CN102584076A - Reinforcing steel bar corrosion inhibitor and preparation method thereof - Google Patents
Reinforcing steel bar corrosion inhibitor and preparation method thereof Download PDFInfo
- Publication number
- CN102584076A CN102584076A CN201210011609XA CN201210011609A CN102584076A CN 102584076 A CN102584076 A CN 102584076A CN 201210011609X A CN201210011609X A CN 201210011609XA CN 201210011609 A CN201210011609 A CN 201210011609A CN 102584076 A CN102584076 A CN 102584076A
- Authority
- CN
- China
- Prior art keywords
- rust inhibitor
- reinforcing bar
- diethylenetriamine
- triethylene glycol
- steel bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a reinforcing steel bar corrosion inhibitor and a preparation method thereof. The reinforcing steel bar corrosion inhibitor is composed of the following raw materials in percentage by weight: 12-30% of diethylenetriamine, 8-20% of triethylene glycol, 4-15% of aminoacrylic acid and the balance of water. The reinforcing steel bar corrosion inhibitor disclosed by the invention has a good corrosion inhibition effect.
Description
Technical field
The present invention relates to building material technical field, specifically a kind of reinforcing bar rust inhibitor and preparation method thereof.
Background technology
Steel Concrete is current most popular material of construction.The results in premature failure of the concrete structure that causes because of concrete reinforcing steel generation corrosion has become the important factor that influences concrete structure durability.Reinforcement corrosion is quite surprising directly and the indirect economic loss except causing, and also causes the mass consumption of the resource such as iron and steel, cement, sandstone and the energy.Have data to show, U.S.'s loss relevant with steel bar corrosion accounts for 40% of total corrosion loss, and only the bridge corrosion failure just accounts for wherein half.And the total corrosion loss of the U.S. in nineteen ninety-five can account for 4.2% of GDP, above 300,000,000,000 dollars.Some other statistic data of doing the country of similar statistics shows that also the annual total corrosion loss in various countries can account for 2%～4% of GDP.In China, etching problem is more outstanding, and a lot of oceanographic engineerings, Industrial buildings, bridge etc. are repaired building up several years or just needed in the more than ten years.Through investigation, 18 sea port docks in south China, access bridge are after using 7～25 years, and corrosion failure reaches 89%, and anticorrosion situation is very severe.
Prevent the measure of reinforcement corrosion in the concrete, can be divided into basic measures and addition thereto.Basic measures comprise: adopt high performance concrete, improve concrete density, suitably increase thickness of concrete cover, prevent that concrete from cracking.In the practical applications, generally still need and take suitable addition thereto, comprising: electrochemical protection method (galvanic protection), employing coated reinforcement, concrete surface coating protection and interpolation reinforcing bar rust inhibitor.Above-mentioned measure respectively has characteristics and pros and cons, and the reinforcing bar rust inhibitor then is proved to be simple economy and outstanding effect technical measures.
The FSU, Japan and the U.S. are the countries that uses the reinforcing bar rust inhibitor the earliest.Early stage reinforcing bar rust inhibitor product mainly comprises Sodium Nitrite, Sodium Benzoate and chromic salt etc.But these rust inhibitors all have negative impact in various degree to concrete time of coagulation, early strength and later strength.The nitrites rust inhibitor belongs to the oxidized form inhibiter, corrosion mitigating effect is only just arranged when consumption is enough, otherwise can cause serious local corrosion, brings hidden danger to structure.In addition, because calcium nitrite is carcinogenic, a lot of countries such as Switzerland and Germany ban use of.
Because the problem of inorganic nitrite rust inhibitor aspect environmental protection, organic rust inhibitor is developed on a large scale very much since the eighties in 20th century.The type organic reinforcing steel bar rust inhibitor of mixing has amine, aldehydes, alkynol class, organo phosphorous compounds, organosulfur compound, carboxylic acid and its esters, sulfonic acid and its esters, heterogeneous ring compound etc. usually.
Patent CN101007717A has described the reinforcing bar rust inhibitor of being made up of amido alcohol, aqueous acid, can cause concrete basicity to descend like this, may produce the liberation of hydrogen corrosion.Patent CN101269932A has described a kind of water-proof corrosion inhibitor, is made up of the aqueous solution of modified organic silicon and amino alcohol, and the silicane material does not have corrosion inhibition, thereby does not also have the compound synergistic effect of rust inhibitor.Patent CN1872770A has described a kind of reinforcing bar rust inhibitor; Be Sodium orthomolybdate, diethylenetriamine, propenyl thiocarbamide, 1; The aqueous solution of 4-butynediol; Wherein Sodium orthomolybdate exist can the accelerate concrete steel bar corrosion with quantity not sufficient problem, and Sodium orthomolybdate costs an arm and a leg, and promotes the use of and receives great restriction.
Summary of the invention
In order to solve the problems referred to above that exist in the prior art, the invention provides a kind of reinforcing bar rust inhibitor, it is effective that reinforcing bar rust inhibitor of the present invention has the resistance rust.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
A kind of reinforcing bar rust inhibitor, form by the raw material of following mass percent:
Diethylenetriamine 12～30%
Triethylene glycol 8～20%
Aminoacrylic acid 4～15%
Surplus is a water.
Further, wherein the total content of diethylenetriamine, triethylene glycol and aminoacrylic acid more than or equal to 30%.
Further, said reinforcing bar rust inhibitor, form by the raw material of following mass percent:
Diethylenetriamine 15～26%
Triethylene glycol 12～18%
Aminoacrylic acid 7～12%
Surplus is a water.
Another object of the present invention is the preparation method that a kind of above-mentioned reinforcing bar rust inhibitor is provided, and the rust inhibitor that this method makes has resistance rust good effectiveness.Its technical scheme is following:
A kind of preparation method of above-mentioned reinforcing bar rust inhibitor adds the diethylenetriamine that takes by weighing, triethylene glycol and aminoacrylic acid successively to stir in the entry and gets final product.
Compared with prior art, beneficial effect of the present invention is:
Reinforcing bar rust inhibitor of the present invention both may be mixed in in the concrete and had used, and use on the surface that also can be coated to buildings, and the resistance rust is effective, environmentally safe.The content of diethylenetriamine, triethylene glycol and aminoacrylic acid in the reinforcing bar rust inhibitor of the present invention accounts for 30% of total amount at least can make resistance rust effect more excellent.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail, but not as to qualification of the present invention.
Embodiment one:
Take by weighing diethylenetriamine 120g, triethylene glycol 100g and aminoacrylic acid 150g, above-mentioned raw materials joins in the 630g water successively, and stirring gets final product.
Embodiment two:
Take by weighing diethylenetriamine 300g, triethylene glycol 200g and aminoacrylic acid 150g, above-mentioned raw materials joins in the 350g water successively, and stirring gets final product.
Embodiment three:
Take by weighing diethylenetriamine 200g, triethylene glycol 150g and aminoacrylic acid 120g, above-mentioned raw materials joins in the 530g water successively, and stirring gets final product.
Embodiment four:
Take by weighing diethylenetriamine 120g, triethylene glycol 80g and aminoacrylic acid 40g, above-mentioned raw materials joins in the 760g water successively, and stirring gets final product.
Below through relevant test verify the effect of reinforcing bar rust inhibitor of the present invention.
Experiment one, salt water immersion test
It is that 50mm, wide 25mm, thickness are that the surfaceness of 2mm is the test piece of Ra6.3 μ m that Q235 steel car is become length.Preparation contains the saturated Ca (OH) of 3%NaCl
2Solution.Above-mentioned solution is packed in five round stopper bottles, and wherein the solution in the headpin does not add rust inhibitor, as a comparison example.The rust inhibitor that adds the embodiment one that accounts for whole solution amount 2% (mass percent) in No. 2 bottles is respectively the rust inhibitor of the embodiment two, embodiment three and the embodiment four that add whole solution amount 2% (mass percent) in No. 3 bottles, No. 4 bottles and the kingpin.Respectively put into two test pieces in the vial, observing the test piece surface respectively at the 1st, 3,5,7 day has non-corroding to take place, and surveys its final weight loss.(weight loss is the mass loss MV that the test piece mass loss deducts test piece pickling blank test.) following table 1 is the weight loss and the appearance of test sample after 7 days.
Table 1
| Test sample | Average weight loss Δ W (g) | The test specimen form |
| The contrast test piece | 0.0621 | The surface floating rust |
| Embodiment one test piece | 0.0004 | Rustless |
| Embodiment two test pieces | 0.0002 | Rustless |
| Embodiment three test pieces | 0.0003 | Rustless |
| Embodiment four test pieces | 0.0005 | Rustless |
Through 7 days test, present the evenly floating rust of one deck on the surface of contrast test piece, and the rusty stain of the bottle high-visible test piece in the end after by corrosion, test solution is muddy simultaneously, and the rust end is wherein floating.Corrosion phenomena is not seen on test piece surface in the test solution of the rust inhibitor of the interpolation embodiment of the invention, and test solution is limpid.And the resistance rust effect that rust inhibitor of the present invention is good also can be described through the weight loss data in the table 1.
Test two is to the test of concrete crushing strength influence
200 tons of pressure experiment machines of NYL-200D type are adopted in test.Concrete examination body uses Lafarge cement P.O.42.5, and wc is 0.5, is of a size of 10cm * 10cm * 10cm.Since rust inhibitor of the present invention both can in mix use also can beyond be coated with use, so a kind of be the rust inhibitor of embodiments of the invention one to be mixed to use in the concrete according to 2% of cement amount process the examination body; Second kind is the rust inhibitor of waiting to try after body formed 7 days to divide on the surface three brushing embodiment one, waits to try body and carries out compressive strength test in the time of 28 days; The third is to wait to try body divides three brushing embodiment one on the surface after 28 days rust inhibitor, places and carries out compressive strength test after 28 days.The comparing result of ultimate compression strength sees the following form 2.
Table 2
| ? | The rust inhibitor addition manner | Test period | Compressive strength rate, % |
| First kind | In mix | 28 days | 108 |
| Second kind | External coating after 7 days | 28 days | 103 |
| The third | External coating after the 28 day length of time | Brushed back 28 days | 100 |
Have in the table and can find out, in mix rust inhibitor and early stage brushing rust inhibitor can improve concrete ultimate compression strength.
Above embodiment is merely exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection domain, this modification or be equal to replacement and also should be regarded as dropping in protection scope of the present invention.
Claims (4)
1. a reinforcing bar rust inhibitor is characterized in that, is made up of the raw material of following mass percent:
Diethylenetriamine 12～30%
Triethylene glycol 8～20%
Aminoacrylic acid 4～15%
Surplus is a water.
2. reinforcing bar rust inhibitor according to claim 1 is characterized in that wherein the total content of diethylenetriamine, triethylene glycol and aminoacrylic acid is more than or equal to 30%.
3. reinforcing bar rust inhibitor according to claim 1 is characterized in that, said reinforcing bar rust inhibitor is made up of the raw material of following mass percent:
Diethylenetriamine 15～26%
Triethylene glycol 12～18%
Aminoacrylic acid 7～12%
Surplus is a water.
4. the preparation method of the described reinforcing bar rust inhibitor of claim 1-3 is characterized in that, the diethylenetriamine that takes by weighing, triethylene glycol and aminoacrylic acid is added to stir in the entry successively get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011609XA CN102584076A (en) | 2012-01-16 | 2012-01-16 | Reinforcing steel bar corrosion inhibitor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011609XA CN102584076A (en) | 2012-01-16 | 2012-01-16 | Reinforcing steel bar corrosion inhibitor and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102584076A true CN102584076A (en) | 2012-07-18 |
Family
ID=46473419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210011609XA Pending CN102584076A (en) | 2012-01-16 | 2012-01-16 | Reinforcing steel bar corrosion inhibitor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102584076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739231A (en) * | 2014-01-07 | 2014-04-23 | 江苏苏博特新材料股份有限公司 | Concrete steel fiber antirust agent with self-antirust function and preparation method of concrete steel fiber antirust agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190455A (en) * | 2010-03-12 | 2011-09-21 | 中国科学院金属研究所 | Doped non-nitrite-based corrosion inhibitor for steel bar in concrete |
-
2012
- 2012-01-16 CN CN201210011609XA patent/CN102584076A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190455A (en) * | 2010-03-12 | 2011-09-21 | 中国科学院金属研究所 | Doped non-nitrite-based corrosion inhibitor for steel bar in concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739231A (en) * | 2014-01-07 | 2014-04-23 | 江苏苏博特新材料股份有限公司 | Concrete steel fiber antirust agent with self-antirust function and preparation method of concrete steel fiber antirust agent |
| CN103739231B (en) * | 2014-01-07 | 2015-06-24 | 江苏苏博特新材料股份有限公司 | Concrete steel fiber antirust agent with self-antirust function and preparation method of concrete steel fiber antirust agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wombacher et al. | Aminoalcohol based mixed corrosion inhibitors | |
| CN102584077B (en) | Loading-type reinforcing steel bar corrosion inhibitor and preparation method thereof | |
| CN102190455B (en) | Doped non-nitrite-based corrosion inhibitor for steel bar in concrete | |
| CN104478286B (en) | A kind of compound concrete anti-corrosive rust inhibitor | |
| CN107265909B (en) | Composite sodium silicate/tris (hydroxymethyl) aminomethane reinforced concrete corrosion inhibitor and application thereof | |
| CN103172290B (en) | Environment-friendly reinforcing bar corrosion inhibitor | |
| CN102079640A (en) | High corrosion resistance reinforced concrete corrosion inhibitor | |
| CN103880316B (en) | One mixes the organic glucosides rust-resistant agent for concrete reinforcing bar of type and application | |
| CN104529218A (en) | Multifunctional organic rust inhibitor and preparation method thereof | |
| CN105601150A (en) | New steel bar rust inhibitor and application thereof | |
| CN101876078A (en) | Additive for pickling degreasing and derusting of steel | |
| CN101844889B (en) | Composite organic reinforcing steel bar rust inhibitor for reinforced concrete | |
| CN101844890B (en) | Organic reinforcing steel bar rust inhibitor for reinforced concrete | |
| CN106082751A (en) | A kind of environmentally friendly antirust for reinforced concrete and application thereof | |
| CN104692702A (en) | High-performance steel bar corrosion inhibitor | |
| CN107352829A (en) | A kind of resistance rust composition and compound corrosion inhibitor, the preparation method and application of compound corrosion inhibitor | |
| CN101982564A (en) | Rust-removing and anti-rusting agent for iron and steel | |
| CN104388942B (en) | Steel rust inhibitor and preparation method thereof | |
| CN109943158A (en) | Screw-thread steel antirust solution, preparation method and screw-thread steel surface treatment method | |
| CN102584076A (en) | Reinforcing steel bar corrosion inhibitor and preparation method thereof | |
| CN103172292A (en) | Composite steel bar rust inhibitor | |
| CN103740440B (en) | A kind of collocation method synthesizing hydraulic support hydraulic liquid inhibiter | |
| CN103911609B (en) | A kind of environmentally friendly zinc-plated silicate passivation solution and preparation method thereof and application | |
| Guo et al. | Effect of rust inhibitor on the composition of steel passive film in carbonized concrete | |
| CN106746855B (en) | A kind of reinforcing steel bar corrosion inhibitor and preparation method thereof, application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120718 |