CN105418821B - Function protecting surfacing with well attached performance and preparation method thereof - Google Patents
Function protecting surfacing with well attached performance and preparation method thereof Download PDFInfo
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- CN105418821B CN105418821B CN201510969491.5A CN201510969491A CN105418821B CN 105418821 B CN105418821 B CN 105418821B CN 201510969491 A CN201510969491 A CN 201510969491A CN 105418821 B CN105418821 B CN 105418821B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/58—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide containing oxygen in addition to the carbonamido oxygen, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine
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Abstract
The invention discloses a kind of N (3,4 dihydroxy phenyl) ethyl methacrylamide copolymer and preparation method thereof.The present invention is modified using the method for copolymerization using dopamine and fluorochemical as raw material with fluorochemical to dopamine, prepares the copolymer comprising fluorine compounds side chain and catechol anchoring group side chain.On the one hand the copolymer has the catechol anchoring group of dopamine, there is provided good adhesion property；On the other hand possess functional fluoropolymer group, there is weatherability, antiseptic property and hydrophobic oleophobic performance, be greatly enhanced the barrier propterty of function protecting coating.The invention also discloses the function protecting surfacing with well attached performance, and the N (3,4 dihydroxy phenyl) ethyl methacrylamide copolymer is obtained by soaking self assembly in material surface.The material has good barrier propterty, ultra-hydrophobicity, antifouling property and adhesion property；Substrate is applied widely；Nontoxic pollution-free.
Description
Technical field
The invention belongs to Material Field, and in particular to a kind of function protecting surfacing, more particularly to it is a kind of with good
Function protecting surfacing of adhesion property and preparation method thereof.
Background technology
Accelerate with the developing rapidly of marine economy, using the process of ocean space, ocean structure engineering such as breakwater, code
The applications such as head, off-shore airport, seabed tunnel and bridge spanning the sea are more and more extensive.At the same time, due to seawater long period of soaking, invade
The impact of erosion, stormy waves and tide, the etching problem of ocean structure engineering is also increasingly prominent, seriously endangers ocean structure engineering
Security and durability.Therefore, the corrosion protection problem of ocean structure is more and more taken seriously.At present, to ocean structure work
, it is necessary to ensure durability of the ocean structure in the whole service life phase, this is tied the century-old safe service demand that journey proposes to ocean
The guard technology of structure engineering proposes severe challenge.
Coating technology is that ocean structure protects important and effective method.Conventional ocean structure protective coating has continued to use metal
Protective materials, typically using coating such as chlorinated rubber, polyurethane, chlorosulfonated polyethylene and epoxies.However, the synthesis of these coating
Performance is not met by the requirement of harsh marine environment to a certain extent.At present, ocean structure protective coating still has many
The theory and technology problem not solved, wherein it is the most key the problem of be how to improve the difference such as coating and metal, concrete
The adhesive force of base material.It is hot and humid, outdoor be exposed to the sun and the complex environment influence factor such as salt fog under, it is most normal that coating interface, which comes off,
The protection failure mode seen, the barrier propterty of coating is influenceed very big.Therefore, research is applicable with well attached performance and substrate
Property wide function protecting surfacing, to instruct engineering practice, delay base material corrosion rate, ensure engineering structure service life,
Engineering structure security, reduction the coating protection failure caused by adhesion problem is improved to have great importance.
The protective action of organic coating shows the side such as shielding action possessed by coating, wet tack and corrosion inhibition
Face.Protection failure has many reasons：The chemical erosion (degraded) of medium, the physical dissolution of medium and swelling, medium is in the coating
Diffusion and holiday caused by local failure；These will all cause the reduction of coating corrosion resistance energy.Wherein, apply
Layer degradation with aging and corrosive medium are the diffusion of coat inside is coating failure the main reason for.(1) it is exposed to harsh ocean
Due to being influenceed by environmental factors such as illumination, humidity and temperature degradation with aging occurs for the protective coating in environment, causes to protect
Coating failure；(2)Na+、Cl-、SO4 2-Plasma then carries out diffusion by coating, makes base material corrosion failure, causes coating to lose
Effect.For these reasons, if coating has hydrophobicity, the anti-Ionic diffusion and permeability of coating can be greatly improved.
Catechol group with strong adhesion is a side chain of dopamine, and it is widely present in glutinous in mussel
In attached albumen.Because it has the function that great in distinct faces anchoring molecule, the polymer with this structure is shown pair
A series of different materials surfaces (surface for including moistening) all have good interfacial adhesion intensity.Therefore, using dopamine film
The method for preparing anti-corrosion film on metal surface has been reported.This dopamine film possesses that adhesion property is good, processing method is easy
Advantage, and show certain antiseptic property.Application for a patent for invention CN200910019178.X provides a kind of " metal surface
The preparation method of anti-corrosion film "；Dopamine is dissolved in three (methylol) aminomethane hydrochlorides or phosphatic water by this method
In solution, stirring, metal is immersed, 12~90h of contact takes out, and uses deionized water rinsing；Nitrogen is put into containing alkanethiol after drying
In solution, taken out at 20~30 DEG C after 24~48h of water-bath, with the solvent washing of the above-mentioned solution containing alkanethiol；After nitrogen is dried, i.e.,
Anti-corrosion film can be formed on the metal surface.This method can be readily formed stable anticorrosion film on the metallic substrate, glue
It is strong to tie power, it is not necessary to the longer reaction time, it is not necessary to metal is performed etching, prepared anti-corrosion film on metal surface is prevented
Corrosive nature is good, and protective efficacy is up to 99%.But the dopamine film prepared in these reports only has good Corrosion Protection,
And without other barrier propterties such as super-hydrophobicity, antifouling.In the marine environment of complexity, metal and concrete surface are also faced with
A variety of corrosion, have further requirement to the multifunction of protective coating.
Fluorochemical has good weatherability and chemical resistance, and its surface energy is relatively low, has hydrophobic oleophobic
Property, it is highly suitable for preparing protective materials.At present, the preparation of fluorinated copolymer and performance study are largely reported.But by
In the relatively low polarizability of fluorine atom, strong electronegativity, the very strong C-F bond energys of less van der Waals radius, so fluorinated copolymer
Dissolubility it is relatively poor, the copolymer of fluorochemical and dopamine does not dissolve in any solvent easily, prevent its from by altogether
Copolymer solution infusion method is modified in material surface.Therefore, for the preparation of this fluorochemical and dopamine copolymer, its is molten
The control of solution property is most important.At present, also reported without researcher with regard to this progress is disclosed.
The content of the invention
The present invention is entered using dopamine and fluorochemical as raw material using the method fluorochemical of copolymerization to dopamine
Row is modified, and prepares the copolymer comprising fluorine compounds side chain and catechol anchoring group side chain.On the one hand the copolymer has
There is the catechol anchoring group of dopamine, it is possible to provide good adhesion property；On the other hand possess functional fluoropolymer group, have
Weatherability, antiseptic property and hydrophobic oleophobic performance, the barrier propterty of function protecting coating can be greatly enhanced.
Technical scheme：N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, the copolymer
Structural formula be：
Described N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, is prepared by the following method：
1. weigh appropriate 3- (trifluoromethyl) styrene, N- (3,4- dihydroxy phenyls) Ethyl-Methyl acrylamide, stannous chloride,
Bipy 2,2' bipyridyl and benzyl bromide a-bromotoluene；2. by step, 1. ready material is added in toluene, and atmosphere of inert gases is protected, 50 DEG C -70
DEG C temperature conditionss under stirring reaction 1-8h；3. to step, 2. reacted solution is evaporated processing, and washing removal is attached to
The solvent of precipitation surface obtains product；The reaction equation of the step 2. is as shown in Eq.1.
Wherein, count in parts by weight, 3- (trifluoromethyl) styrene is 3~6 parts, N- (3, the 4- dihydroxy benzenes
Base) Ethyl-Methyl acrylamide is 0.1~0.4 part, the stannous chloride is 0.01-0.06 parts, described 2,2 '-bipyridyl is
0.1~0.4 part, the benzyl bromide a-bromotoluene is 0.03~0.06 part.
Wherein, 3. the method for the washing is to be respectively washed 2-4 times using methanol and acetone to step.
The reaction mechanism that N- (3,4- dihydroxy phenyls) Ethyl-Methyl acrylamide copolymer is prepared in the present invention is：With
Stannous chloride and 2,2 '-bipyridyl are catalyst, the atom transition free radical polymerization reaction that benzyl bromide a-bromotoluene triggers.The present invention selects
Containing special construction (phenyl ring) and the less fluorochemical monomer of molecular weight, its point is accurately controlled using the method for free radical controllable polymerization
Son amount so that the fluorinated copolymer of preparation has good dissolubility in toluene, its self assembly can be existed by infusion method
Material surface.Using fluorochemical as monomer, after being copolymerized with dopamine, the protection of dopamine film can be further lifted
Performance, dopamine film is set to add hydro-oleophobicity and antifouling property on the basis of anti-corrosive properties.
Function protecting surfacing with well attached performance, by N- (3,4- dihydroxy phenyl) Ethyl-Methyl propylene
The material that amide copolymer is obtained by soaking self assembly in material surface.
The preparation method of function protecting surfacing with well attached performance, comprises the following steps：1. weigh appropriate
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is molten to be configured to the toluene that concentration is 0.02~0.12g/mL
Liquid；2. pending material is put into 1. solution that step is prepared, 10~30h is soaked, that is, obtains that there is well attached performance
Function protecting surfacing.
Wherein, the pending material is aluminium, iron, steel, ceramics or concrete.
Beneficial effects of the present invention：
(1) copolymer synthesized by the present invention is applicable extensive substrate, environmental protection, has good barrier propterty；And and substrate
Surface has firm chemical bonding, therefore the prospect that is widely used；
(2) present invention process is simple, only need to be by can be obtained by the work(with well attached performance after simply soaking
Can protection coating material.
(3) function protecting surfacing prepared by the present invention has good barrier propterty, ultra-hydrophobicity, antifouling property
And adhesion property；Substrate is applied widely；Nontoxic pollution-free, natural environment will not be impacted.
Figure of description
Fig. 1 is the microphotograph that microalgae cell attaches to material surface.
Embodiment
With reference to embodiment, the present invention is described further.
Embodiment 1：
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, the structural formula of the copolymer are：
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, is prepared by the following method：1. by weight
Measure number meter, weigh 3 parts of 3- (trifluoromethyl) styrene, 0.2 part of N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide,
0.03 part of stannous chloride, 0.4 part 2,2 '-bipyridyl, 0.03 part of benzyl bromide a-bromotoluene；2. taking the toluene of prior drying process, it is passed through
Argon gas 15min；By step, 1. ready material is added in described toluene, is stirred under argon gas protection, under 50 DEG C of temperature conditionss
Mix reaction 6h；Reaction equation is as shown in Eq.1.3. to step, 2. reacted solution is evaporated processing, then using methanol
It is respectively washed 4 times with acetone, the solvent that removal is attached to precipitation surface obtains product.It is 10g per parts by weight.
The reaction mechanism that N- (3,4- dihydroxy phenyls) Ethyl-Methyl acrylamide copolymer is prepared in the present invention is：With
Stannous chloride and 2,2 '-bipyridyl are catalyst, the atom transition free radical polymerization reaction that benzyl bromide a-bromotoluene triggers.The present invention selects
Containing special construction (phenyl ring) and the less fluorochemical monomer of molecular weight, its point is accurately controlled using the method for free radical controllable polymerization
Son amount so that the fluorinated copolymer of preparation has good dissolubility in toluene, its self assembly can be existed by infusion method
Material surface.Using fluorochemical as monomer, after being copolymerized with dopamine, the protection of dopamine film can be further lifted
Performance, dopamine film is set to add hydro-oleophobicity and antifouling property on the basis of anti-corrosive properties.
Function protecting surfacing with well attached performance, by N- (3,4- dihydroxy phenyl) Ethyl-Methyl propylene
The material that amide copolymer is obtained by soaking self assembly in material surface.Its preparation method, comprise the following steps：1. weigh suitable
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer is measured, is configured to the toluene solution that concentration is 0.02g/mL；②
Pending concrete is put into 1. solution that step is prepared, soaks 30h, that is, obtain that there is the function of well attached performance to prevent
Protect surfacing.
Embodiment 2：
As different from Example 1, N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, by following
Method is prepared：1. counting in parts by weight, 4 parts of 3- (trifluoromethyl) styrene, 0.3 part of N- (3,4- dihydroxy phenyl) are weighed
Ethyl-Methyl acrylamide, 0.06 part of stannous chloride, 0.1 part 2,2 '-bipyridyl, 0.04 part of benzyl bromide a-bromotoluene；2. take at drying in advance
The toluene of reason, argon gas 5min is passed through to it；By step, 1. ready material is added in toluene, atmosphere of inert gases protection, 60
DEG C temperature conditionss under stirring reaction 8h.3. to step, 2. reacted solution is evaporated processing, then using methanol and third
Ketone is respectively washed 2 times, and the solvent that removal is attached to precipitation surface obtains product.
The preparation method of function protecting surfacing with well attached performance, comprises the following steps：1. weigh appropriate
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is configured to the toluene solution that concentration is 0.05g/mL；2. will
Pending ceramic material is put into 1. solution that step is prepared, is soaked 20h, that is, is obtained that there is the function of well attached performance to prevent
Protect surfacing.
Embodiment 3：
As different from Example 1, N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, by following
Method is prepared：1. counting in parts by weight, 5 parts of 3- (trifluoromethyl) styrene, 0.4 part of N- (3,4- dihydroxy phenyl) are weighed
Ethyl-Methyl acrylamide, 0.01 part of stannous chloride, 0.2 part 2,2 '-bipyridyl, 0.05 part of benzyl bromide a-bromotoluene；2. take at drying in advance
The toluene of reason, argon gas 10min is passed through to it；By step, 1. ready material is added in toluene, atmosphere of inert gases protection, 70
DEG C temperature conditionss under stirring reaction 1h.3. to step, 2. reacted solution is evaporated processing, then using methanol and third
Ketone is respectively washed 3 times, and the solvent that removal is attached to precipitation surface obtains product.
The preparation method of function protecting surfacing with well attached performance, comprises the following steps：1. weigh appropriate
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is configured to the toluene solution that concentration is 0.08g/mL；2. will
Pending Steel material is put into 1. solution that step is prepared, is soaked 15h, that is, is obtained the function protecting with well attached performance
Surfacing.
Embodiment 4：
As different from Example 1, N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, by following
Method is prepared：1. counting in parts by weight, 6 parts of 3- (trifluoromethyl) styrene, 0.1 part of N- (3,4- dihydroxy phenyl) are weighed
Ethyl-Methyl acrylamide, 0.02 part of stannous chloride, 0.3 part 2,2 '-bipyridyl, 0.06 part of benzyl bromide a-bromotoluene；2. take at drying in advance
The toluene of reason, argon gas 12min is passed through to it；By step, 1. ready material is added in toluene, atmosphere of inert gases protection, 55
DEG C temperature conditionss under stirring reaction 5h.3. to step, 2. reacted solution is evaporated processing, then using methanol and third
Ketone is respectively washed 4 times, and the solvent that removal is attached to precipitation surface obtains product.
The preparation method of function protecting surfacing with well attached performance, comprises the following steps：1. weigh appropriate
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is configured to the toluene solution that concentration is 0.010g/mL；②
Pending iron material is put into 1. solution that step is prepared, soaks 12h, that is, obtain that there is the function of well attached performance to prevent
Protect surfacing.
Embodiment 5：
As different from Example 1, N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, by following
Method is prepared：1. counting in parts by weight, 3.5 parts of 3- (trifluoromethyl) styrene, 0.2 part of N- (3,4- dihydroxy benzenes are weighed
Base) Ethyl-Methyl acrylamide, 0.04 part of stannous chloride, 0.3 part 2,2 '-bipyridyl, 0.05 part of benzyl bromide a-bromotoluene；2. take dry in advance
The toluene of dry processing, argon gas 8min is passed through to it；By step, 1. ready material is added in toluene, and atmosphere of inert gases is protected
Stirring reaction 4h under shield, 65 DEG C of temperature conditionss.3. to step, 2. reacted solution is evaporated processing, then using methanol
It is respectively washed 2 times with acetone, the solvent that removal is attached to precipitation surface obtains product.
The preparation method of function protecting surfacing with well attached performance, comprises the following steps：1. weigh appropriate
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is configured to the toluene solution that concentration is 0.12g/mL；2. will
Pending aluminum is put into 1. solution that step is prepared, is soaked 10h, that is, is obtained the function protecting with well attached performance
Surfacing.
Embodiment 6：
As different from Example 1, N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, by following
Method is prepared：1. counting in parts by weight, 4.5 parts of 3- (trifluoromethyl) styrene, 0.2 part of N- (3,4- dihydroxy benzenes are weighed
Base) Ethyl-Methyl acrylamide, 0.05 part of stannous chloride, 0.4 part 2,2 '-bipyridyl, 0.03 part of benzyl bromide a-bromotoluene；2. take dry in advance
The toluene of dry processing, argon gas 15min is passed through to it；By step, 1. ready material is added in toluene, and atmosphere of inert gases is protected
Stirring reaction 3h under shield, 60 DEG C of temperature conditionss.3. to step, 2. reacted solution is evaporated processing, then using methanol
It is respectively washed 3 times with acetone, the solvent that removal is attached to precipitation surface obtains product.
The preparation method of function protecting surfacing with well attached performance, comprises the following steps：1. weigh appropriate
N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is configured to the toluene solution that concentration is 0.05g/mL；2. will
Pending concrete is put into 1. solution that step is prepared, is soaked 25h, that is, is obtained the function protecting with well attached performance
Surfacing.
Copolymer and the contact angle and adhesive force of function protecting material prepared by the embodiment 1-6 of table 1.
Embodiment 7：
The situation of material surface is attached to using micro- sem observation microalgae cell.(A)：Glass, after immersing algae solution 1h；(B)：
Copolymer modifies slide, after immersing algae solution 1h；(C)：Copolymer modification carries glass, after immersing algae solution 5h；(D)：Copolymer is repaiied
Glass is adornd, after immersing algae solution 10h.Wherein, the cell concentration of algae solution is about 2.1 × 106Individual/mm2.Then, above-mentioned processing will be passed through
Sample be respectively put into the glass measuring cup for being fitted into 10mL nutrient solutions, microphotograph is in detail as shown in Figure 1.
It can be seen from Fig. 1, unmodified glass is immersing algae solution, and after microalgae is deposited in glass surface, microalgae is thin in 1h
Born of the same parents just mushroom out division, form group's (as shown in Figure 1A).And the sheet glass of copolymer modification immerses algae solution, microalgae cell sinks
Drop is after glass surface, until after 10h, microalgae has no obvious growth and division, does not form group (such as Figure 1B, 1C, 1D institute
Show).Thus prove, the copolymer of glass surface can effectively suppress the growth of microalgae cell, have good antifouling property.
Claims (5)
1.N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, it is characterised in that：The structural formula of the copolymer
For：
The copolymer is prepared by the following method：1. weigh appropriate 3- (trifluoromethyl) styrene, N- (3,4- dihydroxies
Base phenyl) Ethyl-Methyl acrylamide, stannous chloride, bipy 2,2' bipyridyl and benzyl bromide a-bromotoluene；2. by step 1. ready material
Add in toluene solution, stirring reaction 1-8h under argon atmosphere protection, 50 DEG C of temperature conditionss；It is 3. 2. reacted molten to step
Liquid is evaporated processing, and product is obtained after washing；The reaction equation of the step 2. is：
Wherein, count in parts by weight, 3- (trifluoromethyl) styrene is 3~6 parts, N- (3, the 4- dihydroxy phenyl) second
Base-Methacrylamide is 0.1~0.4 part, and the stannous chloride be 0.01-0.06 parts, described 2,2 '-bipyridyl for 0.1~
0.4 part, the benzyl bromide a-bromotoluene is 0.03~0.06 part.
2. N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer according to claim 1, its feature exist
In：The method of the washing is to be respectively washed 2-4 times using methanol and acetone.
3. the function protecting surfacing with well attached performance, it is characterised in that：By described in claim 1 or 2 N- (3,
4- dihydroxy phenyls) material that is obtained by soaking self assembly in material surface of Ethyl-Methyl acrylamide copolymer.
4. the preparation method of the function protecting surfacing with well attached performance described in claim 3, it is characterised in that：
Comprise the following steps：1. weighing appropriate N- (3,4- dihydroxy phenyl) Ethyl-Methyl acrylamide copolymer, being configured to concentration is
0.02~0.12g/mL toluene solution；2. pending material is put into 1. solution that step is prepared, 10~30h is soaked,
Obtain the function protecting surfacing with well attached performance.
5. the preparation method of the function protecting surfacing according to claim 4 with well attached performance, its feature
It is：The pending material is aluminium, iron, steel, ceramics or concrete.
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| CN107446401B (en) * | 2017-04-01 | 2019-08-20 | 华南理工大学 | Using dopamine as high hydrophobicity anti-bacterial attachment surface of anchor molecule and preparation method thereof |
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| CN101781161B (en) * | 2009-01-20 | 2013-11-27 | 上海开拓者化学研究管理有限公司 | Method for preparing trifluoromethyl styrene compound |
| CN101658837A (en) * | 2009-09-24 | 2010-03-03 | 中国海洋大学 | Preparation method of anticorrosive film for metal surface |
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