CN106283014A - A kind of chrome-free tanning agent and its preparation method and application - Google Patents
A kind of chrome-free tanning agent and its preparation method and application Download PDFInfo
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- CN106283014A CN106283014A CN201610894417.6A CN201610894417A CN106283014A CN 106283014 A CN106283014 A CN 106283014A CN 201610894417 A CN201610894417 A CN 201610894417A CN 106283014 A CN106283014 A CN 106283014A
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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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/58—Treatment of other metallic material
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Abstract
The present invention relates to a kind of chrome-free tanning agent and its preparation method and application, described chrome-free tanning agent includes by percentage to the quality: straight chain fatty acid alkylolamides compound 45%～91.5%；Straight chain hydrophobic fatty acid 9.5%～55%.Its preparation method is: joins by each component and takes raw material mix homogeneously and obtain finished product；Or hydrophobic fat acid and the mixture of fatty acid alcohol amide compound composition is first prepared by design component, then add reinforcing agent and obtain finished product.This chrome-free tanning agent is applicable to containing manganese metallic surface Passivation Treatment.The chrome-free tanning agent that the present invention is developed has good water solubility, nontoxic, pollution-free, manganese metal inactivating performance is good and the feature such as film layer selfreparing, can preferably substitute existing electrolytic manganese chromating technique, have more significant environmental benefit and economic benefit.
Description
Technical field
The present invention relates to a kind of chrome-free tanning agent and its preparation method and application, belong to manganese field of metallurgy.
Background technology
Manganese and compound thereof are widely used, especially at steel in departments such as metallurgy, chemical industry, light industry, electronic material, agriculture and animal husbandries
In ferrum industry, the existence of manganese can significantly improve the mechanical performance of steel, often has " without manganese not Cheng Gang " this saying.But, due to
The chemical potential of manganese metal is relatively low, and activity is the highest, is easy in atmosphere cause the corrosion of manganese metal with oxygen reaction
Occurring, the corrosion of manganese not only can be substantially reduced the mechanical performance of manganese, shortens the service life of manganese plant equipment, and can destroy gold
Belong to electronics and the optical characteristics of material, even cause catastrophic accident and huge economic loss, therefore, it is necessary to it is entered
Row passivation is to improve the decay resistance of manganese.Traditional chromating technique, has technique simple, low cost, and tank liquor is stable,
Gained passivating film color even, adhesion is good, and corrosion resistance is high, and passivating film has the features such as good self-repairing capability, quilt
It is widely used in electrolytic manganese commercial production.But, the Cr VI used in this technique is severe toxicity and carcinogen, to environment
And human health risk is serious, many countries have give stricted orders the use limiting chromating technique the most, therefore, develop novel environment friendly
Passivating agent products, for electrolytic manganese industry benign development have be of great significance.
At present, the research of chrome-free tanning agent becomes the focus that lot of domestic and international scientific worker pays close attention to.Such as, patent
CN200510086577.X disclose a kind of with 0.1～20% phosphate aqueous solution for electrolytic manganese passivating liquid, with alkali regulation pH be 3
～14, the passivation to manganese metal has certain effect.Patent CN201210439032.2 discloses a kind of with phosphoric acid or phosphate
Be main passivator, citric acid and acetic acid be cosolvent, sodium tartrate be corrosion inhibiter, zinc sulfate and calcium nitrate be the novel of brightener
Chrome-free tanning agent, the manganese metal after this passivating solution processes has good color and luster and excellent passivation effect.But, due to phosphoric acid
Use, passivating solution can produce substantial amounts of containing phosphor passivation waste liquid, has certain harm to water body, also easily causes manganese metal simultaneously
In product, phosphorus content exceeds standard.Patent CN200610018760.0 discloses a kind of with silicate, cosolvent, corrosion inhibiter, accelerator
Electrolytic manganese chromate-free passivation agent for main constituent.The product that product wet-heat resisting ability after the passivation of this passivator is passivated with potassium dichromate
Close, but in product, silicone content increases, and can to a certain degree reduce the quality of Electrolytic Manganese Product.In sum, existing nothing
Chromium passivating agent product, more or less exists that phosphorus pollutes, passivating solution is unstable, product quality is bad, do not have the drawbacks such as self-repairability,
Therefore, the chrome-free tanning agent product of exploitation novel environment friendly it is badly in need of.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is provided that a kind of chrome-free tanning agent and its preparation method and application.
One chrome-free tanning agent of the present invention, it is characterised in that include following component by percentage to the quality:
Straight chain fatty acid alkylolamides compound 45%～91.5%；
Straight chain hydrophobic fatty acid 9.5%～55%.
As more excellent scheme, one chrome-free tanning agent of the present invention, include following component by percentage to the quality:
Straight chain fatty acid alkylolamides compound 45%～90%, be preferably 70%～89%, more preferably 75%～
85%；
Straight chain hydrophobic fatty acid 9.5～50%, be preferably 9.5～28%, more preferably 13.5～23.3%；
Reinforcing agent 0.5～5%, be preferably 1.5～2%, more preferably 1.5～1.7%.
Chrome-free tanning agent in the present invention, each component gross mass percent sum is 100%.
Chrome-free tanning agent in the present invention, the carbon atom number of described hydrophobic fat acid is more than or equal to 6.Be preferably 6～
26.Described hydrophobic fat acid more preferably C6～C26At least one in straight chain unitary hydrophobic carboxylic acid.Further
It is preferably lauric acid (C12), myristic acid (C14), Palmic acid (C16), stearic acid (C18), oleic acid (C18 unsaturated fatty acid)
At least one.
Chrome-free tanning agent in the present invention, described reinforcing agent is ethylenediaminetetraacetic acid, citric acid, ascorbic acid, diethanol
Amine, triethanolamine, any one or two kinds in triisopropanolamine etc. are with the mixture of any proportioning.
Chrome-free tanning agent in the present invention, described fatty acid alcohol amide compound is fatty acid one glycollic amide or diethyl
Alkylolamides compounds.
As preferably, described fatty acid alcohol amide compound is by C6～C26Straight chain unitary hydrophobic carboxylic acid and diethanolamine or
Ethanolamine generation amidation process is prepared from.
As further preferred version, described fatty acid alcohol amide compound is selected from lauric acid diethyl amide, lima bean
Cool acid diglycollic amide, Palmic acid diglycollic amide, Stearic acid diethanolamine salt, oleic acid diethyl amide, lauric acid one ethanol
In amide, myristic acid one glycollic amide, Palmic acid one glycollic amide, stearic acid one glycollic amide, oleic acid one glycollic amide
At least one.
The chrome-free tanning agent that described electrolytic manganese metal surface processes, its product can according to component and content requirement, with
Excess fatty acids be raw material with the reaction such as diethanolamine or monoethanolamine obtain fatty acid and fatty acid alcohol amide mixture (see
Technology path 1), then add a certain amount of reinforcing agent and obtain passivating agent products；
Also can be simply mixed by each component and prepare (see technical scheme 2), its technology path is as follows:
Technology path 1:
Described technology path 1 includes following two steps:
Step one
In excess straight chain hydrophobic fatty acid, add diethanolamine and/or monoethanolamine, react, generate fatty acid
Mixture with fatty acid alcohol amide；
Step 2
By design component, join and take reinforcing agent, and reinforcing agent is added in step one gained mixture, mix homogeneously, obtain
Described chrome-free tanning agent.
Technology path 2: by being designed to distribution cut-off chain fatty acid alkylolamides compounds, hydrophobic fat acid, reinforcing agent,
After joining each component mix homogeneously taken, obtain described passivator.
As in method for optimizing, step one, first choose a certain amount of C6～C26Straight chain unitary hydrophobic carboxylic acid, fat in molar ratio
Fat acid: hydramine=1:0.30～0.50 adds alcohol amine compound, reacts 3～6h under the conditions of 100～150 DEG C, then add
The hydramine of 0.15～0.40 times of fatty acid consumption (mole) and base catalyst, 60～90 DEG C carry out ammonolysis reaction 2～
4h, generates fatty acid and the mixture of fatty acid alcohol amide；Described hydramine is diethanolamine and/or monoethanolamine, described alkalescence
Catalyst be KOH or or NaOH, the consumption of described base catalyst be hydrophobic fat acid and hydramine gross mass 0.5%～
1%.
When industrial applications, when described alcohol amine compound is diethanolamine and/or monoethanolamine, described in step one
Mixture is the mixture of hydrophobic fat acid and hydrophobic fat acid two/mono-glycollic amide composition.
When industrial applications, described passivator adds in the water of 70～90 DEG C, preferably 80 DEG C, and mix homogeneously obtains
Passivator mass percentage concentration is the passivating solution of 0.5～5%.This passivating solution can directly use.
The application of a kind of chrome-free tanning agent in the present invention, including using it for processing the metal product in manganese.
As the preferred version of application, it comprises the steps:
Chrome-free tanning agent and water are hybridly prepared into passivating solution be placed in deactivation slot, manganese metallic article will be contained and be immersed in and join
The chromium-free passivation liquid made is passivated 1～5 minute, cleans after taking-up, be dried, obtain finished product.
In described passivating solution, the mass percentage concentration of chrome-free tanning agent is 0.5～5%.
The described metallic article containing manganese is preferably manganese metal goods.More preferably electrolysis gained manganese metal goods, i.e. electricity
Solve the manganese metal goods on minus plate.
After being passivated, rinse well with water.Described being dried is preferably drying.
The invention has the beneficial effects as follows:
(1) straight-chain monobasic carboxylic acid has preferable hydrophobicity, can form performance good when using it for Treatment of Metal Surface
Good hydrophobic film, but typically need to make solvent with organic solvents such as dehydrated alcohol, gained solution is volatile, it is difficult to directly apply to
On-the-spot open system；Fatty acid alcohol amides compound also can form certain passivation effect in metal surface, but passivation is imitated
The most not ideal enough.In the present invention, emulsifiability based on fatty acid alcohol amides compound, it is achieved that hydrophobic fat acid is at water
In preferable dispersion, and then achieve hydrophobic fat acid and the metal surface containing manganese is worked in coordination with by fatty acid alcohol amides compound
Passivation, makes inactivating performance that (see comparative example 1 and embodiment 1,2, corrosion current reduce 1 order of magnitude more than) is substantially improved.
(2) present invention can prepare fatty acid and the mixture of fatty acid alcohol amide under the conditions of relatively low temperature, compares tradition
The preparation of fatty acid alcohol amide, course of reaction side reaction is few, and the mix product obtained complies fully with the master of passivator of the present invention
Component requirements.
(3) fatty acid used in the present invention and fatty acid alcohol amides compound have hydrophobic carbochain and carboxylic acid group or
The functional groups such as amide groups, in water solution system, each component can work in coordination with on manganese metal surface that to be self-assembly of compactness higher
Passivation layer；On the other hand, the bases such as the compound such as ethylenediaminetetraacetic acid, citric acid, ascorbic acid has multiple hydroxyls, carboxyl
Group, synergism, on manganese metal surface, strengthens passivation film.Additionally, due on reinforcing agent and fatty acid alcohol amides compound
All having multiple functional group, also have functional group's avtive spot of deposit when film forming, when film layer is destroyed, this moieties can
With with exposed fresh manganese metal effect out, it is achieved the self-regeneration of passivation film.
Chrome-free tanning agent prepared by the present invention, has the advantages such as simple to operate, low cost, environmental protection, self-repairability, for
Electrolytic manganese industrial expansion tool is of great significance.
Accompanying drawing explanation
The electrochemistry of the manganese metal that accompanying drawing 1 has been passivated prepared by the manganese metal not being passivated and embodiment 1 and comparative example 2
Energy-polarization curve result figure.
The surface Electronic Speculum figure of the manganese metal that accompanying drawing 2 has been passivated prepared by the manganese metal not being passivated and embodiment 1.
In Fig. 1: No. 1 curve is the chemical property-polarization curve of the manganese metal not being passivated；No. 2 curves are embodiment 1
Prepared by the chemical property-polarization curve of manganese metal that has been passivated, No. 3 curves are the gold being passivated prepared by comparative example 2
Belong to the chemical property-polarization curve of manganese.
In Fig. 2: a be just be electrolysed the surface Electronic Speculum figure of the manganese metal not being passivated, b is to place the gold not being passivated after a week
Belong to the surface Electronic Speculum figure of the one week manganese metal of placement after the surface Electronic Speculum figure of manganese, c passivation.
Detailed description of the invention
Following example are intended to further illustrate present invention, but scope is not limited by these embodiments
System.
In embodiment, unless otherwise specified all percents refer both to mass percent.
Embodiment 1
First preparing electrolytic manganese in diaphram tank by electrolysis: employing rustless steel is minus plate, lead silver four alloy sheets are sun
Pole plate.Electrolytic condition: ammonium sulfate 120g/L, manganese sulfate 36.91g/L, the catholyte of selenium dioxide 0.05g/L, catholyte pH is about
Being 6.8～7.0, electric current density is 350A/m2, electrolysis temperature 38 DEG C, electrolysis time 1.5h, prepared electrolytic manganese product is used for
Follow-up Inactivation experiment and be passivated a layer performance evaluation.
Percetage by weight shared by each component of passivator is: stearic acid 16.4%, and Stearic acid diethanolamine salt 81.9% is anti-bad
Hematic acid 1.7%.By stearic acid, Stearic acid diethanolamine salt and water, first under the conditions of 80 DEG C, heated and stirred is dissolved, and is subsequently added anti-
Bad hematic acid stirring and dissolving, obtains the chromium-free passivation liquid (concentration is 3%) processed for electrolytic manganese metal surface.
Chromium-free passivation liquid is placed in deactivation slot, has rinsed the cathode plate surface of electrolysis with clear water, has been then placed in deactivation slot
In, make chromium-free passivation liquid submergence cathode plate surface, taking-up distilled water flushing after being passivated 2 minutes, dry, the gold after being passivated
Belong to manganese product.The manganese metal not being passivated and the manganese metal being passivated are carried out electrochemical property test, polarization curve result such as Fig. 1
And shown in table 1.
Table 1 non-passive metal manganese and passive metal manganese polarization curve result
| Ecorr(V) | Corrosion current icorr(Acm-2) | R(ohm) | Corrosion rate (mil/year) | |
| It is not passivated | -1.178 | 9.01E-05 | 377 | 4.75E+02 |
| After passivation | -0.95 | 4.626E-07 | 27100 | 2.442E+0 |
From accompanying drawing 1 and table 1 polarization curve result, after manganese metal passivation, sample corrosion potential increases, and certainly corrodes electricity
Position size reflects the probability size that corrosion occurs, and corrosion potential is the most negative, and the probability that corrosion occurs is the biggest, passivated
After, due to the existence of passivating film, corrosion potential is just becoming, and greatly reduces manganese metal and the probability of corrosion, polarization resistance occur
Sharply increasing, corrosion current reduces two orders of magnitude, and the corrosion rate of manganese metal reduces the most accordingly, and result shows, should
Passivator (stearic acid 16.4%, Stearic acid diethanolamine salt 81.9%, ascorbic acid 1.7%) can effectively improve electrolyzing gold
Belong to the Corrosion Protection of manganese.In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 85s, and is not passivated
Simple substance manganese Coloring Time is 6s.
Before and after sample passivation, (a is the electron microscopic picture being just electrolysed non-passive metal manganese to Electronic Speculum result, b as shown in Figure 2
Electron microscopic picture after placing one week for non-passive metal manganese, c is chrome-free tanning agent (stearic acid 16.4%, stearic acid diethanol acyl
Amine 81.9%, ascorbic acid 1.7%) place one week after passivation after the electron microscopic picture of manganese metal).As shown in Figure 2, just electrolysis is out
Manganese metal have irregular taper, taper plane of crystal is smooth, above the electrolyte do not rinsed well of attachment portion, place one
Zhou Hou, plane of crystal produces white fine hair shape oxidation product and surface color is the most dimmed, and manganese metal is the most oxidized, and blunt
Manganese metal surface after change is the brightest smooth, and obvious defect does not occur in surface, it can be seen that, this passivator is to metal
The passivation of manganese has good effect.
Comparative example 1
The preparation of electrolytic manganese metal is with embodiment 1.
Percetage by weight shared by each component of passivator is: stearic acid 16.4%, Stearic acid diethanolamine salt 83.6%.Will be hard
Fat acid, Stearic acid diethanolamine salt and water are first 80 DEG C of heating, and magnetic agitation makes stearic acid dissolve, obtains for electrolytic manganese metal
The chromium-free passivation liquid (concentration is 3%) that surface processes.
Chrome-free tanning agent is placed in deactivation slot, rinses electrolytic negative plate surface with clear water, is then placed in deactivation slot, makes nothing
Chromium passivating agent submergence electrolytic negative plate surface, taking-up distilled water flushing after being passivated 2 minutes, dry, the metal after being passivated
Manganese product.The manganese metal being passivated is carried out electrochemical property test, shown in polarization curve result table 2.
Table 2 is not passivated and passive metal manganese polarization curve result
In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 72s.
Comparative example 2
The preparation of electrolytic manganese metal is with embodiment 1.
Stearic acid diethanolamine salt and water are first dissolved 80 DEG C of heated and stirred, the Stearic acid diethanolamine salt of configuration 3%
Solution, uses this passivating solution to be passivated electrolytic manganese and electrochemical property test, and its polarization curve result is as shown in table 3.
Table 3 manganese metal polarization curve result
In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 36s.
By embodiment 1 and comparative example 1, comparative example 2 it can be seen that the present invention is in the presence of having reinforcing agent,
The effect that its effect is better than comparative example 1 and comparative example 2 is taken；This has also turned out the present invention and has only had each component synergism,
Can be only achieved optimal effectiveness.
Comparative example 3
The preparation of electrolytic manganese metal is with embodiment 1.
Percetage by weight shared by each component of passivator is: oleic acid diethyl amide 98.1%, ethylenediaminetetraacetic acid 1.9%.
Oleic acid diethyl amide and water are first dissolved 80 DEG C of heated and stirred, is subsequently added ethylenediaminetetraacetic acid, obtains for electrolyzing gold
Belong to the chromium-free passivation liquid (concentration is 3%) that manganese surface processes.This passivating solution is used electrolytic manganese to be passivated and chemical property
Test, polarization curve result is as shown in table 4.
Table 4 is passivated polarization curve result
In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 38s.
Comparative example 4
The preparation of electrolytic manganese metal is with embodiment 1.
Percetage by weight shared by each component of passivator is: lauric acid 57%, oleic acid diethyl amide 41.4%, triethanolamine
1.6%.Lauric acid, oleic acid diethyl amide and water are first dissolved 80 DEG C of heated and stirred, is subsequently added triethanolamine, is used
The chromium-free passivation liquid (concentration is 3%) processed in electrolytic manganese metal surface.When test result indicate that potassium permanganate point dropping liquid variable color
Between be 47s.But having floccule to occur in solution, solution is unstable, is not suitable for passivation, therefore fatty acid proportion in passivator
Should not be the highest.
Embodiment 2
The preparation of electrolytic manganese metal is with embodiment 1.
Percetage by weight shared by each component of passivator is: lauric acid 16%, oleic acid diethyl amide 82.4%, ethylenediamine tetraacetic
Acetic acid 1.6%.Lauric acid, oleic acid diethyl amide and water are first dissolved 80 DEG C of heated and stirred, is subsequently added ethylenediamine tetrem
Acid, obtains the chromium-free passivation liquid (concentration is 3%) processed for electrolytic manganese metal surface.Use this passivator that electrolytic manganese is carried out
Passivation and electrochemical property test, polarization curve result is as shown in table 5.
The passivation polarization curve result such as table 5 lauric acid
| Ecorr(V) | icorr(Acm-2) | R(ohm) | Corrosion rate (mil/year) | |
| It is not passivated | -1.178 | 9.01E-05 | 377 | 4.75E+02 |
| After passivation | -0.950 | 7.475E-07 | 20116 | 3.946E+00 |
In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 87s.
Embodiment 3
The preparation of electrolytic manganese metal is with embodiment 1.
Percetage by weight shared by each component of passivator is: Palmic acid 16%, Stearic acid diethanolamine salt 82.4%, three ethanol
Amine 1.6%.Palmic acid, Stearic acid diethanolamine salt and water are first dissolved 80 DEG C of heated and stirred, is subsequently added triethanolamine,
To the chromium-free passivation liquid (concentration is 3%) processed for electrolytic manganese metal surface.Use this passivating solution that electrolytic manganese is passivated
And electrochemical property test, polarization curve result is as shown in table 6.
Table 6 is passivated polarization curve result
| Ecorr(V) | icorr(Acm-2) | R(ohm) | Corrosion rate (mil/year) | |
| Simple substance manganese | -1.178 | 9.01E-05 | 377 | 4.75E+02 |
| After passivation | -0.95 | 5.628E-06 | 3218 | 2.971E+01 |
In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 79s.
Embodiment 4
The preparation of electrolytic manganese metal is with embodiment 1.
Stearic acid in molar ratio: diethanolamine=1:0.35 adds alcohol amine compound, reacts 6h under the conditions of 130 DEG C, so
After add diethanolamine and the 1wt%KOH of 0.25 times of fatty acid consumption (mole), carry out ammonolysis reaction 4h at 80 DEG C,
Generate fatty acid and the mixture of fatty acid hydramine；In mixture, stearic acid content is 18% after testing, stearic acid diethanol acyl
Amine 78%, diethanol amine content is 4%.It is configured to the passivating solution that concentration is 3%, uses this passivating solution that electrolytic manganese is passivated
And electrochemical property test, polarization curve result is as shown in table 7.
Table 7 is passivated polarization curve result
| Ecorr(V) | icorr(Acm-2) | R(ohm) | Corrosion rate (mil/year) | |
| Simple substance manganese | -1.178 | 9.01E-05 | 377 | 4.75E+02 |
| After passivation | -0.923 | 4.109E-07 | 29104 | 2.169E+00 |
In the experiment of potassium permanganate nitric acid drop, potassium permanganate point dropping liquid Coloring Time is 88s.
Claims (10)
1. a chrome-free tanning agent, it is characterised in that include following component by percentage to the quality:
Straight chain fatty acid alkylolamides compound 45%～91.5%；
Straight chain hydrophobic fatty acid 9.5%～55%.
A kind of chrome-free tanning agent the most according to claim 1；It is characterized in that including following component by percentage to the quality:
Straight chain fatty acid alkylolamides compound 45%～90%；
Straight chain hydrophobic fatty acid 9.5%～50%；
Reinforcing agent 0.5%～5%.
A kind of chrome-free tanning agent the most according to claim 1；It is characterized in that:
Described straight chain fatty acid alkylolamides compound is fatty acid one glycollic amide and/or fatty acid diglycollic amide class
Compound；
The carbon number of described straight chain hydrophobic fatty acid molecule is more than or equal to 6；
Described reinforcing agent is ethylenediaminetetraacetic acid, citric acid, ascorbic acid, diethanolamine, triethanolamine, in triisopropanolamine etc.
Any one or two kinds with the mixture of any proportioning.
A kind of chrome-free tanning agent the most according to claim 3；It is characterized in that: the carbon of described hydrophobic fat acid molecule is former
Subnumber is 6～26.
A kind of chrome-free tanning agent the most according to claim 4；It is characterized in that:
Described hydrophobic fat acid is C6～C26At least one in straight chain unitary hydrophobic carboxylic acid；
At least one in lauric acid, myristic acid, Palmic acid, stearic acid, oleic acid of described hydrophobic fat acid.
A kind of chrome-free tanning agent the most according to claim 1；It is characterized in that: described fatty acid alcohol amide compound is by C6
～C26Straight chain unitary hydrophobic carboxylic acid is prepared from diethanolamine and/or monoethanolamine generation amidation process.
A kind of chrome-free tanning agent the most according to claim 6；It is characterized in that: described fatty acid alcohol amide compound is selected from
Lauric acid diethyl amide, myristic acid diglycollic amide, Palmic acid diglycollic amide, Stearic acid diethanolamine salt, oleic acid two
Glycollic amide, lauric acid one glycollic amide, myristic acid one glycollic amide, Palmic acid one glycollic amide, stearic acid one glycollyl
At least one in amine, oleic acid one glycollic amide.
8. the method for the chrome-free tanning agent prepared as described in claim 2-7 any one；It is characterized in that including following
Two schemes:
Scheme one
Described scheme one includes following two steps:
Step one
In excess straight chain hydrophobic fatty acid, add diethanolamine and/or monoethanolamine, react, generate fatty acid and fat
The mixture of fat acid alcohol amide；
Step 2
By design component, join and take reinforcing agent, and reinforcing agent is added in the mixture of step one gained, mix homogeneously, obtain institute
State chrome-free tanning agent；
Scheme two
Take fatty acid alcohol amides compound, hydrophobic fat acid, reinforcing agent by being designed to distribution, each component mixing taken will be joined
After Jun Yun, obtain described passivator.
9. the application of the chrome-free tanning agent as described in claim 1-7 any one；It is characterized in that: described application includes
Use it for processing the metal product in manganese.
A kind of application of chrome-free tanning agent；It is characterized in that: chrome-free tanning agent is mixed with water
It is configured to passivating solution to be placed in deactivation slot, the metallic article containing manganese is immersed in the chromium-free passivation liquid prepared passivation 1～5 point
Clock, cleans after taking-up, is dried, obtains finished product；In described passivating solution, the mass percentage concentration of chrome-free tanning agent is 0.5%～5%.
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| CN201610894417.6A CN106283014B (en) | 2016-10-13 | 2016-10-13 | A kind of chrome-free tanning agent and its preparation method and application |
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| CN201610894417.6A CN106283014B (en) | 2016-10-13 | 2016-10-13 | A kind of chrome-free tanning agent and its preparation method and application |
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| CN106283014B CN106283014B (en) | 2019-06-07 |
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| CN115161628B (en) * | 2021-04-07 | 2023-10-13 | 中南大学 | Passivation agent and passivation method for electrolytic manganese |
| CN115323365A (en) * | 2021-05-10 | 2022-11-11 | 中南大学 | Chromium-free passivation method for electrolytic manganese |
| CN115323365B (en) * | 2021-05-10 | 2023-10-13 | 中南大学 | Chromium-free passivation method for electrolytic manganese |
| CN113957424A (en) * | 2021-10-18 | 2022-01-21 | 烟台万华聚氨酯合成材料有限公司 | Passivation cleaning agent and preparation method and application thereof |
| CN114990539A (en) * | 2022-06-14 | 2022-09-02 | 无锡伊佩克科技有限公司 | Hot galvanizing chromium-free passivator and preparation method thereof |
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