CN109504975A - A kind of rust remover replacing hydrochloride derusting - Google Patents

A kind of rust remover replacing hydrochloride derusting Download PDF

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Publication number
CN109504975A
CN109504975A CN201910036380.7A CN201910036380A CN109504975A CN 109504975 A CN109504975 A CN 109504975A CN 201910036380 A CN201910036380 A CN 201910036380A CN 109504975 A CN109504975 A CN 109504975A
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parts
rust remover
acid
derusting
rust
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CN109504975B (en
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王薇
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Zhuji Huarui Chemical Fiber Factory
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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08Iron or steel
    • C23G1/088Iron or steel solutions containing organic acids

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The present invention provides a kind of rust removers for replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 20~30 parts of composite organic acid, 5~10 parts of polymethylacrylic acid, 6~12 parts of chromic anhydride, 10~20 parts of surfactant, 3~6 parts of sodium gluconate, 1~3 part of triethanolamine, 1~3 part of polyacrylamide, 1,1~2 part of 4- butynediols, 0.01~0.1 part of sodium chloride, 0.5~2 part of function additive, 70~90 parts of water;The pH of the rust remover is 6.0 or so, and density is 0.9~1.2g/cm3;Rust remover of the present invention does not use hydrochloric acid, i.e., reduces acid mist from source and generate, the substance being harmful to the human body is not used in rust remover, will not generate pollution to environment, be a kind of Environment-friendlyrust rust inhibitor;And this rust remover derusts, and performance is very excellent, and the derusting time is very short, while derusting rate is very high, effectively restores metal base surface gloss, great application prospect.

Description

A kind of rust remover replacing hydrochloride derusting
The application is divisional application, original application application No. is 201610893288.9, the applying date is October 13 in 2016 Day, it is entitled " a kind of environment-protective process for replacing hydrochloride derusting ".
Technical field
The invention belongs to metal-derustings, technical field of rust prevention, and in particular to a kind of rust remover for replacing hydrochloride derusting.
Background technique
Processing of rust removing is the basic working procedure before steel surface is covered with paint, lacquer, colour wash, etc..Derusting method is broadly divided into Mechanical Method and chemical method two Major class, they respectively have its feature, are suitable for different occasions.Wherein, chemical method is good, high-efficient with effect, technological operation is simple, The series of advantages such as at low cost, so being industrially applied widely.Common mode is to utilize derusting in chemical derusting Liquid, such as acid etc. clean steel surface.Its different sour prices is different, and the most commonly used is the lower sulfuric acid of price and salt Acid.Sulfuric acid risk is big, and washing is not easy to clean after pickling, and the residual acid left easily influences the subsequent handling of surface treatment, It therefore is more to use hydrochloric acid in actual production.
The technical process of steelwork surface treatment hydrochloride derusting is, first by steelwork in room temperature, concentration generally in 15- It is impregnated in 20% hydrochloric acid solution descaling bath, the time generally at 30 minutes to 2 hours, then uses the clear water of flowing in rinsing bowl It is rinsed, completes derusting pretreatment process in this way.But there are three problem of environmental pollutions for steelwork chlorohydric acid pickling: generating The spent acid of more acid mist, a large amount of acidic rinse water and 7% or more concentration, not only causes certain pollution to environment, and because Pickling-shop bad environments employ pickling operation worker to become extremely difficult in recent years, therefore, it is necessary to take to solve hydrochloric acid Derust existing problem of environmental pollution, and people have invented many methods.
For preventing acid mist, general there are mainly three types of methods: first is that passing through the suction opening that descaling bath edge is arranged in acid mist Acid mist purifying tower is sucked to purify acid mist, second is that acid fog inhibitor is covered on pickling solution surface, third is that the concentration for reducing hydrochloric acid arrives 10% or less.Acid mist purifying tower and acid fog inhibitor already belong to well known technology at present, although also constantly there is patented technology public Open, for example, CN034589, CN1010419, CN1O1210330, CN1O2443813, CN1O1864624, CN1O1810352 and CN1O2260875 etc. is disclosed and is pressed down mist additive by the pickling that various corrosion inhibiter, surfactant and complexing agent etc. form; CN100570007, CN1O1298681 and CN1O1569823 disclose closed descaling bath and acid fog recovery device etc..But both All there is the insurmountable problem of acid mist generated when steelwork is proposed from descaling bath in processing acid mist mode.Therefore, most effective The method of solution acid mist still reduce concentration of hydrochloric acid to 10% or less.Chinese patent CN1039850 discloses a kind of low acid concentration Derusting agent prescription: acid concentration 8-12%, 15-200g/L iron (III) ion, due to being formulated in such rust remover practical application In simple, there are steel matrix excessive erosion, need strong flushing that could remove loose rusty scale, therefore to generate a large amount of rinsing Water.
It is not to be exactly there are acid mist in conclusion derusting at present for steelwork plating and the pre-treatment of or immersion A large amount of rinse waters are needed, the demand for development of existing derusting is no longer satisfied using the technique that hydrochloric acid derusts.
Summary of the invention
The object of the present invention is to provide it is a kind of replace hydrochloride derusting rust remover, the rust remover derusting completely, do not hurt matrix, Stability of solution is good, efficiently quick.
To solve the above problems, the technical solution adopted by the present invention are as follows:
A kind of rust remover replacing hydrochloride derusting, is prepared from the following raw materials in parts by weight: 20~30 parts of composite organic acid, gathering 5~10 parts of methacrylic acid, 6~12 parts of chromic anhydride, 10~20 parts of surfactant, 3~6 parts of sodium gluconate, three ethyl alcohol 1~3 part of amine, 1~3 part of polyacrylamide, 1~2 part of Isosorbide-5-Nitrae-butynediols, 0.01~0.1 part of sodium chloride, function additive 0.5 ~2 parts, 70~90 parts of water;Wherein, the composite organic acid is aphthenic acids and tartaric acid is that 1:1~2 is formed by weight, described The pH of rust remover is 6.0 or so, and density is 0.9~1.2g/cm3
The technique of the derusting is the following steps are included: firstly, rust remover is added in derusting slot, and the steel and iron parts that will need to clean It immerses in rust remover, opens microwave, processing of rust removing is carried out under the radiation of microwave;Then, by the steel and iron parts of above-mentioned processing of rust removing It is rinsed from the clear water for proposing to be immersed in again in derusting slot in rinsing sink, by steel and iron parts from rinsing sink after rinsing Derusting is just completed in interior proposition.
The surfactant is nonionic surface active agent and anionic surfactant with mass ratio 1:1 compounding It forms, the nonionic surface active agent is nonylphenol polyoxyethylene ether, octyl phenol polyoxyethylene ether, coco-nut oil fatty acid two At least one of glycollic amide, fatty alcohol polyoxyethylene ether;The anionic surfactant is detergent alkylate sulphur Sour sodium and sodium sulfate of polyethenoxy ether of fatty alcohol.
The function additive is one of antifreezing agent, defoaming agent, solubilizer thickener or a variety of.
The microwave irradiation uses 1250 ± 50MHz of microwave generator, and irradiation time is 100~200 seconds.
It is connected with pH value monitor controller on the rinsing sink and is capable of the filter device of real-time circulation, the pH value Monitor controller is provided with alkaline matter;And the pH value for rinsing the clear water in sink is controlled by pH value monitor controller 7 or so.
The alkaline matter includes ammonium hydroxide, ammonium hydrogen carbonate, sodium bicarbonate, saleratus, sodium carbonate, potassium carbonate.
The preparation method of the rust remover includes the following steps: (1) in parts by weight, first adds 1/2 water in a kettle, Then composite organic acid, polymethylacrylic acid, chromic anhydride, gluconic acid are sequentially added while stirring with 100-150 revs/min of speed Sodium, sodium chloride, function additive, and 40~50 DEG C are heated to, 30~60min is kept the temperature, is let cool;(2) add into step (1) mixture Enter the triethanolamine, polyacrylamide and Isosorbide-5-Nitrae-butynediols of parts by weight, stirring dissolves it sufficiently;(3) it is living that surface is added Property agent in mixed solution into step (2), then convert remaining 1/2 water;Start agitating device, 30-50 revs/min, stirs 10 Minute, it stands to get the rust remover.
Technical effect of the invention are as follows: (1) of the present invention rust remover do not use hydrochloric acid, i.e., reduces acid mist from source and generate, Good water solubility, hydrolytic stability is high, and viscosity temperature characteristic is good, and viscosity index (VI) is high, and compressibility is small;Being not used in rust remover has human body Harmful substance will not generate pollution to environment, be a kind of Environment-friendlyrust rust inhibitor;(2) present invention uses based on composite organic acid, and Various functional components are equipped with, prepared rust remover derusting performance is very excellent;Wherein, polymethylacrylic acid can play destruction The effect of iron rust interior substructure accelerates the rate of derusting, derusting is more so as to increase the contact surface of iron rust and rust remover Add thoroughly, triethanolamine and polyacrylamide are with the use of can effectively reduce solution to the corrosivity of metal surface;The present invention Rust remover effectively restores metal base surface gloss, and no excessive erosion and Hydrogen Brittleness Phenomena generate;(3) pH value of rust remover of the present invention About 6.0, tend to be neutral, any type of corrosion is generated to equipment, system to avoid from source;(4) present invention uses Microwave derusting method overcomes rust remover in derust overlong time, derusting of normality and the technical deficiencies such as is not thorough.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to embodiment:
Embodiment 1
A kind of environment-protective process replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 20 parts of composite organic acid, 5 parts of polymethylacrylic acid, 6 parts of chromic anhydride, 5 parts of nonylphenol polyoxyethylene ether, dodecyl benzene sulfonic acid 5 parts of sodium, 3 parts of sodium gluconate, 1 part of triethanolamine, 1 part of polyacrylamide, 1 part of Isosorbide-5-Nitrae-butynediols, sodium chloride 0.01 Part, 0.2 part of defoaming agent, 0.3 part of solubilizer, 70 parts of water;Wherein, the composite organic acid be aphthenic acids and tartaric acid by weight Than being formed for 1:1.
Embodiment 2
A kind of environment-protective process replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 30 parts of composite organic acid, 10 parts of polymethylacrylic acid, 12 parts of chromic anhydride, 10 parts of octyl phenol polyoxyethylene ether, fatty alcohol polyoxy second 10 parts of alkene ether sodium sulfate, 6 parts of sodium gluconate, 3 parts of triethanolamine, 3 parts of polyacrylamide, 2 parts of Isosorbide-5-Nitrae-butynediols, chlorine Change 0.1 part of sodium, 0.3 part of antifreezing agent, 0.3 part of defoaming agent, 90 parts of water;Wherein, the composite organic acid is aphthenic acids and tartaric acid It is formed by weight for 1:2.
Embodiment 3
A kind of environment-protective process replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 25 parts of composite organic acid, 8 parts of polymethylacrylic acid, 9 parts of chromic anhydride, 10 parts of fatty alcohol polyoxyethylene ether, detergent alkylate sulphur 5 parts of sour sodium, 5 parts of sodium gluconate, 2 parts of triethanolamine, 2 parts of polyacrylamide, 1.5 parts of Isosorbide-5-Nitrae-butynediols, sodium chloride 0.06 part, 0.4 part of solubilizer, 0.4 part of thickener, 80 parts of water;Wherein, the composite organic acid is aphthenic acids and tartaric acid by weight Amount is than being that 1:1.5 is formed.
Embodiment 4
A kind of environment-protective process replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 28 parts of composite organic acid, 7 parts of polymethylacrylic acid, 10 parts of chromic anhydride, 10 parts of cocoanut fatty acid diethanolamide, fatty alcohol 6 parts of polyethenoxy ether sodium sulfate, 5 parts of sodium gluconate, 3 parts of triethanolamine, 2 parts of polyacrylamide, Isosorbide-5-Nitrae-butynediols 1.2 parts, 0.04 part of sodium chloride, 1.2 parts of function additive, 82 parts of water;Wherein, the composite organic acid is that aphthenic acids is pressed with tartaric acid Weight ratio is 1:1.2 composition.
Embodiment 5
A kind of environment-protective process replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 24 parts of composite organic acid, 7 parts of polymethylacrylic acid, 8 parts of chromic anhydride, 5 parts of octyl phenol polyoxyethylene ether, aliphatic alcohol polyethenoxy 7 parts of ether sodium sulfate, 4 parts of sodium gluconate, 1.3 parts of triethanolamine, 1.4 parts of polyacrylamide, Isosorbide-5-Nitrae-butynediols 1.2 Part, 0.06 part of sodium chloride, 0.6 part of defoaming agent, 0.4 part of thickener, 78 parts of water;Wherein, the composite organic acid be aphthenic acids with Tartaric acid is 1:1.6 composition by weight.
Embodiment 6
A kind of environment-protective process replacing hydrochloride derusting, wherein the rust remover for derusting is prepared from the following raw materials in parts by weight: 26 parts of composite organic acid, 9 parts of polymethylacrylic acid, 11 parts of chromic anhydride, 6 parts of nonylphenol polyoxyethylene ether, detergent alkylate sulphur 8 parts of sour sodium, 5 parts of sodium gluconate, triethanolamine 2,2 parts of polyacrylamide, 2 parts of Isosorbide-5-Nitrae-butynediols, sodium chloride 0.07 Part, 0.5 part of antifreezing agent, 0.5 part of solubilizer, 84 parts of water;Wherein, the composite organic acid be aphthenic acids and tartaric acid by weight For 1:1.8 composition.
Embodiment 7
The preparation method of rust remover described in embodiment 1-6 includes the following steps: (1) in parts by weight, first adds 1/2 in a kettle Water, then sequentially add composite organic acid, polymethylacrylic acid, chromic anhydride, glucose while stirring with 120 revs/min of speed Sour sodium, sodium chloride, function additive, and 45 DEG C are heated to, 45min is kept the temperature, is let cool;(2) weight is added into step (1) mixture Triethanolamine, polyacrylamide and the Isosorbide-5-Nitrae-butynediols of number, stirring dissolve it sufficiently;(3) surfactant is added extremely In mixed solution in step (2), remaining 1/2 water is then converted;Start agitating device, 40 revs/min, stir 10 minutes, stand, Up to the rust remover.
Embodiment 8
Experiment is tested for the property to the rust remover of embodiment 1-6, test technology: firstly, rust remover is added in derusting slot, and The steel and iron parts for needing to clean are immersed in rust remover, microwave is opened, processing of rust removing is carried out under the radiation of microwave;It then, will be upper The steel and iron parts for stating processing of rust removing propose to be immersed in again in the clear water rinsed in sink from derusting slot to be rinsed, after rinsing Steel and iron parts are proposed just to complete to derust out of rinsing sink.The microwave irradiation uses microwave generator 1250MHz, irradiation time It is 150 seconds.
Its test result is as follows table 1:
Rusty stain clearance rate (%) It derusts time (s) Influence to steel and iron parts surface
Embodiment 1 96.3 185 Any surface finish, no influence
Embodiment 2 97.2 190 Any surface finish, no influence
Embodiment 3 95.5 180 Any surface finish, no influence
Embodiment 4 96.8 195 Any surface finish, no influence
Embodiment 5 94.7 200 Any surface finish, no influence
Embodiment 6 95.3 175 Any surface finish, no influence
Rust remover derusting performance as can be seen from Table 1 prepared by the present invention is very excellent, and the derusting time is very short, derusts simultaneously Rate is very high, effectively restores metal base surface gloss, great application prospect.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention, although Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features.It is all Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention Within the scope of.

Claims (3)

1. it is a kind of replace hydrochloride derusting rust remover, which is characterized in that the rust remover by following parts by weight raw material system At: 25 parts of composite organic acid, 8 parts of polymethylacrylic acid, 9 parts of chromic anhydride, 15 parts of surfactant, 5 parts of sodium gluconate, three 2 parts of ethanol amine, 2 parts of polyacrylamide, 1.5 parts of Isosorbide-5-Nitrae-butynediols, 0.06 part of sodium chloride, 0.5~2 part of function additive, water 80 parts;Wherein, the composite organic acid is aphthenic acids and tartaric acid is 1:1.5 composition by weight, and the pH of the rust remover is 6.0 left and right;
The preparation method of the rust remover includes the following steps: (1) in parts by weight, first adds 1/2 water in a kettle, then Composite organic acid, polymethylacrylic acid, chromic anhydride, sodium gluconate, chlorination are sequentially added while stirring with 120 revs/min of speed Sodium, function additive, and 40~50 DEG C are heated to, 45min is kept the temperature, is let cool;(2) parts by weight are added into step (1) mixture Triethanolamine, polyacrylamide and Isosorbide-5-Nitrae-butynediols, stirring dissolve it sufficiently;(3) surfactant is added to step (2) in the mixed solution in, remaining 1/2 water is then converted;Start agitating device, 40 revs/min, stir 10 minutes, stand to get The rust remover.
2. rust remover according to claim 1, which is characterized in that the surfactant is nonionic surface active agent It is compounded with anionic surfactant, the nonionic surface active agent is fatty alcohol polyoxyethylene ether, dosage It is 10 parts;The anionic surfactant is neopelex, and dosage is 5 parts.
3. rust remover according to claim 1, which is characterized in that the function additive is 0.4 part of solubilizer, thickener 0.4 part.
CN201910036380.7A 2016-10-13 2016-10-13 Rust remover replacing hydrochloric acid for rust removal Active CN109504975B (en)

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CN114086193A (en) * 2021-11-12 2022-02-25 广东财领头新材料有限公司 Rust-removing material and preparation method and application thereof
CN114196962A (en) * 2021-10-29 2022-03-18 浙江众为环保材料有限公司 Neutral rust removing liquid and rust removing method

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CN108315101A (en) * 2018-02-07 2018-07-24 合肥安力电力工程有限公司 A kind of pipeline cleaning agent and preparation method thereof
CN109825838A (en) * 2019-04-10 2019-05-31 上海福岛新材料科技有限公司 A kind of high cleanliness metal cleaner and the method prolonged its service life
CN114669614A (en) * 2022-03-15 2022-06-28 浙江威迩钠科技有限公司 High-strength steel wire drawing process with excellent drawing property

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CN114196962A (en) * 2021-10-29 2022-03-18 浙江众为环保材料有限公司 Neutral rust removing liquid and rust removing method
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CN114086193A (en) * 2021-11-12 2022-02-25 广东财领头新材料有限公司 Rust-removing material and preparation method and application thereof

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Pledgee: Postal Savings Bank of China Limited Zhuji sub branch

Pledgor: Zhuji Huarui chemical fiber factory

Registration number: Y2022980012040