CN103938196A - Aqueous in-situ rusty treating liquid for structural steel and preparation method of treating liquid - Google Patents
Aqueous in-situ rusty treating liquid for structural steel and preparation method of treating liquid Download PDFInfo
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- CN103938196A CN103938196A CN201410151649.3A CN201410151649A CN103938196A CN 103938196 A CN103938196 A CN 103938196A CN 201410151649 A CN201410151649 A CN 201410151649A CN 103938196 A CN103938196 A CN 103938196A
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Abstract
The invention relates to aqueous in-situ rusty treating liquid for structural steel and a preparation method of the treating liquid. The aqueous in-situ rusty treating liquid for structural steel comprises the following components in percent by mass: 5%-12% of phosphoric acid, 3%-8% of rust layer transforming agent, 3%-10% of water-soluble high polymer film-forming agent, 5%-10% of rust layer penetrating agent, 0.5%-5% of surfactant, 1%-5% of defoaming agent, 0.5%-5% of thickener, and the balance of water. When being used, the rusty treating liquid disclosed by the invention can be directly coated without clearing a rust layer on the surface; transformation of the rust layer treated by the aqueous in-situ rusty treating liquid disclosed by the invention is obvious, and a formed inert protective layer has better corrosion prevention capability. The rusty treating liquid disclosed by the invention is simple in preparation process, low in cost, quick in drying time, convenient to construct and capable of being widely applied to the rusty coating treatment of structural steel in various industries.
Description
Technical field
The present invention relates to band rust treatment solution, refer to particularly the former bit strip rust of a kind of structure iron use treatment solution and preparation method thereof.
Background technology
Structure iron is widely used in industry associated mechanical member, supporting member and the storage facilitiess such as electric power, building, bridge, boats and ships and chemical industry as a kind of conventional metallic substance.Structure iron will certainly cause galvanic corrosion throughout the year in complicated atmospheric environment, has shortened its work-ing life and has caused potential safety hazard.Traditional derusting method is mainly injection or centrifugal blast cleaning, power tool rust cleaning, manual polishing rust cleaning, chemical rust removing etc., but it is larger that ubiquitous shortcoming is operation easier, environment or human body are had to harm, and injection or centrifugal blast cleaning are also limited by steel part size and dimension, return the rust time fast.The large-scale component of shaft tower class can only eliminate rust by electrician's instrument or manual polishing mode in addition, and effect is generally undesirable.If shaft tower surface corrosion product (as iron rust, having the characteristics such as loose, porous, expansion) is not removed totally, its supporting anticorrosion paint film can cause paint blister to come off and then lose preservative effect due to the continuous expansion of iron rust.
The band rust treatment solution and the conversion and prevention paint of rust that have existed at present some for these problems, to develop, these coating can directly be coated in the steel surface that gets rusty, and by osmosis, the mode of iron rust reaction or conversion are suppressed to it and continue reaction, reach rot-resistant effect.In conversion and prevention paint of rust, generally contain resene material or polymer emulsion, after being dried, at substrate surface, form and stablize and there is certain thickness organic membrane, can directly as priming paint or finish paint, use.In the band rust treatment solution existing at present and part conversion and prevention paint of rust, all contain human body is had to the hexavalent chromate of strong carcinogenesis and nitrite and as metal ions such as copper, nickel, extremely unfriendly to environment; Part rust-inhibiting paint is complex process not only, and grow (generally needing 24h) time of drying, and it is limited in one's ability to turn rust, rusty scale thickness is had to stricter requirement, film forming physical strength is low, undesirable for the combination effect of specific follow-up matched coating, has therefore limited its range of application.
Summary of the invention
Deficiency in view of above-mentioned prior art existence; the invention provides the former bit strip rust of a kind of structure iron use treatment solution and preparation method thereof; the band rust treatment solution making by the inventive method can effectively change into inertia protective layer by rusty scale; and environmentally friendly; can also form organic polymer protective film at substrate surface, the effect supporting with follow-up priming paint is excellent simultaneously.
The technical scheme that realizes the object of the invention employing is the former bit strip rust of a kind of structure iron use treatment solution, comprise: rusty scale permeate agent, the tensio-active agent of 0.5%-5%, the thickening material of the defoamer of 1%-5%, 0.5%-5% and the water of surplus of the rusty scale transforming agent of the phosphoric acid of 5%-12%, 3%-8%, the water-soluble polymer membrane-forming agent of 3%-10%, 5%-10%, above per-cent is mass percent.
In addition, the present invention also provides the preparation method of the former bit strip rust of said structure steel use treatment solution, and the method comprises:
Step 1, by rusty scale transforming agent water at 55 ℃～65 ℃ stirring and dissolving to clarification, obtain the rusty scale transforming agent aqueous solution;
Step 2, water-soluble polymer film forming matter water stirring and dissolving to solution at 80 ℃～90 ℃ is clarified, then added tensio-active agent stirring and dissolving to solution to clarify, obtain the macromolecule filming thing aqueous solution;
Step 3, the rusty scale transforming agent aqueous solution that step 1 is configured are slowly added drop-wise in the macromolecule filming thing aqueous solution that step 2 prepares under the condition of 50～80 ℃, and broken height speed is not stirred to solution clarification;
In step 4, the solution for preparing to step 3, add at ambient temperature phosphoric acid, rusty scale permeate agent, defoamer and thickening material, dissolve and be stirred to solution clarification, finally filter and obtain the former bit strip rust of structure iron use treatment solution.
In technique scheme, described rusty scale transforming agent is Weibull; Described water-soluble polymer membrane-forming agent is one or more the combination in polyvinyl alcohol, PEG 20000, polyvinylpyrrolidone; Described rusty scale permeate agent is one or more the combination in citric acid, sodium tartrate, glycerine, the trimethyl carbinol; Described tensio-active agent is one or more the combination in op-10, Sodium dodecylbenzene sulfonate, Macrogol 200; Described defoamer is one or more the combination in tributyl phosphate, Virahol, poly-dimethoxysiloxane etc.; Described thickening material is one or more the combination in Xylo-Mucine, Natvosol etc.
The present invention has the following advantages:
1, band rust treatment solution of the present invention is water-soluble treatment solution, containing to the larger sexavalent chrome of harm, heavy metal ion, nitrite, not environmentally friendly.
While 2, using band rust treatment solution of the present invention, can directly apply, and the conversion of the rusty scale after the present invention processes obviously without removing Surface Rust, the inertia protective layer of formation has good anti-corrosion capability.
3, substrate surface forms organic polymer protective membrane and follow-up paint film matching capacity are good, and the bonding force of follow-up paint film is promoted significantly.
4, the preparation technology of band rust treatment solution of the present invention is simple, with low cost, and time of drying fast (lower than 1 hour), easy construction, can be widely used in every profession and trade structure iron application over rust and process.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of structure iron Surface Rust while not using the former bit strip of structure iron use of the present invention rust treatment solution.
Fig. 2 is that structure iron Surface Rust is used the scanning electron microscope (SEM) photograph after the former bit strip rust of structure iron use of the present invention treatment solution.
Fig. 3 is for adopting treatment solution of the present invention to process the polarization curve of front and back substrate surface.
Embodiment
The preparation method of the former bit strip rust of structure iron use of the present invention treatment solution comprises the following steps:
Get by mass percentage the phosphoric acid of 5%-12%, the water-soluble polymer membrane-forming agent of the rusty scale transforming agent of 3%-8%, 3%-10%, the rusty scale permeate agent of 5%-10%, the tensio-active agent of 0.5%-5%, the thickening material of the defoamer of 1%-5%, 0.5%-5% and the water of surplus, wherein, the present invention's rusty scale transforming agent used is Weibull; Water-soluble polymer membrane-forming agent used is one or more the combination in polyvinyl alcohol, PEG 20000, polyvinylpyrrolidone; Rusty scale permeate agent used is one or more the combination in citric acid, sodium tartrate, glycerine, the trimethyl carbinol; Described tensio-active agent is one or more the combination in op-10, Sodium dodecylbenzene sulfonate, Macrogol 200; Defoamer used is one or more the combination in tributyl phosphate, Virahol, poly-dimethoxysiloxane; Thickening material used is one or both combination of Xylo-Mucine, Natvosol etc.Then according to following steps, operate:
Step 1, by rusty scale transforming agent water at 55 ℃～65 ℃ stirring and dissolving to clarification, obtain the rusty scale transforming agent aqueous solution, in this step, churning time is 0.5～1 hour.
Step 2, water-soluble polymer film forming matter water stirring and dissolving to solution at 80 ℃～90 ℃ is clarified, then added tensio-active agent stirring and dissolving to solution to clarify, obtain the macromolecule filming thing aqueous solution, this step churning time is 2～5 hours.
Step 3, the rusty scale transforming agent aqueous solution that step 1 is configured are slowly added drop-wise in the macromolecule filming thing aqueous solution that step 2 prepares under the condition of 60 ℃, broken height speed is not stirred to solution clarification, the time that wherein drips process is 10～30 minutes, and after dripping, the mix and blend time is 1～2 hour.
In step 4, the solution for preparing to step 3, add at ambient temperature phosphoric acid, rusty scale permeate agent, defoamer and thickening material, dissolving is stirred to solution clarification, finally filter and obtain the former bit strip rust of structure iron use treatment solution, this step churning time is 10～30 minutes.
The band rust treatment solution making by the inventive method below in conjunction with specific embodiment explanation, and to this band rust treatment solution test experiments.
Embodiment 1
By 4% Weibull under 60 ℃ of conditions by water dissolution, and and 3% Virahol, after mixing, obtain tannic acid solution stand-by.Again 5% polyvinyl alcohol is stirred under 90 ℃ of conditions after dissolving completely, be cooled to room temperature and add 0.9% Macrogol 200, after solution clarification, the tannic acid solution of preparation is before dripped into slowly to continuous high-speed stirring, finally after mixing completely, solution adds 10% phosphoric acid, 2% sodium tartrate, 0.1% tributyl phosphate and 0.5% Xylo-Mucine, after stirring 0.5h, filtration obtains reddish-brown settled solution, is the former bit strip rust of structure iron use of the present invention treatment solution.
Embodiment 2:
By 3% Weibull under 60 ℃ of conditions by water dissolution, and and 4% the trimethyl carbinol, after mixing, obtain tannic acid solution stand-by.Again the dodecane phenyl sodium sulfonate of 4% polyvinylpyrrolidone and 0.9% is dissolved in water at 60 ℃, after solution clarification, the tannic acid solution of preparation is before dripped into slowly to continuous high-speed stirring, finally after mixing completely, solution adds 10% phosphoric acid, 3% citric acid, 0.5% Virahol, 0.1% tributyl phosphate and 0.5% Xylo-Mucine, after stirring 0.5h, filtration obtains reddish-brown settled solution, is structure iron aqueous rusty treatment solution of the present invention.
The disclosed rust cleaning removers of the patent formula that the former bit strip rust treatment solution of structure iron use below embodiment 1 and embodiment 2 being made and publication number are CN103173772A is prepared comparative sample and is carried out simultaneous test, wherein comparative sample adopts formula to adopt citric acid 220g/L, acid polyethylene 130g/L, sodium hydroxide 20g/L, tetrazolium 10g/L, S-WAT 25g/L, all the other are water.Experimental results is as shown in following table 1 and table 2.
Table 1
Table 1 simultaneous test ground used is band rust gusset, resistance to neutral salt spray with solidity to corrosion test be on ground, spray together with example 1 and example 2 band rust treatment solutions, after complete drying, test.
Table 2
Table 2 simultaneous test ground used is band rust gusset, and test sample plate sprays respectively one embodiment 1, embodiment 2 and is with rust treatment solution and comparative sample, brushes epoxy zinc rich primer He Er road alkyd finish after complete drying one, places test afterwards in 10 days.
The former bit strip rust of structure iron use of the present invention treatment solution adopts the preparation of conventional chemical reagent, under the sour environment providing at phosphoric acid, by the immersional wetting of the effective infiltration of rusty scale permeate agent and tensio-active agent, Weibull and Fe
3+there is chelatropic reaction, transform rusty scale completely and impel substrate surface passivation, effectively stop it to corrode; Can guarantee the adding of water-soluble polymer membrane-forming agent to form at substrate surface the polymeric membrane of intact, stop airborne oxygen G&W to enter and cause the continuation of corrosion to occur, impel the raising of passive film solidity to corrosion and compactness simultaneously.The existence of thickening material guarantees that treatment solution and rusty scale have the sufficient reaction times, avoids dry and causes too soon rusty scale conversion not thorough.
The former bit strip rust of structure iron use of the present invention treatment solution is aqueous solution,, containing human body being had to harm heavy metal ion and nitrite, is not no more than 1 hour time of drying, has saved the engineering time greatly, improves operating efficiency.The present invention can adopt the various ways constructions such as spraying, brushing and trowelling, is applicable to all kinds of structure iron rusty scales and processes.
The former bit strip rust of structure iron use of the present invention treatment solution is change structure steel Surface Rust pattern effectively, by scanning electron microscope (SEM), to processing the microscopic appearance of front and rear surfaces, observe, Fig. 1 is not for being used the surface topography for the treatment of solution of the present invention, Fig. 2 is for being used the surface topography after treatment solution of the present invention, after contrast, can find, rusty scale is after treatment fine and close lamella by loose porous structural transformation, effectively active rusty scale is transformed into inertia.
The former bit strip rust of structure iron use of the present invention treatment solution can effectively increase the antiseptic power of base material, and Fig. 3 is for adopting treatment solution of the present invention to process the polarization curve of front and back substrate surface, and X-coordinate is corrosion potential, and ordinate zou is corrosion current density.As shown in the figure, surface current density after treatment obviously reduces, and corrosion potential is just becoming, and illustrates that the conversion coating of substrate surface has stronger anti-corrosion capability.
Claims (10)
1. the former bit strip rust of structure iron use treatment solution, it is characterized in that, comprise: rusty scale permeate agent, the tensio-active agent of 0.5%-5%, the thickening material of the defoamer of 1%-5%, 0.5%-5% and the water of surplus of the rusty scale transforming agent of the phosphoric acid of 5%-12%, 3%-8%, the water-soluble polymer membrane-forming agent of 3%-10%, 5%-10%, above per-cent is mass percent.
2. the former bit strip rust of structure iron use according to claim 1 treatment solution, is characterized in that: described rusty scale transforming agent is Weibull.
3. the former bit strip of structure iron use according to claim 1 rust treatment solution, is characterized in that: described water-soluble polymer membrane-forming agent is one or more the combination in polyvinyl alcohol, PEG 20000, polyvinylpyrrolidone.
4. the former bit strip of structure iron use according to claim 1 rust treatment solution, is characterized in that: described rusty scale permeate agent is one or more the combination in citric acid, sodium tartrate, glycerine, the trimethyl carbinol.
5. the former bit strip of structure iron use according to claim 1 rust treatment solution, is characterized in that: described tensio-active agent is one or more the combination in op-10, Sodium dodecylbenzene sulfonate, Macrogol 200.
6. the former bit strip of structure iron use according to claim 1 rust treatment solution, is characterized in that: described defoamer is one or more the combination in tributyl phosphate, Virahol, poly-dimethoxysiloxane.
7. the former bit strip of structure iron use according to claim 1 rust treatment solution, is characterized in that: described thickening material is one or both the combination in Xylo-Mucine, Natvosol.
8. a preparation method for the former bit strip rust of structure iron use treatment solution described in claim 1, is characterized in that, comprising:
Step 1, by rusty scale transforming agent water at 55 ℃～65 ℃ stirring and dissolving to clarification, obtain the rusty scale transforming agent aqueous solution;
Step 2, water-soluble polymer film forming matter water stirring and dissolving to solution at 80 ℃～90 ℃ is clarified, then added tensio-active agent stirring and dissolving to solution to clarify, obtain the macromolecule filming thing aqueous solution;
Step 3, the rusty scale transforming agent aqueous solution that step 1 is configured are slowly added drop-wise in the macromolecule filming thing aqueous solution that step 2 prepares under the condition of 60 ℃, and broken height speed is not stirred to solution clarification;
In step 4, the solution for preparing to step 3, add at ambient temperature phosphoric acid, rusty scale permeate agent, defoamer and thickening material, dissolve and be stirred to solution clarification, finally filter and obtain the former bit strip rust of structure iron use treatment solution.
9. the preparation method of the former bit strip of structure iron use rust treatment solution according to claim 8, is characterized in that: described rusty scale transforming agent is Weibull; Described water-soluble polymer membrane-forming agent is one or more the combination in polyvinyl alcohol, PEG 20000, polyvinylpyrrolidone; Described rusty scale permeate agent is one or more the combination in citric acid, sodium tartrate, glycerine, the trimethyl carbinol; Described tensio-active agent is one or more the combination in op-10, Sodium dodecylbenzene sulfonate, Macrogol 200; Described defoamer is one or more the combination in tributyl phosphate, Virahol, poly-dimethoxysiloxane; Described thickening material is one or both combination of Xylo-Mucine, Natvosol etc.
10. the preparation method of the former bit strip of structure iron use rust treatment solution according to claim 8, it is characterized in that: the dissolved stirring time of rusty scale transforming agent Weibull was with 0.5～1 hour, water-soluble polymer film forming matter dissolved stirring time is 2～5 hours, the time that tannic acid solution drips to macromolecule filming thing solution was with 15～30 minutes, rusty scale permeate agent, defoamer and thickening material dissolved stirring time were with 15～30 minutes with 1～2 hour both mix and blend times above.
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| CN104561976A (en) * | 2015-01-29 | 2015-04-29 | 贵州电网公司输电运行检修分公司 | Thick rust filled rust treatment solution and preparation method thereof |
| CN107829082A (en) * | 2017-11-07 | 2018-03-23 | 北京安邦之星科技有限公司 | Environment-friendly galvanizing layer film agent, preparation method and the rust-preventing film comprising the film agent |
| CN108070869A (en) * | 2017-11-30 | 2018-05-25 | 刘君宇 | A kind of nanometer of converting agent of iron rust and preparation method thereof |
| CN108193199A (en) * | 2017-12-20 | 2018-06-22 | 苏州禾川化学技术服务有限公司 | A kind of corrosion-resistant antirust of ironware is converted to film liquid |
| CN109758968A (en) * | 2018-12-03 | 2019-05-17 | 浙江工业大学 | A kind of compound emulsifier and preparation method thereof |
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| CN109758968B (en) * | 2018-12-03 | 2021-04-06 | 浙江工业大学 | Compound emulsifier and preparation method thereof |
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