CN115595043B - High-low Wen Biandan-resistant graphene zinc powder coating material, and preparation method and application thereof - Google Patents
High-low Wen Biandan-resistant graphene zinc powder coating material, and preparation method and application thereof 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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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
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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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
- C09D5/24—Electrically-conducting 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
Abstract
The application discloses a high-low Wen Biandan-resistant graphene zinc powder coating material, a preparation method and application thereof. The raw materials of the coating material comprise epoxy polysiloxane resin, bisphenol A type epoxy resin, zinc powder, graphene slurry, filler, auxiliary agent, solvent, compound amino compound, phenolic amine resin, accelerator, solvent and the like. The coating material can be applied to the surface of a steel substrate, has strong binding force with the steel substrate, has extremely high toughness and cold and heat exchange resistance, can keep excellent corrosion resistance under severe corrosion environment, and particularly has excellent salt spray corrosion resistance, and the single-side corrosion width is less than or equal to 2mm after 10000 hours of single-coating salt spray resistance.
Description
Technical Field
The application relates to a coating material, in particular to a high-low Wen Biandan-resistant graphene zinc powder coating material and a preparation method and application thereof, and belongs to the technical field of material science.
Background
Epoxy zinc-rich coatings have long been widely used in heavy duty coating applications to extend the useful life of steel substrates in severe atmospheric corrosive environments. The existing epoxy zinc-rich paint is generally low in resin content in the formula design because the existing epoxy zinc-rich paint needs to rely on dense physical lap joints of spherical zinc powder to form an electron transmission channel. When the coating is used in a corrosion environment with a large temperature difference, the adhesion of the formed coating is gradually reduced due to the continuous alternating action of cold and hot stress, the flexibility of a paint film is poor, and finally the coating is cracked or even peeled off, so that the corrosion resistance is invalid.
Disclosure of Invention
The main purpose of the application is to provide a high-low Wen Biandan graphene zinc powder coating material, a preparation method and application thereof, wherein the high-low temperature graphene zinc powder coating material has strong binding force with a steel base material, extremely high toughness and cold-heat exchange resistance, and can maintain excellent corrosion resistance in a severe corrosion environment, so that the defects in the prior art are overcome.
In order to achieve the above object, the present application adopts the technical scheme that:
the invention provides a high-low-resistant Wen Biandan graphene zinc powder coating material, which comprises a first component and a second component as raw materials;
wherein the first component comprises the following components in parts by weight:
the second component comprises the following components in parts by weight:
55-65 parts of compound amino compound
30-35 parts of phenolic amine resin
4-15 parts of solvent.
In one embodiment, the compound amine compound is a product mainly prepared by performing prepolymerization addition reaction on gamma-glycidoxypropyl trimethoxysilane and triethylene tetramine (TETA) according to the molar ratio of 2.1-2.2:1.0, wherein the weight average molecular weight is 620-670, and the active hydrogen equivalent weight is 155-167.
In one embodiment, the epoxy polysiloxane resin has an epoxy equivalent weight of 440-470 and the siloxane side chains are methoxy and/or ethoxy groups.
In one embodiment, the bisphenol A type epoxy resin has an epoxy equivalent weight of 210-240 and a weight average molecular weight of 420-480.
In one embodiment, the first component comprises bisphenol A epoxy resin and epoxy polysiloxane resin in a molar ratio of 2.0-2.3:1.0.
In one embodiment, the second component comprises a compound amine compound and a phenolic amine resin in a mass ratio of 2.0-2.6:1.0.
In one embodiment, the phenolic amine resin has an active hydrogen equivalent weight of 90 to 100.
In one embodiment, the mass ratio of the first component to the second component is 16-18:1.
In one embodiment, the zinc powder is a 500-800 mesh zinc powder.
In one embodiment, the coating material comprises 40-50wt% zinc powder.
In one embodiment, the graphene slurry contains 30-40wt% of graphene, wherein the graphene contained in the graphene slurry has a lamellar diameter of 5-20 microns and a number of layers less than or equal to 10 layers.
In one embodiment, the filler includes any one or a combination of more of composite ferrotitanium powder, mica powder, talcum powder and silicon micro powder, and is not limited thereto.
In one embodiment, the adjuvant includes any one or more of a defoamer, a leveling agent, and a rheology aid, and is not limited thereto.
In one embodiment, the solvent includes any one or more of xylene, PM, MIBK, acetone, and n-butanol, and is not limited thereto.
In another aspect, the invention also provides a method for preparing the high and low Wen Biandan-resistant graphene zinc powder coating material, which comprises the following steps:
uniformly mixing epoxy polysiloxane resin, bisphenol A epoxy resin, zinc powder, graphene slurry, filler, auxiliary agent and solvent to form a mixture, and obtaining a first component;
mixing gamma-glycidoxypropyl trimethoxy silane, triethylene tetramine and a solvent, reacting for 1-1.5 hours at 55-65 ℃, cooling to room temperature to obtain a compound amino compound, and uniformly mixing and stirring the compound amino compound, phenolic amine resin and the solvent to obtain a second component;
and uniformly mixing the first component and the second component to obtain a raw material of the high-low Wen Biandan-resistant graphene zinc powder coating material, and preparing the high-low Wen Biandan-resistant graphene zinc powder coating material by using the raw material.
In one embodiment, the preparation method specifically includes: uniformly mixing epoxy polysiloxane resin, bisphenol A epoxy resin, zinc powder, graphene slurry, filler, auxiliary agent and solvent, dispersing at a high speed of 2000-3000r/min for 25-30min, and adjusting the viscosity of the obtained mixture to 120-130KU by using the solvent to obtain the first component.
In one embodiment, the preparation method specifically includes: adding TETA and solvent into a container with a temperature control device, then slowly adding gamma-glycidol ether oxypropyl trimethoxy silane under the condition of continuous stirring, controlling the reaction temperature to be 55-65 ℃ for reaction for 1-1.5h, and then cooling to room temperature to obtain the compound amino.
In one embodiment, the raw materials can be applied to the surface of the substrate by various methods common in the art, such as spin coating, knife coating, spray coating, printing, and the like, and then dried or cured by natural drying, heating, electromagnetic radiation, and the like, to produce the high and low Wen Biandan graphene zinc powder-resistant coating material.
Yet another aspect of the invention also provides the use of the high and low Wen Biandan inked zinc powder coating material, for example in forming a steel substrate surface protective structure.
One embodiment of the present invention provides a protective coating formed from the high and low Wen Biandan inked zinc powder coating material.
One embodiment of the invention provides a steel substrate surface protection structure, which comprises the protection coating, wherein the protection coating is coated on the surface of the steel substrate. Further, the protective coating is directly bonded to the surface of the steel substrate.
The high-low Wen Biandan ink-resistant zinc powder coating material is designed by adopting the components, and has at least the following characteristics:
(1) The gamma-glycidol ether oxypropyl trimethoxy silane and TETA react to form a compound amino compound, and a siloxane structure is introduced into an epoxy group crosslinking network, so that an organic-inorganic hybrid interpenetrating network is formed between the gamma-glycidol ether oxypropyl trimethoxy silane and the TETA. Specifically, TETA structurally contains 2 primary amines and 2 secondary amines, and because of the small molecular weight and the excessive reactivity of the primary amines, the defects of poor miscibility, high volatility, white paint film, irregular crosslinked network and the like in the mixing and curing process of TETA and epoxy generally exist. According to the invention, gamma-glycidol ether oxypropyl trimethoxy silane is introduced into TETA, so that on one hand, primary amine is consumed, the volatility of the gamma-glycidol ether oxypropyl trimethoxy silane is reduced, the reaction between the gamma-glycidol ether oxypropyl trimethoxy silane and epoxy is more gentle, and on the other hand, a siloxane side chain is introduced into a coating structure. When the coating is exposed to moisture, the siloxane side chains of the two components, which bear alkoxy groups, hydrolyze to form silicon hydroxyl groups, which subsequently condense further and interpenetrate the host epoxy structure to form an organic-inorganic hybrid network. The hybrid network can improve the cohesive force of the coating material, so that the coating material has higher tensile strength and toughness, and meanwhile, as the siloxane structure and the steel base material can form a hydration hydrogen bond, the adhesive force between the coating material and the steel can be further improved, so that the capability of the coating material for resisting cold and hot alternation under a severe corrosion environment is greatly improved.
(2) The utilization efficiency of zinc powder is improved by adding graphene. The graphene has good conductivity and large diameter-thickness ratio, and when the graphene is well dispersed in the coating, a denser electron path can be formed through lap joint with zinc powder. Compared with the prior zinc powder primer, in the cathodic protection process, the generated zinc salt can be deposited at the bottom of the coating to block the electron transmission channel between the zinc powder and the steel substrate. And the graphene does not generate oxidized salt, so that an electron channel between the graphene and the steel substrate is not blocked, and the influence caused by zinc salt deposition can be reduced.
(3) Through the synergistic effect of the components in the coating material, particularly the synergistic effect of the composite amino compound, the components such as graphene, zinc powder and the like, the affinity between the film forming material and the inorganic powder is greatly enhanced by utilizing the siloxane structure. The graphene surface has hydroxyl groups and can form hydrogen bonds with siloxane. The graphene can form anchor points in the organic-inorganic hybrid network, so that the stability of the hybrid network structure is improved, the cohesive force of the coating is further improved, and the toughness of the coating is enhanced. Meanwhile, the dispersibility of graphene, zinc powder and the like in a coating system is improved by the siloxane structure, so that the graphene can be effectively overlapped in the coating system without forming agglomeration, and the utilization rate of the zinc powder is greatly improved. The zinc powder addition amount in the coating film is between 40 and 50 weight percent, so that the salt spray corrosion resistance effect of the coating material can be obviously improved, and if the zinc powder addition amount is too low, the overlapping of the zinc powder and the graphene is not facilitated, and if the zinc powder addition amount is higher than 50 weight percent, the cost is higher, and the cohesive force of the coating film can be negatively influenced.
Compared with the prior art, the technical scheme of the application has at least the following advantages: the provided high-low Wen Biandan graphene zinc powder coating material has strong binding force with steel base materials, extremely high toughness and cold-heat exchange resistance, has adhesive force with the steel base materials of not less than 15Mpa after 20 cold-heat cycles at-40-60 ℃, also has excellent corrosion resistance in a severe corrosion environment, and has single-side corrosion width of not more than 2mm after 10000 hours of single-coating salt fog resistance.
Detailed Description
The present application will be more fully understood from a reading of the following detailed description. However, it is to be understood that the specific embodiments disclosed below are merely exemplary of the application, which may be embodied in various forms. Therefore, specific functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed embodiment.
In the following examples, unless otherwise specified, the respective materials, production equipment, test equipment, etc. involved are commercially available, and the corresponding production and test methods, etc. are also known in the art. And, in the following examples, low-speed stirring means rotation speed of 500r/min or less, high-speed stirring means rotation speed of 2000r/min or more, and 500-2000r/min is medium-speed stirring.
Example 1: the preparation method of the high-low Wen Biandan-resistant graphene zinc powder coating material comprises the following steps of:
(1) Adding 40g of dimethylbenzene and 80g of epoxy resin E-44 into a container, starting low-speed stirring, adding 80g of epoxy polysiloxane resin Silikoftal ED under the stirring condition, stirring for about 10min to uniformly mix, then adding 238g of filler, 28g of rheological additive and 2g of defoamer, stirring for about 20min at high speed, then sequentially adding 450g of zinc powder and 28g of graphene slurry, dispersing at medium speed for about 25min, and finally using a mixed solvent with the mass ratio of 55g of dimethylbenzene to n-butanol of 7:3 to adjust the viscosity to about 120KU to obtain a first component.
(2) 78.1g of dimethylbenzene and 140g of TETA are added into a container with a temperature control device, a stirrer is started to stir at a low speed, 474.6g of gamma-glycidol ether oxypropyl trimethoxy silane is slowly added under the stirring condition, the stirring is continued, the temperature is controlled to be about 65 ℃ for reaction for about 1 hour, and the compound amino compound is prepared after cooling to room temperature.
(3) Under the condition of low-speed stirring, 692.7g of the compound amino compound and 307.3g of phenolic amine resin NC-558 are mixed and stirred for about 10min to be uniform, so as to obtain a second component.
(4) Uniformly mixing the first component and the second component according to the mass ratio of 16:1 to obtain a high-low Wen Biandan graphene zinc powder resistant coating, namely the raw material of the coating material; the coating material is then formed using the coating material.
Example 2: the preparation method of the high-low Wen Biandan-resistant graphene zinc powder coating material comprises the following steps of:
(1) Adding 40g of dimethylbenzene and 81.2g of epoxy resin E-44 into a container, starting low-speed stirring, adding 70g of epoxy polysiloxane resin Silikoftal ED under the stirring condition, stirring for 5-10min until the mixture is uniform, then adding 238g of filler, 28g of rheological additive and 2g of defoamer, stirring at high speed for 20-25min, then sequentially adding 450g of zinc powder and 28g of graphene slurry, dispersing at medium speed for about 20min, and finally adjusting the viscosity to about 130KU by using a mixed solvent with the mass ratio of 63.8g of dimethylbenzene to n-butanol being 7:3 to obtain a first component.
(2) Adding 42.4g of dimethylbenzene and 140g of TETA into a container with a temperature control device, starting a stirrer to stir at a low speed, then slowly adding 498.4g of gamma-glycidol ether oxypropyl trimethoxy silane under stirring, continuously stirring, controlling the temperature to be about 55 ℃ for reaction for about 1.5 hours, and cooling to room temperature to obtain the compound amino compound.
(3) Under the condition of low-speed stirring, 680.8g of the compound amino compound and 319.2g of phenolic amine resin NC-558 are mixed and stirred for about 5min to be uniform, so as to obtain a second component.
(4) Uniformly mixing the first component and the second component according to the mass ratio of 16:1 to obtain a high-low Wen Biandan graphene zinc powder resistant coating, namely the raw material of the coating material; the coating material is then formed using the coating material.
Example 3: the preparation method of the high-low Wen Biandan-resistant graphene zinc powder coating material comprises the following steps of:
(1) Adding 40g of dimethylbenzene and 80g of epoxy resin E-44 into a container, starting low-speed stirring, adding 80g of epoxy polysiloxane resin Silikoftal ED under the stirring condition, stirring for about 5min to uniformly mix, then adding 238g of filler, 28g of rheological additive and 2g of defoamer, stirring for about 20min at high speed, then sequentially adding 450g of zinc powder and 28g of graphene slurry, dispersing at medium speed for about 25min, and finally using a mixed solvent with the mass ratio of 55g of dimethylbenzene to n-butanol of 7:3 to adjust the viscosity to about 125KU to obtain a first component.
(2) 149g of dimethylbenzene and 140g of TETA are added into a container with a temperature control device, a stirrer is started to stir at a low speed, 474.6g of gamma-glycidoxypropyl trimethoxysilane is slowly added under the stirring condition, the stirring is continued, the temperature is controlled to be about 60 ℃ for reaction for 1.5 hours, and the compound amino compound is prepared after cooling to room temperature.
(3) 763.6g of compound amino compound and 236.4g of phenolic amine resin NC-558 are mixed and stirred for about 10min to be uniform under the condition of low-speed stirring, and a second component is obtained.
(4) Uniformly mixing the first component and the second component according to the mass ratio of 16:1 to obtain a high-low Wen Biandan graphene zinc powder resistant coating, namely the raw material of the coating material; the coating material is then formed using the coating material.
Example 4: the preparation method of the high-low Wen Biandan-resistant graphene zinc powder coating material is basically the same as that of the example 1, and the difference is that: uniformly mixing the first component and the second component according to the mass ratio of 18:1 to obtain a high-low Wen Biandan graphene zinc powder resistant coating, namely the raw material of the coating material; the coating material is then formed using the coating material.
Comparative example 1: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: 80g of the epoxy polysiloxane resin in step (1) was replaced with bisphenol A type epoxy resin E-44 in equal amounts.
Comparative example 2: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: the molar ratio of TETA to gamma-glycidoxypropyl trimethoxysilane in step (2) is increased to 2.5:1.
Comparative example 3: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: 692.7g of the complex amine compound in step (3) was replaced with the phenolic amine resin NC-558 in equal amount.
Comparative example 4: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: in the step (4), the mass ratio of the first component to the second component is 20:1.
Comparative example 5: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: steps (2) - (3) were omitted and the complex amine compound was replaced with 140g teta.
Comparative example 6: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: step (2) was omitted and the complex amine-based compound was replaced with a physical mixture of 140g teta and 474.6g gamma-glycidoxypropyl trimethoxysilane.
Comparative example 7: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: the gamma-glycidoxypropyl trimethoxysilane in step (2) is replaced by the same molar amount of 40# tetraethyl orthosilicate.
Comparative example 8: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: the molar ratio of gamma-glycidoxypropyl trimethoxysilane to TETA in step (2) is 2.4:1.
Comparative example 9: the preparation method of the anticorrosive coating material is basically the same as that of example 1, except that: the molar ratio of gamma-glycidoxypropyl trimethoxysilane to TETA in step (2) is 1.9:1.
The coatings of examples 1-4 and comparative examples 1-9 were applied to the surface of steel substrates, respectively, and cured at room temperature to form coating materials having a thickness of about 100 μm, and the properties of these coating materials were further tested, and the corresponding test results are shown in table 1. Each test result in table 1 is an average value of the test results of the multiple batches of products.
TABLE 1 results of Performance test of coating materials of examples 1-4 and comparative examples 1-9
It can be seen that after the high-low Wen Biandan graphene zinc powder coating materials prepared in the examples 1-4 are coated, after single coating is subjected to salt fog resistance for 10000 hours, the single-side corrosion width is less than or equal to 2mm, and the adhesive force of the single-side corrosion width is not less than 15MPa still maintained under the cold-hot alternating condition of-40-60 ℃ multiplied by 20 cycles, and the protective capability on steel substrates is far better than that of the comparative examples 1-9 and the existing epoxy zinc-rich primer.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (12)
1. A high-low Wen Biandan graphene zinc powder coating material, which is characterized in that the raw materials of the coating material comprise a first component and a second component;
the first component comprises the following components in parts by weight:
7-10 parts of epoxy polysiloxane resin
7-10 parts of bisphenol A type epoxy resin
40-50 parts of zinc powder
2-4 parts of graphene slurry
20-30 parts of filler
3-4 parts of auxiliary agent
5-8 parts of a solvent;
the second component comprises the following components in parts by weight:
55-65 parts of compound amino compound
30-35 parts of phenolic amine resin
4-15 parts of a solvent;
wherein the epoxy polysiloxane resin has an epoxy equivalent of 440-470, and the siloxane side chain comprises methoxy and/or ethoxy;
the epoxy equivalent of the bisphenol A type epoxy resin is 210-240, and the weight average molecular weight is 420-480;
the active hydrogen equivalent of the phenolic amine resin is 90-100;
the compound amino compound is formed by performing prepolymerization addition reaction on gamma-glycidol ether oxypropyl trimethoxy silane and triethylene tetramine according to the molar ratio of 2.1-2.2:1.0, wherein the weight average molecular weight is 620-670, and the active hydrogen equivalent is 155-167;
and the mass ratio of the first component to the second component is 16-18:1, and the coating material comprises 40-50wt% zinc powder.
2. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the first component comprises bisphenol A type epoxy resin and epoxy polysiloxane resin with a molar ratio of 2.0-2.3:1.0.
3. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the second component comprises a compound amino compound and phenolic amine resin with the mass ratio of 2.0-2.6:1.
4. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the zinc powder is 500-800 meshes zinc powder.
5. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the graphene slurry comprises 30-40wt% of graphene, wherein the diameter of a lamellar layer of the graphene is 5-20 microns, and the number of layers is less than or equal to 10.
6. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the filler comprises any one or a combination of a plurality of composite ferrotitanium powder, mica powder, talcum powder and silicon micro powder.
7. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the auxiliary agent comprises any one or a combination of a plurality of defoamer, leveling agent and rheological auxiliary agent.
8. The high and low Wen Biandan ink vinyl zinc powder resistant coating material according to claim 1, which is characterized in that: the solvent includes any one or more of xylene, PM, MIBK, acetone, and n-butanol.
9. A process for preparing a high and low Wen Biandan inked zinc powder resistant coating material as defined in any one of claims 1 to 8, comprising:
uniformly mixing epoxy polysiloxane resin, bisphenol A epoxy resin, zinc powder, graphene slurry, filler, auxiliary agent and solvent to form a mixture, and obtaining a first component;
mixing gamma-glycidoxypropyl trimethoxy silane, triethylene tetramine and a solvent, reacting for 1-1.5 hours at 55-65 ℃, cooling to room temperature to obtain a compound amino compound, and uniformly mixing and stirring the compound amino compound, phenolic amine resin and the solvent to obtain a second component;
and uniformly mixing the first component and the second component to obtain a raw material of the high-low Wen Biandan-resistant graphene zinc powder coating material, and preparing the high-low Wen Biandan-resistant graphene zinc powder coating material by using the raw material.
10. The preparation method of the high-low Wen Biandan-resistant graphene zinc powder coating material according to claim 9 is characterized by comprising the following steps: uniformly mixing epoxy polysiloxane resin, bisphenol A epoxy resin, zinc powder, graphene slurry, filler, auxiliary agent and solvent, dispersing at a high speed of 2000-3000r/min for 25-30min, and adjusting the viscosity of the obtained mixture to 120-130KU by using the solvent to obtain the first component.
11. A protective coating, characterized by: the protective coating is formed from the high and low Wen Biandan inked zinc powder resistant coating material of any one of claims 1-8.
12. A steel substrate surface protective structure comprising the protective coating of claim 11 applied to a steel substrate surface.
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| CN108250411B (en) * | 2017-12-19 | 2021-03-30 | 吉力水性新材料科技（珠海）有限公司 | Organosilicon modified epoxy resin aqueous curing agent and preparation method thereof |
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