CN116875139A - Ship water-based anti-corrosion paint and preparation method thereof - Google Patents
Ship water-based anti-corrosion paint and preparation method thereof Download PDFInfo
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- CN116875139A CN116875139A CN202310922028.XA CN202310922028A CN116875139A CN 116875139 A CN116875139 A CN 116875139A CN 202310922028 A CN202310922028 A CN 202310922028A CN 116875139 A CN116875139 A CN 116875139A
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- water
- parts
- emulsion
- acrylic ester
- emulsifier
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000003973 paint Substances 0.000 title claims abstract description 85
- 238000005260 corrosion Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title description 66
- 239000000839 emulsion Substances 0.000 claims abstract description 138
- -1 acrylic ester Chemical class 0.000 claims abstract description 74
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 66
- 239000002994 raw material Substances 0.000 claims abstract description 51
- 239000000178 monomer Substances 0.000 claims abstract description 28
- 239000003999 initiator Substances 0.000 claims abstract description 22
- 239000002562 thickening agent Substances 0.000 claims abstract description 19
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 16
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims abstract description 16
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims abstract description 14
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims abstract description 11
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Substances OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000049 pigment Substances 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000010445 mica Substances 0.000 claims abstract description 8
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000012874 anionic emulsifier Substances 0.000 claims description 28
- 238000003756 stirring Methods 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 17
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 12
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 3
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000010422 painting Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 38
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 36
- 239000000126 substance Substances 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 238000000576 coating method Methods 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 11
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 238000007334 copolymerization reaction Methods 0.000 description 7
- 238000005536 corrosion prevention Methods 0.000 description 6
- 238000013112 stability test Methods 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012875 nonionic emulsifier Substances 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000001804 emulsifying effect Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 description 3
- IBLKWZIFZMJLFL-UHFFFAOYSA-N 1-phenoxypropan-2-ol Chemical compound CC(O)COC1=CC=CC=C1 IBLKWZIFZMJLFL-UHFFFAOYSA-N 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 125000005396 acrylic acid ester group Chemical group 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- WDHYRUBXLGOLKR-UHFFFAOYSA-N phosphoric acid;prop-2-enoic acid Chemical class OC(=O)C=C.OP(O)(O)=O WDHYRUBXLGOLKR-UHFFFAOYSA-N 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide 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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The application relates to the technical field of painting, and particularly discloses water-based anticorrosive paint for ships. The ship water-based anti-corrosion paint comprises the following components in parts by weight: 100-120 parts of acrylic ester emulsion, 0.5-1 part of defoamer, 5-7 parts of film forming auxiliary agent, 0.3-0.5 part of anti-settling agent, 0.3-0.5 part of thickener, 1-1.5 parts of dispersing agent, 20-25 parts of pigment and filler, 30-40 parts of mica powder and 10-20 parts of water; the acrylic ester emulsion is prepared from the following raw materials: methyl methacrylate, mixed monomer composed of butyl acrylate and methacrylate, functional monomer composed of vinyl triethoxysilane and phosphoric acid acrylic ester, emulsifier, initiator and water. The water-based anti-corrosion paint provided by the application has the advantages of higher adhesion with steel structures, higher paint film compactness and excellent anti-corrosion performance.
Description
Technical Field
The application relates to the technical field of painting, in particular to water-based anticorrosive paint for ships and a preparation method thereof.
Background
Anticorrosive paint is generally divided into conventional anticorrosive paint and heavy duty anticorrosive paint, and is an indispensable paint in paint coating. The conventional anticorrosive paint plays a role in corrosion prevention on metals and the like under the general condition, and protects the service life of nonferrous metals; heavy duty anticorrosive coatings are a class of anticorrosive coatings that can be applied in relatively harsh corrosive environments and have a longer shelf life than conventional anticorrosive coatings.
The corrosion protection principle of the general corrosion protection paint is that the chemical, physical and electrochemical directions are as follows:
the chemical principle of corrosion prevention is to neutralize harmful acid-base substances into neutral harmless substances to protect the materials in the corrosion-resistant coating from being damaged by corrosive substances. Some amphoteric compounds such as aluminum hydroxide, barium hydroxide, zinc oxide and the like are often added into the antirust coating, and the substances can easily react with acid-base harmful substances to realize the anticorrosion effect.
The physical principle of corrosion prevention is to use a film forming agent to obtain a compact corrosion-resistant coating to isolate damage of corrosion-resistant substances to protected materials, for example, lead soap can be formed after a lead-containing coating reacts with oil, so that the compactness of the corrosion-resistant coating is ensured.
The electrochemical function of corrosion prevention is to add special substances into the anti-rust paint, so that when water and oxygen pass through the anti-rust paint, corrosion prevention ions are formed, the surfaces of metals such as steel are passivated, the dissolution of the metal ions is prevented, and the aim of corrosion prevention is achieved.
In recent years, water-based anticorrosive paint has become a research and development hotspot of industrial anticorrosive paint. And with the continuous development of materials such as novel water-based resin, novel antirust pigment and the like, the performance of the water-based anticorrosive paint is continuously improved, and the water-based anticorrosive paint is widely applied to the fields of building decoration, automobiles, ships, container manufacturing and the like. The current varieties of water-based anticorrosive coatings are mainly focused on water-based inorganic zinc-rich primer, water-based epoxy series coating, water-based acrylic coating, water-based polyurethane coating and the like.
The adhesion of the coating to the metal to be protected is the most important technical indicator for selecting the water-based anticorrosive paint, however, the adhesion problem between the water-based anticorrosive paint and the steel structure is the most difficult problem to handle. The main body of the water-based anticorrosive paint is organic resin, the metal is of an inorganic structure, and the adhesion between the organic resin and the inorganic structure is not very firm. Therefore, the conventional water-based anti-corrosion paint is simply coated on the steel structure, the protective layer cannot last, the old paint film needs to be removed regularly, and the anti-corrosion paint is recoated, so that the problem of high cost exists.
Disclosure of Invention
In order to solve the problem of low adhesion between the water-based anti-corrosion paint and the steel structure, the application provides the water-based anti-corrosion paint for the ship and a preparation method thereof.
In a first aspect, the application provides a ship water-based anti-corrosion paint, which adopts the following technical scheme:
the ship water-based anti-corrosion paint comprises the following components in parts by weight: 100-120 parts of acrylic ester emulsion, 0.5-1 part of defoamer, 5-7 parts of film forming auxiliary agent, 0.3-0.5 part of anti-settling agent, 0.3-0.5 part of thickener, 1-1.5 parts of dispersing agent, 20-25 parts of pigment and filler, 30-40 parts of mica powder and 10-20 parts of water;
the acrylic ester emulsion is prepared from the following raw materials: methyl methacrylate, mixed monomer composed of butyl acrylate and methacrylate, functional monomer composed of vinyl triethoxysilane and phosphoric acid acrylic ester, emulsifier, initiator and water.
By adopting the technical scheme, the dry-wet adhesive force of the film forming substance on the metal surface directly influences the rust resistance of the metal corrosion-resistant water paint. The phosphate ester molecules have strong chelation between the phosphate hydroxyl and the surface of the metal substrate, and form a complex with polyvalent metal; after the phosphate is linked to the polymer molecules, the polymer molecules can be firmly linked to the surface of the metal substrate in a covalent bond mode, so that the adhesive force of the water-based anticorrosive paint on the metal substrate is improved. In addition, the compact phosphate protective film formed by the phosphate groups in the polymer molecules and the metal substrate passivates the surface of the metal substrate, prevents the metal substrate from contacting with corrosive media, and improves the corrosion resistance and rust resistance.
The corrosion resistance of the paint film has a great correlation with the crosslinking density and water resistance of the paint film, and the crosslinking density of the paint film is improved and the compactness of the paint film is improved by adding vinyl triethoxysilane to the acrylate emulsion to copolymerize with acrylic esters and introducing hydrolytic condensation siloxane to the main chain.
Further preferably, the acrylate emulsion is prepared by the steps of:
mixing 80-90% of emulsifying agent and functional monomer with water, heating and stirring, and simultaneously adding 80-90% of mixed monomer to obtain stable pre-emulsion;
mixing 10-20% of emulsifying agent with water, heating and stirring, sequentially adding 80-90% of initiator and 10-20% of mixed monomer, and obtaining seed emulsion after the reaction;
adding 10-20% of initiator and seed emulsion into the pre-emulsion, and heating for reaction to obtain the acrylic ester emulsion.
By adopting the technical scheme, the performances of the obtained acrylic ester emulsion are greatly different in different preparation processes, and most of the processes at present are used for reducing the cost and improving the production efficiency, the polymerized monomers and the functional monomers are often directly mixed, and the initiator is added and then heated for reaction, so that the performance of the obtained polymer emulsion is poor, and the anti-seepage performance and the adhesive force are poor. According to the application, if the adding sequence of each component is adjusted, the emulsifier is adopted to pre-emulsify most of monomer raw materials, then emulsify a small part of raw material monomers, and then the mixture is reacted, so that the finally obtained acrylic emulsion has the characteristics of high adhesive force and excellent anti-corrosion performance.
Further preferably, the acrylate emulsion comprises the following raw materials in parts by weight: 100-120 parts of methyl methacrylate, 100-120 parts of butyl acrylate, 8-10 parts of methacrylate, 5-8 parts of vinyl triethoxysilane, 8-10 parts of phosphoric acid acrylic ester, 6-8 parts of emulsifying agent, 1-3 parts of initiator and 80-100 parts of water.
Further preferably, the emulsifier is formed by mixing a reactive emulsifier and an anionic emulsifier, wherein the weight ratio of the reactive emulsifier to the anionic emulsifier is 1 (0.2-0.5);
the structural general formula of the reactive emulsifier is as follows:
wherein n=10-40.
By adopting the technical scheme, when the acrylic ester is prepared in an emulsion polymerization mode, various surfactants are used, and the surfactants are very effective in polymerization, but bring about a plurality of defects. The application adopts the reactive emulsifier and the anionic emulsifier to compound, can obtain emulsion with higher stability, and the obtained acrylic ester emulsion has the characteristics of small particle size, excellent mechanical property and stability. The structural formula of the reactive emulsifier is shown as the above formula, and after the reactive nonionic emulsifier is compounded with the anionic emulsifier, the reactive emulsifier not only has excellent emulsifying capacity, but also has good water resistance.
Preferably, in the general formula (I), n is 10, 20, 30 or 40.
Preferably, the anionic emulsifier is selected from one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dibutyl ester sulfosuccinate.
Preferably, the pigment and filler is selected from one or more of ZAPP chromium-free aluminum zinc polyphosphate hydrate, low-lead zinc phosphate and aluminum tripolyphosphate.
Preferably, the thickener is selected from one of modified acrylate thickener, hydrophobically modified water swelling thickener and polyurea modified thickener.
Preferably, the defoaming agent is selected from one of mineral oil defoaming agents and organic silicon defoaming agents.
Preferably, the film forming auxiliary agent is selected from one of polyethylene glycol, propylene glycol phenyl ether, alcohol ester twelve and ethylene glycol butyl ether.
Preferably, the dispersing agent is selected from one of sodium tripolyphosphate, sodium tetrapolyphosphate and sodium hexametaphosphate.
Preferably, the anti-settling agent is selected from one of polyvinyl alcohol and fumed silica.
In a second aspect, the application provides a preparation method of a ship water-based anti-corrosion paint, which adopts the following technical scheme:
the preparation method of the ship water-based anti-corrosion paint comprises the following steps:
and uniformly mixing the defoaming agent, the anti-settling agent, the dispersing agent, the pigment and filler, the mica powder and the water, adding the rest acrylic ester emulsion, the film forming auxiliary agent and the thickening agent, uniformly mixing, and discharging to obtain the ship water-based anti-corrosion paint.
By adopting the technical scheme, the preparation process of the anti-corrosion paint provided by the application is simple to operate, does not involve special conditions such as high temperature and high pressure, has higher production efficiency, is suitable for industrial mass production, and the prepared ship water-based anti-corrosion paint has excellent adhesive force, waterproof performance and mechanical performance.
In summary, the application has the following beneficial effects:
(1) The application adopts vinyl triethoxysilane and phosphoric acid acrylic ester as functional monomers to carry out copolymerization, which can obviously improve the adhesive force of the water-based anticorrosive paint on a metal substrate, improve the compactness of the water-based anticorrosive paint and improve the water resistance and mechanical property of the water-based anticorrosive paint;
(2) The application also provides a preparation process of the acrylic ester emulsion, which comprises the steps of pre-emulsifying most of raw material monomers and functional monomers by adopting an emulsifier by adjusting the adding sequence of raw materials, emulsifying a small part of raw material monomers and functional monomers, and mixing the raw material monomers and the functional monomers for reaction, wherein the finally obtained acrylic ester emulsion has the characteristics of high stability and high water resistance, and the correspondingly obtained acrylic ester emulsion has good stability, small particle size and excellent performance of the prepared water-based anticorrosive paint;
(3) When the acrylic ester emulsion is prepared, the reactive emulsifier and the anionic emulsifier are compounded, and a proper proportion is adopted, so that the pre-emulsion and the seed emulsion with high stability can be obtained, and meanwhile, the obtained acrylic ester emulsion has the characteristics of small particle size, excellent mechanical property and stability.
Drawings
FIG. 1 shows chemical structural formulas of formula (I-1), formula (I-2), formula (I-3) and formula (I-4).
Detailed Description
The application is described in further detail below with reference to the drawings and examples.
The acrylic ester emulsion is self-made, and the initiator used in the raw material components of the acrylic ester emulsion adopts ammonium persulfate.
The ship water-based anti-corrosion paint comprises the following raw material components in parts by weight:
the pigment and filler can be selected from one or more of ZAPP chromium-free aluminum zinc polyphosphate hydrate, low-lead zinc phosphate and aluminum tripolyphosphate, and the low-lead zinc phosphate is preferred in various embodiments of the application.
The thickener used is one of modified acrylic ester thickener, hydrophobic modified water swelling thickener and polyurea modified thickener, and the embodiment of the application is preferably modified acrylic ester thickener, model c-3, which is purchased from the middle federal thickener.
The defoamer is selected from one of mineral oil defoamer and organic silicon defoamer, and the embodiment of the application is preferably organic silicon defoamer, model B-110, and is purchased from a middle federal thickener.
The film forming additive is selected from one of polyethylene glycol, propylene glycol phenyl ether, alcohol ester twelve and ethylene glycol butyl ether, and polyethylene glycol is preferred in each embodiment of the application.
The dispersant is selected from one of sodium tripolyphosphate, sodium tetrapolyphosphate and sodium hexametaphosphate, and sodium tripolyphosphate is preferred in each embodiment of the application.
The anti-settling agent is selected from one of polyvinyl alcohol and fumed silica, and the polyvinyl alcohol is preferred in each embodiment of the application.
Preparation example
Preparation example 1
An acrylic ester emulsion is prepared by the following steps:
s1, mixing 4.8kg of an emulsifying agent, 5kg of vinyl triethoxysilane, 8kg of phosphoric acid acrylic ester and 60kg of water, heating to 45 ℃, stirring for 20min at 600r/min, simultaneously adding 80kg of methyl methacrylate, 80kg of butyl acrylate and 6.4kg of methacrylic acid ester, and continuously stirring for 30min to obtain a stable pre-emulsion;
s2, mixing 1.2kg of emulsifying agent with 20kg of water, heating to 45 ℃, stirring for 10min at 600r/min, sequentially adding 0.8kg of initiator, 20kg of methyl methacrylate, 20kg of butyl acrylate and 1.6kg of methacrylate, and obtaining seed emulsion after the reaction;
s3, adding 0.2kg of initiator and seed emulsion into the pre-emulsion, heating to 92 ℃ for copolymerization, and obtaining the acrylic ester emulsion after the reaction is completed.
The emulsifier consists of a reactive emulsifier and an anionic emulsifier according to the weight ratio of 1:0.2, wherein the reactive emulsifier adopts a formula (I-1), and the chemical structural formula is shown in figure 1; the anionic emulsifier is sodium dodecyl sulfate.
Preparation example 2
S1, mixing 5.2kg of an emulsifying agent, 6.5kg of vinyl triethoxysilane, 9kg of phosphoric acid acrylic ester and 70kg of water, heating to 45 ℃ and stirring at 600r/min for 20min, simultaneously adding 88kg of methyl methacrylate, 88kg of butyl acrylate and 7.2kg of methacrylic acid ester, and continuously stirring for 30min to obtain a stable pre-emulsion;
s2, mixing 1.4kg of emulsifying agent with 20kg of water, heating to 45 ℃, stirring for 10min at 600r/min, sequentially adding 1.6kg of initiator, 22kg of methyl methacrylate, 22kg of butyl acrylate and 0.8kg of methacrylate, and obtaining seed emulsion after the reaction;
s3, adding 0.4kg of initiator and seed emulsion into the pre-emulsion, heating to 92 ℃ for copolymerization, and obtaining the acrylic ester emulsion after the reaction is completed.
The emulsifier consists of a reactive emulsifier and an anionic emulsifier according to the weight ratio of 1:0.2, wherein the reactive emulsifier adopts a formula (I-1), and the chemical structural formula is shown in figure 1; the anionic emulsifier is sodium dodecyl sulfate.
Preparation example 3
An acrylic ester emulsion is prepared by the following steps:
s1, mixing 6.4kg of an emulsifying agent, 8kg of vinyl triethoxysilane, 10kg of phosphoric acid acrylic ester and 80kg of water, heating to 45 ℃ and stirring at 600r/min for 30min, simultaneously adding 96kg of methyl methacrylate, 96kg of butyl acrylate and 8kg of methacrylic ester, and continuously stirring for 30min to obtain a stable pre-emulsion;
s2, mixing 1.6kg of emulsifying agent with 20kg of water, heating to 45 ℃, stirring for 15min at 600r/min, sequentially adding 2.4kg of initiator, 24kg of methyl methacrylate, 24kg of butyl acrylate and 2kg of methacrylate, and obtaining seed emulsion after the reaction is finished;
s3, adding 0.6kg of initiator and seed emulsion into the pre-emulsion, heating to 92 ℃ for copolymerization, and obtaining the acrylic ester emulsion after the reaction is completed.
The emulsifier consists of a reactive emulsifier and an anionic emulsifier according to the weight ratio of 1:0.2, wherein the reactive emulsifier adopts a formula (I-1), and the chemical structural formula is shown in figure 1; the anionic emulsifier is sodium dodecyl sulfate.
Preparation example 4
An acrylic ester emulsion is different from the preparation example 1 in that the emulsifier consists of a reactive emulsifier and an anionic emulsifier according to the weight ratio of 1:0.2, wherein the reactive emulsifier adopts a formula (I-1), and the chemical structural formula is shown in the attached figure 1; the anionic emulsifier is sodium dodecyl sulfate.
Preparation example 5
An acrylic emulsion differs from that of preparation 1 in that sodium dodecylbenzenesulfonate is used as the anionic emulsifier.
Preparation example 6
An acrylate emulsion differs from preparation 1 in that the anionic emulsifier is dibutyl sodium sulfosuccinate.
Preparation example 7
An acrylic emulsion differs from preparation 1 in that the reactive emulsifier is of formula (I-2), the chemical structure of which is shown in figure 1.
Preparation example 8
An acrylic emulsion differs from preparation 1 in that the reactive emulsifier is of formula (I-3), the chemical structure of which is shown in figure 1.
Preparation example 9
An acrylic emulsion differs from preparation 1 in that the reactive emulsifier is of formula (I-4), the chemical structure of which is shown in figure 1.
Preparation example 10
An acrylic ester emulsion differs from that of preparation 1 in that the weight ratio of formula (I-1) to sodium lauryl sulfate is 1:0.35.
PREPARATION EXAMPLE 11
An acrylic ester emulsion differs from that of preparation 1 in that the weight ratio of formula (I-1) to sodium lauryl sulfate is 1:0.5.
Comparative preparation example 1
An acrylic ester emulsion is prepared by the following steps:
s1, mixing 4.8kg of an emulsifying agent, 8kg of phosphoric acid acrylic ester and 60kg of water, heating to 45 ℃, stirring for 20min at 600r/min, simultaneously adding 80kg of methyl methacrylate, 80kg of butyl acrylate and 6.4kg of methacrylic ester, and continuously stirring for 30min to obtain a stable pre-emulsion;
s2, mixing 1.2kg of emulsifying agent with 20kg of water, heating to 45 ℃, stirring for 10min at 600r/min, sequentially adding 0.8kg of initiator, 20kg of methyl methacrylate, 20kg of butyl acrylate and 1.6kg of methacrylate, and obtaining seed emulsion after the reaction;
s3, adding 2kg of initiator and seed emulsion into the pre-emulsion, heating to 92 ℃ for copolymerization, and obtaining the acrylic ester emulsion after the reaction is completed.
The emulsifier consists of a reactive emulsifier and an anionic emulsifier according to the weight ratio of 1:0.2, wherein the reactive emulsifier adopts a formula (I-1), and the chemical structural formula is shown in figure 1; the anionic emulsifier is sodium dodecyl sulfate.
The difference from preparation example 1 is that the starting components do not contain vinyltriethoxysilane.
Comparative preparation example 2
An acrylic ester emulsion is prepared by the following steps:
s1, mixing 4.8kg of an emulsifying agent, 5kg of vinyl triethoxysilane and 60kg of water, heating to 45 ℃, stirring for 20min at 600r/min, simultaneously adding 80kg of methyl methacrylate, 80kg of butyl acrylate and 6.4kg of methacrylate, and continuously stirring for 30min to obtain a stable pre-emulsion;
s2, mixing 1.2kg of emulsifying agent with 20kg of water, heating to 45 ℃, stirring for 10min at 600r/min, sequentially adding 0.8kg of initiator, 20kg of methyl methacrylate, 20kg of butyl acrylate and 1.6kg of methacrylate, and obtaining seed emulsion after the reaction;
s3, adding 2kg of initiator and seed emulsion into the pre-emulsion, heating to 92 ℃ for copolymerization, and obtaining the acrylic ester emulsion after the reaction is completed.
The emulsifier consists of a reactive emulsifier and an anionic emulsifier according to the weight ratio of 1:0.2, wherein the reactive emulsifier adopts a formula (I-1), and the chemical structural formula is shown in figure 1; the anionic emulsifier is sodium dodecyl sulfate.
The difference from preparation example 1 is that the starting components do not contain phosphoric acid acrylic acid esters.
Comparative preparation example 3
An acrylic ester emulsion is prepared by the following steps:
6kg of an emulsifier, 5kg of vinyltriethoxysilane, 8kg of phosphoric acid acrylic ester and 80kg of water are mixed, heated to 45 ℃ and stirred for 15min at 800r/min, 1kg of an initiator, 100kg of methyl methacrylate, 100kg of butyl acrylate and 8kg of methacrylic ester are added, stirring and reaction are continued for 45min, heating to 921 ℃ and reacting for 5h, and acrylic ester emulsion is obtained.
Comparative preparation example 4
An acrylic emulsion differs from preparation 1 in that the emulsifier is a reactive emulsifier, specifically formula (I-1), and the chemical structural formula is shown in figure 1.
Comparative preparation example 5
An acrylic emulsion differs from preparation 1 in that an anionic emulsifier, in particular sodium lauryl sulfate, is used as the emulsifier.
Comparative preparation example 6
An acrylic ester emulsion is different from the preparation example 1 in that the emulsifier consists of a nonionic emulsifier and an anionic emulsifier according to the weight ratio of 1:0.5, and the nonionic emulsifier adopts op-10; the anionic emulsifier is sodium dodecyl sulfate.
Performance detection
The stability test was carried out on the acrylic emulsion prepared in preparation examples 1 to 11 and comparative preparation examples 1 to 3, and the specific test method is as follows: ion stability: preparing 10% CaCl by mass 2 Solution, caCl 2 Mixing the solution and the acrylic ester emulsion in a ratio of 1:5, shaking uniformly, standing for 24 hours and 48 hours, and observing whether layering and demulsification of the emulsion occur.
Freeze thawing stability: freezing the acrylic ester emulsion at-10 ℃ for 16h, and melting at room temperature for 8h to complete one freeze thawing cycle, wherein the cycle is 5 times and 8 times.
The test results are shown in Table 1 below.
TABLE 1 stability and Water absorption test results of acrylate emulsion
From the test results, the acrylate emulsion prepared in the examples 1 to 11 of the application passes the ion stability test for 48 hours and the freeze thawing stability test for 8 cycles, which indicates that the acrylate emulsion prepared in the application has better stability.
As can be seen from comparing the test results of preparation example 1 and comparative preparation example 1, the preparation process of the acrylic ester emulsion has a larger influence on the stability, and the acrylic ester emulsion has poor stability and is easy to generate layering and demulsification under the condition that no other measures are adopted by adopting a conventional copolymerization mode.
As can be seen from comparing the test results of preparation example 1 and comparative preparation examples 4, 5 and 6, the selection of the emulsifier also has a large influence on the stability of the acrylate emulsion, and when a single emulsifier component is used, the stability of the acrylate emulsion cannot pass the test; while comparative preparation 6, although employing a combination of nonionic and anionic emulsifiers, the resulting acrylate emulsion was able to pass only 24h of the ionic stability test and 5 cycles of freeze-thaw stability test.
Examples
Example 1
The water-based anticorrosive paint for the ships is prepared by the following steps:
mixing 0.5kg of defoamer, 0.3kg of anti-settling agent, 1kg of dispersing agent, 20kg of pigment and filler, 30kg of mica powder and 10kg of water, uniformly stirring at 1000r/min, adding 100kg of acrylate emulsion, 5kg of film forming additive and 0.3kg of thickener, continuously stirring uniformly, and discharging to obtain the ship water-based anti-corrosion paint.
In this example, the acrylic emulsion prepared in preparation example 1 was used as the acrylic emulsion.
Example 2
The water-based anticorrosive paint for the ships is prepared by the following steps:
mixing 0.75kg of defoamer, 0.4kg of anti-settling agent, 1.25kg of dispersing agent, 22.5kg of pigment and filler, 35kg of mica powder and 15kg of water, uniformly stirring at 1000r/min, adding 110kg of acrylate emulsion, 6kg of film forming additive and 0.4kg of thickener, continuously stirring uniformly, and discharging to obtain the ship water-based anti-corrosive paint.
In this example, the acrylic emulsion prepared in preparation example 1 was used as the acrylic emulsion.
Example 3
The water-based anticorrosive paint for the ships is prepared by the following steps:
mixing 1kg of defoamer, 0.5kg of anti-settling agent, 1.5kg of dispersing agent, 25kg of pigment and filler, 40kg of mica powder and 20kg of water, uniformly stirring at 1000r/min, adding 120kg of acrylate emulsion, 7kg of film forming auxiliary agent and 0.5kg of thickener, continuously stirring uniformly, and discharging to obtain the ship water-based anti-corrosion paint.
In this example, the acrylic emulsion prepared in preparation example 1 was used as the acrylic emulsion.
Example 4
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic emulsion in the example is the acrylic emulsion prepared in the preparation example 2.
Example 5
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic ester emulsion in the example is the acrylic ester emulsion prepared in the preparation example 3.
Example 6
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic emulsion in the example is the acrylic emulsion prepared in the preparation example 4.
Example 7
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic ester emulsion in the example is the acrylic ester emulsion prepared in the preparation example 5.
Example 8
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic ester emulsion in the example is the acrylic ester emulsion prepared in the preparation example 6.
Example 9
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic ester emulsion in the example is the acrylic ester emulsion prepared in the preparation example 6.
Example 10
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic ester emulsion in the example is the acrylic ester emulsion prepared in the preparation example 7.
Example 11
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic emulsion in the example is the acrylic emulsion prepared in the preparation example 8.
Example 12
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic emulsion in the example is the acrylic emulsion prepared in the preparation example 9.
Example 13
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic emulsion in the example is the acrylic emulsion prepared in the preparation example 10.
Example 14
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption is that the acrylic ester emulsion in the example is the acrylic ester emulsion prepared in the preparation example 11.
Comparative example
Comparative example 1
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption and the raw material consumption of the acrylic acid ester emulsion in the comparative example is that the acrylic acid ester emulsion prepared in the comparative preparation example 1 is adopted.
Comparative example 2
The raw material consumption of the ship water-based anticorrosive paint is the same as that of the example 1, and the difference of the raw material consumption and the example 1 is that the acrylic emulsion in the comparative example adopts the acrylic emulsion prepared in the comparative preparation example 2.
Comparative example 3
The raw material amount of the ship water-based anticorrosive paint is the same as that of example 1, and the difference of the raw material amount is that the acrylic emulsion in the comparative example is the acrylic emulsion prepared in comparative preparation example 3.
Comparative example 4
The raw material amount of the ship water-based anticorrosive paint is the same as that of example 1, and the difference of the raw material amount is that the acrylic emulsion prepared in comparative example 4 is adopted as the acrylic emulsion in the comparative example 1.
Comparative example 5
The raw material amount of the ship water-based anticorrosive paint is the same as that of example 1, and the difference of the raw material amount is that the acrylic emulsion prepared in comparative example 5 is adopted as the acrylic emulsion in the comparative example 1.
Comparative example 6
The raw material amount of the ship water-based anticorrosive paint is the same as that of example 1, and the difference of the raw material amount is that the acrylic emulsion prepared in comparative example 6 is adopted as the acrylic emulsion in the comparative example 1.
Performance testing
The performance parameters of the ship water-based anticorrosive paint prepared in each of the above examples and comparative examples are shown in table 2 below.
TABLE 2 Performance test results
From the test results, the ship water-based anti-corrosion paint prepared by the application has excellent adhesive force, hardness and anti-corrosion water resistance.
As can be seen by comparing the test results of example 1 and comparative examples 1 and 2, the salt spray resistance and the water resistance of comparative example 1 are obviously reduced compared with those of example 1, and the reduction of the salt spray resistance and the water resistance is caused by the low crosslinking density, the reduced paint film compactness and the reduced corrosion resistance and the reduced water resistance due to the fact that the main chain of the acrylic polymer lacks hydrolytic condensation siloxane because of the absence of vinyl triethoxysilane in comparative example 1. In contrast, the properties of comparative example 2, in particular adhesion and hardness, were reduced compared to example 1, since comparative example 2 does not contain phosphate acrylate, the molecular chain of acrylate cannot form a strong chelate with the surface of the metal substrate, resulting in a significant reduction in adhesion.
As can be seen from comparing the test results of example 1 and comparative example 3, the acrylate emulsion used in comparative example 1 is prepared by a conventional emulsification preparation process, and the obtained anticorrosive paint has poor adhesive force and corrosion resistance performance. The method is characterized in that by adjusting the adding sequence of raw materials, the emulsifying agent is adopted to pre-emulsify most of raw material monomers and functional monomers, then the small part of raw material monomers and functional monomers are emulsified, and the two monomers are mixed for reaction, so that the finally obtained acrylic ester emulsion has the characteristics of high stability and high water resistance, and the correspondingly obtained acrylic ester emulsion has good stability and the prepared water-based anticorrosive paint has excellent performance.
As can be seen from comparing the test results of example 1 and comparative examples 4 to 6, the performance of the obtained anticorrosive paint is inferior to that of the emulsifier compounding mode of the application by adopting a single emulsifier or a non-ionic emulsifier and anionic emulsifier compounding mode which is common in the market. The application adopts the reactive emulsifier and the anionic emulsifier to compound, not only the acrylic ester emulsion with high stability is obtained, but also the obtained water-based anti-corrosion paint has great improvement in the aspects of adhesive force, hardness, anti-corrosion property and water resistance.
The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application. It should be noted that modifications and adaptations to the present application may occur to one skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (8)
1. The ship water-based anti-corrosion paint is characterized by comprising the following components in parts by weight: 100-120 parts of acrylic ester emulsion, 0.5-1 part of defoamer, 5-7 parts of film forming auxiliary agent, 0.3-0.5 part of anti-settling agent, 0.3-0.5 part of thickener, 1-1.5 parts of dispersing agent, 20-25 parts of pigment and filler, 30-40 parts of mica powder and 10-20 parts of water;
the acrylic ester emulsion is prepared from the following raw materials: methyl methacrylate, mixed monomer composed of butyl acrylate and methacrylate, functional monomer composed of vinyl triethoxysilane and phosphoric acid acrylic ester, emulsifier, initiator and water.
2. The marine water-based anticorrosive paint according to claim 1, wherein the acrylate emulsion is prepared by the steps of:
mixing 80-90% of emulsifying agent and functional monomer with water, heating and stirring, and simultaneously adding 80-90% of mixed monomer to obtain stable pre-emulsion;
mixing 10-20% of emulsifying agent with water, heating and stirring, sequentially adding 80-90% of initiator and 10-20% of mixed monomer, and obtaining seed emulsion after the reaction;
adding 10-20% of initiator and seed emulsion into the pre-emulsion, and heating for reaction to obtain the acrylic ester emulsion.
3. The ship water-based anti-corrosive paint according to claim 2, wherein the acrylate emulsion comprises the following raw materials in parts by weight: 100-120 parts of methyl methacrylate, 100-120 parts of butyl acrylate, 8-10 parts of methacrylate, 5-8 parts of vinyl triethoxysilane, 8-10 parts of phosphoric acid acrylic ester, 6-8 parts of emulsifying agent, 1-3 parts of initiator and 80-100 parts of water.
4. The marine water-based anticorrosive paint according to claim 2, wherein the emulsifier is composed of a reactive emulsifier and an anionic emulsifier, and the weight ratio of the reactive emulsifier to the anionic emulsifier is 1 (0.2-0.5);
the structural general formula of the reactive emulsifier is as follows:
wherein n=10-40.
5. The marine water-based anticorrosive paint according to claim 4, wherein n in the general formula (i) is 10, 20, 30 or 40.
6. The marine water-based anticorrosive paint according to claim 2, wherein the anionic emulsifier is selected from one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dibutyl ester sulfosuccinate.
7. The marine water-based anticorrosive paint according to claim 1, wherein the dispersant is one selected from the group consisting of sodium tripolyphosphate, sodium tetrapolyphosphate, and sodium hexametaphosphate.
8. The method for preparing the ship water-based anti-corrosive paint as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:
and uniformly mixing the defoaming agent, the anti-settling agent, the dispersing agent, the pigment and filler, the mica powder and the water, adding the rest acrylic ester emulsion, the film forming auxiliary agent and the thickening agent, uniformly mixing, and discharging to obtain the ship water-based anti-corrosion paint.
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