CN109440119A - Degreasing agent and preparation method thereof for the cleaning of steel surface greasy dirt - Google Patents
Degreasing agent and preparation method thereof for the cleaning of steel surface greasy dirt Download PDFInfo
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- CN109440119A CN109440119A CN201811555279.4A CN201811555279A CN109440119A CN 109440119 A CN109440119 A CN 109440119A CN 201811555279 A CN201811555279 A CN 201811555279A CN 109440119 A CN109440119 A CN 109440119A
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- cleaning
- greasy dirt
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- degreasing agent
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- C—CHEMISTRY; METALLURGY
- C23—COATING 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
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- 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 invention discloses a kind of degreasing agents and preparation method thereof for the cleaning of steel surface greasy dirt, and be added has medicament in water；The weight percent of the medicament matches are as follows: alpha-olefin sodium sulfonate 13.5%~15.5%, fatty alcohol polyoxyethylene ether 14.5%~16.5%, five sodium 22%~24% of phosphoric acid, carboxymethyl cellulose 1%~2%, sodium sulphate 24%~26%, potassium hydroxide 15%~16%, sodium metasilicate 4.5%~5.5%.This degreasing agent is compounded using AEO with AOS, and the high-effective cleansing effect that can have been obtained, degreases and other inorganic impurity effects are good.This degreasing agent is efficient to cleaning steel plate effect, adapts to the requirement that modern Painting Shop quickly produces；Without chromium, nitrite etc., no intense stimulus smell, each ingredient toxicity is low, environmentally protective, can be widely applied to the cleaning of steel surface greasy dirt.
Description
Technical field
The present invention relates to a kind of cleaning agent of steel plate, it is especially a kind of for steel surface greasy dirt cleaning degreasing agent and its
Preparation method.
Background technique
In order to guarantee automotive paints quality, before body of a motor car carries out coating, phosphatization surface treatment is carried out to body of a motor car.
And the steel plate of steel mill's production has certain corrosion resistance to guarantee it using preceding, often in surface of steel plate oiling.Substrate surface
Residual greasy dirt can seriously affect the formation of phosphating coat, or even cannot form a film, and make the corrosion resistance and later period electrodeposited paint film of phosphating coat
Adhesion property be deteriorated, influence the dicoration of coating, coating removing easy to foaming.It is quickly produced to meet Painting Shop simultaneously
It is required that a kind of efficient degreasing agent, which carries out cleaning to surface of steel plate greasy dirt, to be particularly important.
Traditional degreasing agent mainly has following several classes: (1) organic solvent, such as n,N-Dimethylformamide (DMF), dimethyl
Acetamide (DMAc), polyoxyethylene octane alkylphenol ether etc., these organic solvents are good to the cleaning effect of soluble greasy dirt, but difficult
To remove inorganic particle, metallic particles etc., and general volatility is stronger, there is stronger penetrating odor, not degradable, toxic
Nocuousness, it is very harmful to people, it is unfavorable for site work environment.(2) lye, such as sodium hydroxide, tertiary sodium phosphate, sodium metasilicate,
By saponification come degreasing, therefore to the poor processing effect of non-saponified grease, basicity controls improper, Ke Nengzao in use process
At corrosion, Painting Shop continuous production is seriously affected；And tertiary sodium phosphate can seriously damage mucous membrane, the upper respiratory tract,
Eyes and skin.(3) emulsion, can remove the various greasy dirts of metal surface, and cleaning effect is good；But general stability is poor,
It can not store for a long time, need when use to be stirred to keep dispersibility, cause inconvenient for use, improve cost.
Summary of the invention
It is clear for steel surface greasy dirt that the technical problem to be solved in the present invention is to provide a kind of cleaning effects is good, toxicity is low
The degreasing agent washed；The present invention also provides a kind of preparation methods of degreasing agent for the cleaning of steel surface greasy dirt.
In order to solve the above technical problems, the technical solution used in the present invention is: it is added in water medicament；The medicine
The weight percent of agent matches are as follows: alpha-olefin sodium sulfonate 13.5%~15.5%, fatty alcohol polyoxyethylene ether 14.5%~16.5%, phosphoric acid
Five sodium 22%~24%, carboxymethyl cellulose 1%~2%, sodium sulphate 24%~26%, potassium hydroxide 15%~16%, sodium metasilicate 4.5%~
5.5%。
The medicament total amount being added in every liter of water of the present invention is 20~40g.
Ingredient mechanism of the invention are as follows: AOS(alpha-olefin sodium sulfonate) there is good detergency, especially also shown in hard water
The characteristics of detergency does not reduce substantially out.The AOS for being C14~C16 preferably with deliquescent, carbon number distribution.
Automobile Plate main engine plants through overmolding, be welded after, white vehicle of the different automobile factorys due to normative different, after being welded
Body surface can inevitably be stained with some dusts, although white body immerses Painting Shop, some Painting Shops will do it pre- soup, originally scald,
But it is not avoided that white body surface can remain the inorganic impurities such as some dusts.Nonionic surfactant such as aliphatic alcohol polyethenoxy
Ether is then best suited for washing dust, while AEO(fatty alcohol polyoxyethylene ether) clean effect that could have been obtained is compounded with AOS,
This is because AOS has good clean effect to grease soils and oiliness and powdery dirt.Meanwhile the ehter bond in AEO molecule
It is not easy to be destroyed by acid, alkali, high stability, water-soluble preferable, electrolyte-resistant is readily biodegradable, and foam is small.And AEO pairs
Hard water is insensitive, and cold washing performance is good.AEO is for liquid greasy dirt, mainly by the infiltration and emulsification of surfactant.Liquid
Body greasy dirt is usually the thin oil film sprawled in metal surface, and AEO is penetrated between surface and oil film, emulsification soaked to greasy dirt and
It splits away off.
Five sodium of STPP(phosphoric acid, sodium tripolyphosphate) can be with softened water, therefore STPP softened water can be added in aqueous solution,
It can prevent other ingredients and original calcium and magnesium plasma reaction in water in degreasing agent.STPP also acts as " surface in washing process
The effect of activity ", such as it plays promotion emulsification to lipoid material, and it is centainly alkaline to be able to maintain cleaning solution.
CMC(carboxymethyl cellulose) impurity such as dust and greasy dirt can be suitably dispersed in cleaning solution, it is not returned to
Fabric surface.Its principle is that CMC is bulky, prevents with negative electrical charge due to steric effect and electrostatic interaction after absorption
The impurity such as dust and greasy dirt are redeposited.Can not ignore it simultaneously can be surrounded dirt particles, make it stable and be scattered in degreasing
In agent.CMC is soluble easily in water simultaneously, and solution is transparent, very stable in alkaline solution, can be stable in the presence of in degreaser.
Na2SO4(sodium sulphate) can reduce CMC viscosity, favorably degrease, adjustable product apparent density, improve degreasing agent
Mobility prevents from agglomerating.Grease and potassium hydroxide effect generate soluble soaps and glycerol, this saponification and can remove
Animal and plant oils.There is sodium metasilicate emulsification grease is become tiny under the action of the soaps of generation and other auxiliary agents
Grain is emulsified, dispersion is solubilized into micella.Sodium metasilicate also has the function of corrosion inhibiter simultaneously, effect be metal surface anode region with
Ionization out is dissolved in metal surface, generates a kind of silicate films and is covered on anode and forms protective film, thus inhibits
Metal is dissolved into water.Anode reaction is controlled, and anode is passivated.
The method of the present invention are as follows: first heat the water of water inventory 70%~90%；Five sodium of phosphoric acid and carboxylic that will be pre-mixed again
Methylcellulose is added to the water, stirring and dissolving；Then alpha-olefin sodium sulfonate, fatty alcohol polyoxyethylene ether, sodium sulphate, hydrogen is added
Potassium oxide and sodium metasilicate, stirring and dissolving；Finally the water of surplus is added, is stirred evenly.
Water described in the method for the present invention is heated to 30~40 DEG C.
The beneficial effects of adopting the technical scheme are that the present invention is compounded using AEO with AOS, can obtain
High-effective cleansing effect, degrease and other inorganic impurity effects be good.The irritation of traditional surfactant LAS compared with
Greatly, AOS resistance to hard water is relatively better than LAS in the present invention, and AOS irritation is low, and toxicity ratio LAS is low, and biological degradability is good；STPP
The effect of " surface-active " can be played, and it is centainly alkaline to be able to maintain cleaning solution with softened water；CMC is in attracting dust and greasy dirt etc.
After impurity, due to steric effect and electrostatic interaction, it can effectively prevent impurity redeposited；Sodium sulphate can improve degreasing agent flowing
Property, it prevents from agglomerating, conducive to degreasing；Grease can be become tiny emulsification grain by sodium metasilicate under certain condition, dispersion solubilising into
Micella, while also having the function of corrosion inhibiter, it can protect steel plate and avoid corroding.
The present invention is efficient to cleaning steel plate effect, adapts to the requirement that modern Painting Shop quickly produces；Without chromium, nitrous
Hydrochlorate etc., no intense stimulus smell, each ingredient toxicity is low, environmentally protective, can be widely applied to the cleaning of steel surface greasy dirt.
Specific embodiment
The present invention will be further described in detail with reference to the specific embodiments.
Embodiment 1-8: this uses following with when preparation method for the degreasing agent of steel surface greasy dirt cleaning.
(1) component proportion: the medicament total amount being added in every liter of desalted water is 20~40g；The weight percent of medicament matches
Are as follows: AOS 13.5%~15.5%, AEO 14.5%~16.5%, STPP 22%~24%, CMC 1%~2%, Na2SO424%~26%,
KOH(potassium hydroxide) 15%~16%, Na2SiO3(sodium metasilicate) 4.5%~5.5%；Wherein, the carbon number distribution of AOS is C14~C16；
The degree of substitution of CMC is 0.4~0.8.The content of component is shown in Table 1 in each embodiment.
Table 1: the constituent content of each embodiment
(2) it preparation method: is prepared by proportion described in step (1).Weigh first (measurement) desalted water total volume 70%~
90% desalted water is heated to 30~40 DEG C, heat preservation；STPP and CMC are pre-mixed again, are added in above-mentioned desalted water, is turned
130~150r/min of speed stirs 15~20min；Then AOS, AEO, Na is added2SO4, KOH and Na2SiO3, revolving speed 130~
150r/min stirs 15~20min；Finally the desalted water of surplus is added, revolving speed be 130~150r/min stirring 2~
The degreasing agent can be obtained in 3min.The concrete technology of each embodiment is shown in Table 2.
Table 2: the concrete technology of each embodiment
(3) cleaning method: the Automobile Plate that will be cleaned is embathed in degreasing agent, cleans 1.5~2.5min, with de- after embathing
Salt water room temperature 1.5~2.5min of washed samples, can clean up the surface and oil contaminant of Automobile Plate.The cleaning process of each embodiment with
And wash result is shown in Table 3.
Table 3: the cleaning process and result of each embodiment
The calculation method of degreasing rate in table 3 are as follows: oil before degreasing rate=(greasy dirt weight after greasy dirt weight-cleaning before cleaning) ÷ cleaning
Dirty weight × 100%.
Greasy dirt quality testing be using portable oil film calibrator detected, model Kurabo NR-2100,
Instrument is building line using first 5 points first, then carries out oily re-detection to specimen surface, greasy dirt area is obtained after data processing.
Specimen surface moisture coating ratio can be used gridding method and be detected, specific practice are as follows: degreasing agent clean plate seed oil
After dirt, using desalted water washed samples, then sample is placed on a platform, preprepared grid paper is placed in sample
Surface can substantially draw grease line of demarcation, and the profile of grid paper shared by entire sample, permeate grid by greasy dirt by counting
Total grid number shared by paper, then, and total grid number × 100% of the grid number ÷=specimen surface greasy dirt percentage of coverage m permeated by greasy dirt,
Then specimen surface moisture percentage of coverage n=1-m.
(4) the action and effect analysis cleaned: comparative examples 1 and embodiment 2, AOS and AEO are deoiling in effect, AOS
Account for main function.This is because fatty alcohol polyoxyethylene ether (AEO) is suitable for washing dust, and AOS is to grease soils and oiliness
And powdery dirt has good clean effect.
Comparative examples 2 and embodiment 3, auxiliary agent, which acts on removal to greasy dirt, influences the less change of formula, especially phosphoric acid
The variation large range of each other of five sodium, carboxymethyl cellulose, sodium metasilicate, but final cleaning effect there is no variation,
It can thus be appreciated that when adjuvant component changes in a big way in this degreasing agent prescription shadow will not be brought to the using effect of degreasing agent
It rings.
Comparative examples 2 and embodiment 4, embathing length of time can affect to degreasing area, but influence
Less, embathe that the time is long, and degreasing result is preferable.
Comparative examples 4 and embodiment 5, embathe that temperature is low, and oily waste degradation area is opposite is reduced, but embathe temperature to removal
Greasy dirt area effect is little.
In conclusion surface of steel plate residue is small from table 3 it can be seen that the cleaning efficiency of this degreasing agent is up to 99% or more
In 6mg/m2, estimate ratio >=96% that surface of steel plate moisture area coverage accounts for entire plate face；Its cleaning performance is excellent, adapts to
The automobile coating production line of fast speed effectively prevent surface of steel plate to clean sordid problem.
Claims (4)
1. a kind of degreasing agent for the cleaning of steel surface greasy dirt, it is characterised in that: it is added in water medicament；The medicament
Weight percent proportion are as follows: alpha-olefin sodium sulfonate 13.5%~15.5%, fatty alcohol polyoxyethylene ether 14.5%~16.5%, phosphoric acid five
Sodium 22%~24%, carboxymethyl cellulose 1%~2%, sodium sulphate 24%~26%, potassium hydroxide 15%~16%, sodium metasilicate 4.5%~
5.5%。
2. the degreasing agent according to claim 1 for the cleaning of steel surface greasy dirt, it is characterised in that: in every liter of water
The medicament total amount of addition is 20~40g.
3. the preparation method of the degreasing agent as claimed in claim 1 or 2 for the cleaning of steel surface greasy dirt, it is characterised in that: first will
The water of water inventory 70%~90% heats；Five sodium of phosphoric acid and carboxymethyl cellulose that have been pre-mixed are added to the water again, stirred
Dissolution；Then alpha-olefin sodium sulfonate, fatty alcohol polyoxyethylene ether, sodium sulphate, potassium hydroxide and sodium metasilicate, stirring and dissolving is added；
Finally the water of surplus is added, is stirred evenly.
4. the preparation method described in claim 3 for the degreasing agent of steel surface greasy dirt cleaning, it is characterised in that: the water adds
Heat is to 30~40 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811555279.4A CN109440119B (en) | 2018-12-19 | 2018-12-19 | Degreasing agent for cleaning oil stains on steel surface and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811555279.4A CN109440119B (en) | 2018-12-19 | 2018-12-19 | Degreasing agent for cleaning oil stains on steel surface and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109440119A true CN109440119A (en) | 2019-03-08 |
| CN109440119B CN109440119B (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811555279.4A Active CN109440119B (en) | 2018-12-19 | 2018-12-19 | Degreasing agent for cleaning oil stains on steel surface and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116240553A (en) * | 2022-12-28 | 2023-06-09 | 建新赵氏科技股份有限公司 | Zinc alloy part cleaning agent |
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| CN109440119B (en) | 2021-04-02 |
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