CN105018947B - Environmentally friendly rust-removing agent for iron and steel and preparation method thereof - Google Patents
Environmentally friendly rust-removing agent for iron and steel and preparation method thereof Download PDFInfo
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- CN105018947B CN105018947B CN201510427648.1A CN201510427648A CN105018947B CN 105018947 B CN105018947 B CN 105018947B CN 201510427648 A CN201510427648 A CN 201510427648A CN 105018947 B CN105018947 B CN 105018947B
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Abstract
Environmentally friendly rust-removing agent for iron and steel and preparation method thereof, it belongs to rust-removing agent for iron and steel field.Exist the invention solves existing steel derusting and easily return the technical problems such as rust, derusting time length, pollution environment, cost height.Rust remover of the present invention is made of citric acid, oxalic acid, phosphoric acid, sodium alkyl benzene sulfonate, emulsifying agent, corrosion inhibiter and deionized water or is made of citric acid, oxalic acid, phosphoric acid, sodium alkyl benzene sulfonate, emulsifying agent, corrosion inhibiter, antifreezing agent and deionized water；Preparation method is completed by operation：First add 1/2 water in a kettle, phosphoric acid, citric acid, oxalic acid, sodium alkyl benzene sulfonate, corrosion inhibiter and emulsifying agent (or phosphoric acid, citric acid, oxalic acid, sodium alkyl benzene sulfonate, corrosion inhibiter, antifreezing agent and emulsifying agent) are sequentially added while stirring with 100~150 revs/min of speed, the water of surplus is added, is at the uniform velocity stirred to being completely dissolved.The present invention is used for steel derusting.
Description
Technical field
The invention belongs to rust-removing agent for iron and steel field.
Background technology
China's rate of industrial development is swift and violent at this stage, and steel usage amount increases year by year in each field, during steel derusting
Caused by air and environmental pollution getting worse.
Existing steel derusting method has sandblasting, mechanical grinding, mechanical grinding, rust remover.
Sandblasting：Of high cost using sand-blasting machine, investment is big, consuming electric power, there is noise, the powder pollution air of ejection.
Mechanical grinding：Using electromechanical equipment, derusting effect is poor, with the presence of dead angle (equipment handle less than corner), makes an uproar
Sound, there is pollution.
Strong acid derusts：There is acid gas mist, be also easy to produce haze, pollute air and environment, have to human skin and respiratory system
High risks；Processing time is long, and iron and steel parts can be integrated with corroding, and changes workpiece size, easily returns rust.
Existing rust remover：Derust time length, and efficiency is low, and counterweight rust and oxide skin processing are undesirable.
The content of the invention
There is the easy technologies such as rust, derusting time length, pollution environment, cost height of returning the invention solves existing steel derusting to ask
Topic；And provide environmentally friendly rust-removing agent for iron and steel and preparation method thereof.
In order to solve the above technical problems, the environmentally friendly rust-removing agent for iron and steel of the present invention is by 17%~25% lemon by weight percentage
Lemon acid, 0.5%~10% oxalic acid, 15%~45% phosphoric acid, 0.5%~2% sodium alkyl benzene sulfonate, 0.5%~4% emulsifying agent,
The deionized water of 3.5%~5.5% corrosion inhibiter and surplus forms；Its preparation method is completed by operation：In a kettle first
Add 1/2 water, with 100~150 revs/min of speed sequentially add while stirring phosphoric acid, citric acid, oxalic acid, sodium alkyl benzene sulfonate,
Corrosion inhibiter and emulsifying agent, add the water of surplus, at the uniform velocity stir to being completely dissolved.
In order to solve the above technical problems, the environmentally friendly rust-removing agent for iron and steel of the present invention by weight percentage can also be by 17%~25%
Citric acid, 0.5%~10% oxalic acid, 15%~45% phosphoric acid, 0.5%~2% sodium alkyl benzene sulfonate, 0.5%~4% emulsification
Agent, 3.5%~5.5% corrosion inhibiter, the deionized water composition of 5%~30% antifreezing agent and surplus；Its preparation method is by operation
Complete：First add 1/2 water in a kettle, phosphoric acid, lemon are sequentially added while stirring with 100~150 revs/min of speed
Acid, oxalic acid, sodium alkyl benzene sulfonate, corrosion inhibiter, antifreezing agent and emulsifying agent, add the water of surplus, at the uniform velocity stir to completely molten
Solution.The product does not change character under -10~-35 DEG C of environment, can normal use, effect is constant.Winter north outdoor temperature zero
Lower more than 30 degree, existing rust remover, which can freeze to be frozen into, to stick together, and can not use.
Wherein；The antifreezing agent is ethanol, isopropanol or glycerine；Prevent solution freezed in winter, accelerate solution in part
The volatilization on surface.
Above-mentioned emulsifying agent is NP-10 or AEO-9；There is cleaning, degreaser emulsion.
Above-mentioned corrosion inhibiter is urea, EDTA or hexamethylenetetramine；Slow down solution to the not upper rust part of piece surface
Corrosion.
The rust remover of the present invention is easy to use, can spray, soaks, wipes or brush, and no dust produces, noiseless, is set without machinery
It is standby and easy to operate.
The rust remover of the present invention has no irritating odor, nontoxic, does not pollute air, will not produce haze, zero-emission, does not pollute
Environment, the especially not damaged of the skin to human body and respiratory system.
Present invention investment is small, and does not consume the energy (electric energy), saves the energy.
If the present invention can soak derusting, no dead angle, has prevented the pollution of mechanical grinding noise and powder.
The derusting speed of the present invention is fast, floats rust hand and wipes, normal corrosion immersion 3~5 minutes, again rust band oxide skin
Handle as 30~60 minutes.
The dosage of corrosion inhibiter and emulsifying agent of the present invention is moderate, does not damage unrusted part its surface, and can play clear
Remove rust oil removing effect；Steel piece surface cleaning after processing is smooth, does not return rust；It need not be washed through the processed steel part of this product,
It can keep not returning rust in more than 1 year after subsequent processing drying can be directly entered after doing solid work.
The method of the present invention is easy to operate, and the product non-foam, equal without caking, quality that method using the present invention obtains
Even
Embodiment
Embodiment one：In present embodiment environmentally friendly rust-removing agent for iron and steel be by weight percentage by 20% citric acid,
5% oxalic acid, 30% phosphoric acid, 1.0% sodium alkyl benzene sulfonate, 2% emulsifying agent NP-10, the deionized water group of 4.5% urea and surplus
Into；Its preparation method is completed by operation：In a kettle first plus 1/2 water, with 120 revs/min of speed while stirring according to
Secondary addition phosphoric acid, citric acid, oxalic acid, sodium alkyl benzene sulfonate, corrosion inhibiter and emulsifying agent, add the water of surplus, at the uniform velocity stir
To being completely dissolved.
Present embodiment environmental protection rust-removing agent for iron and steel property such as following table
Table 1
| Appearance | Colourless or weak yellow liquid |
| Boiling point | 102℃ |
| Proportion (25 DEG C) | 1.1~1.2 |
| PH value | 1.5~2.5 |
| Viscosity (25 DEG C) | 15s |
Embodiment two：In present embodiment environmentally friendly rust-removing agent for iron and steel be by weight percentage by 17% citric acid,
1% oxalic acid, 40% phosphoric acid, 1.5% sodium alkyl benzene sulfonate, the deionized water group of 1% emulsifying agent AEO-9,5.0%EDTA and surplus
Into.
The preparation method of present embodiment is identical with embodiment one.
Present embodiment environmental protection rust-removing agent for iron and steel property such as following table
Table 2
| Appearance | Colourless or weak yellow liquid |
| Boiling point | 103℃ |
| Proportion (25 DEG C) | 1.1~1.2 |
| PH value | 1.5~2.5 |
| Viscosity (25 DEG C) | 15s |
Embodiment three：In present embodiment environmentally friendly rust-removing agent for iron and steel be by weight percentage by 25% citric acid,
8% oxalic acid, 20% phosphoric acid, 0.8% sodium alkyl benzene sulfonate, 3% emulsifying agent AEO-9,1.0% hexamethylenetetramine and surplus are gone
Ionized water forms.
The preparation method of present embodiment is identical with embodiment one.
Present embodiment environmental protection rust-removing agent for iron and steel property such as following table
Table 3
| Appearance | Colourless or weak yellow liquid |
| Boiling point | 101℃ |
| Proportion (25 DEG C) | 1.05~1.15 |
| PH value | 1.5~2.5 |
| Viscosity (25 DEG C) | 14s |
Embodiment four：In present embodiment environmentally friendly rust-removing agent for iron and steel be by weight percentage by 20% citric acid,
5% oxalic acid, 30% phosphoric acid, 1.0% sodium alkyl benzene sulfonate, 2% emulsifying agent NP-10,4.5% urea, 15% ethanol and surplus
Deionized water forms；Its preparation method is completed by operation：First add 1/2 water in a kettle, with 120 revs/min of speed
Phosphoric acid, citric acid, oxalic acid, sodium alkyl benzene sulfonate, corrosion inhibiter, antifreezing agent and emulsifying agent are sequentially added while stirring, are added surplus
The water of surplus, is at the uniform velocity stirred to being completely dissolved.
Present embodiment environmental protection rust-removing agent for iron and steel property such as following table
Table 4
| Appearance | Colourless or weak yellow liquid |
| Boiling point | 101℃ |
| Proportion (25 DEG C) | 1.05~1.1 |
| PH value | 1.5~2.5 |
| Viscosity (25 DEG C) | 14s |
Embodiment five：In present embodiment environmentally friendly rust-removing agent for iron and steel be by weight percentage by 17% citric acid,
1% oxalic acid, 40% phosphoric acid, 1.5% sodium alkyl benzene sulfonate, 1% emulsifying agent AEO-9,5.0%EDTA, 10% glycerine and surplus
Deionized water composition.
The preparation method of present embodiment is identical with embodiment one.
Present embodiment environmental protection rust-removing agent for iron and steel property such as following table
Table 5
| Appearance | Colourless or weak yellow liquid |
| Boiling point | 103℃ |
| Proportion (25 DEG C) | 1.1~1.2 |
| PH value | 1.5~2.5 |
| Viscosity (25 DEG C) | 15s |
Embodiment six：In present embodiment environmentally friendly rust-removing agent for iron and steel be by weight percentage by 25% citric acid,
8% oxalic acid, 20% phosphoric acid, 0.8% sodium alkyl benzene sulfonate, 3% emulsifying agent AEO-9,1.0% hexamethylenetetramine, 20% isopropyl
The deionized water of alcohol and surplus forms.
The preparation method of present embodiment is identical with embodiment one.
Present embodiment environmental protection rust-removing agent for iron and steel property such as following table
Table 6
| Appearance | Colourless or weak yellow liquid |
| Boiling point | 101℃ |
| Proportion (25 DEG C) | 1.05~1.1 |
| PH value | 1.5~2.5 |
| Viscosity (25 DEG C) | 14s |
Using following verification experimental verification invention effects
It is divided into experimental group and control group, it is specific as follows
The discarded part that will get rusty is randomly divided into 1 group of experiment, 2 groups of experiment, 3 groups of experiment, 4 groups of experiment, 5 groups of experiment, 6 groups of experiment
And control group, part number of packages contained by every group are 65, part attach most importance to rust band oxide skin, respectively with embodiment one,
2nd, three, four, five, six rust remover and Ruhof rust removers are handled.
Part is soaked respectively with rust remover, observing derusting effect respectively.90minde is soaked in rust remover by above-mentioned
Part takes out, and is placed after doing solid work and returns rust situation and rust remover to rustless stem-winder with observation part after derusting in clean container
The influence in face.
Derust rust remover derusting effect observation, when soaking 30min, 1 group of experiment, 2 groups of experiment, 3 groups of experiment, experiment 4
Group, 5 groups of experiment, the derusting ability of rust remover displays used in 6 groups of experiment, and every group has a small number of parts still to have a little iron mold mark
Outside (be no more than 5), derusting all comes off, and be soaked in control group rust remover has 45 parts to have rust rusty stain；Work as leaching
Steep 60min when, experiment 1 group, experiment 2 groups, experiment 3 groups, experiment 4 groups, experiment 5 groups, experiment 6 groups used in rust remover immersion part rust
Mark is all dispelled, and control group rust remover still has 25 parts to have rusty stain, still has 12 when soaking control group rust remover 90min
Part has a little rusty stain, and as 120min, control group rust remover is invaded bubble part and all dispelled.
Part returns the evaluation of rust situation after derusting, is become according to accessory appearance and is turned into following evaluation：0 grade：Surface is rustless, without obvious
Change.1 grade：Surface is rustless, light discolouration or tarnishes.2 grades：Surface is slight rusty stain or uneven discoloration.3 grades：Surface is big
Area corrosion.As a result it is as shown in the table
Table 7:Different rust removers return rust situation (level) after derusting to part in different time
As shown in Table 7, rust remover of the present invention is not susceptible to return rust phenomenon.
Claims (8)
1. environmentally friendly rust-removing agent for iron and steel, it is characterised in that environmentally friendly rust-removing agent for iron and steel is by 17%~25% lemon by weight percentage
Acid, 0.5%~10% oxalic acid, 15%~45% phosphoric acid, 0.5%~2% sodium alkyl benzene sulfonate, 0.5%~4% emulsifying agent,
The deionized water of 3.5%~5.5% corrosion inhibiter and surplus forms；The corrosion inhibiter is urea, EDTA or hexamethylenetetramine, institute
It is emulsifying agent NP-10 or emulsifying agent AEO-9 to state emulsifying agent, and the steel piece surface cleaning after processing is smooth, does not return rust.
2. environmentally friendly rust-removing agent for iron and steel according to claim 1, it is characterised in that environmentally friendly rust-removing agent for iron and steel is by weight percentage
By 18%~22% citric acid, 1%~8% oxalic acid, 20%~40% phosphoric acid, 0.8%~1.5% sodium alkyl benzene sulfonate, 1%~
The deionized water composition of 3% emulsifying agent, 4.0%~5.0% corrosion inhibiter and surplus.
3. environmentally friendly rust-removing agent for iron and steel according to claim 1, it is characterised in that environmentally friendly rust-removing agent for iron and steel is by weight percentage
By 20% citric acid, 5% oxalic acid, 30% phosphoric acid, 1.0% sodium alkyl benzene sulfonate, 2% emulsifying agent, 4.5% corrosion inhibiter and surplus
Deionized water forms.
4. the preparation method of environmental protection rust-removing agent for iron and steel as claimed in claim 1, it is characterised in that the preparation of environmentally friendly rust-removing agent for iron and steel
Method is completed by operation：
First add 1/2 water in a kettle, phosphoric acid, citric acid, grass are sequentially added while stirring with 100~150 revs/min of speed
Acid, sodium alkyl benzene sulfonate, corrosion inhibiter and emulsifying agent, add the water of surplus, at the uniform velocity stir to being completely dissolved.
5. environmentally friendly rust-removing agent for iron and steel, it is characterised in that environmentally friendly rust-removing agent for iron and steel is by 17%~25% lemon by weight percentage
Acid, 0.5%~10% oxalic acid, 15%~45% phosphoric acid, 0.5%~2% sodium alkyl benzene sulfonate, 0.5%~4% emulsifying agent,
The deionized water composition of 3.5%~5.5% corrosion inhibiter, 5%~30% antifreezing agent and surplus.
6. environmentally friendly rust-removing agent for iron and steel according to claim 5, it is characterised in that antifreezing agent is ethanol, isopropanol or glycerine.
7. environmentally friendly rust-removing agent for iron and steel according to claim 5, it is characterised in that the emulsifying agent is emulsifying agent NP-10 or emulsification
Agent AEO-9；Corrosion inhibiter is urea, EDTA or hexamethylenetetramine.
8. the preparation method of environmental protection rust-removing agent for iron and steel as claimed in claim 5, it is characterised in that the environmental protection rust-removing agent for iron and steel
Preparation method is completed by operation：
First add 1/2 water in a kettle, phosphoric acid, citric acid, grass are sequentially added while stirring with 100~150 revs/min of speed
Acid, sodium alkyl benzene sulfonate, corrosion inhibiter, antifreezing agent and emulsifying agent, add the water of surplus, at the uniform velocity stir to being completely dissolved.
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| CN105297041B (en) * | 2015-12-02 | 2017-11-17 | 马鞍山市三江机械有限公司 | A kind of efficiently quick derusting antirust solution and preparation method thereof |
| CN106958026A (en) * | 2017-05-04 | 2017-07-18 | 中国第汽车股份有限公司 | A kind of neutral rust remover that can be used under cryogenic conditions |
| CN107723716A (en) * | 2017-10-17 | 2018-02-23 | 黄彬彬 | A kind of preparation method of rust remover |
| CN108166004A (en) * | 2017-12-27 | 2018-06-15 | 季路晨 | A kind of Environment-friendlyrust rust inhibitor preparation method |
| CN107881512A (en) * | 2017-12-27 | 2018-04-06 | 季路晨 | A kind of Environment-friendlyrust rust inhibitor |
| CN109666941A (en) * | 2019-01-18 | 2019-04-23 | 江苏久华环保科技股份有限公司 | A kind of environment-friendly type steel derusting and cleaning agent |
| CN109763130A (en) * | 2019-02-20 | 2019-05-17 | 广东安绿美新材料科技有限公司 | A kind of production method of hardware surface treating agent |
| CN112981426A (en) * | 2021-02-04 | 2021-06-18 | 上海神洁环保科技股份有限公司 | Multipurpose rust remover and treatment method |
| CN115261872A (en) * | 2021-04-29 | 2022-11-01 | 上海丽卡环保技术有限公司 | Rust remover for steel parts and preparation method thereof |
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