A kind of steelwork aqueous, environmental protective antirust agent and its preparation method and application
Technical field
The present invention relates to metal rust preventing field, and in particular to the aqueous, environmental protective antirust agent field of steelwork.
Background technology
Corrosion of metal is common in society, but the phenomenon being difficult to avoid that, machinery that such as various metals are made, is set
Standby, building is got rusty in atmosphere because exposed for a long time, and when being full of substantial amounts of steam, salt fog in air, corrosion phenomena is just
More significantly, such as aircraft, boat, the in addition corrosion of metal influence also very huge for national economy, China 2012 because
It is the economic loss caused by corrosion with regard to 800,000,000,000 RMB, and the U.S. was shown in corrosion loss investigation result in 2010:Corrosion
Loss cause as many as about 476,000,000,000 dollars loss, this numeral probably accounted for national of the United States's total output value 1.2% it
It is many.And corrosion can also cause irreversible destruction and loss to the profile of metal, gloss and mechanical performance, what is had even can be with
Directly make product rejection, so as to cause wasting for resource, therefore for very must of just becoming of antirust treatment of metallic article
Will.
The conventional method for preventing or slowing down corrosion mainly has following several at present:
(1)New material is prepared, the alloy of trace element is such as added, and according to different environment, prepares different Metal Substrates
Material;
(2)Coating film:In the surface coating paint of metal material, strengthen antiseptic property;
(3)Passivation Treatment:By surface preparation means, dense oxidation film is obtained in metallic surface, such as by anodic oxidation,
Protective oxide layer is obtained in aluminium surface;
(4)The higher material of activity is added, galvanic cell is formed with substrate metal, and active metal is such as navigated as sacrificial electrode
Boat bottom coats zinc rich primer;
(5)Add antirust agent:It can make metal by good protection using the rustless property of antirust agent, or delay corrosion
Generation speed.
The content of the invention
The present invention provides a kind of content of each component in aqueous, environmental protective highly effective antirust agent for steelwork, the antirust agent
For:
Corrosion inhibiter A:4- penetenoic acids:2- amion acetic acids:N, N- dimethylethanolamine mass ratio=1:(1.6~2):(0.5 ~ 0.7),
Corrosion inhibiter A accounts for 2 ~ 4wt.% of antirust agent total amount;
Corrosion inhibiter B:1 ~ 2wt.% of inositol hexaphosphate;
Complexing agent:Ethylenediamine tetra-acetic acid:HPMA mass ratio=1:1,1 ~ 2.5wt.% of content;
Film forming agent:15 ~ 35wt.% of polyvinyl butyral resin;
Modified additive:Organic silicon modified by polyether surfactant:Neopelex mass ratio=2:(0.5~1), content
0.5~1.5wt.%;
Other additives:0.6 ~ 1wt.% of poly-aspartate;
Remaining as ethanol and deionized water, ethanol:Deionized water volume ratio=5:1.
Antirust agent is covered in steelwork surface by the present invention by way of brushing, spraying or soak, and soak time is less than
0.5 hour, more than 1 minute, it is then placed into 20 ~ 30oIn C insulating boxs, control humidity is below 30%, finally in metal surface
Film forming.
The preparation method of the steelwork antirust agent:It is put into 4- penetenoic acids, 2- amion acetic acids, N, N- diformazans in mass ratio first
Ethylethanolamine, deionized water, 75oUnder C, 2h is heated to reflux, is cooled, corrosion inhibiter solution A is obtained;Then stirring at normal temperature, by inositol
Six phosphates are dissolved in deionized water, obtain phytic acid aqueous solution of ester corrosion inhibiter B;Then by film forming agent polyvinyl butyral resin
Add in ethanol solution, prepare film forming agent solution;Then complexing agent, modified additive, poly-aspartate are added into deionized water,
50oMagnetic agitation 20min under C, cooling obtains uniform mixed liquor;Then above-mentioned corrosion inhibiter A and B is added into mixed liquor simultaneously, most
After add film forming agent, sealing reactor under conditions of, normal temperature, magnetic agitation 1 hour, obtain antirust agent.
Wherein, 0.05 ~ 2wt.% plasticizer is also contained in antirust agent, the plasticizer is selected from phthalic acid ester, citric acid
One kind in ester, sebacate, by film forming agent polyvinyl butyral resin and plasticizer phthalic acid ester, citrate, the last of the ten Heavenly stems two
In a kind of addition ethanol solution in acid esters, modified film forming agent solution is prepared.
Before using antirust agent, surface preparation-processing of rust removing-washing-dehydrogenation is carried out to the steelwork got rusty in advance
Processing-natural cooling processing, becomes rusty wherein surface treatment removes part to be polished in advance using 240# ~ 360# sand paper, processing of rust removing
For chemical derusting, rust remover contains inorganic 25 ~ 40wt.% of mixed acid, 5 ~ 30wt.% of organic acid, zwitterionic surfactant 2 ~ 4
Wt.%, the wt.% of complexing agent 7 ~ 12, the wt.% of corrosion inhibiter 2 ~ 5, the wt.% of bleeding agent 2 ~ 3, the wt.% of additional salt 5 ~ 10, additional adjuvants
0.7-1 wt.%, wherein it is 4 that inorganic mixed acid, which is mass ratio,:1 hydrochloric acid and nitric acid mixed acid, organic acid are sulfinic acid, amino sulphur
One or more mixtures in acid or oxalic acid, zwitterionic surfactant is Cocoamidopropyl betaine, and complexing agent is
One kind in potassium rhodanide or sodium sulfocyanate, corrosion inhibiter is one kind in coloured glaze base benzothiazole, sodium metasilicate, methenamine, infiltration
Agent is heterogeneous ten alcohol polyoxyethylene ether, and additional salt is ammonium fluoride, and additional adjuvants are not influence the polyoxyethylene polyoxy of bubble system
Propyl alcohol amidogen ether or dimethyl silicone polymer defoamer, and polyoxy second fatty acid esters of sorbitan class or polyoxyethylene fatty acid ester
Class solubilizer.
Using and select for each component in rust remover:(1)Using the 4- penetenoic acids of compounding, 2- amion acetic acids and N,
N- dimethylethanolamines, heating generation acid amides antirust agent raw material, can firmly be attached to metal surface, mainly carboxylic acid hydramine
There are lone pair electrons with the N and O atom in alkylolamides molecule, the metal surface effect generation absorption that there can be d unoccupied orbitals with iron etc.
Property diaphragm, prevent corrosive medium oxygen and water equimolecular from directly being contacted with metal surface, and then play effective inhibition to protect
Effect;(2)Inositol hexaphosphate, directly can be extracted, safety and environmental protection is pollution-free, and can reduce corrosion inhibiter A from plant
Consumption.With metal ion complexation reaction occurs for the numerous group of the natural organic matter molecule, forms stable chelant ring cover and exists
On metal surface;(3)Complex compound is compounded using ethylenediamine tetra-acetic acid and HPMA, and ethylenediamine tetra-acetic acid has good
Complexing and peptizaiton, and HPMA plays the role of adsorbing contaminant, can play a part of antisludging agent, can improve
The complexing of antirust agent each component;(4)The status of film forming agent is indispensable as corrosion inhibiter, polyvinyl butyral resin sheet
Body has high anti-corrosion, rustless property and cold resistance, most important to the high temperature and low-temperature stability of antirust agent, secondly poly- second
Enol butyral is to aluminium, and steel, iron, zinc has good adhesive attraction, but polyvinyl butyral resin is submissiveer, can add
Appropriate plasticizer is modified;(5)Neopelex surfactant improves the surface tension of antirust agent, but easily produces
Bubble, organic silicon modified by polyether surfactant has the high suds that disappear for neopelex bubble system,
Non-uniform phenomenon when reducing film forming, poly-aspartate has high environmentally friendly scale-inhibiting properties, improves the antiseptic property of antirust agent.
Antirust agent prepared by the present invention has following excellent technique effect:(1)It is environment-friendly, it is pollution-free;(2)Rust-proof effect
It is good, and with above-mentioned rust remover simultaneously in use, whole derusting rust-proofing process is simple, the time is short, better;(3)Film forming is uniform,
Nothing is punctured, leak or bubble;(4)After film forming, film has antiseptic property in itself, and higher with the adhesion of base material;(5)High temperature,
Low-temperature stability is good, and whole derusting system is without layering, or precipitation or rotten.
Brief description of the drawings
Fig. 1:The preparation method of steelwork antirust agent.
Embodiment
Film forming is tested:Using same corrosion steelwork thin slice, several piece is cut to, table is carried out to corrosion steelwork respectively
The processing of face pretreatment-processing of rust removing-washing-dehydrogenation-natural cooling, then enters sample in antirust agent after immersion 5min
Take out, hang, dry, observation specimen surface whether without broken hole, can be formed continuous uniform film be considered as it is qualified.
Neutral acid mist corrosion resistance test, each sample is placed in acid mist experiment chest 30 hours, sets blank test sample
Product, define the level to corrosion situation:1 grade:Without significant change;2 grades:Mild-moderate loss of gloss, non-corroding thing;3 grades:It is glossy, have
A small amount of rust;4 grades:Serious loss of gloss, rust is obvious;5 corrosion especially severes, cover substrate surface substantially.
Anti- air humidity corrosion test, selects film forming steelwork and is placed in 60oIn C, the drier of relative humidity more than 90%,
There is the time of corrosion in record.
Stability test:Antirust agent is placed in sealed glass jars, 85 ~ 90 are respectively placed inoC water-baths, and -10 ~ 0oC ice
In case, layering, or precipitation or rotten have been seen whether.
Embodiment 1
First, the steelwork got rusty is carried out at surface preparation-processing of rust removing-washing-dehydrogenation-natural cooling in advance
Reason, becomes rusty, processing of rust removing is chemical derusting, is derusted wherein surface treatment removes part to be polished in advance using 240# ~ 360# sand paper
Agent is:
Inorganic mixed acid, mass ratio is 4:1 hydrochloric acid and nitric acid mixed acid, 25wt.%
Organic acid, sulfinic acid 5wt.%
Zwitterionic surfactant, the wt.% of Cocoamidopropyl betaine 2
Complexing agent, the wt.% of potassium rhodanide 7
Corrosion inhibiter, coloured glaze base benzothiazole 2wt.%
Bleeding agent, heterogeneous ten alcohol polyoxyethylene ether 2wt.%
Additional salt, the wt.% of ammonium fluoride 5
Additional adjuvants, polyoxyethylene polyoxy propyl alcohol amidogen ether and polyoxy second fatty acid esters of sorbitan class, 0.7 wt.%;It is remaining
It is 3 for volume ratio:The solvent that 1 ethanol or ethylene glycol is constituted with deionization.
Then, by 1:1.8:0.6 mass ratio by 4- penetenoic acids, 2- amion acetic acids and N, N- dimethylethanolamine be put in from
In sub- water, 75oUnder C, 2h is heated to reflux, is cooled, corrosion inhibiter solution A is obtained;Then inositol hexaphosphate is dissolved in deionized water,
Stirring at normal temperature, obtains phytic acid aqueous solution of ester corrosion inhibiter B;Then polyvinyl butyral resin and plasticizer are added into ethanol molten
In liquid, modified film forming agent solution is prepared;Then complexing agent, modified additive, poly-aspartate, 50 are added into deionized wateroUnder C
Magnetic agitation 20min, cooling obtains uniform mixed liquor;Then above-mentioned corrosion inhibiter A and B is added into mixed liquor simultaneously, be eventually adding
Film forming agent, under conditions of sealing reactor, normal temperature, magnetic agitation 1 hour obtains antirust agent sample 1, remaining sample 2 ~ 7
Preparation method is consistent with sample 1, and "-" is no added.
Table 1
a:4- penetenoic acids:2- amion acetic acids:N, N- dimethylethanolamine mass ratio=1:1.8:0.6;
b:Ethylenediamine tetra-acetic acid:HPMA mass ratio=1:1;
c:Organic silicon modified by polyether surfactant:Neopelex mass ratio=2:1.
Brand-new environmentally friendly novel antirust agent prepared by premium properties of the present invention based on corrosion inhibiter and film forming agent, it prepares work
Skill is simple, and antirust agent can be good at being coated in metal surface, and film forming is uniformly complete, and anti-rust and corrosionproperties are splendid after film forming, and
Antirust agent stability is higher, and service life is long, improves the practical value of antirust agent.
Described above is embodiments of the present invention, it is noted that for those skilled in the art,
Under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as this hair
Bright protection domain.