CN108017979A - A kind of graphene-based single-component epoxy anticorrosive paint of high temperature resistant and its preparation method and application - Google Patents
A kind of graphene-based single-component epoxy anticorrosive paint of high temperature resistant and its preparation method and application 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
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/504—Amines containing an atom other than nitrogen belonging to the amine group, carbon and hydrogen
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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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- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/04—Epoxynovolacs
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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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
- 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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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
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- C08L2203/18—Applications used for pipes
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention relates to a kind of graphene-based single-component epoxy anticorrosive paint of high temperature resistant, it includes 100 parts by weight of epoxy resin, 10 20 parts by weight of amino silicones, 10 30 parts by weight of toughener, 0.1 3 parts by weight of graphene film less than 1 micron, 20 50 parts by weight of reactive diluent, 0.1 3 parts by weight of silane coupling agent, 0.1 2 parts by weight of dispersant, 02 parts by weight of pigment, 12 18 parts by weight of boron trifluoride amine complex, 5 12 parts by weight of dicyandiamide；A kind of high temperature resistant, toughness, wear-resisting anti-corrosive paint of epoxy resin are finally obtained, while additionally provides its preparation method and application.
Description
Technical field
The present invention relates to epoxy coating field, and in particular to a kind of graphene-based single-component epoxy anticorrosive paint neck of high temperature resistant
Domain, is more particularly to a kind of preparation method and application of coating.
Background technology
With the discovery of society, the application of various pipes increases year by year, from industrial pipeline to underground piping, in urban development
Underground has spread all over various pipes, and the performance of pipeline influences the every aspect of our lives.Metallic conduit is actually using
In reduced, but the corrosion in many fields or essential metallic conduit is a problem to be solved, and is metal
The maximum limiting factor that pipeline uses.
The anti-corrosion protection of metallic conduit is researcher years of work point, and the cladding of anticorrosion adhesive tape is usually used, arrives
The gap of adhesive tape still has the situation generation to metal erosion with infiltration for many years；It is another kind of be using anticorrosive paint its
The anticorrosive paint of middle epoxy systems is most widely used.In metallic conduit, most commonly used is conventional use in high-temperature conduit
High molecular material and polymer composite degree of aging it is many soon compared with metallic conduit, but the painting of high-temperature metal pipe surface
How the problem of aging of layer is important, improve the heat-resisting quantity of coating, reduce the degree of high temperature ageing, while also to keep it
The adhesive force on basis.
In view of the above-mentioned problems, having carried out being directed to Journal of Sex Research, technical scheme has been obtained.
The content of the invention
Goal of the invention：In order to solve the problems, such as to refer in background technology and performance in urgent need to be improved, the present invention is by reasonable
Resin complex and curing agent coordinate, obtain a kind of anticorrosive paint for having high temperature resistant, wear-resistant strength, toughness and durability concurrently, lead to
Above-mentioned performance can be balanced by crossing addition small particle graphene, meanwhile, this law invention introduces reactive fire resistant resin and reactivity
Resistant, toughened dose balances heat-resisting quantity and coating toughness, and passes through stage curing raising resistance to elevated temperatures.Summary is several
Aspect, the present invention finally obtain a kind of high temperature resistant, toughness, wear-resisting anti-corrosive paint of epoxy resin.
In order to reach above-mentioned technique effect, present invention employs following technical solution.
Summary of the invention
Corrosion-resistant epoxy paint
A kind of graphene-based single-component epoxy anticorrosive paint of 1. high temperature resistant of technical solution, it is characterised in that：Including asphalt mixtures modified by epoxy resin
100 parts by weight of fat, amino silicones 10-20 parts by weight, toughener 10-30 parts by weight, the graphene film 0.1- less than 1 micron
3 parts by weight, reactive diluent 20-50 parts by weight, silane coupling agent 0.1-3 parts by weight, dispersant 0.1-2 parts by weight, pigment 0-2
Parts by weight, boron trifluoride-amine complex 12-18 parts by weight, dicyandiamide 5-12 parts by weight.
The graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the optimal technical scheme 2. according to technical solution 1, institute
Mixture of the epoxy resin by bisphenol A epoxide resin E51, epoxy resin E20 and novolac epoxy resin is stated, three's mass ratio is
100：15-25：30-35 parts by weight.
The graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the optimal technical scheme 3. according to technical solution 1, institute
It is epoxy terminated response type liquid nitrile rubber to state toughener.
The graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the optimal technical scheme 4. according to technical solution 1, institute
State the acrylic glycidol ether, phenyl glycidyl ether, the double contractings of the ethylene glycol of bicyclic epoxide that reactive diluent is monocyclic epoxide
Mixture more than one or both of water glycerin ether, resorcinol bisglycidyl ether etc., is preferably the second of bicyclic epoxide
Glycol bisglycidyl ether and resorcinol bisglycidyl ether mass ratio 1-1.5：1 mixture.
The graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the optimal technical scheme 5. according to technical solution 1, institute
It is the polymethylphenylsiloxane oligomer containing Amino End Group to state polysiloxanes, and amine value is 40-70mg KOH/g.
The graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the optimal technical scheme 6. according to technical solution 1, institute
The graphene film preferred size less than 1 micron is stated between 100-600 nanometers.
The graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the optimal technical scheme 7. according to technical solution 1, should
Coating can add the mixture of quick curing agent and ethanol during Rapid-Repair, and the quick curing agent is curing agent
The weight ratio of T31, quick curing agent and ethanol is 1:1-2.
The preparation method of coating
The preparation of any graphene-based single-component epoxy anticorrosive paints of high temperature resistant of 8. technical solution 1-7 of technical solution
Method, comprises the following steps：The reactive diluent stirring of epoxy resin, amino silicones, toughener and 1/2 mass is equal
It is even, add and be pre-mixed uniform graphene film less than the 1 micron, reactive diluent of 1/2 mass, silane coupling agent, scattered
Agent and pigment, stir evenly；Boron trifluoride-amine complex and dicyandiamide are further added, is uniformly mixed.
The application of coating and application method
Graphene-based single-component epoxy anticorrosive paint described in 9. technical solution 1-7 of technical solution is in high-temperature pipe anti-corrosion
Application.
Graphene-based single-component epoxy anticorrosive paint described in 10. technical solution 9 of technical solution is in high-temperature pipe anti-corrosion
Application, the temperature of the high temperature is 50-100 DEG C
Detailed description of the invention
In order to make technical staff be more fully understood from technical scheme, it will divide introduction each skill below
Art point, carries out relevant mechanistic explanation.
The basic composition selection of coating
The composition of the graphene-based single-component epoxy anticorrosive paint of high temperature resistant of the invention is：Including 100 weight of epoxy resin
Part, amino silicones 10-20 parts by weight, toughener 10-30 parts by weight, the graphene film 0.1-3 parts by weight less than 1 micron,
Reactive diluent 20-50 parts by weight, silane coupling agent 0.1-3 parts by weight, dispersant 0.1-2 parts by weight, pigment 0-2 parts by weight,
Boron trifluoride-amine complex 12-18 parts by weight, dicyandiamide 5-12 parts by weight.Using the combination of epoxy resin and toughener, obtain
With intensity and flexible coating, it further uses the graphene film of small size, and the addition of graphene provides enhancing and divides
Stress is dissipated, the selection of toughener is critically important, while increase pliability avoids dusting, can also keep the attachment of coating
Power.Meanwhile present invention employs amino silicones, it is reacted with epoxy resin at high temperature, and what is obtained contains polysiloxane
Improve high-temperature behavior.
The selection of epoxy resin ingredient
Resin uses blending epoxy in the present invention, its epoxy resin is preferably rigid epoxy resin and flexible epoxy
Resin, is preferably the mixture of bisphenol A epoxide resin E51, epoxy resin E20 and novolac epoxy resin, and three's mass ratio is
100：15-25：30-35 parts by weight.The epoxide number that the epoxide number of bisphenol A epoxide resin E51 is 0.51, E20 is 0.20, different rings
After the bisphenol A epoxide resin mixing of oxygen value, the different network of crosslinking degree is formed, the E20 of the small degree of cross linking plays the effect of toughness reinforcing,
For the epoxide number of novolac epoxy resin between 0.51-0.54, the film being fully cured possesses good anti-corrosive properties, chemicals-resistant
Property, heat resistance and wearability, chemical resistance of coating is improved very much.
The selection of amino silicones
Amino silicones component is added to raising resistance to elevated temperatures, the amino and asphalt mixtures modified by epoxy resin of amino silicones
The epoxide group of fat reacts at high temperature, forms the structure of copolymerization.As optimal technical scheme, polysiloxanes is the ammonia containing end
The polymethylphenylsiloxane oligomer of base, the phenyl in the polysiloxanes further improve resistance to elevated temperatures, as into
One step it is preferred, amine value 40-70mgKOH/g, amine value should not be too large, and the crosslinking degree of excessive formation is excessive, easily makes coating
Adhesive force reduces, if amine value is too small, cross-linking effect is bad, and amino silicones are difficult to be formed homogeneous, surface with epoxy resin
Out-of-flatness.
The selection of toughener
The toughener is epoxy terminated response type liquid nitrile rubber, is the toughener for belonging to a kind of reactable, meeting
Crosslinking is entered, favourable to coated film overall stability, can be the epoxy terminated response type liquid of CHX100 as common selection
Nitrile rubber.
The selection of reactive diluent
The reactive diluent is the acrylic glycidol ether, phenyl glycidyl ether, bicyclic epoxide of monocyclic epoxide
Mixture more than one or both of ethylene glycol bisglycidyl ether, resorcinol bisglycidyl ether etc..Use activity
Diluent can be with scattered each component, while does not have pollutant, volatile components.It finally can enter to apply using reactive diluent
In layer, the not solvent contamination of generation environment.As optimal technical scheme, reactive diluent is preferably that the ethylene glycol of bicyclic epoxide is double
Glycidol ether and resorcinol bisglycidyl ether mass ratio 1-1.5：1 mixture, wherein the ethylene glycol of bicyclic epoxide is double
Glycidol ether will not have an impact the adhesive force of coating, it may also reduce the easy dusting of film obtains problem after curing.
The selection of graphene film structure
For the graphene film preferred size for being less than 1 micron between 100-600 nanometers, graphite flake has lamellar structure can
To play stress peptizaiton, but size should not be too large, and if excessive, easily form the sheet using graphite flake as core and polymerize
Thing, can influence adhesive force, have dusting tendency increase film problem, meanwhile, paint coating thickness is generally little, lamella it is oversized
Thicknesses of layers reduce in the case of using rough, influence graphene using effect.Graphene in higher price at this stage,
If graphene can not be efficiently used, the invalid increase of cost can be completed.
The selection of curing agent
Two kinds of curing agent are employed in the present invention, respectively boron trifluoride-amine complex and dicyandiamide, both curing agent
The curing agent of latency is belonged to, it is sufficiently stable in the case of normal temperature storage, it will not be cured.Boron trifluoride-amine complex
Condition of cure be usually 120 DEG C, the condition of cure of dicyandiamide is at 150-170 DEG C, this belongs to stage curing mechanism, is applying
Expect to need to be handled using 120 DEG C or so during primary solidification, cure stablize relatively at this temperature, because boron trifluoride-amine
The addition of complex compound is larger；Raised in the event of the exception of temperature, reaching more than 150 DEG C, dicyandiamide rapidly rises
To solidification, strengthen the crosslinking degree of film layer, resistance to elevated temperatures can also further improve.
On the basis of said components, quick curing agent and ethanol can be further sprayed after coating is not trickled,
Realize preliminary curing, film layer is stablized, and then film layer processing is realized solid eventually using high temperature.The present invention is fast in order to accelerate to cure
Rate, improves surface drying speed, easy to use.The quick curing agent is curing agent T31, and the weight ratio of quick curing agent and ethanol is
1:1-2.Ethanol content is also unsuitable excessive, and the excessive feature of environmental protection that can cause coating reduces, if ethanol content is too low, cures speed
Rate is slower, loses the meaning of component setting.
Other factors select
For the preparation method and application of coating, there is no specified otherwise content, referring specifically to overview section.
For the application method of graphene-based single-component epoxy anticorrosive paint, it is that coating is coated on pipe surface, treats not
After trickling, quick curing agent and ethanol are sprayed in coating, after ethanol volatilization, 120 DEG C is warmed to and is cured.
Beneficial technique effect
The present invention is coordinated by rational resin complex and curing agent, is obtained one kind and is had high temperature resistant, wear-resistant strength, toughness concurrently
With the anticorrosive paint of durability, above-mentioned performance can be balanced by adding small particle graphene, meanwhile, this law invention introduces reaction
Property fire resistant resin and resistant, toughened dose of reactivity balance heat-resisting quantity and coating toughness, and by it is stage curing improve it is resistance to
High-temperature behavior.Summary several respects, the present invention finally obtain a kind of high temperature resistant, toughness, wear-resisting anti-corrosive paint of epoxy resin.
Embodiment
In order to make technical staff's more intuitive understanding technical scheme, select below several exemplary embodiments into
Row is introduced, these embodiments do not form limiting the scope of the invention, and any scheme without departing substantially from inventive concept is all at this
In invention protection domain.
Embodiment 1
The preparation method of coating 1 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolac trees
The polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g) of fat, 15g containing Amino End Group, 20g toughening agent Cs HX100,
The ethylene glycol bisglycidyl ether and 10g resorcinol bisglycidyl ethers of the bicyclic epoxides of 10g stir evenly, and addition is pre-mixed
The ethylene glycol bisglycidyl ether of the bicyclic epoxide of graphene film, 10g of uniform 0.5g 500nm and the double shrinks of 10g resorcinols
Glycerin ether, 1g silane coupling agents, 0.5g dispersants, stir evenly；And then by 15 parts by weight of boron trifluoride-amine complex, double cyanogen
8 parts by weight of amine are uniformly mixed, to obtain the final product.
Embodiment 2
The preparation method of coating 2 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolac trees
The polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g) of fat, 15g containing Amino End Group, 20g toughening agent Cs HX100,
20g resorcinol bisglycidyl ethers stir evenly, and it is double to add the graphene film for being pre-mixed uniform 0.5g 500nm, 10g
The ethylene glycol bisglycidyl ether and 10g resorcinols bisglycidyl ether, 1g silane coupling agents, 0.5g dispersants of epoxy group,
Stir evenly；And then be uniformly mixed 15 parts by weight of boron trifluoride-amine complex, 8 parts by weight of dicyandiamide, to obtain the final product.
Embodiment 3
The preparation method of coating 3 is the rapid curing of coating surface coating paint quality 20% when in use in embodiment 1
Agent solution, the composition of rapid curing agent solution is quick curing agent T31 and the weight ratio of ethanol is 1:1.
Comparative example 1
The preparation method of coating 4 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolac trees
Fat, 15g polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g), 20g toughener conventional liqs containing Amino End Group
The ethylene glycol bisglycidyl ether and 10g resorcinol bisglycidyl ethers of the bicyclic epoxide of nitrile rubber, 10g stir evenly, and add
Enter the ethylene glycol bisglycidyl ether and 10g isophthalic of the bicyclic epoxide of the graphene film for being pre-mixed uniform 0.5g 500nm, 10g
Diphenol bisglycidyl ether, 1g silane coupling agents, 0.5g dispersants, stir evenly；And then by 15 weight of boron trifluoride-amine complex
Measure part, 8 parts by weight of dicyandiamide are uniformly mixed, to obtain the final product.
Comparative example 2
The preparation method of coating 5 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolac trees
The polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g) of fat, 15g containing Amino End Group, 20g toughening agent Cs HX100,
The ethylene glycol bisglycidyl ether and 10g resorcinol bisglycidyl ethers of the bicyclic epoxides of 10g stir evenly, and addition is pre-mixed
The uniform graphene film of 2 μm of 0.5g, the ethylene glycol bisglycidyl ether of the bicyclic epoxides of 10g and the double shrinks of 10g resorcinols are sweet
Oily ether, 1g silane coupling agents, 0.5g dispersants, stir evenly；And then by 15 parts by weight of boron trifluoride-amine complex, dicyandiamide 8
Parts by weight are uniformly mixed, to obtain the final product.
Comparative example 3
The preparation method of coating 6 is：By polymethyl-benzene base silica of 100g bisphenol A epoxide resins E51, the 15g containing Amino End Group
Alkane oligomer (amine value is 40-50mg KOH/g), the ethylene glycol bisglycidyl ether of the bicyclic epoxide of 20g toughening agent Cs HX100,10g
Stirred evenly with 10g resorcinol bisglycidyl ethers, add graphene film, the 10g for being pre-mixed uniform 0.5g 500nm
The ethylene glycol bisglycidyl ether and 10g resorcinols bisglycidyl ether, 1g silane coupling agents, 0.5g of bicyclic epoxide disperse
Agent, stirs evenly；And then be uniformly mixed 15 parts by weight of boron trifluoride-amine complex, 8 parts by weight of dicyandiamide, to obtain the final product.
Comparative example 4
The preparation method of coating 7 is：By 65g bisphenol A epoxide resin E51,35g novolac epoxy resin, 15g containing Amino End Group
Polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g), the second two of the bicyclic epoxide of 20g toughening agent Cs HX100,10g
Alcohol bisglycidyl ether and 10g resorcinol bisglycidyl ethers stir evenly, and addition is pre-mixed uniform 0.5g 500nm
Graphene film, the bicyclic epoxides of 10g ethylene glycol bisglycidyl ether and 10g resorcinols bisglycidyl ether, 1g silane it is even
Join agent, 0.5g dispersants, stir evenly；It is and then 15 parts by weight of boron trifluoride-amine complex, the mixing of 8 parts by weight of dicyandiamide is equal
It is even, to obtain the final product.
Comparative example 5
The preparation method of coating 8 is：By 65g bisphenol A epoxide resin E51,35g epoxy resin E20,15g containing Amino End Group
Polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g), the second two of the bicyclic epoxide of 20g toughening agent Cs HX100,10g
Alcohol bisglycidyl ether and 10g resorcinol bisglycidyl ethers stir evenly, and addition is pre-mixed uniform 0.5g 500nm
Graphene film, the bicyclic epoxides of 10g ethylene glycol bisglycidyl ether and 10g resorcinols bisglycidyl ether, 1g silane it is even
Join agent, 0.5g dispersants, stir evenly；It is and then 15 parts by weight of boron trifluoride-amine complex, the mixing of 8 parts by weight of dicyandiamide is equal
It is even, to obtain the final product.
Comparative example 6
The preparation method of coating 9 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolac trees
Fat, 15g polymethylphenylsiloxane oligomer (no amino), the double contractings of the ethylene glycol of the bicyclic epoxide of 20g toughening agent Cs HX100,10g
Water glycerin ether and 10g resorcinol bisglycidyl ethers stir evenly, and add the graphite for being pre-mixed uniform 0.5g 500nm
The ethylene glycol bisglycidyl ether and 10g resorcinols bisglycidyl ether of the bicyclic epoxide of alkene piece, 10g, 1g silane coupling agents,
0.5g dispersants, stir evenly；And then be uniformly mixed 15 parts by weight of boron trifluoride-amine complex, 8 parts by weight of dicyandiamide, i.e.,
.
Comparative example 7
The preparation method of coating 10 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolacs
Resin, the ethylene glycol bisglycidyl ether of the bicyclic epoxide of 20g toughening agent Cs HX100,10g and 10g resorcinol bisglycidyl ethers
Stir evenly, add the ethylene glycol bisglycidyl for the bicyclic epoxide of graphene film, 10g for being pre-mixed uniform 0.5g 500nm
Ether and 10g resorcinols bisglycidyl ether, 1g silane coupling agents, 0.5g dispersants, stir evenly；And then by boron trifluoride-
15 parts by weight of amine complex, 8 parts by weight of dicyandiamide are uniformly mixed, to obtain the final product.
Comparative example 8
The preparation method of coating 11 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolacs
Resin, 15g polymethylphenylsiloxane oligomer (amine value is 40-50mg KOH/g), 20g toughener containing Amino End Group
The ethylene glycol bisglycidyl ether and 10g resorcinol bisglycidyl ethers of the bicyclic epoxide of CHX100,10g stir evenly, and add
It is pre-mixed the ethylene glycol bisglycidyl ether and 10g isophthalic two of the bicyclic epoxide of graphene film, 10g of uniform 0.5g 500nm
Phenol bisglycidyl ether, 1g silane coupling agents, 0.5g dispersants, stir evenly；And then by 15 weight of boron trifluoride-amine complex
Part is uniformly mixed, to obtain the final product.
Comparative example 9
The preparation method of coating 12 is：By 65g bisphenol A epoxide resin E51,13g epoxy resin E20 and 22g epoxy novolacs
Resin, 15g polymethylphenylsiloxane oligomer (amine value is about 120mg KOH/g), 20g toughener containing Amino End Group
The ethylene glycol bisglycidyl ether and 10g resorcinol bisglycidyl ethers of the bicyclic epoxide of CHX100,10g stir evenly, and add
It is pre-mixed the ethylene glycol bisglycidyl ether and 10g isophthalic two of the bicyclic epoxide of graphene film, 10g of uniform 0.5g 500nm
Phenol bisglycidyl ether, 1g silane coupling agents, 0.5g dispersants, stir evenly；And then by 15 weight of boron trifluoride-amine complex
Part, 8 parts by weight of dicyandiamide are uniformly mixed, to obtain the final product.
General application method
Above-described embodiment is consistent, (removing embodiment 3) specific as follows with the application method of contrast：Coating is coated on pipe
Road surface, in 120 DEG C or so curings after not trickling.
Performance test methods：
1. wearability test
Wearability test is tested using ISO7784-2-1997, test condition 1000g, rotating speed 500r.
2. pliability is tested
Pliability test is characterized using bend test, using the I type crooked test instrument of the 4.1.2 in GB/T6742-2007
(test bottom plate use 0.5mm steel plates, 20 μm of coating layer thickness), a diameter of 2mm, 3mm of axis, 4mm, 5mm, 6mm, 8mm, 10mm,
12mm, 16mm, 20mm, 25mm and 32mm, error allow for ± 0.1mm.
3. adhesive force is tested
Tested using GB/T9286-1998, wherein 0-5 grades, 0 grade preferably, and 5 grades worst.
4. patience is tested
There is blistering, cockle time in second method in the water-fast 1733-1993-T paint film water resistance determination methods using GB, record
(h)；Acidic fog resistance is tested, and the time (h) of surface corrosion (obvious discoloration and loss of gloss, be subject to and first occur) occurs in record.
5. resistance to elevated temperatures
The coating of 20 microns thick of embodiment and comparative example is coated in steel plate, steel plate is heated, and is separately recorded in test
At a temperature of occur peeling off, time for substantially changing colour, test temperature is respectively 120 DEG C and 160 DEG C, chronomere (h).
Test result：
There are the above results it can be found that without using the diluent containing flexible structure, obtained film adhesion, pliability
All significantly decrease；Phenolic resin is very big on wearability and corrosion-resistant influence in composite epoxy resin；Select large stretch of stone
Black alkene can reduce adhesive force；And the polysiloxanes containing amino is very big on resistance to elevated temperatures influence, when not containing amino, system is divided
Scattered property is bad, and adhesive force has declined, and amino content is excessive, and hinge degree is excessive, has harmful effect to flexible and adhesive force,
But heat-resisting ability not lifted, be because adhesive force decline cause it is easily peelable；Dicyandiamide in curing agent is to 160 DEG C of resistance to height
Warm nature influences greatly, to be added without 160 DEG C of resistances to elevated temperatures and declined.The selection of above-mentioned each component has an impact final performance,
Obtain that a kind of product of excellent performance is very difficult, and the prior art does not have the report of related content.
Claims (10)
- A kind of 1. graphene-based single-component epoxy anticorrosive paint of high temperature resistant, it is characterised in that：Including 100 parts by weight of epoxy resin, Amino silicones 10-20 parts by weight, toughener 10-30 parts by weight, the graphene film 0.1-3 parts by weight less than 1 micron, activity Diluent 20-50 parts by weight, silane coupling agent 0.1-3 parts by weight, dispersant 0.1-2 parts by weight, pigment 0-2 parts by weight, trifluoro Change boron-amine complex 12-18 parts by weight, dicyandiamide 5-12 parts by weight.
- 2. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 1, it is characterised in that：The epoxy For resin by the mixture of bisphenol A epoxide resin E51, epoxy resin E20 and novolac epoxy resin, three's mass ratio is 100：15- 25：30-35.
- 3. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 1, it is characterised in that：The toughness reinforcing Agent is epoxy terminated response type liquid nitrile rubber.
- 4. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 1, it is characterised in that：The activity Diluent is acrylic glycidol ether, phenyl glycidyl ether, the ethylene glycol bisglycidyl of bicyclic epoxide of monocyclic epoxide Mixture more than one or both of ether, resorcinol bisglycidyl ether etc., is preferably the ethylene glycol pair of bicyclic epoxide Glycidol ether and resorcinol bisglycidyl ether mass ratio 1-1.5：1 mixture.
- 5. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 1, it is characterised in that：The poly- silicon Oxygen alkane is the polymethylphenylsiloxane oligomer containing Amino End Group, and amine value is 40-70 mgKOH/g.
- 6. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 1, it is characterised in that：It is described to be less than 1 micron of graphene film preferred size is between 100-600 nanometers.
- 7. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 1, it is characterised in that：The coating exists During Rapid-Repair, the mixture of quick curing agent and ethanol can be added, the quick curing agent is curing agent T31, soon The weight ratio of fast curing agent and ethanol is 1:1-2.
- 8. the preparation method of any graphene-based single-component epoxy anticorrosive paints of high temperature resistant of claim 1-6, its feature It is：Comprise the following steps：The reactive diluent stirring of epoxy resin, amino silicones, toughener and 1/2 mass is equal It is even, add and be pre-mixed uniform graphene film less than the 1 micron, reactive diluent of 1/2 mass, silane coupling agent, scattered Agent and pigment, stir evenly；Boron trifluoride-amine complex and dicyandiamide are further added, is uniformly mixed.
- 9. the answering in high-temperature pipe anti-corrosion of the graphene-based single-component epoxy anticorrosive paint of high temperature resistant described in claim 1-7 With.
- 10. the graphene-based single-component epoxy anticorrosive paint of high temperature resistant according to claim 9 is in high-temperature pipe anti-corrosion Using the temperature of the high temperature is 50-180 DEG C.
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| CN109666372A (en) * | 2018-11-19 | 2019-04-23 | 中国石油天然气集团有限公司 | A kind of water injection well resistance to 120 celsius temperature graphene modified epoxy coating and preparation method thereof |
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