CN110180758A - The preparation method of acid and alkali-resistance oxidation-resistant coating, the material with acid and alkali-resistance oxidation-resistant coating and application - Google Patents
The preparation method of acid and alkali-resistance oxidation-resistant coating, the material with acid and alkali-resistance oxidation-resistant coating and application Download PDFInfo
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- CN110180758A CN110180758A CN201910464125.2A CN201910464125A CN110180758A CN 110180758 A CN110180758 A CN 110180758A CN 201910464125 A CN201910464125 A CN 201910464125A CN 110180758 A CN110180758 A CN 110180758A
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- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
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Abstract
The invention discloses the preparation method of acid and alkali-resistance oxidation-resistant coating, the material with acid and alkali-resistance oxidation-resistant coating and applications, are related to field of material surface modification.The preparation method of acid and alkali-resistance oxidation-resistant coating includes the following steps: that will there is the substrate of first coating to react in modification liquid；Wherein, first coating is formed by catechol or plant polyphenol in substrate surface auto polymerization, is included highly basic for dissociating first coating in modification liquid and is used for and product more than first amine molecule in situ for carrying out addition polymerization rapidly after dissociation.Material with acid and alkali-resistance oxidation-resistant coating includes that substrate and deposition phenol amine on base material are polymer coated, wherein the polymer coated surface exposure of phenol amine has primary amine groups.The crosslinking of covalent bond is carried out using the molecule in the amido and first coating of more than first amine molecule, improve acid and alkali-resistance, resistance to oxidation and the abrasion resistance properties of material, sequent surface grafting functional molecule is convenient in the introducing of primary amine groups simultaneously, can be applied in preparing anticorrosive oxidation-resistant material.
Description
Technical field
The present invention relates to field of material surface modification, and the preparation method of in particular to acid and alkali-resistance oxidation-resistant coating, have
The material of acid and alkali-resistance oxidation-resistant coating and application.
Background technique
Material surface carries out coating and modifies in modern chemistry, biology and material science and applied science, engineering and skill
It is played an important role in art.The polyphenol or phenol amine coating formed currently based on molecule auto polymerization and self assembly principle is because having
Can nearly all surface adhesion characteristic and be widely used in material surface modifying, however the coating exist highly basic,
It is easily corroded in strong salt and Strong oxdiative environment, the defects of coating self-strength is lower, wear stability is relatively low.
Thus, abrasion and corrosion limit the coating and use for a long time under critical conditions or specific physiological condition, in addition, more
Radical species in phenol or phenol amine auto polymerization coating are single, and the functional molecular that surface is capable of fixing is limited, also more single, thus
Limit the application category of the coating grafting functional molecule.
Summary of the invention
The purpose of the present invention is to provide a kind of preparation methods of alkaline-resisting oxidation-resistant coating, it is intended to pass through the side of covalent cross-linking
The secondary or physical bond in polyphenol or phenol amine coating is being converted covalent bond by formula, improves coating while guaranteeing coating adherence energy
Acid and alkali-resistance oxidation resistent susceptibility.
Another object of the present invention is to provide a kind of materials with acid and alkali-resistance oxidation-resistant coating, have resistance to well
Soda acid, resistance to oxidation and abrasion resistance properties are suitable for promoting and applying.
The third object of the present invention be to provide the material with acid and alkali-resistance oxidation-resistant coating prepare it is anticorrosive anti-oxidant
Application in material.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The invention proposes a kind of preparation methods of acid and alkali-resistance oxidation-resistant coating, include the following steps:
Substrate with first coating is reacted in modification liquid, forms acid and alkali-resistance oxidation-resistant coating on substrate；
Wherein, first coating is polyphenol or phenol amine coating, includes the first one-tenth for dissociating first coating in modification liquid
Divide and for the second composition with dissociating product progress addition polymerization in situ；
Preferably, second composition has functional group；
Preferably, first composition is highly basic, and second composition is more than first amine molecule；
Preferably, the pH value of modification liquid is 11-14.
The present invention also proposes that a kind of material with acid and alkali-resistance oxidation-resistant coating, including substrate and acid and alkali-resistance resistance to oxidation apply
Layer, acid and alkali-resistance oxidation-resistant coating are prepared by above-mentioned preparation method.
The present invention also proposes the above-mentioned material with acid and alkali-resistance oxidation-resistant coating in preparing anticorrosive oxidation-resistant material
Using.
The beneficial effect that the embodiment of the present invention provides a kind of preparation method of acid and alkali-resistance oxidation-resistant coating is: it will be by that will sink
Product has polyphenol or the substrate of phenol amine coating to be modified, and first coating is dissociated into monomer or oligomer using first composition,
Then rapid addition polymerization is carried out in situ using second composition and dissociation monomer or oligomer.In this way, passing through regulation reaction item
Part eliminates the secondary or physical bond in coating while not changing coating adhesion properties, introduces covalent bond, improves the acidproof of material
Alkali, resistance to oxidation and abrasion resistance properties.
The present invention also provides a kind of materials with acid and alkali-resistance oxidation-resistant coating, including substrate and acid and alkali-resistance resistance to oxidation to apply
Layer, acid and alkali-resistance oxidation-resistant coating are prepared by above-mentioned preparation method, have good acid and alkali-resistance, resistance to oxidation and abrasion resistance properties
It can be applied in preparing anticorrosive oxidation-resistant material.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is coating layer thickness test result figure；
Fig. 2 is the test result figure of amido amount in coating；
Fig. 3 is material acid-fast alkali-proof oxidation resistance test result figure；
Fig. 4 is the test result figure of amido amount in coating.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
It is applied below to the preparation method of acid and alkali-resistance oxidation-resistant coating provided in an embodiment of the present invention, with acid and alkali-resistance resistance to oxidation
The material of layer and application are specifically described.
A kind of preparation method of acid and alkali-resistance oxidation-resistant coating provided in an embodiment of the present invention comprising following steps:
The preparation of S1, first coating
First coating (i.e. polyphenol or phenol amine coating) is formed in substrate surface auto polymerization using catechol or plant polyphenol,
Catechol or plant polyphenol can carry out auto polymerization in the substrate surface of nearly all material and form coating.The material of substrate includes
But be not limited to metal material, inorganic material, high molecular material, nanoparticle etc., and the shape of substrate does not also limit, it can be for just
In any shape of application.
Specifically, first coating be selected from poly-dopamine coating or composite coating；Wherein, composite coating is the second polyamines class
The coating that molecule and polymerized monomer are formed.Poly-dopamine coating is the common coatings type of material surface modifying, is easy to coat
Forming, the requirement of no special reaction condition.
Further, polymerized monomer is selected from catechol, pyrogallol, epicatechin, L-Epicatechin gallate, table and does not have
Infanticide catechin, Epigallo-catechin gallate (EGCG), norepinephrine, levodopa, dextrorotation DOPA, gallic acid and
Any one or more in its derivative and tannic acid.More than second amine molecule is in ethylenediamine, propane diamine and hexamethylene diamine
Any one or more, more than second amine molecule be small-molecular-weight more amine molecules.Inventor has found using above several
The coating that the overall molecule that polymerized monomer and polyamine molecule are formed carries out auto polymerization formation is also applied for general material, and can be
Twice-modified middle introducing amido.It is to submerge substrate wherein, energy using polymerized monomer and polyamine molecule as raw material in practical operation
Enough adherency on the surface of the material form coating.
You need to add is that there are binding forces between a large amount of Non-covalent moleculars in first coating, in highly basic, strong salt and Strong oxdiative
Non-covalent bond binding force is significantly weakened in environment, and coating is caused to be corroded；And the non-covalent ingredient of high-content limits painting
Layer self-strength, causes its wear stability relatively low.Thus, the corrosion-resistant and wear-resisting property of first coating is poor, cannot
Harsh condition is adapted to, simultaneously because surface is limited for the functional group of reaction, the functional molecular kind of the coating can be grafted on
Class and amount are also less.
You need to add is that the deposition of first coating needs according to circumstances selection operation, if to be deposited with the first painting
The substrate of layer is that raw material then can be without the step.It is by substrate three in practical operation by taking poly-dopamine coating as an example
6-12h is impregnated in the mixed solution that hydroxymethyl aminomethane and dopamine are formed, the concentration of trishydroxymethylaminomethane can be
0.5-3mg/mL, the concentration of dopamine can be 0.5-4mg/mL.
It is S2, twice-modified
Substrate with first coating is reacted in modification liquid, forms acid and alkali-resistance oxidation-resistant coating on substrate；Wherein,
Include first composition for dissociating first coating in modification liquid and is used for and dissociating product is in situ carries out addition polymerization rapidly
Second composition；Preferably, second composition has functional group；Preferably, first composition is highly basic, and second composition is more than first
Amine molecule.
Any one or more of highly basic in sodium hydroxide, potassium hydroxide and barium hydroxide in modification liquid.First
While coating is dissociated into monomer or oligomer under basic conditions, liberated surface is in situ and more than first amine molecule rapidly into
Row addition polymerization, so that the secondary or physical bond in coating is changed into chemical bond, more than first amine molecule is introduced so that coating surface contains
There are a large amount of primary amine groups, can be used for further fixing functional molecular.
Middle first composition and second composition are not limited to above preferred embodiment in other embodiments, can be realized dissociation
And introduce for the purpose of covalent bond, if first composition is strong oxidizing property ingredient.
It should be noted that since amido is introduced in the form of covalent bond, so that the corrosion-resistant of material, wear-resisting property are aobvious
Enhancing is write, the introducing of amido has the functional molecular of carboxyl etc. convenient for grafting materials, widened the application range of material.
Preferably, the pH value of modification liquid is 11-14, and it is aobvious that inventor has found that the pH value of modification liquid has the introduction volume of amido
The influence of work, pH value is too low to dissociate the polymer in first coating, and then cannot introduce amido or introduction volume is seldom,
Excellent corrosion-resistant, wear-resisting property cannot be obtained, and pH value is excessively high, it is too fast to will lead to dissociation rate, be unfavorable for it is in situ rapidly
Addition polymerization, leads to dissociate that monomer or oligomer are excessive to be discharged into solution.Inventor is made by the pH value of control modification liquid
The rate that first coating dissociates matches with the in situ rate polymerizeing again, is ensureing the same of adhesiveness and coating layer thickness
When the secondary or physical bond in coating is changed into covalent bond.
Specifically, more than first amine molecule is polypropylene amine molecule；Preferably, contain on the long-chain of polypropylene amine molecule
There are one of amido, sulfydryl or a variety of, it can be quickly more with catechol/plant using multiple amidos, the sulfydryl etc. on long-chain
Addition reaction occurs for phenol.In the preferred embodiment of the invention, polypropylene amine molecule be selected from polyallylamine, polyacrylamide and
, similar to any one or more in molecule, inventor has found further mention using above several polypropylene amine molecules for it
The covalent cross-linking degree of high coating, and keep acid and alkali-resistance, resistance to oxidation and the abrasion resistance properties of material more excellent.
Concentration of the polypropylene amine molecule in modification liquid is 0.01-100mg/mL；Preferably 1-10mg/mL.Polypropylene
Concentration of the amine molecule in modification liquid will have a direct impact on the introduction volume of amido, its concentration is controlled to be advisable in 1-10mg/mL, dense
The introduction volume for spending small amido can significantly reduce, and be unfavorable for the promotion of corrosion resistance.
The molecular weight of polypropylene amine molecule is 1000-1000000；Preferably 10000-100000.Using macromolecular
Addition polymerization occurs for the product after polypropylene amine molecule and dissociation, and fractional dose control is advisable in 10000-100000, molecular weight
It crosses conference to be easy that agglomeration occurs in polymerization, molecular weight is too small, will affect the in-situ polymerization crosslinking of coating.
Further, reaction temperature of the substrate in modification liquid is 0-100 DEG C, preferably 20-40 DEG C；Reaction time is 1
- 10 days seconds, preferably 8-15h.Reaction temperature and reaction time of the substrate in modification liquid do not do excessive limitation, reaction rate ten
Point rapidly, polymerization reaction can be completed in a short time, control is advisable in 8-15h, at this time the introduction volume of fully reacting amido compared with
For ideal.
The embodiment of the present invention also provides a kind of material with acid and alkali-resistance oxidation-resistant coating, including substrate and acid and alkali-resistance oxytolerant
Change coating, acid and alkali-resistance oxidation-resistant coating is prepared by above-mentioned preparation method.The covalent bond as present in coating makes material
Corrosion resistance significantly increases, and can adapt to harsh application environment.
Preferably, the polymer coated remained on surface of phenol amine has a large amount of primary amine groups；Amido has good reactivity,
The application range of material is widened.The material with acid and alkali-resistance oxidation-resistant coating can be in preparing anticorrosive oxidation-resistant material
Application.
Preferably, phenol amine it is polymer coated in amine groups content be 60-160nmol/cm2, through the embodiment of the present invention in mention
The amine groups content in coating that the method for confession is prepared is substantially in 60-160nmol/cm2, method particularly includes: the polymerization of phenol amine applies
Layer is formed by catechol or plant polyphenol in substrate surface auto polymerization, after amido is dissociated under basic conditions by phenol amine is polymer coated
It is formed with more than first amine molecule addition polymerization, the detailed step being referred in the embodiment of the present invention.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment provides a kind of preparation methods of acid and alkali-resistance oxidation-resistant coating comprising following steps:
First is formed firstly, dopamine (1mg/mL) is dissolved in the trishydroxymethylaminomethane buffer solution of 1.2mg/mL
Stainless steel substrates are impregnated in the first modification liquid under conditions of 37 DEG C and form first coating for 24 hours by modification liquid, and are carried out 3 times and surpassed
Sound cleaning, cleaning 3 minutes every time, then with being dried with nitrogen.
Secondly, using molecular weight be 17000 polypropylene amine and sodium hydroxide as raw material configure the second modification liquid, wherein second
The pH value of modification liquid is 12, and the concentration of polypropylene amine (PAa) is 2mg/mL.Under the conditions of 37 DEG C of temperature, formation first is applied
The substrate of layer impregnates 12 hours in the second modification liquid.
Finally, substrate is cleaned by ultrasonic after taking out in the second modification liquid with distilled water, then in N2Under the conditions of it is dry.
Embodiment 2
The present embodiment provides a kind of preparation methods of acid and alkali-resistance oxidation-resistant coating comprising following steps:
First is formed firstly, dopamine (1mg/mL) is dissolved in the trishydroxymethylaminomethane buffer solution of 1.2mg/mL
Stainless steel plate is impregnated in the first modification liquid under conditions of 37 DEG C and forms first coating for 24 hours by modification liquid, and is carried out 3 times and surpassed
Sound cleaning, cleaning 3 minutes every time, then with being dried with nitrogen.
Secondly, using molecular weight be 100000 polypropylene amine and potassium hydroxide as raw material configure the second modification liquid, wherein the
The pH value of two modification liquids is 12, and the concentration of polypropylene amine is 1mg/mL.Under the conditions of 100 DEG C of temperature, first coating will be formed
Substrate impregnated 1 second in the second modification liquid.
Finally, substrate is cleaned by ultrasonic after taking out in the second modification liquid with distilled water, then in N2Under the conditions of it is dry.
Embodiment 3
The present embodiment provides a kind of preparation methods of alkaline-resisting oxidation-resistant coating comprising following steps:
First is formed firstly, dopamine (1mg/mL) is dissolved in the trishydroxymethylaminomethane buffer solution of 1.2mg/mL
Sheet glass is impregnated in the first modification liquid under conditions of 37 DEG C and forms first coating for 24 hours by modification liquid, and carries out 3 ultrasounds
Cleaning, cleaning 3 minutes every time, then with being dried with nitrogen.
Secondly, using molecular weight be 17000 polypropylene amine and potassium hydroxide as raw material configure the second modification liquid, wherein second
The pH value of modification liquid is 12, and the concentration of polypropylene amine is 1mg/mL.Under the conditions of 20 DEG C of temperature, the base of first coating will be formed
Material impregnates 8h in the second modification liquid.
Finally, substrate is cleaned by ultrasonic after taking out in the second modification liquid with distilled water, then in N2Under the conditions of it is dry.
Embodiment 4
The present embodiment provides a kind of preparation methods of alkaline-resisting oxidation-resistant coating comprising following steps:
First is formed firstly, dopamine (1mg/mL) is dissolved in the trishydroxymethylaminomethane buffer solution of 1.2mg/mL
Stainless steel plate is impregnated in the first modification liquid under conditions of 37 DEG C and forms first coating for 24 hours by modification liquid, and is carried out 3 times and surpassed
Sound cleaning, cleaning 3 minutes every time, then with being dried with nitrogen.
Secondly, using molecular weight be 65000 polypropylene amine and sodium hydroxide as raw material configure the second modification liquid, wherein second
The pH value of modification liquid is 14, and the concentration of polypropylene amine is 10mg/mL.Under the conditions of 40 DEG C of temperature, first coating will be formed
Substrate impregnates 12h in the second modification liquid.
Finally, substrate is cleaned by ultrasonic after taking out in the second modification liquid with distilled water, then in N2Under the conditions of it is dry.
Embodiment 5
The present embodiment provides a kind of preparation methods of alkaline-resisting oxidation-resistant coating, and specific steps are roughly the same with embodiment 4,
The difference is that: polypropylene amine is replaced with into polyacrylamide.
Embodiment 6
The present embodiment provides a kind of preparation methods of alkaline-resisting oxidation-resistant coating, and specific steps are roughly the same with embodiment 4,
The difference is that: the first modification liquid by the catechol solution of 3mg/mL, isometric 6mg/mL hexamethylene diamine solution with etc.
The tris solution of the 3.6mg/mL of volume is mixed to form.
Embodiment 7
The present embodiment provides a kind of preparation methods of alkaline-resisting oxidation-resistant coating, and specific steps are roughly the same with embodiment 4,
The difference is that: dopamine solution is replaced with into norepinephrine solution.
Comparative example 1
This comparative example provides a kind of preparation method of coating material, and specific steps include: that dopamine (1mg/mL) is molten
The first modification liquid is formed in the trishydroxymethylaminomethane buffer solution of 1.2mg/mL, stainless steel plate exists under the conditions of 37 DEG C
It is impregnated in first modification liquid and forms first coating for 24 hours, and carry out 3 ultrasonic cleaning, every time cleaning 3 minutes, then with being dried with nitrogen.
First coating is only prepared compared with Example 1.
Comparative example 2
This comparative example provides a kind of preparation method of coating material, and specific steps are roughly the same with embodiment 1, difference
Be in: the second modification liquid is the polypropylene amine solution that concentration is 2mg/mL, i.e. does not include sodium hydroxide in the second modification liquid.
Comparative example 3
This comparative example provides a kind of preparation method of coating material, and specific steps are roughly the same with embodiment 1, difference
Being in: the second modification liquid pH value is 10, i.e. the dosage of sodium hydroxide is reduced in the second modification liquid.
Comparative example 4
This comparative example provides a kind of preparation method of coating material, and specific steps are roughly the same with embodiment 1, difference
It is in the sodium hydroxide for being 12 in: the second modification liquid pH value, is i.e. does not contain more than first amine molecule in the second modification liquid.
Test example 1
The material being prepared in embodiment 1 is carried out to the measurement of coating layer thickness, and is compared with comparative example 1-4,
Middle pDA indicates comparative example 1, and NaOH indicates comparative example 4, and PAa indicates comparative example 2, and NaOH+PAa (pH 10) indicates comparative example 3,
NaOH+PAa (pH12) indicates embodiment 1, and test results are shown in figure 1.Thickness data is obtained by the test of elliptical polarized light instrument.
As shown in Figure 1, in NaOH, that is, comparative example 4, coating can be sent out after the substrate with first coating is handled using highly basic
The thickness of raw dissociation, coating reduces；When containing more than first amine molecule in NaOH+PAa (pH 12) i.e. embodiment 1, in solution,
The monomer or oligomer of dissociation rapid addition polymerization in situ, so that coating layer thickness significantly increases；In comparative example 1-3, due to not having
Alkali participates in or alkalinity is weaker, and when cannot dissociate the first figure layer, the thickness of coating is not changed.
Test example 2
The material being prepared in embodiment 1 is carried out to the measurement of surface amine groups amount, and is compared with comparative example 1-4,
Wherein pDA indicates comparative example 1, and NaOH indicates comparative example 4, and PAa indicates comparative example 2, and NaOH+PAa (pH 10) indicates comparative example 3,
NaOH+PAa (pH12) indicates embodiment 1, and test results are shown in figure 2.Test method: using the amido of coating surface in weak acid
Under the conditions of can with the Electrostatic Absorption acid orange 2 of equimolar amounts, firstly, by coating surface be saturated absorption acid orange 2；Then in weak base
Under the conditions of, the acid orange 2 of Electrostatic Absorption is disintegrated down, the mole by detecting the acid orange 2 being adsorbed on coating calculates
The amido amount of coating surface out.
As shown in Figure 2, pDA, that is, comparative example 1, NaOH, that is, comparative example 4, PAa, that is, comparative example 2 and NaOH+PAa (pH 10) are i.e.
Comparative example 3 the results show that by sodium hydroxide dissociate after coating in amine groups content have a small amount of increase, when do not have alkali participate in or
Person's alkalinity is weaker, and when cannot dissociate the first figure layer, surface can be grafted a certain amount of more than first amine molecule, a degree of
Increase the amido density on surface；But in NaOH+PAa (pH 12) i.e. embodiment 1, the coating after the copolymerization of highly basic polypropylene amine
The amine groups content on surface dramatically increases, and can achieve 150nm/cm2。
Test example 3
The acid-fast alkali-proof oxidation resistance for the material being prepared in testing example 1, and compared with comparative example 1,
Test result is shown in that Fig. 3, pDA indicate comparative example 1, and PADA indicates embodiment 1, and thickness is obtained by the test of elliptical polarized light instrument.
From the figure 3, it may be seen that increased by the amido amount of first coating and polypropylene amine polymerization reaction rear surface after dissociation
In the case of, the acid-fast alkali-proof oxidation resistance of material greatly promotes, this is because the second reaction solution turns the secondary or physical bond in coating
Become the result of chemical bond.
Test example 4
The amido amount on 7 floating coat surface of testing example 1, embodiment 6 and embodiment, is as a result shown in Fig. 4, shows respectively poly-
Dopamine coating (pDA), catechol and hexamethylene diamine coating (pCL+HD), the amido amount of poly- noradrenaline element coating (pNE)
Test result.
As shown in Figure 4, by sodium hydroxide addition polymerization allylamine, treated that first coating shows amine groups content is significant
Increased trend, the method provided suitable for the embodiment of the present invention introduce amido, show that the present invention can be widely applied to
First coating is other catechols/polyphenol coating.
In conclusion a kind of preparation method of acid and alkali-resistance oxidation-resistant coating provided by the invention, by heavy in substrate surface
Product catechol/plant polyphenol coating, that is, first coating, is then dissociated into monomer or oligomer for first coating using highly basic,
While dissociation, using after the amido of more than first amine molecule and dissociation monomer or oligomer carry out addition reaction, thus former
Position polymerize again.In this way, the physics assembling in coating is changed into chemical crosslinking, acid and alkali-resistance, the resistance to oxidation of material are improved
And abrasion resistance properties.
A kind of material with acid and alkali-resistance oxidation-resistant coating provided by the invention, including substrate and deposition phenol on base material
Amine is polymer coated, wherein using more than first amine molecule amido and phenol amine it is polymer coated in molecule carry out covalent bond knot
It closes, improves acid and alkali-resistance, resistance to oxidation and the abrasion resistance properties of material, while the introducing of amido contains carboxyl etc. convenient for subsequent introducing
Functional molecular.The above-mentioned material with acid and alkali-resistance oxidation-resistant coating is due to having good acid and alkali-resistance, resistance to oxidation and wear resistance
It can be applied in preparing anticorrosive oxidation-resistant material.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of acid and alkali-resistance oxidation-resistant coating, which comprises the steps of:
Substrate with first coating is reacted in modification liquid, forms acid and alkali-resistance oxidation-resistant coating on substrate；
Wherein, the first coating is polyphenol or phenol amine coating, includes for dissociating the first coating in the modification liquid
First composition and second composition for carrying out rapid addition polymerization in situ with the product after dissociation；
Preferably, the second composition has functional group；
Preferably, the first composition is highly basic, and the second composition is more than first amine molecule；
Preferably, the pH value of the modification liquid is 11-14.
2. the preparation method of acid and alkali-resistance oxidation-resistant coating according to claim 1, which is characterized in that the first polyamines class
Molecule is polypropylene amine molecule；
Preferably, one of amido, sulfydryl or a variety of are contained on the long-chain of the polypropylene amine molecule；
Preferably, the polypropylene amine molecule is selected from polyallylamine and/or polyacrylamide.
3. the preparation method of acid and alkali-resistance oxidation-resistant coating according to claim 2, which is characterized in that the polypropylene amine
Concentration of the molecule in the modification liquid is 0.01-100mg/mL；Preferably 1-10mg/mL；
Preferably, the molecular weight of the polypropylene amine molecule is 1000-100000；Preferably 10000-100000.
4. the preparation method of acid and alkali-resistance oxidation-resistant coating according to claim 1, which is characterized in that in the modification liquid
Any one or more of highly basic in sodium hydroxide, potassium hydroxide and barium hydroxide.
5. the preparation method of acid and alkali-resistance oxidation-resistant coating according to claim 1, which is characterized in that the substrate is described
Reaction temperature in modification liquid is 0-100 DEG C, preferably 20-40 DEG C；
Reaction time is -10 days 1 second, preferably 8-15h.
6. the preparation method of alkaline-resisting oxidation-resistant coating according to claim 1, which is characterized in that the choosing of the first coating
From poly-dopamine coating or composite coating；Wherein, the composite coating is more than second amine molecule and the painting that polymerized monomer is formed
Layer.
7. the preparation method of acid and alkali-resistance oxidation-resistant coating according to claim 6, which is characterized in that the polymerized monomer choosing
Do not have from catechol, pyrogallol, epicatechin, L-Epicatechin gallate, epigallocatechin, epigallocatechin
It is any one in infanticide acid esters, norepinephrine, levodopa, dextrorotation DOPA, gallic acid and its derivative and tannic acid
Kind is a variety of.
8. the preparation method of acid and alkali-resistance oxidation-resistant coating according to claim 6, which is characterized in that the second polyamines class
Any one or more of molecule in ethylenediamine, propane diamine and hexamethylene diamine.
9. a kind of material with acid and alkali-resistance oxidation-resistant coating, which is characterized in that including substrate and acid and alkali-resistance oxidation-resistant coating, institute
Acid and alkali-resistance oxidation-resistant coating is stated to be prepared by preparation method of any of claims 1-8；
Preferably, there are primary amine groups on the polymer coated surface of phenol amine；
Preferably, the phenol amine it is polymer coated in content of primary amine group be 60-160nmol/cm2。
10. the material according to claim 9 with alkaline-resisting oxidation-resistant coating is in preparing anticorrosive oxidation-resistant material
Using.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454592A (en) * | 2020-04-08 | 2020-07-28 | 浙江恒澜科技有限公司 | Modified titanium dioxide and preparation method and application thereof |
| CN112870437A (en) * | 2021-01-18 | 2021-06-01 | 成都鼎峰前瞻科技有限公司 | Functional material with anticoagulation, anti-hyperplasia and endothelialization promotion functions, and preparation method and application thereof |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111454592A (en) * | 2020-04-08 | 2020-07-28 | 浙江恒澜科技有限公司 | Modified titanium dioxide and preparation method and application thereof |
| CN111454592B (en) * | 2020-04-08 | 2021-11-12 | 浙江恒澜科技有限公司 | Modified titanium dioxide and preparation method and application thereof |
| CN112870437A (en) * | 2021-01-18 | 2021-06-01 | 成都鼎峰前瞻科技有限公司 | Functional material with anticoagulation, anti-hyperplasia and endothelialization promotion functions, and preparation method and application thereof |
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