tranish film box
Gas phase corrosion inhibitor containing above-mentioned preparation example 1-7 and comparison preparation example 1-3 preparation is assembled into sustained release gas phase resistance rust
The size of bellows, film and ontology is 4cm × 4cm × 3cm cuboid, and there are an opening in bellows top or side, and opening area can
Regulated and controled with the area for hindering rust diaphragm according to gas phase, general opening area is slightly smaller than the area of gas phase resistance rust diaphragm.The present invention is implemented
In example, the additional amount of corrosion inhibitor is 7g, the area 10cm of gas phase resistance rust diaphragm2, preparation example 1-7 gained sustained release gas phase resistance tranish film box
Reference numeral is 1-7, the corresponding sustained release gas phase resistance tranish film box number of comparison preparation example 1-3 be 1. -3..
Comparative example 1
The corrosion inhibitor of preparation example 2 is placed in bellows, but is not provided with gas phase resistance rust diaphragm in bellows, as a comparison embodiment
1,4. bellows number is.
Gas phase resistance tranish film box derived above is subjected to following tests, detects the sustained release resistance rust effect of bellows, specific method
It is as follows:
Test the test of 1 enclosure space volatile los:
Steaming of the resulting weight-loss ratio mainly with gas phase corrosion inhibitor is tested in the volatile los of enclosure space by gas phase corrosion inhibitor
Vapour pressure is corresponding.In general, the big gas phase corrosion inhibitor of vapour pressure, which can quickly volatilize, is adsorbed onto metal surface and inhibits earlier
Corrosion process, the small gas phase corrosion inhibitor of vapour pressure then have lasting corrosion mitigating effect.But the vapour pressure of usual gas phase corrosion inhibitor is very
Small (0.133-0.013Pa under room temperature), with instrument be not easy to measure, and document record it is different.Volatile los experiment is logical
The size crossed the size for comparing gas phase corrosion inhibitor volatile weight loss rate and compare vapour phase inhibitor vapour pressure indirectly, can be to avoid with instrument
The error of device measurement, several vapour phase inhibitors successively pass through for 24 hours, 48h, 72h.It is empty that gas phase corrosion inhibitor volatile los tests semi-hermetic
Between, test hinders the weight loss of corrosion inhibitor in tranish film box to calculate the weight-loss ratio of gas phase corrosion inhibitor.
Experimental method:
7g vapour phase inhibitor is filled, the gas phase resistance rust diaphragm area of bellows is 10cm2Volatile rust prevention box, in the same baking
50 DEG C of constant temperature laser heating 72 hours in case opens baking oven blower, weighs within every 24 hours primary, calculating weight-loss ratio, experimental result
See
Table 1:
2 gas phase Screening assays and vapor phase corrosion inhibitor performance test are tested, experiment reference standard GB/T 19532-2004 is surveyed
Examination.
1) gas phase Screening assay:
It tests and is carried out in the 250ml conical flask equipped with rubber stopper, 7g gas phase corrosion inhibitor of the present invention will be first housed, on bellows
Gas phase resistance rust diaphragm area be 10cm21-7 and 1. -4. and thermostatted water at 50 DEG C of the conical flask of Specimens handled well
In bath after constant temperature 2 hours, (wherein sample away from vapour phase inhibitor upper end about 10-15mm at) takes out conical flask from water bath with thermostatic control,
In order to keep the temperature in conical flask, the distilled water of 15ml is added into conical flask, then this bottle is placed in water bath with thermostatic control permanent
50 DEG C of temperature, heating 8 hours, stop heating 16 hours daily, and every 24 hours are a period, the time that record corrosion occurs earliest.
2) vapor phase corrosion inhibitor performance test:
7g gas phase corrosion inhibitor will be housed, the gas phase resistance rust diaphragm area on bellows is 10cm2Bellows 1-7 and 1. -4. put
Enter in the large beaker of 1000ml, grey cast-iron sample is placed on above large beaker.Entire large beaker is put into constant temperature (40 DEG C) water
Then the NaHCO of 100ml is added in pre- film 3 days in bath into large beaker3+ NaCl+ anhydrous Na2SO4Electrolyte solution, three's
Concentration is 100mg, and experimental period is 3 days, daily (40 DEG C) of constant temperature heating 12 hours in water bath with thermostatic control, and other times are natural
It is cooling.After experiment, corrosion product is removed with method ibid, is cleaned, dry, weighing calculates corrosion inhibition rate.
The calculating of corrosion inhibition rate is according to formula:
R=(△ G0-△Gi1)/△G0× 100%
R is corrosion inhibition rate (%) in formula；△G0The difference (g) of forward and backward quality is tested for the cast iron coupon of non-aerating phase corrosion inhibitor:
△ G is the difference (g) of the forward and backward quality of sample experiment of aerating phase corrosion inhibitor.
Table 2
By the experimental result in Tables 1 and 2 can be seen that sustained release gas phase provided by the invention resistance tranish film box resistance rust effect it is good,
Corrosion inhibition rate is high, is suitble to long-term rust prevention corrosion.Inventor, can be into one it has been unexpectedly found that a certain amount of polyvinyl alcohol is added
Step improves the slow releasing function of corrosion inhibitor, and the gas phase resistance rust activity component concentration being used for a long time in air will not reduce, and is embodied in slow
The weight-loss ratio decline of outgassing phase resistance tranish film box slowly, effectively plays the purpose of gas phase resistance rust ingredient slow release, gas phase is made to volatilize
The release of ingredient more persistently uniformly, will not all volatilize in a short period of time, that is, the time corroded occur than later, gas phase
Volatile ingredient can give full play to rust prevention function, thus corrosion inhibition rate is high.But polyvinyl alcohol content cannot be too high, otherwise will lead to resistance
Effective component is difficult to release from corrosion inhibitor in rust agent, and then hinders rust effect decline；In addition polyvinyl alcohol content can not
Very little, the purpose of corrosion inhibitor slow release can not otherwise be played.Therefore, the dosage of polyvinyl alcohol should be limited in one in the present invention
In a zone of reasonableness.In addition, for further increase resistance rust sustained release effect, the present invention hinder tranish film box additionally use specific morphology and
The gas phase resistance rust diaphragm of gas permeation rate, can control the transmission rates of gas phase volatile ingredient, is further volatilized into gas phase
The release divided is more persistently uniform.
Preferred embodiment of the invention corrosion inhibition rate is high, and gas phase volatile ingredient evaporation rate is moderate, is suitble to prevent from corroding for a long time.
But above-mentioned detailed description is illustrating for one of them possible embodiments of the present invention, and preferred embodiment is simultaneously
It is non-to limit the scope of the patents of the invention, all equivalence enforcements or change without departing from carried out by the present invention are intended to be limited solely by this hair
In the range of bright technical solution.
Claims (10)
1. a kind of gas phase corrosion inhibitor, which is characterized in that the gas phase corrosion inhibitor includes that weight ratio is (60-70): (10-20):
Resistance rust ingredient, polyvinyl alcohol and the solvent of (10-20), the resistance rust ingredient include the raw material of following parts by weight: the first aliphatic
40-50 parts of amino acid, 20-25 parts of organic amine, 5-10 parts of the second amino-acid alkyl ester and 5-20 parts of benzoate.
2. gas phase corrosion inhibitor as described in claim 1, which is characterized in that the weight average molecular weight of the polyvinyl alcohol is 1000-
2000；And/or it is (10-15): the alcohols of (85-90) and the mixed solvent of water, the alcohols solvent that the solvent, which is weight ratio,
It is preferred that at least one of methanol, ethyl alcohol, propyl alcohol, butanol, amylalcohol and hexanol.
3. gas phase corrosion inhibitor as described in claim 1, which is characterized in that first aliphatic amino acid be Beta-alanine,
The mixing of any one or more in amion acetic acid, glutamic acid, asparagine or glutamine；And/or the organic amine is
It is triethanolamine, isopropylamine, diethylamine, cyclohexylamine, octylame, ethylenediamine, diethylene triamine, any one in triethylene tetraamine
Kind or a variety of mixing；And/or the amino-acid alkyl ester is the second aliphatic amines acid alkyl ester and aromatic amino acid alkane
At least one of base ester, the Arrcostab are the Arrcostab of carbon atom number 1-10, the preferably tertiary alkyl of carbon atom number 4-7
Ester；And/or the benzoate is the mixing of any one or more of sodium benzoate, Potassium Benzoate and ammonium benzoate.
4. gas phase corrosion inhibitor as described in claim 1, which is characterized in that the amino of the second aliphatic amines acid alkyl ester
Acid moieties are selected from amion acetic acid, α-alanine, cysteine (cysteine), cystine (cystine), lysine, brown
Alginic acid, glutamic acid, Beta-alanine or γ-aminobutyric acid；And/or the amino acid moiety of the aromatic amino acid Arrcostab is selected from color
Propylhomoserin, proline or hydroxy-proline.
5. the preparation method of gas phase corrosion inhibitor as described in claim any one of 1-4, comprising the following steps:
(1) amino-acid alkyl ester is mixed in proportion with alcohols solvent, is stirred evenly；
(2) polyvinyl alcohol, the first aliphatic amino acid and benzoate are mixed in proportion with water, is stirred evenly；
(3) organic amine is weighed in proportion, it is mixed with mixture obtained by above-mentioned steps (1) and step (2), is obtained described
Gas phase corrosion inhibitor.
6. a kind of sustained release gas phase containing gas phase corrosion inhibitor hinders tranish film box, which is characterized in that the sustained release gas phase hinders tranish film box packet
Include: the bellows ontology with gas phase resistance rust diaphragm is hindered with the described in any item gas phases of claim 1-4 being placed in bellows ontology
Rust agent.
7. sustained release gas phase hinders tranish film box as claimed in claim 6, which is characterized in that the gas phase resistance rust diaphragm includes: substrate
Layer includes the non-woven fabrics of Kynoar for coating；
Waterproof gas barrier layer has microcellular structure thereon, and the microcellular structure aperture is 0.05-0.15 μm, porosity 30-80%,
Bubble point pressure is 5-20KPa, and gas phase resistance rust ingredient transmitance is 4-5g/m2·d；
The gas phase resistance rust ingredient is the organic gas with resistance rust effect that corrosion inhibitor volatilizes.
8. sustained release gas phase hinders tranish film box as claimed in claim 7, which is characterized in that gas phase resistance rust diaphragm with a thickness of
100-450 μm, preferably 250-300 μm；And/or non-woven fabrics is long filament or staple fiber；The hole of the waterproof gas barrier layer and/or
Gap rate is 55-65%, and bubble point pressure 15-20KPa, gas phase resistance rust ingredient transmitance is 4.21-4.8g/m2·d。
9. sustained release gas phase hinders tranish film box as claimed in claim 7 or 8, which is characterized in that the gas phase resistance rust diaphragm is by including
The preparation method of following steps obtains:
(1) in organic solvent by Kynoar dissolution, it stirs and heating water bath, heat preservation, addition contains polyvinylpyrrolidine
Ketone and 2- thioglycol additive stand, realize that complete deaeration obtains precursor liquid；
(2) precursor liquid obtained by step (1) is cast on non-woven fabrics and forms film, film embathes in circulating water first, after system volume again
It impregnates in water, takes out, dry, obtain the gas phase resistance rust diaphragm.
10. the purposes of any one of the claim 6-9 sustained release gas phase resistance tranish film box, which is characterized in that in grid equipment
The protection of portion's metal parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622748.8A CN110284141B (en) | 2019-07-11 | 2019-07-11 | Gas phase rust inhibitor and slow-release gas phase rust-inhibiting capsule containing same |
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| CN111526683A (en) * | 2020-04-30 | 2020-08-11 | 中电保力（北京）科技有限公司 | Passive moisture-proof and rust-proof method for electrical cabinet |
| CN114075052A (en) * | 2020-08-18 | 2022-02-22 | 博特新材料泰州有限公司 | Composite electromigration reinforcing steel bar corrosion inhibitor and preparation method thereof |
| CN114105511A (en) * | 2021-11-10 | 2022-03-01 | 国网电子商务有限公司 | Corrosion-resistant gas-phase rust inhibitor, preparation method thereof and gas-phase rust-resistant film box |
| CN114427096A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Compound corrosion inhibitor suitable for storage tank gas phase area corrosion medium and preparation method thereof |
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