CN116410642A - Solvent-free anti-corrosion lining coating and preparation method thereof - Google Patents
Solvent-free anti-corrosion lining coating and preparation method thereof Download PDFInfo
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- CN116410642A CN116410642A CN202111664057.8A CN202111664057A CN116410642A CN 116410642 A CN116410642 A CN 116410642A CN 202111664057 A CN202111664057 A CN 202111664057A CN 116410642 A CN116410642 A CN 116410642A
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- 238000005260 corrosion Methods 0.000 title claims abstract description 74
- 238000000576 coating method Methods 0.000 title claims abstract description 71
- 239000011248 coating agent Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims abstract description 28
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 28
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000004842 bisphenol F epoxy resin Substances 0.000 claims abstract description 16
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 238000009736 wetting Methods 0.000 claims abstract description 13
- 239000003085 diluting agent Substances 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 9
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 8
- 239000000049 pigment Substances 0.000 claims abstract description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 40
- 238000003756 stirring Methods 0.000 claims description 39
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical group OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 22
- 230000007797 corrosion Effects 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 18
- 239000011259 mixed solution Substances 0.000 claims description 14
- 239000011550 stock solution Substances 0.000 claims description 14
- -1 polysiloxane Polymers 0.000 claims description 13
- 239000002318 adhesion promoter Substances 0.000 claims description 11
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical class OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 10
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 239000004593 Epoxy Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 7
- 229910052618 mica group Inorganic materials 0.000 claims description 7
- 239000010433 feldspar Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 235000019445 benzyl alcohol Nutrition 0.000 claims description 3
- 229910021487 silica fume Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 17
- 239000003960 organic solvent Substances 0.000 abstract description 13
- 238000004132 cross linking Methods 0.000 abstract description 11
- 239000002253 acid Substances 0.000 abstract description 8
- 239000003513 alkali Substances 0.000 abstract description 8
- 150000003839 salts Chemical class 0.000 abstract description 6
- 239000013535 sea water Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 5
- 238000007654 immersion Methods 0.000 abstract description 4
- 239000003973 paint Substances 0.000 description 29
- 238000010276 construction Methods 0.000 description 15
- 238000005187 foaming Methods 0.000 description 11
- 238000005336 cracking Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000002518 antifoaming agent Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 235000010215 titanium dioxide Nutrition 0.000 description 5
- 230000001464 adherent effect Effects 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 4
- 125000003700 epoxy group Chemical group 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 239000007888 film coating Substances 0.000 description 3
- 238000009501 film coating Methods 0.000 description 3
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229920006334 epoxy coating Polymers 0.000 description 2
- 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 2
- 239000000463 material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 101710082795 30S ribosomal protein S17, chloroplastic Proteins 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000008096 xylene Substances 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
-
- 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
- C09D163/04—Epoxynovolacs
-
- 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
- C09D7/20—Diluents or solvents
-
- 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
- C09D7/45—Anti-settling agents
-
- 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
- C09D7/65—Additives macromolecular
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a solvent-free anti-corrosion lining coating and a preparation method thereof. The solvent-free anti-corrosion lining coating provided by the invention comprises a component A and a component B, wherein the component A comprises 10-20 parts of bisphenol F epoxy resin, 10-20 parts of phenolic epoxy resin, 3-10 parts of reactive diluent, 3-10 parts of benzyl alcohol, 0.5-1.5 parts of wetting dispersant, 0.5-0.8 part of defoamer, 9.5-16 parts of pigment, 36-45 parts of filler and 1.5-2.5 parts of thixotropic agent; the component B comprises 80-100 parts of epoxy resin curing agent, 6-8 parts of curing accelerator and 2-4 parts of adhesion accelerator. The solvent-free anti-corrosion lining coating provided by the invention does not contain any volatile organic solvent, has higher crosslinking density, has excellent physical and mechanical properties of adhesion and wear resistance, has excellent seawater immersion resistance, salt spray resistance, acid and alkali resistance and chemical resistance, does not generate volatile organic matters, and is beneficial to the health and environmental protection of constructors.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a solvent-free anti-corrosion lining coating and a preparation method thereof.
Background
Phenolic epoxy paint has excellent wear resistance, chemical resistance and temperature resistance, and is generally used as an anti-corrosion matching system in specific corrosion environments, such as a mud tank of an ocean oil extraction and storage platform, a sewage tank, various crude oil storage tanks, the inner wall of a temperature-resistant pipeline, the inner wall of an ocean cargo ship and the like.
Currently, in some specific corrosive environments, solvent borne phenolic epoxy coatings are typically used as corrosion protection kit systems. Because the solvent type phenolic epoxy paint volatilizes the organic solvent, the out-of-standard volatile organic matters are generated in the sealed or poorly ventilated spaces such as cabins, pipelines and the like, and the environment and constructors can be greatly injured, so that the health and environmental protection of the constructors are not facilitated.
Disclosure of Invention
The embodiment of the invention aims to provide a solvent-free anti-corrosion lining coating which does not contain volatile organic solvents, has excellent adhesive force and wear-resistant physical and mechanical properties, and has excellent performances of seawater soaking resistance, salt fog resistance, acid and alkali resistance and chemical resistance, so as to meet the requirement of long-acting anti-corrosion performance under severe corrosion environment, and solve the technical problems that the organic solvents in the traditional solvent-type phenolic epoxy coating are easy to generate out-of-standard volatile organic matters and cause great harm to environment and constructors.
In order to achieve the above purpose, the invention adopts the following technical scheme: the solvent-free anti-corrosion lining coating comprises an A component and a B component, wherein the A component comprises the following components in parts by mass:
the component B comprises the following components in parts by weight:
80-100 parts of epoxy resin curing agent;
6-8 parts of a curing accelerator;
2-4 parts of adhesion promoter.
Optionally, the mass ratio of the component A to the component B is (4-6): 1.
alternatively, the reactive diluent is trimethylolethane triglycidyl ether.
Optionally, the viscosity of the trimethylolethane triglycidyl ether is 200-300 mpa.s.
Optionally, the epoxy equivalent of the trimethylolethane triglycidyl ether is 150-170 g/eq.
Optionally, the epoxy resin curing agent is at least one of modified alicyclic amine and modified aliphatic amine.
Optionally, the defoamer is at least one of foam breaking polysiloxane and hydrophobic particles.
Optionally, the filler is at least one of barium sulfate, silica micropowder, feldspar powder and superfine mica powder.
Optionally, the thixotropic agent is polyamide wax powder.
It is another object of an embodiment of the present invention to provide a method for preparing a solvent-free anti-corrosive lining coating.
In order to achieve the above purpose, the invention adopts the following technical scheme: the solvent-free anti-corrosion lining coating preparation method capable of preparing the solvent-free anti-corrosion lining coating provided by any one of the above schemes comprises the following steps:
weighing the raw materials according to the components contained in the component A in any scheme;
adding the bisphenol F epoxy resin, the phenolic epoxy resin, the reactive diluent and the benzyl alcohol into a first mixing container, and uniformly stirring to obtain a mixed stock solution;
adding the wetting dispersant and the defoamer into the mixed stock solution, and uniformly stirring to obtain an intermediate solution;
adding the pigment, the filler and the thixotropic agent into the intermediate liquid, stirring, mixing and grinding to obtain the component A;
weighing the raw materials according to the components contained in the component B in any scheme;
adding the epoxy resin curing agent and the curing accelerator into a second mixing container, and uniformly stirring to obtain a mixed solution;
adding the adhesion promoter into the mixed solution, and uniformly stirring to obtain the component B;
and mixing the component A and the component B according to a preset mass ratio, and uniformly stirring to obtain the solvent-free anticorrosive lining coating finished product.
Compared with the prior art, the one or more technical schemes in the embodiment of the invention have at least one of the following beneficial effects:
the solvent-free anti-corrosion lining coating or the solvent-free anti-corrosion lining coating prepared by the preparation method provided by the embodiment of the invention does not contain any volatile organic solvent, does not generate volatile organic matters, and is beneficial to the health of construction staff and the environmental protection. In addition, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention has higher crosslinking density, excellent adhesive force, excellent wear resistance, physical and mechanical properties, and excellent seawater immersion resistance, salt spray resistance, acid and alkali resistance and chemical resistance, so that the long-acting anti-corrosion performance requirement under a severe corrosion environment can be well met. The solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be fully and completely cured under the normal temperature condition without heating and baking, so that a paint film with excellent performance can be obtained, and an excellent anti-corrosion protection effect can be achieved on a substrate. The solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be constructed by adopting conventional paint-free spraying, can be used for thick film coating, reduces the construction times and effectively reduces the construction cost.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be noted that the terms "a," "B," "C," and "D" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The solvent-free anti-corrosion lining coating without the volatile organic solvent provided by the embodiment of the invention has excellent adhesive force and wear-resistant physical and mechanical properties, and has excellent performances of seawater soaking resistance, salt mist resistance, acid and alkali resistance and chemical resistance at the same time so as to meet the requirement of long-acting anti-corrosion performance under severe corrosion environment. The solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be conveniently produced and constructed on the premise of not adding a volatile organic solvent, has good durability, corrosion resistance and chemical resistance, can meet the performance requirement of long-acting corrosion resistance in a severe corrosion environment, and is particularly suitable for corrosion protection of inner walls of cabins or pipelines.
The component A provided by the embodiment of the invention comprises the following components in parts by weight:
the component B comprises the following components in parts by weight:
80-100 parts of epoxy resin curing agent;
6-8 parts of a curing accelerator;
2-4 parts of adhesion promoter.
Specifically, the purity of the raw materials selected in the embodiment of the invention is more than 99.9 percent. The solvent-free anticorrosive lining coating provided by the embodiment of the invention, bisphenol F epoxy resin in the component A is SMF-170 with the epoxy equivalent of 160-180, and phenolic epoxy resin is EPALOY 8230 with the epoxy equivalent of 164-176. The component A adopts bisphenol F epoxy resin and phenolic epoxy resin, and the bisphenol F epoxy resin and the phenolic epoxy resin are mixed and used, and the viscosity ranges from 2000 to 5000mpa.s of the bisphenol F epoxy resin and the phenolic epoxy resin are much lower than that of the common bisphenol A epoxy resin, so that the production and the construction of the solvent-free anti-corrosion lining coating can be facilitated under the normal temperature condition without heating and baking without adding a volatile organic solvent. And the functionality of the bisphenol F epoxy resin and the phenolic epoxy resin is higher than that of the common bisphenol A epoxy resin, so that the paint film cured by the solvent-free anti-corrosion lining paint has high crosslinking density and high hardness, the solvent-free anti-corrosion lining paint has excellent anti-corrosion protection performance and chemical resistance, and meanwhile, the paint film can be fully cured under normal temperature conditions without heating and baking, so that the excellent paint film performance can be obtained.
The active diluent in the component A adopts trimethylolethane triglycidyl ether, and as the trimethylolethane triglycidyl ether is an epoxy modifier, the trimethylolethane triglycidyl ether is selected as auxiliary resin, and the auxiliary resin can be used as the active diluent containing epoxy groups. The use of trimethylolethane triglycidyl ether as an active diluent can effectively reduce the viscosity of bisphenol F epoxy resin and phenolic epoxy resin in the component A, so that the production and construction spraying of the paint are convenient under the condition of no addition of volatile organic solvent. Meanwhile, the trimethylolethane triglycidyl ether is polyfunctional glycidyl ether, and epoxy groups contained in the trimethylolethane triglycidyl ether and an amine curing agent participate in a crosslinking reaction in the curing process of a paint film, so that the crosslinking density can be remarkably improved, and the hardness, wear resistance and chemical corrosion resistance of the paint film are enhanced. Optionally, the epoxy equivalent of the trimethylolethane triglycidyl ether is 150-170 g/eq, so that epoxy groups contained in the trimethylolethane triglycidyl ether can participate in a crosslinking reaction with an amine curing agent in the curing process of a paint film, the crosslinking density is further improved, and the hardness, the wear resistance and the chemical corrosion resistance of the paint film are enhanced. Optionally, the viscosity of the trimethylolethane triglycidyl ether is 200-300 mpa.s, the viscosity of the solvent-free anti-corrosion lining coating system can be greatly reduced in the formula, and the production and construction spraying of the coating are facilitated under the condition that no volatile organic solvent is added.
The wetting dispersant in the A component is DISPERBYK-2070; the defoaming agent is BYK-1799, is a mixture of foam breaking polysiloxane and hydrophobic particles, has excellent defoaming effect in a system, and can effectively eliminate the defect that bubbles appear in the solvent-free anti-corrosion lining coating system in the thick film construction process, and shrinkage holes are left after foam breaking is avoided.
The pigment in the component A is one or two of titanium dioxide R-258 and carbon black, the filler is any one or more of barium sulfate, silica micropowder, feldspar powder and superfine mica powder, and the thixotropic agent is Crayvallac LV or Crayvallac LV polyamide wax powder. The Crayvallac LV polyamide wax powder is used in the solvent-free anti-corrosion lining coating system, so that the anti-settling property and the sagging resistance of the solvent-free anti-corrosion lining coating system can be improved.
The bisphenol F epoxy resin in the component A can be selected from bisphenol F epoxy resin SMF-170 produced by Sanmu chemical company, but is not limited to bisphenol F epoxy resin SMF-170 produced by Sanmu chemical company. The phenolic epoxy resin in the above-mentioned a-component may be selected from the phenolic epoxy resins EPALLOY 8230 produced by CVC company, but is not limited to the phenolic epoxy resins EPALLOY 8230 produced by CVC company. The reactive diluent in the above A component may be selected from the trimethylolethane triglycidyl ether ERISYS GE-31 manufactured by CVC company, but is not limited to the trimethylolethane triglycidyl ether ERISYS GE-31 manufactured by CVC company. The wetting dispersant in the above A-component may be a wetting dispersant selected from the group consisting of a wetting dispersant DIPERBYK-2070 manufactured by BYK company, but is not limited to a wetting dispersant DIPERBYK-2070 manufactured by BYK company. The antifoaming agent in the above-mentioned A-component may be an antifoaming agent BYK-1799 selected from the group consisting of the antifoaming agents BYK-1799 manufactured by BYK corporation, but is not limited to the antifoaming agent BYK-1799 manufactured by BYK corporation. The thixotropic agent in the above A-component may be selected from Crayvallac LV manufactured by Amara, but is not limited to Crayvallac LV manufactured by Amara. The epoxy resin curing agent in the component B can be modified alicyclic amine JH-5933 and modified aliphatic amine JH-5473 produced by Adida New Material Co., ltd, but is not limited to modified alicyclic amine JH-5933 and modified aliphatic amine JH-5473 produced by Adida New Material Co., ltd. The curing accelerator in the component B may be a curing accelerator JH-5432S selected from the group consisting of those manufactured by Adida New Material technologies Co., ltd, but is not limited to those manufactured by Adida New Material Co., ltd. The adhesion promoter in the above-mentioned component B may be selected from the group consisting of Adher 1121 manufactured by Hamming corporation, but is not limited to Adher 1121 manufactured by Hamming corporation.
Compared with the prior art, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention does not contain any volatile organic solvent or volatile organic matters, and is beneficial to the health and environmental protection of constructors. In addition, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be fully and completely cured under the normal temperature condition without heating and baking, so that a paint film with excellent performance is obtained, and an excellent anti-corrosion protection effect is achieved on a substrate. Meanwhile, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be constructed by adopting conventional paint-free spraying, so that thick film coating can be performed, the construction times are reduced, and the construction cost is effectively reduced. In addition, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention has higher crosslinking density, excellent adhesive force, excellent wear resistance, physical and mechanical properties, and excellent seawater immersion resistance, salt spray resistance, acid and alkali resistance and chemical resistance, so that the long-acting anti-corrosion performance requirement under a severe corrosion environment can be well met.
Optionally, in some embodiments, the construction is performed by using the component A and the component B according to the mass ratio of (4-6): 1, and uniformly mixing the components.
Alternatively, in some of these embodiments, the reactive diluent is trimethylolethane triglycidyl ether, the viscosity of the trimethylolethane triglycidyl ether is 200 to 300mpa.s, and the epoxide equivalent of the trimethylolethane triglycidyl ether is 150 to 170g/eq.
Optionally, in some of these embodiments, the epoxy resin curing agent is at least one of a modified cycloaliphatic amine and a modified aliphatic amine. Specifically, the epoxy resin curing agent comprises 70-80 parts of modified alicyclic amine and 10-20 parts of modified aliphatic amine by mass. In the process of curing the paint film, epoxy groups contained in the trimethylolethane triglycidyl ether, the modified alicyclic amine and the modified aliphatic amine participate in a crosslinking reaction, so that the crosslinking density can be improved, and the hardness, the wear resistance and the chemical corrosion resistance of the paint film are enhanced.
Optionally, in some embodiments, the defoaming agent is at least one of foam breaking polysiloxane and hydrophobic particles, and the defoaming agent can effectively eliminate bubbles generated in the solvent-free anti-corrosion lining coating system in the thick film construction process, so that the defect that shrinkage holes are left after foam breaking is avoided.
Optionally, in some embodiments, the filler is at least one of barium sulfate, silica fume, feldspar powder, and ultrafine mica powder. Alternatively, in some embodiments, the thixotropic agent is a polyamide wax powder, which may improve the anti-settling and sag resistance of the solvent-free anti-corrosive lining coating system.
The embodiment of the invention also provides a preparation method of the solvent-free anti-corrosion lining coating in the embodiment, which comprises the following steps:
step S01: weighing all the raw materials according to the components contained in the component A of the solvent-free anticorrosive lining coating in any embodiment;
step S02: adding bisphenol F epoxy resin, phenolic epoxy resin, reactive diluent and benzyl alcohol into a first mixing container, and uniformly stirring to obtain mixed stock solution;
step S03: adding a wetting dispersant and a defoaming agent into the mixed stock solution, and uniformly stirring to obtain an intermediate solution;
step S04: adding pigment, filler and thixotropic agent into the intermediate liquid, stirring, mixing and grinding to obtain a component A;
step S05: weighing the raw materials according to the components contained in the component B of the solvent-free anticorrosive lining coating in any embodiment;
step S06: adding an epoxy resin curing agent and a curing accelerator into a second mixing container, and uniformly stirring to obtain a mixed solution;
step S07: adding an adhesion promoter into the mixed solution, and uniformly stirring to obtain a component B;
step S08: and mixing the component A and the component B according to a preset mass ratio, and uniformly stirring to obtain the solvent-free anti-corrosion lining coating finished product.
The solvent-free anti-corrosion lining coating prepared by the solvent-free anti-corrosion lining coating preparation method provided by the embodiment of the invention does not contain any volatile organic solvent or volatile organic matters, and is beneficial to the health of construction staff and the environmental protection. In addition, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be fully and completely cured under the normal temperature condition without heating and baking, so that a paint film with excellent performance is obtained, and an excellent anti-corrosion protection effect is achieved on a substrate. Meanwhile, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention can be constructed by adopting conventional paint-free spraying, so that thick film coating can be performed, the construction times are reduced, and the construction cost is effectively reduced. In addition, the solvent-free anti-corrosion lining coating provided by the embodiment of the invention has higher crosslinking density, excellent adhesive force, excellent physical and mechanical properties of wear resistance, excellent seawater immersion resistance, salt spray resistance, acid and alkali resistance and chemical resistance, and can well meet the requirement of long-acting anti-corrosion performance in a severe corrosion environment.
In order that the details and operation of the above-described embodiments of the present invention may be clearly understood by those skilled in the art, and that the advanced performance of the solvent-free anticorrosive lining coating of the present invention and the method of preparing the same may be significantly embodied, the practice of the present invention will be illustrated by the following examples. The raw materials of each component of the A component and the B component in examples 1 to 3 and the mass parts thereof are shown in Table 1.
Table 1 raw materials for each of the A component and the B component in examples 1 to 3 and parts by weight thereof
It should be noted that the raw materials used in the following examples and comparative examples are commercially available industrial products unless otherwise specified.
Example 1
The preparation method of the solvent-free anti-corrosion lining coating comprises the following steps:
1) And (3) preparing a component A: mixing 10 parts of bisphenol F epoxy resin SMF-170, 20 parts of phenolic epoxy resin EPALLOY 8230, 3 parts of trimethylolethane glycidyl ether ERISYS GE-31 and 10 parts of benzyl alcohol, and stirring at high speed to uniformly disperse to obtain a mixed stock solution; adding 0.5 part of wetting dispersant DIPERBYK-2070 and 0.5 part of defoamer BYK-1799 into the mixed stock solution, and stirring and dispersing at a high speed to obtain an intermediate solution; adding 9.5 parts of titanium white R-258, 25 parts of feldspar powder, 20 parts of ultrafine mica powder and 1.5 parts of Crayvallac LV into the intermediate liquid, stirring at a high speed, dispersing uniformly, and grinding by sand grinding to ensure that the fineness is less than 60 mu m to prepare a component A;
2) And (2) preparing a component B: firstly, 70 parts of modified alicyclic amine JH-5933, 20 parts of modified aliphatic amine JH-5473 and 8 parts of curing agent accelerator JH-5432S are mixed, and stirred and dispersed uniformly at a high speed to obtain a mixed solution; then adding 2 parts of an adhesion promoter Adherent 1121 into the mixed solution, and stirring until the mixture is uniform to prepare a component B;
3) And mixing the component A and the component B according to the weight ratio of 6:1, and uniformly stirring to prepare the solvent-free anti-corrosion lining coating.
Example 2
The preparation method of the solvent-free anti-corrosion lining coating comprises the following steps:
1) And (3) preparing a component A: mixing 15 parts of bisphenol F epoxy resin SMF-170, 15 parts of phenolic epoxy resin EPALLOY 8230, 7 parts of trimethylolethane glycidyl ether ERISYS GE-31 and 6 parts of benzyl alcohol, and stirring at a high speed to uniformly disperse to obtain a mixed stock solution; adding 1 part of wetting dispersant DISPERBYK-2070 and 0.6 part of defoamer BYK-1799 into the mixed stock solution, and stirring and dispersing at a high speed to obtain an intermediate solution; adding 13 parts of titanium white R-258, 0.4 part of extra black 6, 20 parts of silicon micropowder, 20 parts of ultrafine mica powder and 2 parts of Crayvallac LV into the intermediate liquid, stirring at a high speed, dispersing uniformly, and grinding by sand grinding to ensure that the fineness is less than 60 mu m to prepare a component A;
2) And (2) preparing a component B: firstly, 75 parts of modified alicyclic amine JH-5933, 15 parts of modified aliphatic amine JH-5473 and 7 parts of curing agent accelerator JH-5432S are mixed, and stirred and dispersed uniformly at a high speed to obtain a mixed solution; then adding 3 parts of an adhesion promoter Adherent 1121 into the mixed solution, and stirring until the mixture is uniform to prepare a component B;
3) And mixing the component A and the component B according to the weight ratio of 5:1, and uniformly stirring to prepare the solvent-free anti-corrosion lining coating.
Example 3
The preparation method of the solvent-free anti-corrosion lining coating comprises the following steps:
1) And (3) preparing a component A: mixing 20 parts of bisphenol F epoxy resin SMF-170, 10 parts of phenolic epoxy resin EPALLOY 8230, 10 parts of trimethylolethane glycidyl ether ERISYS GE-31 and 3 parts of benzyl alcohol, and stirring at high speed to uniformly disperse to obtain a mixed stock solution; adding 1.5 parts of wetting dispersant DIPERBYK-2070 and 0.8 parts of defoamer BYK-1799 into the mixed stock solution, and stirring and dispersing at a high speed to obtain an intermediate solution; adding 16 parts of titanium white R-258, 0.2 part of extra black 6, 18 parts of feldspar powder, 18 parts of precipitated barium sulfate and 2.5 parts of Crayvallac LV into the intermediate liquid, stirring at a high speed, dispersing uniformly, and grinding by sand grinding to ensure that the fineness is less than 60 mu m to prepare a component A;
2) And (2) preparing a component B: firstly, mixing 80 parts of modified alicyclic amine JH-5933, 10 parts of modified aliphatic amine JH-5473 and 6 parts of curing agent accelerator JH-5432S, and stirring at a high speed to uniformly disperse to obtain a mixed solution; then adding 4 parts of an adhesion promoter Adherent 1121 into the mixed solution, and stirring until the mixture is uniform to prepare a component B;
3) And mixing the component A and the component B according to the weight ratio of 4:1, and uniformly stirring to prepare the solvent-free anti-corrosion lining coating.
Comparative example
1) And C, preparing a component: mixing 30 parts of bisphenol A epoxy resin SMF-170 and 13 parts of benzyl alcohol, and stirring at a high speed to uniformly disperse to obtain a mixed stock solution; adding 1.0 part of wetting dispersant DIPERBYK-2070 and 0.6 part of defoamer BYK-1799 into the mixed stock solution, and stirring and dispersing at a high speed to obtain an intermediate solution; adding 13 parts of titanium white R-258, 0.4 part of extra black 6, 20 parts of silicon micropowder, 20 parts of superfine mica powder and 2 parts of CrayvallacLV into the intermediate liquid, stirring at a high speed, dispersing uniformly, and grinding by sand grinding to ensure that the fineness is less than 60 mu m to prepare a component C;
2) And D, preparing a component: firstly, 75 parts of modified alicyclic amine JH-5933, 15 parts of modified aliphatic amine JH-5473 and 7 parts of curing agent accelerator JH-5432S are mixed, and stirred and dispersed uniformly at a high speed to obtain a mixed solution; then adding 3 parts of an adhesion promoter Adherent 1121 into the mixed solution, and stirring until the mixture is uniform to prepare a component D;
3) And mixing the component C and the component D according to the weight ratio of 5.3:1, and uniformly stirring to prepare the solvent-free anti-corrosion lining coating.
Paint Performance test
The solvent-free anticorrosive lining coatings prepared in examples 1 to 3 and comparative example were sprayed by a airless spraying method with a total film thickness of 350 to 400 μm and a sample plate maintained in a constant temperature room for 7 days, and after degreasing the steel plate, the performance test was performed by sand blasting, the surface cleanliness of the steel plate reached to the level of Sa2.5 and the roughness was medium, and the test items are shown in Table 2.
Table 2 test items of solvent-free anticorrosive lining coatings prepared in examples 1 to 3 and comparative example
| Detecting items | Technical index | Detection standard |
| Adhesion force | ≥15MPa | GB/T 5210 |
| Wear resistance, 1000 revolutions, 1000g, CS17 | ≤50mg | GB/T1768 |
| Salt spray resistance, 6000 hours | The paint film has no rust, foaming, cracking and flaking | GB/T 1771 |
| Resistant to 5% NaCl solution for 6000 hours | The paint film has no rust, foaming, cracking and flaking | GB/T 9274 |
| Heat and humidity resistance, 6000 hours | The paint film has no rust, foaming, cracking and flaking | GB/T1740 |
| Resistant to 10% H 2 SO 4 90 days | The paint film has no rust, foaming, cracking and flaking | GB/T 9274 |
| 10% NaOH-resistant for 90 days | The paint film has no rust, foaming, cracking and flaking | GB/T 9274 |
| Crude oil resistant to 80 ℃ for 90 days | The paint film has no rust, foaming, cracking and flaking | GB/T 9274 |
| Xylene resistance, 90 days | The paint film has no foaming, cracking and flaking | GB/T 9274 |
| Propylene glycol methyl ether resistance for 90 days | The paint film has no foaming, cracking and flaking | GB/T 9274 |
| Cyclohexanone-resistant for 30 days | The paint film has no foaming, cracking and flaking | GB/T 9274 |
| Gasoline resistance for 30 days | The paint film has no foaming, cracking and flaking | GB/T 9274 |
The results of the performance tests conducted on the solvent-free anticorrosive lining coatings prepared in examples 1 to 3 and comparative examples, respectively, according to the test items in table 2 are shown in table 3, respectively.
Table 3 test results of solvent-free anticorrosive lining coatings prepared in examples 1 to 3 and comparative example
As can be seen from Table 3, the solvent-free anticorrosive lining coatings of examples 1 to 3 of the present invention were better in adhesion and abrasion resistance than the solvent-free anticorrosive lining coating of comparative example, and the solvent-free anticorrosive lining coating of comparative example was resistant to 10% H 2 SO 4 After the test of foaming, rusting, crude oil resistance at 80 ℃ and cyclohexanone resistance and gasoline resistance, the paint film is foamed. As is apparent from the above-mentioned performance test results, the solvent-free anticorrosive lining coating materials of examples 1 to 3 have not only relatively good mechanical properties such as adhesion, abrasion resistance, etc., but also excellent corrosion resistance, wet heat resistance, acid and alkali resistance, and chemical resistance, and thus have excellent anticorrosive protection effects. Therefore, the solvent-free anti-corrosion lining coating is suitable for being used in closed spaces such as cabins or pipeline inner walls, and the like, and can achieve the effects of long-term corrosion resistance and chemical protection on a substrate in the environment requiring the coating to be resistant to acid, alkali and chemicals, and has no volatile organic solvent in the production and construction processes, and is low in toxicity and environment-friendly.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The solvent-free anti-corrosion lining coating is characterized by comprising an A component and a B component, wherein the A component comprises the following components in parts by mass:
the component B comprises the following components in parts by weight:
80-100 parts of epoxy resin curing agent;
6-8 parts of a curing accelerator;
2-4 parts of adhesion promoter.
2. The solvent-free anticorrosive lining coating according to claim 1, wherein the mass ratio of the a component and the B component is (4 to 6): 1.
3. the solventless anticorrosive lining coating of claim 1 wherein the reactive diluent is trimethylolethane triglycidyl ether.
4. The solvent-free, corrosion-resistant lining coating of claim 3, wherein the tris-glycidyl ether of trimethylolethane has a viscosity of 200 to 300mpa.s.
5. The solventless anticorrosive lining coating of claim 3 wherein the trimethylolethane triglycidyl ether has an epoxy equivalent of 150-170 g/eq.
6. The solventless anticorrosive lining coating of claim 1 wherein the epoxy resin curing agent is at least one of a modified cycloaliphatic amine and a modified aliphatic amine.
7. The solvent-free, corrosion-resistant lining coating of any one of claims 1 to 6, wherein the defoamer is at least one of foam breaking polysiloxane and hydrophobic particles.
8. The solventless anticorrosive lining coating of any one of claims 1 through 6 wherein the filler is at least one of barium sulfate, silica fume, feldspar powder, and ultrafine mica powder.
9. The solventless anticorrosive lining coating of any one of claims 1 through 6 wherein the thixotropic agent is a polyamide wax powder.
10. The preparation method of the solvent-free anti-corrosion lining coating is characterized by comprising the following steps of:
the components contained in the a component according to any one of claims 1 to 9 are weighed out separately;
adding the bisphenol F epoxy resin, the phenolic epoxy resin, the reactive diluent and the benzyl alcohol into a first mixing container, and uniformly stirring to obtain a mixed stock solution;
adding the wetting dispersant and the defoamer into the mixed stock solution, and uniformly stirring to obtain an intermediate solution;
adding the pigment, the filler and the thixotropic agent into the intermediate liquid, stirring, mixing and grinding to obtain the component A;
the components contained in the B component according to any one of claims 1 to 9 are weighed out separately;
adding the epoxy resin curing agent and the curing accelerator into a second mixing container, and uniformly stirring to obtain a mixed solution;
adding the adhesion promoter into the mixed solution, and uniformly stirring to obtain the component B;
and mixing the component A and the component B according to a preset mass ratio, and uniformly stirring to obtain the solvent-free anticorrosive lining coating finished product.
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