CN117025050A - Magnolol-based epoxy resin anti-corrosion coating and preparation method thereof - Google Patents
Magnolol-based epoxy resin anti-corrosion coating and preparation method thereof Download PDFInfo
- Publication number
- CN117025050A CN117025050A CN202310542330.2A CN202310542330A CN117025050A CN 117025050 A CN117025050 A CN 117025050A CN 202310542330 A CN202310542330 A CN 202310542330A CN 117025050 A CN117025050 A CN 117025050A
- Authority
- CN
- China
- Prior art keywords
- epoxy resin
- based epoxy
- magnolol
- component
- mica powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VVOAZFWZEDHOOU-UHFFFAOYSA-N magnolol Chemical compound OC1=CC=C(CC=C)C=C1C1=CC(CC=C)=CC=C1O VVOAZFWZEDHOOU-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 70
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 70
- 238000000576 coating method Methods 0.000 title claims abstract description 47
- 239000011248 coating agent Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title abstract description 17
- 238000005260 corrosion Methods 0.000 title abstract description 15
- 239000010445 mica Substances 0.000 claims abstract description 47
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 47
- 239000000843 powder Substances 0.000 claims abstract description 47
- 239000002904 solvent Substances 0.000 claims abstract description 24
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 16
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 17
- 239000003973 paint Substances 0.000 claims description 17
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 14
- 239000007822 coupling agent Substances 0.000 claims description 8
- 239000013530 defoamer Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- -1 polysiloxane Polymers 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 4
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 17
- 150000001412 amines Chemical class 0.000 description 17
- 229920000570 polyether Polymers 0.000 description 17
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229920013724 bio-based polymer Polymers 0.000 description 1
- 229920006025 bioresin Polymers 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Abstract
The invention belongs to the technical field of anti-corrosion coating, and discloses a magnolol-based epoxy resin anti-corrosion coating and a preparation method thereof. The magnolol-based epoxy resin anticorrosive coating comprises an A component and a B component. And (3) a component A: bio-based epoxy resin, B component: mica powder, a curing agent, a solvent, a silane coupling agent, a dispersing agent and a defoaming agent. The coating disclosed by the invention takes the bio-based epoxy resin as a main film forming substance, has higher environmental protection performance, and can be well adapted to the offshore high-humidity and high-salt-fog environment. The provided bio-based epoxy resin coating has simple preparation process, easy processing and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of anti-corrosion coating, and particularly relates to a novel bio-based epoxy resin anti-corrosion coating containing mica powder and a preparation method thereof.
Background
In the fields of ocean engineering, chemical industry and the like, the requirements on the corrosion resistance of the coating are particularly severe due to the severe environment, and the epoxy resin coating has been widely applied to the field of metal material corrosion resistance due to the excellent properties, such as good chemical corrosion resistance, good adhesion, excellent mechanical properties and the like. However, most of the epoxy resins are bisphenol A epoxy resins at present, the preparation process of the epoxy resins is too dependent on non-renewable energy sources and has certain harm to the environment and human bodies, so that the preparation of natural, environment-friendly and renewable high-performance bio-based epoxy resins has great significance for the research of the paint field.
Currently, more and more research is focused on developing bio-based epoxy resins that replace bisphenol a epoxy resins. Da Silva L R, carvalho B A, pereira R C, et al Bio-based one-component epoxy resin Novel high-performance anticorrosive coating from agro-industrial byproduct [ J ] Progress in Organic Coatings,2022,167:106861, a solvent-free method is adopted to synthesize cardanol-based epoxy resin e-CNSL, 1-methylimidazole is adopted as an accelerator to synthesize a high-performance anti-corrosive paint, the paint has higher crosslinking performance and good thermo-mechanical performance, high adhesive force and high impedance modulus, the initial decomposition temperature is 200 ℃, and the glass transition temperature is 30 ℃. Ammar S, iling A W M, ramesh K, et al development of fully organic coating system modified with epoxidized soybean oil with superior corrosion protection performance [ J ]. Progress in Organic Coatings,2020,140:105523. Low cost epoxidized soybean oil was introduced into the coating system to successfully prepare a multipurpose coating with multiple functions of self-cleaning, thermal insulation, corrosion protection, etc. However, the bio-based epoxy resin coating developed at present often has the problems of poor heat resistance, insufficient mechanical performance, complex preparation process and the like, and the design and preparation of the bio-based epoxy resin coating capable of meeting the requirements of high performance and functionalization is still a great challenge, and the development of the bio-based coating with excellent heat resistance and corrosion resistance can popularize the application range of the bio-based polymer material and promote the competitive advantage of the bio-based epoxy resin coating to petroleum-based resin.
Disclosure of Invention
The invention takes the bio-based epoxy resin (DGEM) with high thermal stability as film-forming resin, polyether amine D230 as curing agent, improves the coating permeability by introducing mica powder with lamellar structure, and provides the preparation method of the bio-based epoxy resin anticorrosive coating.
The technical scheme of the invention is as follows:
a preparation method of a magnolol-based epoxy resin anti-corrosion coating comprises the following steps:
(1) And (3) manufacturing a component B: mixing a curing agent, a solvent, mica powder, a silane coupling agent, a dispersing agent and a defoaming agent at normal temperature, stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer, and fully and uniformly stirring to obtain a component B;
(2) Mixing the component A and the component B, wherein the mass ratio of the magnolol-based epoxy resin in the component A to the polyetheramine D230 in the component B is 3:1. Stirring for 20 minutes and uniformly mixing to obtain the bio-based epoxy resin coating containing mica powder.
(3) Spraying the prepared bio-based epoxy resin anticorrosive paint on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured bio-based epoxy resin coating containing mica powder.
The magnolol-based epoxy resin precursor has a chemical structure in the following formula (1):
the solvent is one or more than two of toluene, xylene, n-butanol, methyl isobutyl ketone, ethyl acetate or butyl acetate; the defoaming agent is one or two of a foam breaking copolymer and a polysiloxane solution; the dispersing agent is one or more than two of copolymer solution with acid groups, low-molecular-weight unsaturated polycarboxylic acid polymer solution and polyurethane solution; the coupling agent is one or more than two of 3-aminopropyl triethoxysilane, gamma-glycidol ether oxypropyl trimethoxysilane, gamma-methacryloxypropyl trimethoxysilane and N- (beta-aminoethyl-gamma-aminopropyl) methyl dimethoxy silane.
Compared with the prior art, the invention has the beneficial effects that: the partial raw materials of the invention are from renewable bio-based compounds, and the method is simple, easy to operate, simple in curing procedure and has industrialization prospect. The pencil hardness of the bio-based epoxy resin anti-corrosion coating containing the mica powder prepared by the invention is 4H, the impact strength is 30cm, the flexibility is 0.5mm, the adhesive force is 0 level, and the electrochemical impedance is 8.47 multiplied by 10 8 Ω·cm 2 The coating does not crack and peel after 2000 hours of salt spray resistance test, and can provide high-efficiency protection for the substrate.
Detailed Description
The invention is further described below with reference to examples. It is necessary to point out that: the following examples are provided only to illustrate the present invention in more detail and are not intended to limit the scope of the invention. Modifications and adaptations can be made without departing from the spirit of the invention and are within the scope of the invention as claimed.
Example 1
The mass ratio of polyetheramine D230, silane coupling agent, defoamer and solvent in the component B is 10:1.2:1.2:80.
The total mass ratio of the component A to the component B is 30:92.4.
The epoxy equivalent ratio of the curing agent polyether amine D230 to the magnolol-based epoxy resin DGEM is 1:1.
The solvent is dimethylbenzene; the defoaming agent is polysiloxane solution; the dispersing agent is polyurethane solution; the coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
A preparation method of a magnolol-based epoxy resin anti-corrosion coating comprises the following steps:
(1) Mixing polyether amine D230, good, a silane coupling agent, a defoaming agent and a solvent according to the mass ratio of 10:1.2:1.2:80 at normal temperature, and stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer to obtain a component B.
(2) Mixing the component A and the component B according to the mass ratio of 30:92.4, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the pure magnolol-based epoxy resin anticorrosive paint without adding the filler.
(3) Spraying the prepared pure magnolol-based epoxy resin anticorrosive paint on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured pure magnolol-based epoxy resin coating.
Example 2
The mass ratio of polyetheramine D230, mica powder, silane coupling agent, defoamer, dispersant and solvent in the component B is 10:3.6:1.2:1.2:1.2:80.
The total mass ratio of the component A to the component B is 30:97.2.
The epoxy equivalent ratio of the curing agent polyether amine D230 to the magnolol-based epoxy resin DGEM is 1:1.
The solvent is dimethylbenzene; the defoaming agent is polysiloxane solution; the dispersing agent is polyurethane solution; the coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
A preparation method of a magnolol-based epoxy resin anticorrosive coating containing mica powder comprises the following steps:
(1) Mixing polyether amine D230, mica powder, a silane coupling agent, a defoaming agent, a dispersing agent and a solvent according to the mass ratio of 10:3.6:1.2:1.2:1.2:80 at normal temperature, and stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer to obtain a component B.
(2) Mixing the component A and the component B according to the mass ratio of 30:97.2, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the magnolol-based epoxy resin anticorrosive paint containing mica powder.
(3) Spraying the prepared magnolol-based epoxy resin anticorrosive paint containing mica powder on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured magnolol-based epoxy resin coating containing mica powder.
Example 3
The specific embodiment is the same as in example 2, except that: the weight ratio of the curing agent polyether amine D230 to the mica powder is 10:1.2.
The mass ratio of polyetheramine D230, mica powder, silane coupling agent, defoamer, dispersant and solvent in the component B is 10:1.2:1.2:1.2:1.2:80.
The total mass ratio of the component A to the component B is 30:94.8.
The epoxy equivalent ratio of the curing agent polyether amine D230 to the magnolol-based epoxy resin DGEM is 1:1.
The solvent is dimethylbenzene; the defoaming agent is polysiloxane solution; the dispersing agent is polyurethane solution; the coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
A preparation method of a magnolol-based epoxy resin anticorrosive coating containing mica powder comprises the following steps:
(1) Mixing polyether amine D230, mica powder, a silane coupling agent, a defoaming agent, a dispersing agent and a solvent according to the mass ratio of 10:1.2:1.2:1.2:1.2:80 at normal temperature, and stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer to obtain a component B.
(2) Mixing the component A and the component B according to the mass ratio of 30:94.8, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the magnolol-based epoxy resin anticorrosive paint containing mica powder.
(3) Spraying the prepared magnolol-based epoxy resin anticorrosive paint containing mica powder on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured magnolol-based epoxy resin coating containing mica powder.
Example 4
The specific embodiment is the same as in example 2, except that: the weight ratio of the curing agent polyether amine D230 to the mica powder is 10:2.4.
The mass ratio of polyetheramine D230, mica powder, silane coupling agent, defoamer, dispersant and solvent in the component B is 10:2.4:1.2:1.2:1.2:80.
The total mass ratio of the component A to the component B is 30:96.
The epoxy equivalent ratio of the curing agent polyether amine D230 to the magnolol-based epoxy resin DGEM is 1:1.
The solvent is dimethylbenzene; the defoaming agent is polysiloxane solution; the dispersing agent is polyurethane solution; the coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
A preparation method of a magnolol-based epoxy resin anticorrosive coating containing mica powder comprises the following steps:
(1) Mixing polyether amine D230, mica powder, a silane coupling agent, a defoaming agent, a dispersing agent and a solvent according to the mass ratio of 10:2.4:1.2:1.2:1.2:80 at normal temperature, and stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer to obtain a component B.
(2) Mixing the component A and the component B according to the mass ratio of 30:96, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the magnolol-based epoxy resin anticorrosive paint containing mica powder.
(3) Spraying the prepared magnolol-based epoxy resin anticorrosive paint containing mica powder on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured magnolol-based epoxy resin coating containing mica powder.
Example 5
The specific embodiment is the same as in example 2, except that: the weight ratio of the curing agent polyether amine D230 to the mica powder is 10:4.8.
The mass ratio of polyetheramine D230, mica powder, silane coupling agent, defoamer, dispersant and solvent in the component B is 10:4.8:1.2:1.2:1.2:80.
The total mass ratio of the component A to the component B is 30:98.4.
The epoxy equivalent ratio of the curing agent polyether amine D230 to the magnolol-based epoxy resin DGEM is 1:1.
The solvent is dimethylbenzene; the defoaming agent is polysiloxane solution; the dispersing agent is polyurethane solution; the coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
A preparation method of a magnolol-based epoxy resin anticorrosive coating containing mica powder comprises the following steps:
(1) Mixing polyether amine D230, mica powder, a silane coupling agent, a defoaming agent, a dispersing agent and a solvent according to the mass ratio of 10:4.8:1.2:1.2:1.2:80 at normal temperature, and stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer to obtain a component B.
(2) Mixing the component A and the component B according to the mass ratio of 30:98.4, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the magnolol-based epoxy resin anticorrosive paint containing mica powder.
(3) Spraying the prepared magnolol-based epoxy resin anticorrosive paint containing mica powder on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured magnolol-based epoxy resin coating containing mica powder.
Example 6
The specific embodiment is the same as in example 2, except that: the weight ratio of the curing agent polyether amine D230 to the mica powder is 10:6.
The mass ratio of polyetheramine D230, mica powder, silane coupling agent, defoamer, dispersant and solvent in the component B is 10:6:1.2:1.2:1.2:80.
The total mass ratio of the component A to the component B is 30:99.6.
The epoxy equivalent ratio of the curing agent polyether amine D230 to the magnolol-based epoxy resin DGEM is 1:1.
The solvent is dimethylbenzene; the defoaming agent is polysiloxane solution; the dispersing agent is polyurethane solution; the coupling agent is gamma-glycidyl ether oxypropyl trimethoxy silane.
A preparation method of a magnolol-based epoxy resin anticorrosive coating containing mica powder comprises the following steps:
(1) Mixing polyether amine D230, mica powder, a silane coupling agent, a defoaming agent, a dispersing agent and a solvent according to the mass ratio of 10:6:1.2:1.2:1.2:80 at normal temperature, and stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer to obtain a component B.
(2) Mixing the component A and the component B according to the mass ratio of 30:99.6, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the magnolol-based epoxy resin anticorrosive paint containing mica powder.
(3) Spraying the prepared magnolol-based epoxy resin anticorrosive paint containing mica powder on a metal substrate, drying the metal substrate on a hot table at 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate at 80-160 ℃ for 2 hours to obtain the cured magnolol-based epoxy resin coating containing mica powder.
The coatings prepared in examples 1 and 2 were tested for properties, and the test structures are shown in Table 1.
TABLE 1 coating Performance test results
As can be seen from Table 1, the bio-based epoxy resin anticorrosive coating provided by the invention has good pencil hardness, impact resistance, adhesive force strength, excellent flexibility and salt spray corrosion resistance, and is suitable for severe environments with high humidity and high salt spray corrosion. The invention uses the bio-based resin as the main film forming substance, solves the problem that the traditional bisphenol A resin has toxicity, and has higher environmental protection performance. The bio-based epoxy resin coating containing mica powder provided in the example 2 has a glass transition temperature of 61 ℃ and a five percent weight loss temperature of 314 ℃ and has good heat resistance.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The magnolol-based epoxy resin anticorrosive coating is characterized by being prepared from the following raw materials in parts by weight:
and (3) a component A: 30 parts of film forming resin;
and the component B comprises the following components: 10 parts of curing agent, 40-80 parts of solvent, 1-5 parts of mica powder, and 1-2 parts of silane coupling agent, defoamer and dispersant respectively;
the epoxy equivalent ratio of the curing agent to the film-forming resin is 1:1.
2. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the film-forming resin in the a-component is magnolol-based epoxy resin DGEM.
3. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the curing agent is polyetheramine D230 curing agent.
4. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the mica powder is natural lamellar high-purity mica powder with a particle size of 50-75 μm.
5. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the solvent is one or a mixture of two or more of toluene, xylene, n-butanol, methyl isobutyl ketone, ethyl acetate, or butyl acetate.
6. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the defoamer is one or a mixture of two of a foam breaking copolymer and a polysiloxane solution.
7. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the dispersant is one or a mixture of two or more of an interpolymer solution having an acidic group, a low molecular weight unsaturated polycarboxylic acid polymer solution, and a polyurethane-based solution.
8. The magnolol-based epoxy resin anticorrosive coating according to claim 1, wherein the coupling agent is one or a mixture of more than two of 3-aminopropyl triethoxysilane, gamma-glycidoxypropyl trimethoxysilane, gamma-methacryloxypropyl trimethoxysilane, and N- (beta-aminoethyl-gamma-aminopropyl) methyldimethoxy silane.
9. A method for preparing a novel bio-based epoxy resin anticorrosive coating containing mica powder according to any one of claims 1 to 8, comprising the steps of:
(1) Mixing a curing agent, a solvent, mica powder, a silane coupling agent, a dispersing agent and a defoaming agent at 25 ℃, stirring for 2 hours at the rotating speed of 200r/min by using a magnetic stirrer, and fully and uniformly stirring to obtain a component B;
(2) Mixing the component A and the component B, and stirring for 20 minutes by using a magnetic stirrer at the rotating speed of 200r/min to obtain the magnolol-based epoxy resin anticorrosive paint;
(3) Spraying the prepared bio-based epoxy resin anticorrosive paint on a metal substrate, drying the metal substrate on a hot table with the temperature of 50-80 ℃ for 1 hour, transferring the metal substrate into a blast oven, and heating and curing the metal substrate for 2 hours with the temperature of 80-160 ℃ to obtain the cured magnolol-based epoxy resin anticorrosive paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310542330.2A CN117025050A (en) | 2023-05-15 | 2023-05-15 | Magnolol-based epoxy resin anti-corrosion coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310542330.2A CN117025050A (en) | 2023-05-15 | 2023-05-15 | Magnolol-based epoxy resin anti-corrosion coating and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117025050A true CN117025050A (en) | 2023-11-10 |
Family
ID=88626857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310542330.2A Pending CN117025050A (en) | 2023-05-15 | 2023-05-15 | Magnolol-based epoxy resin anti-corrosion coating and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117025050A (en) |
-
2023
- 2023-05-15 CN CN202310542330.2A patent/CN117025050A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107868567B (en) | Epoxy zinc powder primer, paint matching composition and application | |
| CN110499086B (en) | Silicon-oxide-graphene-containing composite powder solvent-free epoxy coating and preparation method and application thereof | |
| CN108624194A (en) | Solventless epoxy coating, the corrosion-inhibiting coating based on its preparation and its application | |
| CN101696263B (en) | Epoxy resin curing agent, method for preparing same and application thereof | |
| CN107793884A (en) | A kind of graphene anticorrosive paint and preparation method | |
| CN114456386B (en) | Reactive epoxy modified organic silicon resin and solvent-free high-temperature-resistant coating | |
| CN103351787A (en) | High-performance rust inhibiting primer for low surface treatment of mechanical equipment and preparation method of high-performance rust inhibiting primer | |
| CN107502132B (en) | Two-component water-based epoxy anticorrosive paint | |
| CN102827528B (en) | Organic fluorosilicon epoxy paint and preparation method thereof | |
| CN110437739B (en) | Epoxy composite coating and preparation method thereof | |
| CN105062307A (en) | Two-component anticorrosive coating and preparation method thereof | |
| CN110724440B (en) | Low-temperature-resistant two-component solvent-free epoxy coating for pipeline joint coating | |
| CN115011218B (en) | Solvent-free epoxy cabin coating | |
| CN117025050A (en) | Magnolol-based epoxy resin anti-corrosion coating and preparation method thereof | |
| CN117025055A (en) | Anticorrosive coating system for outer surface of bridge steel | |
| CN111253834A (en) | Moisture-curing epoxy coating and preparation method thereof | |
| CN111303727A (en) | Solvent-free super-thick-paste organic-inorganic hybrid nano modified heavy-duty anticorrosive paint and preparation method thereof | |
| CN111234651A (en) | Water-based epoxy four-prevention paint and preparation method and application thereof | |
| CN115678403A (en) | Water-based electronic component insulating coating and preparation method thereof | |
| CN114426795B (en) | High-solid epoxy paint, preparation method and application | |
| CN112409881B (en) | Solvent-free weather-resistant epoxy anticorrosive paint and preparation method thereof | |
| CN114106658B (en) | Environment-friendly ship drinking water tank paint | |
| CN114686072B (en) | Preparation method of epoxy tree composition for high-temperature-resistant anti-corrosion coating | |
| CN113999369B (en) | Modified epoxy resin with hydrophobic property and preparation method and application thereof | |
| CN113717637B (en) | High-temperature-resistant anticorrosive paint and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |