CN109594069A - A kind of film agent and its preparation and application - Google Patents
A kind of film agent and its preparation and application Download PDFInfo
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- CN109594069A CN109594069A CN201811635101.0A CN201811635101A CN109594069A CN 109594069 A CN109594069 A CN 109594069A CN 201811635101 A CN201811635101 A CN 201811635101A CN 109594069 A CN109594069 A CN 109594069A
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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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/362—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing also zinc cations
Abstract
The present invention provides a kind of film agents, are prepared by the component for including following weight percentage: phosphate 10~15%, nitrate 10~15%, zinc oxide 8~15%, citric acid 8~15%, sodium fluoride 7~10%, soda ash 7~10%, excess water.The present invention also provides the preparation method of film agent and application methods.Film agent provided by the invention film on metal material surface is fast, and form a film uniform and smooth, and stability is good, and the metal material corrosion resistance after upper film is strong, and film agent preparation and application provided by the invention is simple, easy to operate, easily accomplishes scale production.
Description
Technical field
The present invention relates to the technical field of Treatment of Metal Surface, in particular to a kind of film agent and its side of making and using
Method.
Background technique
Metal encounters the atmosphere of humidity or more rugged environment, metal surface is non-in transport, processing and treatment process
Often it is oxidized easily or is corroded, it is totally unfavorable to techniques such as the coatings on subsequent metal surface.Therefore, to the processing of metal surface
It is considerable.
Metal surface treating method multiplicity, wherein the most commonly used mainly chemical treatment method, usually in metal surface
Chemical composition coating is formed, this kind of chemical composition coating not only forms one layer of fine and close chemical films in metal surface, prevents metal surface
Corrosion, can also enhance the adhesive force with coating paint film substrate.
However, existing film agent is generally existing to be not easy upper film or the non-uniform problem of upper film in metal material surface, no
It can guarantee the upper film effect of metal material surface, and then influence the quality of metal product, and cause centainly to pollute to environment.And one
A little for manufacturing the metal materials of furniture, automobile parts, the requirement to its surface treatment quality is higher, and existing film agent is then more
Add and be difficult to completely this high request, can not guarantee the quality of metal product.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of film agent and its preparation and application.The present invention provides
Film agent on metal material surface film it is fast, form a film uniform and smooth, stability is good, and the metal material corrosion resistance after upper film is strong.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of film agents, are prepared by the component for including following weight percentage:
The present invention provides the preparation methods of film agent described in above technical scheme, comprising the following steps:
(1) part water and phosphate are mixed, obtains phosphate aqueous solution；
(2) phosphate aqueous solution and the nitrate mixing obtained the step (1), obtains the first mixed solution；
(3) the first mixed solution that the step (2) obtains is mixed with zinc oxide, obtains the second mixed solution；
(4) the second mixed solution that the step (3) obtains is mixed with citric acid, obtains third mixed solution；
(5) the third mixed solution that the step (4) obtains is mixed with sodium fluoride, obtains the 4th mixed solution；
(6) the 4th mixed solution that the step (5) obtains is mixed with soda ash, obtains the 5th mixed solution；
(7) the 5th mixed solution that the step (6) obtains is mixed with remainder water, gained mixed liquor is epithelium
Agent.
Preferably, the mass ratio of the water in the step (1) and the water in the step (7) is (2~3): 1.
The present invention also provides the preparations of preparation method described in film agent described in above technical scheme or above technical scheme
The application method of film agent, comprising the following steps:
The film agent is diluted with water, dilution is obtained, the metal material after degreasing and rust removal, washing process is soaked
Bubble is in the dilution.
Preferably, the volume content of film agent is 5%~7% in the dilution.
Preferably, the time of the immersion is 5~10min.
Preferably, the total acidity of the dilution is 25~30, and free acidity is 2~3.
Preferably, the metal material includes iron, ferroalloy, aluminium, aluminium alloy, copper, copper alloy, magnesium, magnesium alloy, zinc and zinc
One of alloy.
The present invention provides a kind of film agents, are prepared by the component for including following weight percentage: phosphate 10
~15%, nitrate 10~15%, zinc oxide 8~15%, citric acid 8~15%, sodium fluoride 7~10%, soda ash 7~10%,
Excess water.Film agent provided by the invention film on metal material surface is fast, and form a film uniform and smooth, and stability is good, after upper film
Metal material corrosion resistance is strong.
The present invention also provides the preparation method of film agent and application method, film agent provided by the invention is made and used
Method is simple, easy to operate, easily accomplishes scale production.
Detailed description of the invention
Fig. 1 is treatment effect figure of the film agent to metalwork of the preparation of embodiment 1.
Specific embodiment
The present invention provides a kind of film agents, are prepared by the component for including following weight percentage:
In terms of mass percentage, film agent provided by the invention includes phosphate 10~15%, preferably 10~14%.
In the present invention, phosphate can increase hardness, brightness, corrosion resistance and the dicoration of metal material surface, to meet various
The requirement of specific condition.The present invention does not have special requirement to the phosphatic specific type, using phosphorus well known in the art
Hydrochlorate, such as sodium ascorbyl phosphate, potassium phosphate；The present invention does not have special requirement to the phosphatic source, using city
The phosphate product sold or voluntarily prepared.
In terms of mass percentage, film agent provided by the invention includes nitrate 10~15%, preferably 10~13%.
In the present invention, nitrate can promote film on metal material surface, and keep the film time short, and form a film uniform and smooth.The present invention couple
The specific type of the nitrate does not have special requirement, using nitrate well known in the art, such as nitric acid sodium salt, nitric acid
Sylvite etc.；The present invention does not have special requirement to the source of the nitrate, using nitrate products that are commercially available or voluntarily preparing
?.
In terms of mass percentage, film agent provided by the invention includes zinc oxide 8~15%, preferably 8~13%.?
In the present invention, the wearability of metal surface is can be improved in zinc oxide, effectively increases the service life of metal product.The present invention is to institute
The source for stating zinc oxide does not have special requirement, using zinc oxide product that is commercially available or voluntarily preparing.
In terms of mass percentage, film agent provided by the invention includes citric acid 8~15%, preferably 9~15%.?
In the present invention, citric acid acts on metal material surface, and the inoxidizability of metal surface can be improved and remove the residual of metal surface
Slag.The present invention does not have special requirement to the source of the citric acid, using citric acid product that is commercially available or voluntarily preparing.
In terms of mass percentage, film agent provided by the invention includes sodium fluoride 7~10%, preferably 7~9%.?
In the present invention, sodium fluoride can promote film on metal material surface, and make the uniform and smooth that forms a film, and improve the corrosion-resistant of metal surface
Property.The present invention does not have special requirement to the source of the sodium fluoride, using sodium fluoride product that is commercially available or voluntarily preparing.
In terms of mass percentage, film agent provided by the invention includes soda ash 7~10%, preferably 7~9%.At this
In invention, the quality of metal material surface epithelium is can be improved in soda ash, mitigates the aggressivity of metal material, extends making for metal material
Use the service life.The present invention does not have special requirement to the source of the soda ash, using soda ash product that is commercially available or voluntarily preparing.
In terms of mass percentage, film agent provided by the invention further includes excess water.The present invention is to the water without spy
Other requirement, using water well known in the art.In the specific embodiment of the invention, it is preferred to use pure water.
Film agent provided by the invention film on metal material surface is fast, and form a film uniform and smooth, and stability is good, after upper film
Metal material corrosion resistance is strong.
The present invention provides the preparation methods of film agent described in above technical scheme, comprising the following steps:
(1) part water and phosphate are mixed, obtains phosphate aqueous solution；
(2) phosphate aqueous solution and the nitrate mixing obtained the step (1), obtains the first mixed solution；
(3) the first mixed solution that the step (2) obtains is mixed with zinc oxide, obtains the second mixed solution；
(4) the second mixed solution that the step (3) obtains is mixed with citric acid, obtains third mixed solution；
(5) the third mixed solution that the step (4) obtains is mixed with sodium fluoride, obtains the 4th mixed solution；
(6) the 4th mixed solution that the step (5) obtains is mixed with soda ash, obtains the 5th mixed solution；
(7) the 5th mixed solution that the step (6) obtains is mixed with remainder water, gained mixed liquor is epithelium
Agent.
The present invention mixes part water and phosphate, obtains phosphate aqueous solution.In the present invention, it is preferred to using stirring
The phosphate is added in the water and mixes by mode, and the revolving speed of the stirring is preferably 500~650r/min, the stirring
Time is preferably 30~40min.
After obtaining phosphate aqueous solution, the present invention mixes the phosphate aqueous solution and nitrate, obtains the first mixing
Solution.It mixes, has in the present invention, it is preferred to which the nitrate is added in the phosphate aqueous solution by the way of stirring
Gymnastics is made preferred are as follows: under the revolving speed of 500~650r/min, the nitrate is added in the phosphate aqueous solution, nitre
By rotational speed regulation to 300~500r/min after hydrochlorate addition, continues 40~45min of stirring, obtain the first mixed solution.
After obtaining the first mixed solution, the present invention mixes first mixed solution with zinc oxide, obtains the second mixing
Solution.It is mixed in the present invention, it is preferred to which the zinc oxide is added in first mixed solution by the way of stirring, institute
The revolving speed for stating stirring is preferably 300~500r/min, and the time of the stirring is preferably 30~40min, guarantees that zinc oxide is complete
Dissolution.
After obtaining the second mixed liquor, the present invention mixes second mixed solution with citric acid, and it is molten to obtain third mixing
Liquid.It is mixed in the present invention, it is preferred to which the citric acid is added in second mixed solution by the way of stirring, it is described
The revolving speed of stirring is preferably 300~500r/min, and the time of the stirring is preferably 25~30min.
After obtaining third mixed solution, the present invention mixes the third mixed solution with sodium fluoride, obtains the 4th mixing
Solution.In the present invention, it is preferred to the sodium fluoride be mixed with the third mixed solution by the way of stirring, the stirring
Revolving speed be preferably 300~500r/min, the time of the stirring is preferably 25~30min.
After obtaining the 4th mixed solution, the present invention mixes the 4th mixed solution with soda ash, and it is molten to obtain the 5th mixing
Liquid.In the present invention, it is preferred to be mixed the soda ash with the 4th mixed solution by the way of stirring, the stirring turns
Speed is preferably 300~500r/min, and the time of the stirring is preferably 30~35min.
After obtaining the 5th mixed solution, the present invention mixes the 5th mixed solution with remainder water, gained mixing
Liquid is film agent.In the present invention, it is preferred to by the remainder water and the 5th mixed solution by the way of stirring
Mixing, the revolving speed of the stirring is preferably 300~400r/min, and the time of the stirring is preferably 15~20min.
The moisture is separately added by the present invention at two parts, i.e., part water is first mixed with phosphate, obtains phosphoric acid salt water
Solution sequentially adds nitrate, zinc oxide, citric acid, sodium fluoride, soda ash later, and finally remainder water is added again.This hair
It is bright to be separately added into moisture at two parts, each constituent can be made to be uniformly mixed to reach better film-formation result.In the present invention
In, the mass ratio of the part water and remainder water is preferably (2~3): 1.
The present invention also provides the preparations of preparation method described in film agent described in above technical scheme or above technical scheme
The application method of film agent, comprising the following steps:
The film agent is diluted with water, dilution is obtained, the metal material after degreasing and rust removal, washing process is soaked
Bubble is in the dilution.
In the present invention, the volume content of film agent is preferably 5%~7% in the dilution.In the present invention, described
The time of immersion is preferably 5~10min.In the present invention, the total acidity of the dilution be 25~30, free acidity be 2~
3.In the present invention, it is preferred to use using bromophenol blue as indicator, solution is set to become nattier blue from colourless with sodium hydroxide titration
Whether method measures the free acidity of the dilution, with the free acidity of the determination dilution in desired value range
It is interior；In the present invention, it is preferred to use using phenolphthalein as indicator, solution is set to become pink side from colourless with sodium hydroxide titration
Whether method measures the total acidity of the dilution, with the total acidity of the determination dilution in desired value range.This hair
Bright free acidity and total acidity by the control dilution, to more effectively control the film forming effect of the film agent
Fruit, the method is simple and easy to control, and such as dilution access times are excessive, and free acidity and total acidity may change,
The free acidity of the dilution and total acidity can be made to respectively reach by the method for adding the film agent in right amount required
Value range, to guarantee the film-formation result of film agent.In the present invention, the metal material preferably include iron, ferroalloy,
One of aluminium, aluminium alloy, copper, copper alloy, magnesium, magnesium alloy, zinc and kirsite.
Film agent preparation and application provided by the invention is simple, easy to operate, it is easy to accomplish large-scale production.
Film agent provided by the invention and its preparation and application are described in detail below with reference to embodiment, but
It is that they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
The preparation of film agent:
Step 1: the pure water of 200KG is added in a kettle, is added 150KG phosphate using the agitating device of reaction kettle
Enter in pure water, agitating device is persistently stirred 40 minutes with 650r/min stirs evenly phosphate in pure water；
Step 2: being added nitrate 150KG under the revolving speed of 650r/min into reaction kettle, and nitrate will after being added
The rotational speed regulation of agitating device continues to stir 40min to 500r/min；
Step 3: zinc oxide 150KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
30min has all dissolved zinc oxide；
Step 4: citric acid 150KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
25min；
Step 5: sodium fluoride 100KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
30min；
Step 6: soda ash 100KG, the agitating device stirring lasting with the revolving speed of 500r/min are added into reaction kettle
30min.
Step 7: pure water 100KG, the agitating device stirring 15min lasting with the revolving speed of 400r/min is added to reaction kettle
Film agent can be obtained.
Metal material is handled:
1000ml water is added in beaker, the film agent of preparation is added thereto in the ratio of volume fraction 7%, is stirred
Uniformly obtain dilute solution.It takes 10ml dilution to be put into beaker to drip into 3 drop bromophenol blues, sodium hydroxide is taken to drip into making colourless become
Blue, measuring free acidity is 2.5, separately takes 10ml dilution to be put into beaker and drips into 3 drop phenolphthalein, sodium hydroxide is taken to drip into making nothing
For discoloration at pale red, measuring total acidity is 30.
It will be immersed in dilute solution by the ironware of the pretreatment procedures such as degreasing and rust removal, washing, impregnate 10min.
Measure of merit:
Surface appearance of the observation by film agent treated ironware, the result is shown in Figure 1, left side is the gold before processing in Fig. 1
Metal surface situation, right side are film agent treated metal surface situation.As it can be seen that after film agent provided by the invention processing
Metal surface form a film uniform and smooth.
According to GB/T1771-2007 " measurement of the resistance to neutral salt spray performance of paint and varnish " standard to the metal after film forming
(i.e. naked film) carries out resistance to neutral salt spray test, and as a result: 3~4h of metal surface does not return rust.
Embodiment 2
The preparation of film agent:
Step 1: the pure water of 350KG is added in a kettle, is added 110KG phosphate using the agitating device of reaction kettle
Enter in pure water, agitating device is persistently stirred 40 minutes with 650r/min stirs evenly phosphate in pure water；
Step 2: being added nitrate 110KG under the revolving speed of 650r/min into reaction kettle, and nitrate will after being added
The rotational speed regulation of agitating device continues to stir 40min to 500r/min；
Step 3: zinc oxide 110KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
30min has all dissolved zinc oxide；
Step 4: citric acid 110KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
25min；
Step 5: sodium fluoride 80KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
30min；
Step 6: soda ash 80KG, the agitating device stirring lasting with the revolving speed of 500r/min are added into reaction kettle
30min.
Step 7: pure water 150KG, the agitating device stirring 15min lasting with the revolving speed of 400r/min is added to reaction kettle
Film agent can be obtained.
Metal material is handled:
1000ml water is added in beaker, the film agent of preparation is added thereto in the ratio of volume fraction 7%, is stirred
Uniformly obtain dilute solution.It takes 10ml dilution to be put into beaker to drip into 3 drop bromophenol blues, sodium hydroxide is taken to drip into making colourless become
Blue, measuring free acidity is 3, separately takes 10ml dilution to be put into beaker and drips into 3 drop phenolphthalein, takes sodium hydroxide to drip colourless into making
Become pale red, measuring total acidity is 28.
It will be steeped in dilute solution by the aluminum component of the pretreatment procedures such as degreasing and rust removal, washing, impregnate 10min.
Measure of merit:
The surface appearance for observing the aluminum component after film agent is handled, is as a result same as embodiment 1, by skin provided by the invention
Film treated metal surface forms a film uniform and smooth.
According to GB/T1771-2007 " measurement of the resistance to neutral salt spray performance of paint and varnish " standard to the metal after film forming
(i.e. naked film) carries out resistance to neutral salt spray test, and as a result: 3~4h of metal surface does not return rust.
Embodiment 3
The preparation of film agent:
Step 1: the pure water of 160KG is added in a kettle, is added 160KG phosphate using the agitating device of reaction kettle
Enter in pure water, agitating device is persistently stirred 40 minutes with 650r/min stirs evenly phosphate in pure water；
Step 2: being added nitrate 160KG under the revolving speed of 650r/min into reaction kettle, and nitrate will after being added
The rotational speed regulation of agitating device continues to stir 40min to 500r/min；
Step 3: zinc oxide 160KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
30min has all dissolved zinc oxide；
Step 4: citric acid 160KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
25min；
Step 5: sodium fluoride 110KG, the agitating device stirring lasting with the revolving speed of 500r/min is added to reaction kettle
30min；
Step 6: soda ash 110KG, the agitating device stirring lasting with the revolving speed of 500r/min are added into reaction kettle
30min.
Step 7: pure water 80KG is added to reaction kettle, agitating device is with the lasting stirring 15min of the revolving speed of 400r/min
Film agent can be obtained.
Metal material is handled:
1000ml water is added in beaker, the film agent of preparation is added thereto in the ratio of volume fraction 7%, is stirred
Uniformly obtain dilute solution.It takes 10ml dilution to be put into beaker and drips fragrant blue into 3 drop bromines, sodium hydroxide is taken to drip into making colourless become
Blue, measuring free acidity is 2, separately takes 10ml dilution to be put into beaker and drips into 3 drop phenolphthalein, takes sodium hydroxide to drip colourless into making
Become pale red, measuring total acidity is 28.
It will be immersed in dilute solution by the magnesium alloy member of the pretreatment procedures such as degreasing and rust removal, washing, impregnate 10min.
Measure of merit:
As a result observation is same as embodiment 1, mentions by the present invention by the surface appearance of film agent treated magnesium alloy member
The film agent of confession treated metal surface forms a film uniform and smooth.
According to GB/T1771-2007 " measurement of the resistance to neutral salt spray performance of paint and varnish " standard to the metal after film forming
(i.e. naked film) carries out resistance to neutral salt spray test, and as a result: 3~4h of metal surface does not return rust.
Comparative example 1
It is not added with phosphate, remaining is identical as the process of embodiment 1, and film agent is made.
Observation by this film agent treated metal material surface appearance, by this film agent treated metal watch
Face film forming layer is uneven.
Resistance to neutral salt spray test result: 3~4h of metal surface returns rust.
Comparative example 2
It is not added with nitrate, remaining is identical as the process of embodiment 1, and film agent is made.
Observation by this film agent treated metal material surface appearance, by this film agent treated metal watch
Face film forming layer is uneven.
Resistance to neutral salt spray test result: 3~4h of metal surface returns rust.
Comparative example 3
It is not added with zinc oxide, remaining is identical as the process of embodiment 1, and film agent is made.
Observation by this film agent treated metal material surface appearance, by this film agent treated metal watch
Face mask layer is relatively thin and uneven.
Resistance to neutral salt spray test result: 2~3h of metal surface returns rust.
Comparative example 4
It is not added with citric acid, remaining is identical as the process of embodiment 1, and film agent is made.
Observation by this film agent treated metal material surface appearance, by this film agent treated metal watch
Face mask layer is not fine and smooth.
Resistance to neutral salt spray test result: 3~4h of metal surface returns rust.
Comparative example 5
It is not added with sodium fluoride, remaining is identical as the process of embodiment 1, and film agent is made.
Observation by this film agent treated metal material surface appearance, by this film agent treated metal watch
Face film forming layer is relatively thin and uneven.
Resistance to neutral salt spray test result: 3~4h of metal surface returns rust.
Comparative example 6
It is not added with soda ash, remaining is identical as the process of embodiment 1, and film agent is made.
Observation by this film agent treated metal material surface appearance, by this film agent treated metal watch
Face mask layer is not fine and smooth.
Resistance to neutral salt spray test result: 3~4h of metal surface returns rust.
By being compared with comparative example as can be seen that film agent provided by the invention is uniform in metal material surface film forming
Exquisiteness, stability is good, and the metal material corrosion resistance after upper film is strong.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of film agent, which is characterized in that be prepared by the component for including following weight percentage:
2. the preparation method of film agent described in claim 1, which comprises the following steps:
(1) part water and phosphate are mixed, obtains phosphate aqueous solution；
(2) phosphate aqueous solution and the nitrate mixing obtained the step (1), obtains the first mixed solution；
(3) the first mixed solution that the step (2) obtains is mixed with zinc oxide, obtains the second mixed solution；
(4) the second mixed solution that the step (3) obtains is mixed with citric acid, obtains third mixed solution；
(5) the third mixed solution that the step (4) obtains is mixed with sodium fluoride, obtains the 4th mixed solution；
(6) the 4th mixed solution that the step (5) obtains is mixed with soda ash, obtains the 5th mixed solution；
(7) the 5th mixed solution that the step (6) obtains is mixed with remainder water, gained mixed liquor is film agent.
3. preparation method according to claim 2, which is characterized in that in the water and the step (7) in the step (1)
Water mass ratio be (2~3): 1.
4. the application method of the film agent of the preparation of preparation method described in film agent described in claim 1 or Claims 2 or 3,
Characterized by comprising the following steps:
The film agent is diluted with water, dilution is obtained, the metal material after degreasing and rust removal, washing process is immersed in
In the dilution.
5. application method according to claim 4, which is characterized in that the volume content of film agent is in the dilution
5%~7%.
6. application method according to claim 4, which is characterized in that the time of the immersion is 5~10min.
7. application method according to claim 4, which is characterized in that the total acidity of the dilution is 25~30, is dissociated
Acidity is 2~3.
8. application method according to claim 4, which is characterized in that the metal material includes iron, ferroalloy, aluminium, aluminium
One kind of alloy, copper, copper alloy, magnesium, magnesium alloy, zinc and kirsite.
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| US6171521B1 (en) * | 1998-11-09 | 2001-01-09 | Nalco/Exxon Energy Chemicals, L.P. | Zwitterionic water-soluble substituted imine corrosion inhibitors |
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