CN107641422B - A kind of preparation method of efficient graphene hot melt anticorrosive paint - Google Patents
A kind of preparation method of efficient graphene hot melt anticorrosive paint Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/04—Homopolymers or copolymers of ethene
- C09D123/08—Copolymers of ethene
- C09D123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09D123/0853—Vinylacetate
- C09D123/0861—Saponified vinylacetate
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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Abstract
The present invention relates to the preparing technical fields of anticorrosive paint, provide a kind of preparation method of graphene hot melt anticorrosive paint, it is characterized in that preparing ethylene-vinyl alcohol copolymer presoma first, and with coupling agent modified graphene oxide further in high pressure, the association reaction of silane and ethylene-vinyl alcohol copolymer presoma is completed in heating under conditions of at the uniform velocity stirring, it is incorporated in graphene oxide surface layer with ethylene-vinyl alcohol copolymer presoma and coupling agent and forms dense film, greatly improve the dispersibility of graphene oxide, keep it uniform, stable being scattered in resin forms graphene hot melt anticorrosive paint.
Description
Technical field
The present invention relates to the preparing technical fields of anticorrosive paint, and in particular to a kind of preparation of graphene hot melt anticorrosive paint
Technology.
Background technology
For anticorrosive paint, traditional defense coating is limited to own material property and technique, the corruption to metallic matrix
Erosion protective action is often not satisfactory, and the exsertile cost of individual is again very high, reduces the cost performance of coating, and suitable one
Divide coating because of the heavy metals such as leaded zinc or chromate or noxious material, there are certain risk of environmental pollution, also consumes a large amount of
Non-renewable resources, be unfavorable for the sustainable development of social economy.Therefore, the anticorrosion for developing all kinds of New-type long-acting environmental protection applies
Material becomes new hot spot.
Graphene is extensively and unique performance presents its great potential in metal material corrosion-resistant field.First, graphite
The sp that alkene is stablized2Hybrid structure can form Physical barriers between metal and active medium, prevent the progress of scattering and permeating；
Secondly, graphene has good thermal stability and chemical stability, whether under the high temperature conditions（Up to 1500 DEG C）, also
It is that can keep stabilization in corrosion or the gas of oxidisability, liquid environment.In addition, the good conductive, heat conduction of graphene
The environment that performance is on active service to metal provides advantage.Graphene still most thin so far material, to base metal
Influence can be ignored.High intensity and good tribological property are also had both simultaneously, electric conductivity or resistance to can not only be improved
Salt fog performance, moreover it is possible to further decrease coating layer thickness, increase the adhesive force to base material, promote the wearability of coating.
Not only there is epoxy by adding new coating prepared by graphene on the basis of common corrosion-resistant epoxy paint
Cathodic protection effect, the screen effect of glass-flake coating of zinc-rich paint, with more good toughness, strong adhesive force, water-tolerant,
The features such as hardness is high not only has on the basis of common corrosion-resistant epoxy paint by adding new coating prepared by graphene
Cathodic protection effect, the screen effect of glass-flake coating of epoxy zinc-enriched paint, with more good toughness, strong adhesive force, water-fast
Property it is good, hardness is high the features such as, antiseptic property be more than existing anticorrosive paint, can be widely applied to ocean engineering, traffic fortune
The coating protection in the fields such as defeated, large industry equipment and municipal facilities.Coating is prepared with graphene to improve metal corrosion resistant
Potential in terms of corrosion, on the surface of copper and mickel, the graphite experiment of alkene proves, when being cultivated with chemical vapor deposition, the corruption of copper
Erosion speed slows down 7 times, slow 4 times of the corrosion rate of nickel.These discoveries illustrate that graphene is known most thin erosion shield.Therefore,
Graphene will become optimal corrosion-inhibiting coating.
The conjugated structure of graphene causes it poor with the compatibility of water, organic solvent and polymer, thus increases
Its application difficulty in paint field.Reunite since graphene will produce itself, destroy uniformity, the compactness of its dispersion,
It is applied to reunite when coating, and stress concentration is generated inside film, mechanical performance is caused to decline, and then leads to that coating is made
Anti-corrosion effect is poor, and barrier property is undesirable.
Invention content
Compatibility for graphene for anticorrosive paint and polymer is poor, itself reunites, and destroys the uniform of its dispersion
Property, the defect of compactness, the present invention proposes a kind of preparation method of graphene heat molten type anticorrosive paint, by using ethylene-second
Enol copolymer predecessor, graphene uniform is dispersed to inside coating, final to assign the good anti-corrosion effect of coating.It can solve
Presently, there are due to graphene be produced from reunion caused by anticorrosion with coat effect it is poor, the poor deficiency of barrier property.
To achieve the above object, it adopts the following technical scheme that：
A kind of preparation method of graphene hot melt anticorrosive paint, it is characterised in that prepare ethylene-vinyl alcohol copolymer forerunner
Body, and be granulated through reactive extrursion after being mixed with coupling agent modified graphene oxide, finally particulate abrasive to dry powder-shaped is added
To obtained graphene heat molten type anticorrosive paint in resin；Specific preparation process is as follows：
（1）After Vinyl Acetate Monomer and solvent are mixed, initiator is added, is uniformly mixed, is added in reaction kettle, leads to
Enter inert gas and raw material deoxygenation is carried out with certain speed stirring simultaneously, vinyl monomer is passed through after deoxygenation and is heated poly-
It closes, obtains ethylene-vinyl alcohol copolymer presoma；The solvent is made of methanol, ethyl alcohol, the tert-butyl alcohol with arbitrary proportion；
The mass ratio of the Vinyl Acetate Monomer, solvent is 1:1.5~3；The initiator is azodiisobutyronitrile or peroxide
Change any one in neodecanoic acid spy's pentyl ester, additive amount is the 0.2 ~ 1% of Vinyl Acetate Monomer and solvent gross mass；
（2）It is 10 by graphene oxide and silane coupling agent example in mass ratio:1 ~ 3 is uniformly mixed simultaneously ultrasonic disperse processing
Afterwards, heating water bath and be stirred to react after a certain period of time rinse, dry up, it is for use to obtain coupling agent modified graphene oxide；
（3）By step（2）Obtained silane coupler modified graphene oxide and step（1）Ethylene vinyl alcohol copolymer
Object presoma is 1 by charged material weight ratio:5 ~ 8, in high pressure, is heated under conditions of at the uniform velocity stirring and complete silane and ethylene-vinyl alcohol
The association reaction of copolymer presoma cuts after extrusion and is granulated, and obtains the compound of graphene oxide and ethylene-vinyl alcohol copolymer
Composition granule；
（4）By step（3）Obtained particle is refined into dry powder in micronizer, and sieving sub-elects the micro- of suitable particle diameter
Grain, particle is mixed, obtain graphene heat molten type anticorrosive paint with resin in proportion.
Preferably, step（2）The silane coupling agent is 3- aminopropyl trimethoxysilanes, 3- aminopropyl-triethoxies
Silane, N-（2- aminoethyls）- 3- aminopropyls-trimethoxy silane, N-（2- aminoethyls）In -3- aminopropyls-triethoxysilane
It is one or more.
Preferably, step（1）The deoxygenation mixing speed is 100 ~ 120rpm, continues 10 ~ 15min.
Preferably, step（1）The intake of the vinyl monomer is to make the pressure of reaction kettle in 30 ~ 50bar.
Preferably, step（1）The described heating polymerization temperature being passed through after vinyl monomer is 65 ~ 75 DEG C.
Preferably, step（1）The heating polymerization time is 4 ~ 6 hours.
Preferably, step（3）The high pressure is 2-3MPa, and heating temperature is 75 ~ 85 DEG C, and the association reaction time is 4 ~ 5
Hour.
Preferably, step（4）The particle diameter sub-elected after the crushing is at 10 ~ 30 microns.
Preferably, step（4）The resin is at least one of epoxy resin, polyurethane resin, alkyd resin.
Preferably, step（4）The ratio of the particle and resin is mass ratio 1:2~5.
The oleophylic performance of graphene oxide can be improved in the modification technologies such as generally use surface decarboxylate, de-hydroxylated, increases
Its strong dispersibility in oil paint system, but effect is limited, the graphene oxide after surface treatment in a short time can be compared with
Good dispersion, but when left between extend after often there is the phenomenon that coating layering, uneven color, lead to coating and substrate
Binding force declines, weatherability, the service life reduction of coating.The present invention utilizes aminosilane coupling agent modifying graphene oxide, then
It is incorporated in graphene oxide surface layer with ethylene-vinyl alcohol copolymer presoma and coupling agent and forms dense film, greatly improves
The dispersibility of graphene oxide, make its can uniformly, being scattered in resin of stablizing.By controlling amino silicane coupling agent and oxygen
The ratio of graphite alkene can get the best film forming efficiency of ethylene-propylene alcohol copolymer, make the dispersibility of graphene oxide most
Bigization can get outstanding adhesiveness of the coating to substrate.Since the crosslinked action of graphene oxide makes itself and ethylene-vinyl alcohol
Copolymer closely connects, and crosslinked action is while solving the technical problem of graphene dispersion difference, when being scattered in coating,
This desmachyme being cross-linked to form keeps the dispersion of graphene oxide more stable, finally imparts the good anti-corrosion effect of coating
Fruit.
It is compared with prior art, outstanding the present invention provides a kind of graphene hot melt anticorrosive paint and preparation method
Feature and excellent effect are：
1, the graphene oxide surface layer in anticorrosive paint of the present invention is ethylene-propylene alcohol copolymer film so that it is applied
Dispersibility in material greatly improves, the phenomenon that being not in layering, the uneven color of coating.
2, the present invention is innovatively combined ethylene-propylene alcohol copolymer presoma with graphene oxide, is greatly improved
The crosslinked action of the dispersibility of graphene oxide, simultaneous oxidation graphene makes it closely connect shape with ethylene-vinyl alcohol copolymer
Tissue is reticulated, coating dispersibility is more stable.
3, raw material sources of the present invention are abundant, inexpensive, and preparation process is easy to operate, can carry out continuous high-efficient
Production, the product cost provided is low, and therefore, the technical program has broad application prospects.
Specific implementation mode
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of the step of preparation method of graphene hot melt anticorrosive paint, preparation, is as follows：
It takes Vinyl Acetate Monomer 1kg to be uniformly mixed with 2kg methanol, 5g azodiisobutyronitriles is added as initiator, mix
It closes uniformly, is added in reaction kettle, be passed through nitrogen and raw material deoxygenation is carried out with the stirring of the speed of 100rpm simultaneously, it is lasting
After 12min, deoxygenation terminates, and being passed through vinyl monomer makes reactor pressure stablize in 35bar, and heating carries out polymerisation, temperature liter
To 70 DEG C of heat preservation 4h, during which it is continually fed into vinyl monomer and maintains pressure, cool down after reaction, obtain ethylene vinyl alcohol copolymer
Object presoma.The uniformly mixed simultaneously ultrasonic disperse processing of 3- aminopropyl trimethoxysilanes of 100g graphene oxides, 20g are weighed,
After heating water bath is stirred to react 5h simultaneously to 80 DEG C, filtering is rinsed, drying, and coupling agent modified graphene oxide is obtained.Silane
Coupling agent modified graphene oxide and ethylene-vinyl alcohol copolymer presoma are heated to 80 in 2MPa, under conditions of at the uniform velocity stirring
DEG C heat preservation 2h completes the association reaction of silane and ethylene-vinyl alcohol copolymer presoma, is cut after the preceding hot extrusion of product cooling
It is granulated, obtains the composite particles of graphene oxide and ethylene-vinyl alcohol copolymer.Particle is refined by micronizer
Dry powder, sieving, sub-elects particle of the grain size at 10-30 μm；Dry powder after taking 1kg to be sieved, mixes with 4kg epoxy resin, obtains
Graphene heat molten type anticorrosive paint.
To the graphene heat molten type anticorrosive paint that embodiment 1 obtains, surveyed according to coating standard JIS K5664-2002
Examination, obtains that the results are shown in Table 1, it is seen then that utilizes ethylene-vinyl alcohol copolymer dispersed graphite alkene, the graphene anti-corrosion of acquisition
Coating, impact resistance, acid resistance, alkali resistance and resistance to salt water have reached standard requirement, meanwhile, than traditional graphite olefine resin
Coating has superior corrosion resistance.
Embodiment 2
A kind of the step of preparation method of graphene hot melt anticorrosive paint, preparation, is as follows：
It takes Vinyl Acetate Monomer 1kg to be uniformly mixed with 1.5kg methanol, 0.8g ethyl alcohol, 8g azodiisobutyronitriles is added and make
It for initiator, is uniformly mixed, is added in reaction kettle, be passed through nitrogen and progress raw material is stirred with the speed of 120rpm simultaneously and remove
Oxygen, after continuing 10min, deoxygenation terminates, and being passed through vinyl monomer makes reactor pressure stablize in 50bar, and heating carries out polymerisation,
Temperature rises to 65 DEG C of heat preservation polymerisation 6h, is during which continually fed into vinyl monomer and maintains pressure, cools down after reaction, obtains thick
Product obtains ethylene-vinyl alcohol copolymer presoma after removing residual monomer.Weigh the 3- ammonia of 150g graphene oxides, 30g
Propyl-triethoxysilicane is uniformly mixed and ultrasonic disperse processing, after heating water bath is stirred to react 4h simultaneously to 85 DEG C, filtering, punching
It washes, dry up, obtain coupling agent modified graphene oxide.Silane coupler modified graphene oxide is total to ethylene-vinyl alcohol
Polymers presoma is heated to 85 DEG C of heat preservation 2h in 2.5MPa, under conditions of at the uniform velocity stirring and completes silane and ethylene vinyl alcohol copolymer
The association reaction of object presoma cuts after hot extrusion before product cools down and is granulated, it is total with ethylene-vinyl alcohol to obtain graphene oxide
The composite particles of polymers.Particle is refined into dry powder by micronizer, is sieved, it is micro- at 10-20 μm to sub-elect grain size
Grain；Dry powder after taking 1kg to be sieved, mixes with 2kg epoxy resin, obtains graphene heat molten type anticorrosive paint.
To the graphene heat molten type anticorrosive paint that embodiment 2 obtains, surveyed according to coating standard JIS K5664-2002
Examination, obtains that the results are shown in Table 1, it is seen then that utilizes ethylene-vinyl alcohol copolymer dispersed graphite alkene, the graphene anti-corrosion of acquisition
Coating, impact resistance, acid resistance, alkali resistance and resistance to salt water have reached standard requirement, meanwhile, than traditional graphite olefine resin
Coating has superior corrosion resistance.
Embodiment 3
A kind of the step of preparation method of graphene hot melt anticorrosive paint, preparation, is as follows：
It takes Vinyl Acetate Monomer 1kg to be uniformly mixed with the 2.5kg tert-butyl alcohols, 7g peroxidating neodecanoic acid spy's pentyl ester conducts is added
Initiator is uniformly mixed, is added in reaction kettle, is passed through nitrogen and stirs progress raw material simultaneously with the speed of 110rpm and removes
Oxygen, after continuing 10min, deoxygenation terminates, and being passed through vinyl monomer makes reactor pressure stablize in 30bar, and heating carries out polymerisation,
Temperature rises to 75 DEG C of heat preservation 4h, is during which continually fed into vinyl monomer and maintains pressure, cool down after reaction, obtain crude product, passes through
Ethylene-vinyl alcohol copolymer presoma is obtained after removing residual monomer.Weigh the 3- aminopropyls three of 180g graphene oxides, 20g
The N- of methoxy silane, 30g（2- aminoethyls）- 3- aminopropyls-trimethoxy silane is uniformly mixed and ultrasonic disperse processing, water-bath
After being heated to 85 DEG C while being stirred to react 4.5h, filtering is rinsed, drying, and coupling agent modified graphene oxide is obtained.It will obtain
Silane coupler modified graphene oxide and ethylene-vinyl alcohol copolymer presoma with mass ratio 1:5 feed intake, even in 3MPa
The association reaction that 90 DEG C of heat preservation 2h complete silane and ethylene-vinyl alcohol copolymer presoma is heated under conditions of speed stirring,
It cuts and is granulated after hot extrusion before product cooling, obtain the composite particles of graphene oxide and ethylene-vinyl alcohol.Pass through Ultramicro-powder
Particle is refined into dry powder by broken machine, and sieving sub-elects particle of the grain size at 20-30 μm；Dry powder after taking 1kg to be sieved, it is poly- with 4kg
Urethane resin mixes, and obtains graphene heat molten type anticorrosive paint.
To the graphene heat molten type anticorrosive paint that embodiment 3 obtains, surveyed according to coating standard JIS K5664-2002
Examination, obtains that the results are shown in Table 1, it is seen then that utilizes ethylene-vinyl alcohol copolymer dispersed graphite alkene, the graphene anti-corrosion of acquisition
Coating, impact resistance, acid resistance, alkali resistance and resistance to salt water have reached standard requirement, meanwhile, than traditional graphite olefine resin
Coating has superior corrosion resistance.
Embodiment 4
A kind of the step of preparation method of graphene hot melt anticorrosive paint, preparation, is as follows：
It takes Vinyl Acetate Monomer 1kg to be uniformly mixed with 1kg methanol, 1kg ethyl alcohol, the 1kg tert-butyl alcohols, 10g azos two is added
Isobutyronitrile is uniformly mixed, is added in reaction kettle as initiator, be passed through nitrogen and simultaneously with the speed of 100rpm stir into
Row raw material deoxygenation, after continuing 12min, deoxygenation terminates, and being passed through vinyl monomer makes reactor pressure stablize in 45bar, and heating carries out
Polymerisation, temperature rise to 72 DEG C of heat preservation 4h, are during which continually fed into vinyl monomer and maintain pressure, cool down after reaction, obtain
Crude product obtains ethylene-vinyl alcohol copolymer presoma after removing residual monomer.Weigh the 3- of 150g graphene oxides, 10g
Aminopropyl trimethoxysilane, is uniformly mixed and ultrasonic disperse is handled, after heating water bath is stirred to react 5h simultaneously to 75 DEG C, mistake
Filter is rinsed, drying, and coupling agent modified graphene oxide is obtained.The silane coupler modified graphene oxide and second that will be obtained
Alkene-ethenol copolymer presoma is with mass ratio 1:7 feed intake, and in 2MPa, 80 DEG C of heat preservation 2h are heated under conditions of at the uniform velocity stirring
The association reaction for completing silane and ethylene-vinyl alcohol copolymer presoma cuts after hot extrusion before product cools down and is granulated, obtains
The composite particles of graphene oxide and ethylene-vinyl alcohol copolymer.Particle is refined into dry powder, mistake by micronizer
Sieve, sub-elects particle of the grain size at 10-30 μm；Dry powder after taking 1kg to be sieved, mixes with 3.2kg alkyd resins, obtains graphene
Heat molten type anticorrosive paint.
To the graphene heat molten type anticorrosive paint that embodiment 4 obtains, surveyed according to coating standard JIS K5664-2002
Examination, obtains that the results are shown in Table 1, it is seen then that utilizes ethylene-vinyl alcohol copolymer dispersed graphite alkene, the graphene anti-corrosion of acquisition
Coating, impact resistance, acid resistance, alkali resistance and resistance to salt water have reached standard requirement, meanwhile, than traditional graphite olefine resin
Coating has superior corrosion resistance.
Embodiment 5
A kind of the step of preparation method of graphene hot melt anticorrosive paint, preparation, is as follows：
It takes Vinyl Acetate Monomer 1kg to be uniformly mixed with 1.8kg ethyl alcohol, 2g azodiisobutyronitriles is added as initiator,
It is uniformly mixed, is added in reaction kettle, be passed through nitrogen and raw material deoxygenation is carried out with the stirring of the speed of 120rpm simultaneously, continue
After 15min, deoxygenation terminates, and being passed through vinyl monomer makes reactor pressure stablize in 30bar, and heating carries out polymerisation, temperature liter
To 75 DEG C of heat preservation 6h, during which it is continually fed into vinyl monomer and maintains pressure, cool down after reaction, obtain crude product, it is residual through removing
Ethylene-vinyl alcohol copolymer presoma is obtained after remaining monomer.Weigh the N- of 120g graphene oxides, 28g（2- aminoethyls）- 3- ammonia
Propyl-triethoxysilane is uniformly mixed and ultrasonic disperse processing, after heating water bath is stirred to react 4h simultaneously to 80 DEG C, filtering,
It rinses, drying, obtains coupling agent modified graphene oxide.By obtained silane coupler modified graphene oxide and ethylene-
Ethenol copolymer presoma is by weight 1:8 feed intake, and 90 DEG C of heat preservation 2h are heated in 3MPa, under conditions of at the uniform velocity stirring and are completed
The association reaction of silane and ethylene-vinyl alcohol copolymer presoma cuts after hot extrusion before product cools down and is granulated, aoxidized
The composite particles of graphene and ethylene-vinyl alcohol copolymer.Particle is refined into dry powder by micronizer, is sieved, point
Select particle of the grain size at 15-25 μm；Dry powder after taking 1kg to be sieved, mixes with 2.2kg alkyd resins, obtains graphene hot melt
Type anticorrosive paint.
To the graphene heat molten type anticorrosive paint that embodiment 5 obtains, surveyed according to coating standard JIS K5664-2002
Examination, obtains that the results are shown in Table 1, it is seen then that utilizes ethylene-vinyl alcohol copolymer dispersed graphite alkene, the graphene anti-corrosion of acquisition
Coating, impact resistance, acid resistance, alkali resistance and resistance to salt water have reached standard requirement, meanwhile, than traditional graphite olefine resin
Coating has superior corrosion resistance.
Comparative example 1
Weigh the N- of 120g graphene oxides, 28g（2- aminoethyls）- 3- aminopropyls-triethoxysilane is uniformly mixed simultaneously
Ultrasonic disperse processing, after heating water bath is stirred to react 4h simultaneously to 80 DEG C, filtering is rinsed, drying, and coupling agent modified oxygen is obtained
Graphite alkene.By obtained silane coupler modified graphene oxide and commercially available ethylene-vinyl alcohol copolymer by weight 1:8 throw
Material, the combination that 90 DEG C of heat preservation 2h completion silane and ethylene-vinyl alcohol copolymer are heated in 3MPa, under conditions of at the uniform velocity stirring are anti-
It answers, cuts and be granulated after hot extrusion before product cools down, obtain the compound of graphene oxide and ethylene-vinyl alcohol copolymer
Grain.Particle is refined into dry powder by micronizer, is sieved, sub-elects particle of the grain size at 15-25 μm；After taking 1kg to be sieved
Dry powder, mixed with 2.2kg alkyd resins, obtain graphene heat molten type anticorrosive paint.
The graphene coating that comparative example 1 obtains is tested also according to coating standard JIS K5664-2002, is obtained
Arrive that the results are shown in Table 1.
Table 1：
Claims (10)
1. a kind of preparation method of graphene hot melt anticorrosive paint, it is characterised in that ethylene-vinyl alcohol copolymer presoma is prepared,
And be granulated through reactive extrursion after being mixed with coupling agent modified graphene oxide, particulate abrasive to dry powder-shaped is finally added to tree
Graphene heat molten type anticorrosive paint obtained in fat；Specific preparation process is as follows：
（1）After Vinyl Acetate Monomer and solvent are mixed, initiator is added, is uniformly mixed, is added in reaction kettle, is passed through lazy
Property gas and raw material deoxygenation is carried out with certain speed stirring simultaneously, vinyl monomer is passed through after deoxygenation and heats polymerization, is obtained
To ethylene-vinyl alcohol copolymer presoma；The solvent is made of methanol, ethyl alcohol, the tert-butyl alcohol with arbitrary proportion；Described
Vinyl Acetate Monomer, solvent mass ratio be 1:1.5~3；The initiator is azodiisobutyronitrile or the peroxidating new last of the ten Heavenly stems
Any one in sour spy's pentyl ester, additive amount is the 0.2 ~ 1% of Vinyl Acetate Monomer and solvent gross mass；
（2）It is 10 by graphene oxide and silane coupling agent example in mass ratio:After 1 ~ 3 is uniformly mixed simultaneously ultrasonic disperse processing, water
Bath is heated and is stirred to react and rinses, dries up after a certain period of time, and it is for use to obtain coupling agent modified graphene oxide；
（3）By step（2）Obtained silane coupler modified graphene oxide and step（1）Ethylene-vinyl alcohol copolymer before
It is 1 that body, which is driven, by charged material weight ratio:5 ~ 8, in high pressure, is heated under conditions of at the uniform velocity stirring and complete silane and ethylene vinyl alcohol copolymer
The association reaction of object presoma cuts after extrusion and is granulated, obtains the compound of graphene oxide and ethylene-vinyl alcohol copolymer
Grain；
（4）By step（3）Obtained particle is refined into dry powder in micronizer, and sieving sub-elects the particle of suitable particle diameter,
Particle is mixed with resin in proportion, obtains graphene heat molten type anticorrosive paint.
2. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（2）Institute
The silane coupling agent stated is 3- aminopropyl trimethoxysilanes, 3- aminopropyl triethoxysilanes, N-（2- aminoethyls）- 3- ammonia
Propyl-trimethoxysilane, N-（2- aminoethyls）It is one or more in -3- aminopropyls-triethoxysilane.
3. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（1）Institute
The deoxygenation mixing speed stated is 100 ~ 120rpm, continues 10 ~ 15min.
4. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（1）Institute
The intake for the vinyl monomer stated is to make the pressure of reaction kettle in 30 ~ 50bar.
5. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（1）Institute
The heating polymerization temperature being passed through after vinyl monomer stated is 65 ~ 75 DEG C.
6. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（1）Institute
The heating polymerization time stated is 4 ~ 6 hours.
7. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（3）Institute
The high pressure stated is 2-3MPa, and heating temperature is 75 ~ 85 DEG C, and the association reaction time is 4 ~ 5 hours.
8. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（4）Institute
The particle diameter sub-elected after the crushing stated is at 10 ~ 30 microns.
9. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（4）Institute
The resin stated is at least one of epoxy resin, polyurethane resin, alkyd resin.
10. a kind of preparation method of graphene hot melt anticorrosive paint according to claim 1, it is characterised in that：Step（4）Institute
The ratio of the particle and resin stated is mass ratio 1:2~5.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810654297.1A CN108948954A (en) | 2017-10-17 | 2017-10-17 | A kind of anticorrosive paint that dispersibility is more stable |
| CN201810654298.6A CN108707355B (en) | 2017-10-17 | 2017-10-17 | Anticorrosive paint |
| CN201710963356.9A CN107641422B (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of efficient graphene hot melt anticorrosive paint |
| CN201810654296.7A CN108929615A (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of anticorrosive paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710963356.9A CN107641422B (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of efficient graphene hot melt anticorrosive paint |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810654298.6A Division CN108707355B (en) | 2017-10-17 | 2017-10-17 | Anticorrosive paint |
| CN201810654296.7A Division CN108929615A (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of anticorrosive paint |
| CN201810654297.1A Division CN108948954A (en) | 2017-10-17 | 2017-10-17 | A kind of anticorrosive paint that dispersibility is more stable |
Publications (2)
| Publication Number | Publication Date |
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| CN107641422A CN107641422A (en) | 2018-01-30 |
| CN107641422B true CN107641422B (en) | 2018-08-07 |
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| CN201810654296.7A Withdrawn CN108929615A (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of anticorrosive paint |
| CN201710963356.9A Expired - Fee Related CN107641422B (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of efficient graphene hot melt anticorrosive paint |
| CN201810654297.1A Withdrawn CN108948954A (en) | 2017-10-17 | 2017-10-17 | A kind of anticorrosive paint that dispersibility is more stable |
| CN201810654298.6A Active CN108707355B (en) | 2017-10-17 | 2017-10-17 | Anticorrosive paint |
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| CN201810654296.7A Withdrawn CN108929615A (en) | 2017-10-17 | 2017-10-17 | A kind of preparation method of anticorrosive paint |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810654297.1A Withdrawn CN108948954A (en) | 2017-10-17 | 2017-10-17 | A kind of anticorrosive paint that dispersibility is more stable |
| CN201810654298.6A Active CN108707355B (en) | 2017-10-17 | 2017-10-17 | Anticorrosive paint |
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| CN110527405A (en) * | 2019-09-27 | 2019-12-03 | 安徽省聚科石墨烯科技股份公司 | A kind of Graphene glass fiber and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1861715A (en) * | 2006-06-13 | 2006-11-15 | 马锡华 | Environment protection type colour thermosol |
| JP5670203B2 (en) * | 2008-02-05 | 2015-02-18 | ザ、トラスティーズ オブ プリンストン ユニバーシティ | Coatings containing functionalized graphene sheets and articles coated with those coatings |
| CN101358097A (en) * | 2008-09-19 | 2009-02-04 | 河北科技大学 | Nano composite powder coatings and dispersion polymerization preparation method thereof |
| US9518188B2 (en) * | 2010-11-15 | 2016-12-13 | John S. Lettow | Method of printing a conductive article and articles made thereby |
| CN105085835B (en) * | 2014-05-14 | 2018-01-16 | 泰山玻璃纤维有限公司 | A kind of graphene modified polyvinyl acetate class film forming agent preparation method |
| JP2016176053A (en) * | 2015-03-18 | 2016-10-06 | 関西ペイント株式会社 | Powder coating composition and method for forming coated film |
| CN105504125B (en) * | 2016-01-26 | 2017-10-17 | 厦门凯纳石墨烯技术股份有限公司 | A kind of method that in-situ polymerization prepares EVA/ graphene composite materials |
| CN105505212A (en) * | 2016-01-28 | 2016-04-20 | 赵栋 | Cold zinc-sprayed anticorrosion coating doped with modified graphene |
| CN105838183B (en) * | 2016-04-01 | 2019-01-29 | 常州华科聚合物股份有限公司 | Aqueous corrosion-resistant finishes material of modified graphene and its preparation method and application |
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2017
- 2017-10-17 CN CN201810654296.7A patent/CN108929615A/en not_active Withdrawn
- 2017-10-17 CN CN201710963356.9A patent/CN107641422B/en not_active Expired - Fee Related
- 2017-10-17 CN CN201810654297.1A patent/CN108948954A/en not_active Withdrawn
- 2017-10-17 CN CN201810654298.6A patent/CN108707355B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108929615A (en) | 2018-12-04 |
| CN108948954A (en) | 2018-12-07 |
| CN108707355B (en) | 2020-09-01 |
| CN108707355A (en) | 2018-10-26 |
| CN107641422A (en) | 2018-01-30 |
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Effective date of registration: 20180628 Address after: 211400 No. 6 South Road, New Town Industrial Zone, Yizheng, Yangzhou, Jiangsu Applicant after: Jiangsu Suyang Packaging Co., Ltd. Address before: 610091 Donghai Road, Jiao long industrial port, Qingyang District, Chengdu, Sichuan 4 Applicant before: Chengdu Xinkeli Chemical Sci-Tech Co., Ltd. |
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