CN108047896A - A kind of dual-component coating and its preparation method and application - Google Patents
A kind of dual-component coating and its preparation method and application Download PDFInfo
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- CN108047896A CN108047896A CN201711475889.9A CN201711475889A CN108047896A CN 108047896 A CN108047896 A CN 108047896A CN 201711475889 A CN201711475889 A CN 201711475889A CN 108047896 A CN108047896 A CN 108047896A
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- graphene oxide
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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
- C09D163/10—Epoxy resins modified by unsaturated compounds
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The present invention provides a kind of dual-component coating and its preparation method and application, the dual-component coating is made of component A and B component, wherein, the component A includes following component by mass percentage：45~65wt% of vinyl ester resin；20~40wt% of glass flake；1~10wt% of graphene oxide of silane coupling agent modification；Additive is to 100wt%.Dual-component coating provided by the invention is not easy to come off from substrate surface, plays the effect of protection base material well to the strong adhesive force of base material；And with good resistance to acid and alkali and salt fog resistance, good anti-corrosion effect is reached.
Description
Technical field
The invention belongs to paint fields, are related to a kind of dual-component coating and its preparation method and application.
Background technology
The structures built with concrete and reinforced concrete are often subject to the erosion of corrosive medium during use, if
Structures do not take structural material or do not implement anti-corrosion measure when building, then corrosive medium may damage building structure,
It is even made to lose use value.Especially in industrial structure, construction structure may directly with mordant liquid,
The media contacts such as gaseous state are corroded by the waste material discharged in industrial products or industrial production, thus will cause structures
The corrosion of structural material.If in addition, the additive improper use of concrete, construction quality there are problem or construction raw material exist
Quality problems etc., these reasons can cause armored concrete corrosion phenomenon occur.
Corrosion of metal is the phenomenon that metal is destroyed by electrochemistry or the chemical action of surrounding medium.Metal erosion
Throughout the every field of national economy, massive losses are brought to national economy.In the country of industry prosperity, metal erosion is made
Into economic loss account for the 1-4% of total value of production in national economy, every year since the steel of rust corrosion accounts for the 20% of total output,
Equipment there are about 30% during metal erosion because scrapping.And in China, every year since economic loss caused by metal erosion accounts for its people
The 4% of total output value.Just because of this, there is excellent metal anti-corrosive paint to be rapidly developed, is obtained in all trades and professions wide
General use.
CN1073702A proposes a kind of preparation method of Glass-scale Anti-corrosion Paint, it is by epoxy resin, glass squama
Piece, solvent, titanate coupling agent, modified amine curing agent composition；CN1861717A proposes the second of wet process of FGD equipment anticorrosion
Alkenyl esters plexiglas scale painting coating；These coating can prevent coating with corroding at substrate interface, but due to second
The problems such as compatibility of alkenyl esters resin and glass flake, it may appear that anticorrosive coating and base material delamination influence coating to base material
Protective value.It needs to develop a kind of new coating to solve the above problems at present.
The content of the invention
It is an object of the invention to provide a kind of dual-component coatings and its preparation method and application.
For this purpose, the present invention uses following technical scheme：
On the one hand, the present invention provides a kind of dual-component coating, the dual-component coating is made of component A and B component,
In, the component A includes following component by mass percentage：
Dual-component coating provided by the invention includes the oxygen of vinyl ester resin, glass flake and silane coupling agent modification
Graphite alkene, the graphene oxide of silane coupling agent modification can make what vinyl ester resin combined with glass flake more to step up
It is close, increase the compatibility of glass flake and vinyl ester resin, coating is avoided to make coating due to phase separation etc. in application
It comes off.And the graphene oxide of silane coupling agent modification is added in coating can increase adhesive force of the coating to base material, make
Its is not easily to fall off, and on the other hand, graphene oxide has good resistance to acid and alkali and impermeable effect, and silane is added in coating
The graphene oxide of coupling agent modification can increase the resistance to acid and alkali and anti-permeability of coating.
In the present invention, the mass percentage of the vinyl ester resin be 45~65wt%, such as 45wt%,
50wt%, 55wt%, 60wt%, 65wt% etc..
In the present invention, the mass percentage of the glass flake be 20~40wt%, such as 20wt%, 25wt%,
30wt%, 35wt%, 40wt% etc..
In the present invention, the mass percentage of the graphene oxide of silane coupling agent modification is 1~10wt%, example
Such as 1wt%, 3wt%, 5wt%, 7wt%, 10wt%.
Preferably, the preparation method of the graphene oxide of the silane coupling agent modification is as follows：
(1) graphene oxide is scattered in solvent, obtains dispersion liquid；
(2) silane coupling agent is added in the dispersion liquid that step (1) obtains, is dispersed with stirring, then carries out temperature reaction, obtain
The graphene oxide dispersion modified to silane coupling agent；
Preferably, the specific surface area >=50m of step (1) described graphene oxide2/ g (such as 50m2/g、55m2/g、70m2/
g、100m2/g、120m2/g、200m2/g、300m2/ g etc.), further preferably >=100m2/g。
Preferably, step (1) described solvent is dimethylbenzene and n-butanol in mass ratio 5:2 obtained mixed solvents.
Preferably, in step (1) described dispersion liquid, the concentration of graphene oxide is 20-30wt%, such as 20wt%,
22wt%, 25wt%, 27wt%, 30wt% etc..
Prepare silane coupling agent modification graphene oxide method in, step (2) described silane coupling agent be with
The silane coupling agent of unsaturated double-bond.
In the present invention, the hydroxyl that the carboxyl that the graphene oxide of silane coupling agent modification carries is carried with glass flake surface
Base reacts, and with vinyl ester resin polymerisation, the oxygen of silane coupling agent modification occur for the unsaturated double-bond of silane coupling agent
Graphite alkene serves as the compatilizer between glass flake and vinyl ester resin, combines glass flake and vinyl ester resin
It is even closer, and then the cohesive force that coating provided by the invention can be enhanced and the adhesive force to base material.
Preferably, the silane coupling agent with unsaturated double-bond is KH570.
Preferably, the mass ratio of the graphene oxide and KH570 are 3:1.
Preferably, step (2) time being dispersed with stirring is 15-30min, for example, 15min, 20min, 22min,
25min, 27min, 30min etc..
Preferably, step (2) mixing speed being dispersed with stirring is 1000-2000r/min, such as 1000r/min,
1200r/min, 1500r/min, 1700r/min, 2000r/min etc..
Preferably, the temperature of step (2) described temperature reaction be 50-55 DEG C, such as 50 DEG C, 51 DEG C, 52 DEG C, 53 DEG C, 54
DEG C, 55 DEG C etc..
Preferably, the time of step (2) described temperature reaction be 45-90min, such as 45min, 50min, 55min,
60min, 65min, 70min, 75min, 80min, 90min etc..
Preferably, step (3) is carried out after step (2)：By the graphene oxide dispersion of silane coupling agent modification except molten
It is even to obtain the silane to reaction product solid content >=90% (such as 90%, 92%, 94%, 96%, 98%, 100% etc.) for agent
Join the graphene oxide of agent modification.
In the present invention, the vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin.
In the present invention, the additive in component A includes following component：
In the present invention, the mass percentage of the styrene be 5~20wt%, such as 5wt%, 7wt%,
10wt%, 15wt%, 20wt% etc..
In the present invention, the mass percentage of the filler be 5~20wt%, such as 5wt%, 7wt%, 10wt%,
15wt%, 20wt% etc..
Preferably, the grain size of the filler is 1-100 μm (such as 1 μm, 5 μm, 10 μm, 50 μm, 75 μm, 100 μm etc.), into
Preferred 10-50 μm of one step.
Preferably, the filler is any one in bentonite, titanium dioxide, talcum powder or feldspar powder or at least two
Combination；Further preferred titanium dioxide:The mass ratio of talcum powder is 1:2 composition.
In the present invention, the mass percentage of the dispersant be 1~5wt%, such as 1wt%, 2wt%, 3wt%,
4wt%, 5wt% etc..
Preferably, the dispersant is organosilicon and/or the block copolymer of hydroxyl；Further preferred organosilicon.
In the present invention, the mass percentage of the anti-settling agent be 1~3wt%, such as 1wt%, 1.5wt%,
2wt%, 2.5wt%, 3wt% etc..
Preferably, the anti-settling agent is for any one in aerosil, polyamide wax or polyethylene wax or at least
Two kinds of combination；Further preferred polyamide wax.
In the present invention, the B component includes following component by mass percentage：
80~92wt% of dimethylbenzene；
5~10wt% of initiator；
1~10wt% of accelerating agent.
In the present invention, the mass percentage of the dimethylbenzene be 80~92wt%, such as 80wt%, 82wt%,
85wt%, 87wt%, 90wt%, 92wt% etc..
In the present invention, the mass percentage of the initiator be 5~10wt%, such as 1wt%, 1.5wt%,
2wt%, 2.5wt%, 3wt% etc..
Preferably, the initiator is isopropyl benzene hydroperoxide.
In the present invention, the mass percentage of the accelerating agent be 1~10wt%, such as 1wt%, 2wt%, 5wt%,
7wt%, 10wt% etc..
Preferably, the accelerating agent be cobalt iso-octoate and/or n,N-Dimethylaniline, further preferred cobalt iso-octoate.
In the present invention, in cobalt iso-octoate accelerating agent used, the mass fraction of cobalt can be 2%, 4%, 6%, 8%,
10%th, 12% etc., preferably cobalt mass fraction is 6% cobalt iso-octoate accelerating agent.
As optimal technical scheme, the dual-component coating is made of component A and B component.
Wherein, the component A includes following component by mass percentage：
The B component includes following component by mass percentage：
85~90wt% of dimethylbenzene；
6~10wt% of initiator；
1~5wt% of accelerating agent.
Second aspect, the present invention provides the preparation method of dual-component coating as described above, the preparation method includes：
(1) graphene oxide and portions additive modified the vinyl ester resin of formula ratio, silane coupling agent mix
It closes, adds the additive of glass flake and remainder, be uniformly mixed, obtain component A；
(2) when in use, by component A and B component (6-12) in mass ratio:1 is uniformly mixed, and obtains the two-component and applies
Material.
In the present invention, the mass ratio (6-12):1 can be 6:1、7:1、8:1、9:1、10:1、11:1、12:1 etc..
Preparation method provided by the invention is simple and practicable, can be by silane coupled using preparation method provided by the invention
The graphene oxide of agent modification makes vinyl ester resin and glass flake combine even closer, raising glass flake and vinyl
The compatibility of ester resin, and then avoid coating that delamination occurs with base material in application.
As optimal technical scheme, the preparation method includes the following steps：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A；
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component；
(3) when in use, by component A and B component (6-12) in mass ratio:1 is uniformly mixed, and obtains the two-component and applies
Material.
The third aspect, the present invention provides the purposes of dual-component coating as described above, and the dual-component coating is used as
Anticorrosive paint.
Preferably, the dual-component coating is used as antiseptic concrete and/or anti-corrosion of metal.
Compared with the prior art, the invention has the advantages that：
On the one hand the graphene oxide for the silane coupling agent modification that dual-component coating provided by the invention includes can make second
Alkenyl esters resin is combined even closer with glass flake, and can increase the adhesive force of coating and base material, can be as far as possible
Coating is avoided to come off in use；The resistance to acid and alkali and anti-permeability that another aspect graphene oxide has can make coating
It is that base material can effectively be protected not to be corroded infringement when coating is applied as anticorrosive paint with better performance.
Dual-component coating provided by the invention is to the strong adhesive force of base material, to the adhesive force of iron-based material up to more than 15MPa,
It to the adhesive force of concrete up to more than 5MPa, therefore is not easy to come off from substrate surface, plays the effect of protection base material well；
And there is good resistance to acid and alkali and salt fog resistance, acid-fast alkali-proof is more than 1000h, and salt fog resistance is more than 1600h, is reached
Good anti-corrosion effect, and resistance of chloride ion penetration is less than 910-4a/[mg/(cm2D)], base material can effectively be extended
Service life, saved cost indirectly.Preparation method provided by the invention is simple and practicable.
Specific embodiment
The technical solution further illustrated the present invention below by specific embodiment.Those skilled in the art should be bright
, the embodiment be only to aid in understand the present invention, be not construed as to the present invention concrete restriction.
Embodiment 1
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of KH570 modifications；Filler is titanium dioxide, and grain size is 50 μm；Dispersant is organosilicon；It is anti-settling
Agent is polyamide wax.
B component includes following component by mass percentage：
Dimethylbenzene 92wt%；
Initiator 5wt%；
Accelerating agent 3wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 9:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 2
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of KH570 modifications；Filler is bentonite, and grain size is 70 μm；Dispersant is organosilicon and contains
The block copolymer of hydroxyl；Anti-settling agent is polyethylene wax.
B component includes following component by mass percentage：
Dimethylbenzene 80wt%；
Initiator 10wt%；
Accelerating agent 10wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 6:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 3
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of KH570 modifications；Filler is feldspar powder, and grain size is 1 μm；Dispersant is the block of hydroxyl
Copolymer；Anti-settling agent is aerosil.
B component includes following component by mass percentage：
Dimethylbenzene 90wt%；
Initiator 9wt%；
Accelerating agent 1wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 12:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 4
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of KH570 modifications；Filler is titanium dioxide, and grain size is 10 μm；Dispersant is organosilicon；It is anti-settling
Agent is aerosil and polyamide wax.
B component includes following component by mass percentage：
Dimethylbenzene 84wt%；
Initiator 8wt%；
Accelerating agent 8wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 8:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 5
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of KH570 modifications；Filler is titanium dioxide, and grain size is 100 μm；Dispersant is organosilicon；It is anti-
Heavy agent is polyamide wax and the composition of polyethylene wax.
B component includes following component by mass percentage：
Dimethylbenzene 88wt%；
Initiator 7wt%；
Accelerating agent 5wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 10:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 6
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of KH570 modifications；Filler is titanium dioxide, and grain size is 50 μm；Dispersant is organosilicon；It is anti-settling
Agent is polyamide wax.
B component includes following component by mass percentage：
Dimethylbenzene 92wt%；
Initiator 5wt%；
Accelerating agent 3wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 9:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 7
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and bisphenol A epoxide resin；Silane coupling agent modification
Graphene oxide is the graphene oxide of isobutyl triethoxy silane modification；Filler is titanium dioxide, and grain size is 50 μm；Dispersant
For organosilicon；Anti-settling agent is polyamide wax.
B component includes following component by mass percentage：
Dimethylbenzene 92wt%；
Initiator 5wt%；
Accelerating agent 3wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then according to
Secondary addition anti-settling agent, glass flake and filler, are uniformly mixed, obtain component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 9:1 is uniformly mixed, and obtains dual-component coating.
Embodiment 8
Dual-component coating provided in this embodiment is made of component A and B component；
Wherein, component A includes following component by mass percentage：
Wherein, vinyl ester resin is polymerize to obtain by methacrylic acid and phenol aldehyde type epoxy resin；Silane coupling agent is modified
Graphene oxide be vinyltriethoxysilane modification graphene oxide；Additive is styrene.
B component includes following component by mass percentage：
Dimethylbenzene 95wt%；
Initiator 4wt%；
Accelerating agent 1wt%.
Wherein, initiator is isopropyl benzene hydroperoxide, and accelerating agent is cobalt iso-octoate (6%).
Preparation method is as follows：
(1) graphene oxide and portions additive modified vinyl ester resin, silane coupling agent mix, and add
The additive of glass flake and remainder is uniformly mixed, obtains component A.
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component.
(3) when in use, by component A and B component in mass ratio 12:1 is uniformly mixed, and obtains dual-component coating.
Comparative example 1
With differing only in for embodiment 1, this comparative example does not add the graphene oxide of silane coupling agent modification, other groups
Part content and preparation method are constant.
Comparative example 2
With differing only in for embodiment 1, the graphene oxide of this comparative example addition is without any modification.
Comparative example 3
With differing only in for embodiment 1, the quality of the graphene oxide of the silane coupling agent modification of this comparative example addition
Percentage composition is 15wt%, and the mass percentage of vinyl ester resin is 53wt%, other component contents and preparation side
Method is constant.
The embodiment 1-8 and comparative example 1-3 dual-component coatings provided are tested for the property, the results are shown in Table 1.
Wherein, dual-component coating is observed into appearance of coat coated on base material, be divided into normal, more bubbles, peel off three kinds it is apparent
Pattern.
Test dual-component coating is divided into the adhesive force of base material the attachment to the adhesive force of base material iron and to base material concrete
Power.
The acid-fast alkali-proof test of dual-component coating is carried out using infusion method.Acid proof test environment is that concentration is
25% H2SO4, the test environment of alkali resistance is the NaOH that concentration is 25%.
Table 1
From data in table, the resistance to acid and alkali of dual-component coating provided by the invention is strong, and is not easy to take off from substrate surface
Fall, can be used as the anticorrosive paint of concrete or metal；And it was found from the comparison of embodiment 1 and comparative example 1, it is even when not adding silane
Join the graphene oxide of agent modification, the resistance to acid and alkali of dual-component coating can be influenced and can be reduced with the adhesive force of base material, easily
It comes off from substrate surface；It was found from the comparison of embodiment 1 and comparative example 2, when the graphene oxide of addition is without any modification
When, can equally have an impact to dual-component coating；It was found from the comparison of embodiment 1 and comparative example 3, when excessive silane coupled of addition
During the graphene oxide of agent modification, although the performance of coating remains to keep preferably scope, graphene oxide can be caused
Waste increases coating cost.
Applicant states, the present invention by above-described embodiment come illustrate dual-component coating and preparation method thereof of the present invention and
Using, but the invention is not limited in above-described embodiment, that is, do not mean that the present invention has to rely on above-described embodiment and could implement.
Person of ordinary skill in the field is it will be clearly understood that any improvement in the present invention, equivalent the replacing to each raw material of product of the present invention
It changes and the addition of auxiliary element, the selection of concrete mode etc., all falls within protection scope of the present invention and the open scope.
Claims (10)
1. a kind of dual-component coating, which is characterized in that the dual-component coating is made of component A and B component, wherein, the A groups
Divide includes following component by mass percentage：
2. dual-component coating according to claim 1, which is characterized in that the graphene oxide of the silane coupling agent modification
Preparation method it is as follows：
(1) graphene oxide is scattered in solvent, obtains dispersion liquid；
(2) silane coupling agent is added in the dispersion liquid that step (1) obtains, is dispersed with stirring, then carries out temperature reaction, obtain silicon
The graphene oxide dispersion of alkane coupling agent modification；
Preferably, the specific surface area >=50m of step (1) described graphene oxide2/ g, further preferably >=100m2/g；
Preferably, step (1) described solvent is dimethylbenzene and n-butanol in mass ratio 5:2 obtained mixed solvents；
Preferably, in step (1) described dispersion liquid, the concentration of graphene oxide is 20-30wt%.
3. dual-component coating according to claim 2, which is characterized in that step (2) described silane coupling agent is with not
The silane coupling agent of saturation double bond；
Preferably, the silane coupling agent with unsaturated double-bond is KH570；
Preferably, the mass ratio of the graphene oxide and KH570 are 3:1；
Preferably, step (2) time being dispersed with stirring is 15-30min；
Preferably, step (2) mixing speed being dispersed with stirring is 1000-2000r/min；
Preferably, the temperature of step (2) described temperature reaction is 50-55 DEG C；
Preferably, the time of step (2) described temperature reaction is 45-90min；
Preferably, step (3) is carried out after step (2)：By the graphene oxide dispersion of silane coupling agent modification except solvent extremely
Reaction product solid content >=90% obtains the graphene oxide of the silane coupling agent modification.
4. dual-component coating according to claim 1, which is characterized in that the vinyl ester resin by methacrylic acid and
Bisphenol A epoxide resin polymerize to obtain.
5. according to the dual-component coating described in any one of claim 1-4, which is characterized in that the additive bag in component A
Include following component：
Preferably, the grain size of the filler is 1-100 μm, further preferred 10-50 μm；
Preferably, the filler is any one in bentonite, titanium dioxide or feldspar powder or at least two combination；Further
It is preferred that titanium dioxide；
Preferably, the dispersant is organosilicon and/or the block copolymer of hydroxyl；Further preferred organosilicon；
Preferably, the anti-settling agent is any one in aerosil, polyamide wax or polyethylene wax or at least two
Combination；Further preferred polyamide wax.
6. dual-component coating according to claim 1, which is characterized in that the B component is included such as by mass percentage
Lower component：
80~92wt% of dimethylbenzene；
5~10wt% of initiator；
1~10wt% of accelerating agent；
Preferably, the initiator is isopropyl benzene hydroperoxide；
Preferably, the accelerating agent be cobalt iso-octoate and/or n,N-Dimethylaniline, further preferred cobalt iso-octoate.
7. according to the dual-component coating described in any one of claim 1-6, which is characterized in that the dual-component coating is by A
Component and B component composition；
Wherein, the component A includes following component by mass percentage：
The B component includes following component by mass percentage：
85~90wt% of dimethylbenzene；
6~10wt% of initiator；
1~5wt% of accelerating agent.
8. the preparation method of the dual-component coating according to any one of claim 1-7, which is characterized in that the preparation
Method includes：
(1) graphene oxide and portions additive modified the vinyl ester resin of formula ratio, silane coupling agent mix, then
The additive of glass flake and remainder is added in, is uniformly mixed, obtains component A；
(2) when in use, by component A and B component (6-12) in mass ratio:1 is uniformly mixed, and obtains the dual-component coating.
9. preparation method according to claim 8, which is characterized in that the preparation method includes the following steps：
(1) graphene oxide, styrene and the dispersant for modifying vinyl ester resin, silane coupling agent, then add successively
Enter anti-settling agent, glass flake and filler, be uniformly mixed, obtain component A；
(2) dimethylbenzene, initiator and accelerating agent are uniformly mixed, obtain B component；
(3) when in use, by component A and B component (6-12) in mass ratio:1 is uniformly mixed, and obtains the dual-component coating.
10. the purposes of the dual-component coating according to any one of claim 1-7, which is characterized in that by described double groups
Part coating is used as anticorrosive paint；
Preferably, the dual-component coating is used as antiseptic concrete and/or anti-corrosion of metal.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082197A (en) * | 2018-06-28 | 2018-12-25 | 江苏朝晖化工有限公司 | Self-lubricating non-solvent epoxy pipeline coating and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106497348A (en) * | 2016-10-28 | 2017-03-15 | 安徽新大陆特种涂料有限责任公司 | A kind of Graphene strengthens vinylite anticorrosive paint and preparation method thereof |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106497348A (en) * | 2016-10-28 | 2017-03-15 | 安徽新大陆特种涂料有限责任公司 | A kind of Graphene strengthens vinylite anticorrosive paint and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082197A (en) * | 2018-06-28 | 2018-12-25 | 江苏朝晖化工有限公司 | Self-lubricating non-solvent epoxy pipeline coating and preparation method thereof |
| CN109082197B (en) * | 2018-06-28 | 2020-05-12 | 江苏朝晖化工有限公司 | Self-lubricating solvent-free epoxy pipeline coating and preparation method thereof |
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