CN114381184A - Bi-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance and preparation method thereof - Google Patents
Bi-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance and preparation method thereof Download PDFInfo
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- CN114381184A CN114381184A CN202111593193.2A CN202111593193A CN114381184A CN 114381184 A CN114381184 A CN 114381184A CN 202111593193 A CN202111593193 A CN 202111593193A CN 114381184 A CN114381184 A CN 114381184A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 239000010439 graphite Substances 0.000 title claims abstract description 53
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 53
- 239000004593 Epoxy Substances 0.000 title claims abstract description 48
- 239000003973 paint Substances 0.000 title claims abstract description 48
- 230000003068 static effect Effects 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 63
- 239000000049 pigment Substances 0.000 claims abstract description 56
- 239000006185 dispersion Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002270 dispersing agent Substances 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 239000000080 wetting agent Substances 0.000 claims abstract description 25
- 239000008367 deionised water Substances 0.000 claims abstract description 24
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 24
- 239000002562 thickening agent Substances 0.000 claims abstract description 24
- 238000009736 wetting Methods 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 150000003839 salts Chemical class 0.000 claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 21
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims abstract description 18
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 18
- 238000004040 coloring Methods 0.000 claims abstract description 16
- 239000004606 Fillers/Extenders Substances 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 47
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 25
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 24
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 239000004744 fabric Substances 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 20
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 17
- CUVLMZNMSPJDON-UHFFFAOYSA-N 1-(1-butoxypropan-2-yloxy)propan-2-ol Chemical compound CCCCOCC(C)OCC(C)O CUVLMZNMSPJDON-UHFFFAOYSA-N 0.000 claims description 16
- 239000003112 inhibitor Substances 0.000 claims description 16
- 229920000768 polyamine Polymers 0.000 claims description 15
- 239000012752 auxiliary agent Substances 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 229960000892 attapulgite Drugs 0.000 claims description 10
- 239000004841 bisphenol A epoxy resin Substances 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 10
- 229910021485 fumed silica Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 239000010445 mica Substances 0.000 claims description 10
- 229910052618 mica group Inorganic materials 0.000 claims description 10
- 229910052625 palygorskite Inorganic materials 0.000 claims description 10
- 229920000570 polyether Polymers 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- VAWSWDPVUFTPQO-UHFFFAOYSA-N calcium strontium Chemical compound [Ca].[Sr] VAWSWDPVUFTPQO-UHFFFAOYSA-N 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 7
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010433 feldspar Substances 0.000 claims description 7
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 7
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 7
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 7
- NVKTUNLPFJHLCG-UHFFFAOYSA-N strontium chromate Chemical compound [Sr+2].[O-][Cr]([O-])(=O)=O NVKTUNLPFJHLCG-UHFFFAOYSA-N 0.000 claims description 7
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 claims description 7
- 229910000165 zinc phosphate Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 229920001400 block copolymer Polymers 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 5
- IPGANOYOHAODGA-UHFFFAOYSA-N dilithium;dimagnesium;dioxido(oxo)silane Chemical compound [Li+].[Li+].[Mg+2].[Mg+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O IPGANOYOHAODGA-UHFFFAOYSA-N 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- OHOBJYLZBONBBA-UHFFFAOYSA-N strontium zinc Chemical compound [Zn+2].[Sr+2] OHOBJYLZBONBBA-UHFFFAOYSA-N 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 150000003751 zinc Chemical class 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 2
- WTFXARWRTYJXII-UHFFFAOYSA-N iron(2+);iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+2].[Fe+3].[Fe+3] WTFXARWRTYJXII-UHFFFAOYSA-N 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 8
- 229910014314 BYK190 Inorganic materials 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000013530 defoamer Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000002161 passivation Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000011056 performance test Methods 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
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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 relates to an anticorrosive coating for petroleum pipelines, in particular to a bi-component flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance and a preparation method thereof. Dispersing and grinding deionized water, a wetting dispersant, a defoaming agent, an antirust pigment, a coloring pigment, an extender pigment and an anti-settling agent, sequentially adding an epoxy resin dispersion, flake graphite, a film-forming aid, a base material wetting agent, an antifreezing agent, a salt spray resistant aid and a thickening agent, stirring and filtering to obtain a component A; stirring and filtering the curing agent, the anti-flash rust agent and the deionized water to obtain a component B; and finally, mixing the component A and the component B to obtain the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance. The static conductive anticorrosive coating has good salt spray resistance and fire resistance.
Description
Technical Field
The invention relates to an anticorrosive coating for petroleum pipelines, in particular to a bi-component flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance and a preparation method thereof.
Background
The epoxy static conductive coating is widely used as an anticorrosive coating for eliminating static accumulation on the inner wall of a petroleum storage tank, has excellent anticorrosive performance and good resistance to acid and alkaline impurities in crude oil, and simultaneously requires surface resistance control according to GB/T50393-2017At 108～1011It has good effect on eliminating static accumulation in the storage tank. The epoxy static conductive coating is mainly divided into a solvent type and a solvent-free type. The VOC content of the solvent type epoxy static conductive coating is high. With the higher environmental protection requirement of national regulations, the VOC content requirement of the high-solid content coating in the GB/T35602-2017 green product evaluation coating is less than or equal to 250 g/L. The solvent type epoxy static conductive coating is difficult to meet the requirements of environmental protection regulations.
At present, conductive mica is generally used as a conductive medium in the static conductive anticorrosive paint adopted in the petrochemical industry. However, the static conductive anticorrosive paint prepared by adopting the conductive mica as a conductive medium has poor comprehensive performance and does not have fireproof performance.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a bi-component crystalline flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance and a preparation method thereof.
In order to solve the problems, the following technical scheme is provided:
the bi-component crystalline flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance is characterized by comprising a component A and a component B, wherein the mass ratio of the component A to the component B is (5-8): 1;
the component A comprises the following raw materials in parts by mass:
10-15 parts of deionized water;
0.8-1.5 parts of wetting dispersant;
0.1-0.3 part of defoaming agent;
5-10 parts of an antirust pigment;
5-10 parts of a coloring pigment;
10-15 parts of extender pigment;
0.5-1.0 part of anti-settling agent;
35-45 parts of epoxy resin dispersoid;
10-15 parts of flake graphite;
1-3 parts of a film-forming assistant;
0.2-0.5 part of base material wetting agent;
1.0-2.0 parts of an antifreezing agent;
0.5-1.0 part of salt spray resistant auxiliary agent;
0.5-1.0 part of thickening agent.
Wherein, the wetting dispersant is a macromolecular block copolymer containing pigment affinity groups and a solution thereof; the defoaming agent is polyether modified organic silicon solution or emulsion; the epoxy resin dispersoid is a nonionic aqueous dispersion of epoxy modified solid bisphenol A epoxy resin, and the nonionic aqueous dispersion is formed by mixing 50-55% of epoxy modified solid bisphenol A epoxy resin and 45-50% of water according to the mass ratio; the substrate wetting agent is polyether modified organic silicon copolymer and solution thereof; the thickening agent is a nonionic associative aqueous polyurethane solution.
The component B comprises the following raw materials in parts by mass:
50-60 parts of a curing agent;
0.5-1.0 part of flash rust inhibitor;
40-49 parts of deionized water.
Wherein the curing agent is a polyamine adduct-based modified nonionic aqueous dispersion liquid, and the polyamine adduct-based modified nonionic aqueous dispersion liquid is prepared by mixing 50-55% of polyamine adduct-based modified nonionic curing agent, 35-40% of water and 10-15% of emulsion in percentage by mass; the anti-flash rust agent is a phosphorus, amine or zinc derivative.
Wherein the antirust pigment is one or a mixture of zinc phosphate, aluminum tripolyphosphate, zinc phosphomolybdate, strontium chromate, strontium zinc phosphosilicate and strontium calcium phosphosilicate.
The coloring pigment is one or a mixture of more of iron oxide red, iron oxide black, iron oxide yellow, carbon black, titanium dioxide, scarlet powder, phthalocyanine blue, permanent yellow and phthalocyanine green.
The extender pigment is one or a mixture of barium sulfate, talcum powder, mica powder, silica micropowder, barite powder and feldspar powder.
The anti-settling agent is one or a mixture of more of fumed silica, hydrated lithium magnesium silicate, aqueous bentonite and aqueous attapulgite.
The particle size of the crystalline flake graphite is 80-200 meshes, and the carbon content is 95% -99%.
The film-forming aid is DPNB dipropylene glycol butyl ether.
The antifreezing agent is one or a mixture of two of ethylene glycol and propylene glycol.
The salt spray resistant auxiliary agent is a special polymer.
The method for preparing the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance is characterized by comprising the following steps in parts by mass:
1) preparing a component A:
first, grinding
Firstly, adjusting the rotating speed of a dispersion machine to 600-800 revolutions;
then, adding 10-15 parts of deionized water, 0.8-1.5 parts of wetting dispersant, 0.1-0.3 part of defoaming agent, 5-10 parts of antirust pigment, 5-10 parts of coloring pigment, 10-15 parts of extender pigment and 0.5-1.0 part of anti-settling agent into a dispersion machine in sequence, and dispersing for 30-50 minutes to obtain a semi-finished product;
then, a horizontal grinder is adopted to grind the fineness of the semi-finished product to be below 30um at the temperature of below 50 ℃;
second, paint mixing
Firstly, after the ground semi-finished slurry is put into a stirrer, the rotating speed of the stirrer is adjusted to 600-800 revolutions;
then, adding 35-45 parts of epoxy resin dispersoid, 10-15 parts of crystalline flake graphite, 1-3 parts of film-forming additive, 0.2-0.5 part of base material wetting agent, 1.0-2.0 parts of anti-freezing agent and 0.5-1.0 part of salt spray resistant additive into the stirrer in sequence, and stirring for 30-50 minutes;
then, 0.5 to 1.0 part of thickening agent is added into the stirrer, and the viscosity of the slurry is adjusted to 90 to 100 ku;
finally, filtering with 50-100 meshes of filter cloth, and passing through the slurry of the filter cloth to obtain a component A;
2) b, preparation of a component B:
firstly, the rotating speed of the dispersion machine is adjusted to 600 and 800 revolutions;
then, 50-60 parts of curing agent, 0.5-1.0 part of flash rust inhibitor and 40-49 parts of deionized water are sequentially added into a dispersion machine, and the mixture is stirred for 30-50 minutes to obtain slurry
Finally, filtering with 50-100 meshes of filter cloth, wherein the slurry passing through the filter cloth is the component B;
3) mixing
The component A and the component B are mixed according to the mass ratio of (5-8) to 1 to obtain the bi-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance.
By adopting the scheme, the method has the following advantages:
according to the invention, deionized water, a wetting dispersant, a defoaming agent, an antirust pigment, a coloring pigment, an extender pigment and an anti-settling agent are dispersed and ground, and then an epoxy resin dispersion, flake graphite, a film forming aid, a base material wetting agent, an antifreezing agent, a salt spray resistant aid and a thickening agent are sequentially added, stirred and filtered to obtain a component A; stirring and filtering the curing agent, the anti-flash rust agent and the deionized water to obtain a component B; and finally, mixing the component A and the component B to obtain the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance. The bi-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance adopts graphite flakes to replace the traditional conductive mica, and adopts the combination of epoxy resin dispersoid to prepare the epoxy static conductive paint with performance far superior to the traditional static conductive paint. Meanwhile, the flake graphite is not combustible, and under the high-temperature condition, the flake graphite can expand in volume to generate an expanded substance so as to delay or interrupt flame propagation, so that the static conductive anticorrosive coating has the function of a fireproof coating.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example one
The bi-component crystalline flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 5: 1.
The component A comprises the following raw materials in parts by mass: 10 parts of deionized water; 0.8 part of wetting dispersant; 0.1 part of defoaming agent; 5 parts of an antirust pigment; 5 parts of a coloring pigment; 10 parts of extender pigment; 0.5 part of anti-settling agent; 35 parts of epoxy resin dispersion; 10 parts of flake graphite; 1 part of a film-forming assistant; 0.2 part of base material wetting agent; 1.0 part of an antifreezing agent; 0.5 part of salt spray resistant auxiliary agent; 0.5 part of thickening agent.
The wetting dispersant is a high-molecular block copolymer containing pigment affinity groups and a solution thereof. It can be one or a mixture of several different dispersants, such as BYK190, Tego757, Tego760, EDAPAN 490, YCK-2180. In this example the wetting dispersant is BYK 190.
The defoaming agent is polyether modified organic silicon solution or emulsion. It can be one or a mixture of several different defoamers, such as BYK024, BYK028, Tego902W, Tego904W, Tego822, AGITAN 156, YCK-770. In this example, BYK024 is used as defoaming agent.
The antirust pigment is one or a mixture of zinc phosphate, aluminum tripolyphosphate, zinc phosphomolybdate, strontium chromate, strontium zinc phosphosilicate and strontium calcium phosphosilicate. In this example, the rust preventive pigment was zinc phosphate.
The coloring pigment is one or a mixture of more of iron oxide red, iron oxide black, iron oxide yellow, carbon black, titanium dioxide, scarlet powder, phthalocyanine blue, permanent yellow and phthalocyanine green. In this example, the coloring pigment was iron oxide red.
The extender pigment is one or a mixture of barium sulfate, talcum powder, mica powder, silica micropowder, barite powder and feldspar powder. The bulk pigment in this example was barium sulfate.
The anti-settling agent is one or a mixture of more of fumed silica, hydrated lithium magnesium silicate, aqueous bentonite and aqueous attapulgite. Such as the winning creation A200 fumed silica, RD, RDS of byk, Hamins LT, 4000, Pasteur attapulgite and the like. The anti-settling agent in the present embodiment is Yingchuang A200 fumed silica.
The epoxy resin dispersoid is a nonionic aqueous dispersion liquid of epoxy modified solid bisphenol A epoxy resin, and the nonionic aqueous dispersion liquid is formed by mixing 50% of epoxy modified solid bisphenol A epoxy resin and 50% of water according to the mass ratio.
The particle size of the crystalline flake graphite is 80 meshes, and the carbon content is 95%.
The film-forming assistant is DPNB dipropylene glycol butyl ether and is used for improving the strength of a paint film.
The substrate wetting agent is polyether modified organic silicon copolymer and solution thereof. It may be one or a mixture of different substrate wetting agents such as byk345, byk349, Tego245L, Tego270, EDAPLAN LA 413, EDAPLAN LA 411, YCK-1110, and the like. The substrate wetting agent in this embodiment is, for example, byk 345.
The antifreezing agent is one or a mixture of two of ethylene glycol and propylene glycol. The antifreeze in this embodiment is ethylene glycol.
The thickening agent is a nonionic associative aqueous polyurethane solution. It may be a mixture of one or more thickening agents, such as Ming Ling PUR40, PUR64, Haimines 299, Gaotai 830W, borchers 0620/0434, Rohm-8W, RM2020, and the like. The thickener in this example was gelatin PUR 40.
The salt spray resistant additive is a special polymer, such as 330 of the Longhai chemical industry, and has the function of forming a passivation layer on the surface of metal to realize a chemical rust prevention function. In this embodiment, the salt spray resistant additive is 330 of the chemical industry of Longhai.
The component B comprises the following raw materials in parts by mass: 50 parts of a curing agent; 0.5 part of flash rust inhibitor; 40 parts of deionized water.
Wherein. The curing agent is a polyamine adduct modified nonionic aqueous dispersion, and the polyamine adduct modified nonionic aqueous dispersion is formed by mixing 50% of polyamine adduct modified nonionic curing agent, 35% of water and 15% of emulsion according to the mass ratio.
The anti-flash rust agent is a phosphorus, amine or zinc derivative. It may be one or more of FA179, FA379, Raybo60, Halox150, Halox330, Halox370, SN-1X 7465, etc. The flash rust inhibitor has the function of quickly passivating substrates such as water-based paint steel and the like, so that the water-based paint is prevented from being quickly rusted in the drying process. The flash rust inhibitor in this example was FA 179.
The method for preparing the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance comprises the following steps in parts by mass:
1) preparing a component A:
first, grinding
Firstly, regulating the rotating speed of a dispersion machine to 600 revolutions;
then, 10 parts of deionized water, 0.8 part of BYK190 wetting dispersant, 0.1 part of BYK024 defoaming agent, 5 parts of zinc phosphate, 5 parts of iron oxide red, 10 parts of barium sulfate and 0.5 part of Yingchuang A200 fumed silica are sequentially added into a dispersion machine, and a semi-finished product is obtained after dispersion for 30 minutes.
Then, a horizontal grinder is adopted to grind the fineness of the semi-finished product to 30um at 50 ℃;
second, paint mixing
Firstly, after the ground semi-finished slurry is put into a stirrer, the rotating speed of the stirrer is adjusted to 600 revolutions.
Then, 35 parts of epoxy resin dispersion, 10 parts of crystalline flake graphite, 1 part of DPNB dipropylene glycol butyl ether, 0.2 part of byk345 base material wetting agent, 1.0 part of ethylene glycol and 0.5 part of salt spray resistant auxiliary agent were added to the mixer in this order, and the mixture was stirred for 30 minutes.
Then, 0.5 part of a thickener of Ming-Ling PUR40 was added to the mixer to adjust the viscosity of the slurry to 90 ku.
Finally, the mixture is filtered by a filter cloth with 50 meshes, and the slurry passing through the filter cloth is the component A.
2) B, preparation of a component B:
first, the rotation speed of the dispersion machine was adjusted to 600 revolutions.
Then, 50 parts of a curing agent, 0.5 part of FA179 flash rust preventive and 40 parts of deionized water were sequentially added to the dispersion machine, and stirred for 30 minutes to obtain a slurry.
And finally, filtering by using a filter cloth with 50 meshes, wherein the slurry passing through the filter cloth is the component B.
3) Mixing
Mixing the component A and the component B according to the mass ratio of 5:1 to obtain the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance
Example two
The bi-component crystalline flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance comprises a component A and a component B, wherein the mass part ratio of the component A to the component B is 8: 1.
The component A comprises the following raw materials in parts by mass: 15 parts of deionized water; 1.5 parts of wetting dispersant; 0.3 part of defoaming agent; 10 parts of an antirust pigment; 10 parts of a coloring pigment; 15 parts of extender pigment; 1.0 part of anti-settling agent; 45 parts of epoxy resin dispersion; 15 parts of flake graphite; 3 parts of a film-forming assistant; 0.5 part of base material wetting agent; 2.0 parts of an antifreezing agent; 1.0 part of salt spray resistant auxiliary agent; 1.0 part of thickening agent.
The wetting dispersant is a high-molecular block copolymer containing pigment affinity groups and a solution thereof. It can be one or a mixture of several different dispersants, such as BYK190, Tego757, Tego760, EDAPAN 490, YCK-2180. The wetting dispersant in this example was a mixture of Tego757, Tego760 and EDAPLAN 490.
The defoaming agent is polyether modified organic silicon solution or emulsion. It can be one or a mixture of several different defoamers, such as BYK024, BYK028, Tego902W, Tego904W, Tego822, AGITAN 156, YCK-770. In the examples the antifoam agent was a mixture of BYK028, Tego902W and Tego 904W.
The antirust pigment is one or a mixture of zinc phosphate, aluminum tripolyphosphate, zinc phosphomolybdate, strontium chromate, strontium zinc phosphosilicate and strontium calcium phosphosilicate. The rust inhibitive pigment in this example was a mixture of aluminum tripolyphosphate, zinc phosphomolybdate and strontium chromate.
The coloring pigment is one or a mixture of more of iron oxide red, iron oxide black, iron oxide yellow, carbon black, titanium dioxide, scarlet powder, phthalocyanine blue, permanent yellow and phthalocyanine green. The coloring pigment in this example was a mixture of black iron oxide, yellow iron oxide and carbon black.
The extender pigment is one or a mixture of barium sulfate, talcum powder, mica powder, silica micropowder, barite powder and feldspar powder. In the embodiment, the bulk pigment is a mixture of talcum powder, mica powder and silicon micropowder.
The anti-settling agent is one or a mixture of more of fumed silica, hydrated lithium magnesium silicate, aqueous bentonite and aqueous attapulgite. Such as the winning creation A200 fumed silica, RD, RDS of byk, Hamins LT, 4000, Pasteur attapulgite and the like. The anti-settling agent in this embodiment is a mixture of RD and RDS of byk.
The epoxy resin dispersoid is a nonionic aqueous dispersion liquid of epoxy modified solid bisphenol A epoxy resin, and the nonionic aqueous dispersion liquid is formed by mixing 55% of epoxy modified solid bisphenol A epoxy resin and 45% of water according to the mass ratio.
The particle size of the crystalline flake graphite is 200 meshes, and the carbon content is 99%.
The film-forming assistant is DPNB dipropylene glycol butyl ether and is used for improving the strength of a paint film.
The substrate wetting agent is polyether modified organic silicon copolymer and solution thereof. It may be one or a mixture of different substrate wetting agents such as byk345, byk349, Tego245L, Tego270, EDAPLAN LA 413, EDAPLAN LA 411, YCK-1110, and the like. The substrate wetting agent in this example is a mixture of byk349, Tego245L, and Tego 270.
The antifreezing agent is a mixture of ethylene glycol and propylene glycol.
The thickening agent is a nonionic associative aqueous polyurethane solution. It may be a mixture of one or more thickening agents, such as Ming Ling PUR40, PUR64, Haimines 299, Gaotai 830W, borchers 0620/0434, Rohm-8W, RM2020, and the like. The thickener in this example is a mixture of Haimines 299 and Gaotai 830W.
The salt spray resistant auxiliary agent is a special polymer, which is 330 of Longhai chemical industry, and has the function of forming a passivation layer on the surface of metal to realize chemical rust prevention.
The component B comprises the following raw materials in parts by mass: 60 parts; 1.0 part of flash rust inhibitor; 49 parts of deionized water.
Wherein. The curing agent is a polyamine adduct modified nonionic aqueous dispersion, and the polyamine adduct modified nonionic aqueous dispersion is formed by mixing 50% of polyamine adduct modified nonionic curing agent, 40% of water and 10% of emulsion according to the mass ratio.
The anti-flash rust agent is a phosphorus, amine or zinc derivative. It may be one or more of FA179, FA379, Raybo60, Halox150, Halox330, Halox370, SN-1X 7465, etc. The flash rust inhibitor has the function of quickly passivating substrates such as water-based paint steel and the like, so that the water-based paint is prevented from being quickly rusted in the drying process. The flash rust inhibitor in this example is a mixture of FA379, Raybo60 and Halox 150.
The method for preparing the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance comprises the following steps in parts by mass:
1) preparing a component A:
first, grinding
Firstly, adjusting the rotating speed of a dispersion machine to 800 revolutions;
then, 15 parts of deionized water, 0.5 part of Tego757 wetting dispersant, 0.5 part of Tego760 wetting dispersant, 0.5 part of EDAPAN 490 wetting dispersant, 0.1 part of BYK028 defoamer, 0.1 part of Tego902W defoamer, Tego904W0.1 part of aluminum tripolyphosphate, 3 parts of zinc phosphomolybdate, 3 parts of strontium chromate, 4 parts of iron oxide black, 3 parts of iron oxide yellow, 3 parts of carbon black, 5 parts of talcum powder, 5 parts of mica powder, 5 parts of silicon micropowder, 0.5 part of RD anti-settling agent of BYK and 0.5 part of RDS anti-settling agent of BYK are sequentially added into a dispersing machine, and a semi-finished product is obtained after dispersing for 40 minutes;
then, a horizontal grinder is adopted to grind the fineness of the semi-finished product to be below 20um at 40 ℃;
second, paint mixing
Firstly, after the ground semi-finished slurry is put into a stirrer, the rotating speed of the stirrer is adjusted to 800 revolutions;
then, adding 45 parts of epoxy resin dispersoid, 15 parts of flake graphite, 3 parts of DPNB dipropylene glycol butyl ether, 0.2 part of byk349 substrate wetting agent, 0.2 part of Tego245L substrate wetting agent, 0.1 part of Tego270 substrate wetting agent, 1 part of ethylene glycol, 1 part of propylene glycol and 1.0 part of salt spray resistant auxiliary agent into a stirrer in sequence, and stirring for 50 minutes;
then, 0.5 part of Haimines 299 thickener and 0.5 part of Gaotai 830W thickener are added into the stirrer, and the viscosity of the slurry is adjusted to 100 ku;
finally, filtering with 100-mesh filter cloth, and passing through the slurry of the filter cloth to obtain a component A;
2) b, preparation of a component B:
firstly, adjusting the rotating speed of a dispersion machine to 800 revolutions;
then, 60 parts of curing agent, 0.3 part of FA379 flash rust inhibitor, 0.3 part of Raybo60 flash rust inhibitor, 0.4 part of Halox150 flash rust inhibitor and 49 parts of deionized water are added into the dispersion machine in sequence and stirred for 40 minutes to obtain slurry
And finally, filtering by using 100-mesh filter cloth, wherein the slurry passing through the filter cloth is the component B.
3) Mixing
And mixing the component A and the component B according to the mass ratio of 8:1 to obtain the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance.
EXAMPLE III
The bi-component crystalline flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance comprises a component A and a component B, wherein the mass part ratio of the component A to the component B is 7: 1.
The component A comprises the following raw materials in parts by mass: 12 parts of deionized water; 1.2 parts of wetting dispersant; 0.2 part of defoaming agent; 8 parts of an antirust pigment; 8 parts of a coloring pigment; 12 parts of extender pigment; 0.8 part of anti-settling agent; 40 parts of epoxy resin dispersion; 12 parts of flake graphite; 2 parts of a film-forming additive; 0.4 part of base material wetting agent; 1.5 parts of an antifreezing agent; 0.8 part of salt spray resistant auxiliary agent; 0.8 part of thickening agent.
The wetting dispersant is a high-molecular block copolymer containing pigment affinity groups and a solution thereof. It can be one or a mixture of several different dispersants, such as BYK190, Tego757, Tego760, EDAPAN 490, YCK-2180. The wetting dispersant in this example is YCK-2180.
The defoaming agent is polyether modified organic silicon solution or emulsion. It can be one or a mixture of several different defoamers, such as BYK024, BYK028, Tego902W, Tego904W, Tego822, AGITAN 156, YCK-770. In this example, the antifoaming agent is YCK-770.
The antirust pigment is one or a mixture of zinc phosphate, aluminum tripolyphosphate, zinc phosphomolybdate, strontium chromate, strontium zinc phosphosilicate and strontium calcium phosphosilicate. In this embodiment, the rust-preventive pigment is strontium calcium phosphosilicate.
The coloring pigment is one or a mixture of more of iron oxide red, iron oxide black, iron oxide yellow, carbon black, titanium dioxide, scarlet powder, phthalocyanine blue, permanent yellow and phthalocyanine green. The colored pigment in this example was phthalocyanine green.
The extender pigment is one or a mixture of barium sulfate, talcum powder, mica powder, silica micropowder, barite powder and feldspar powder. The bulk pigment in this example is feldspar powder.
The anti-settling agent is one or a mixture of more of fumed silica, hydrated lithium magnesium silicate, aqueous bentonite and aqueous attapulgite. Such as the winning creation A200 fumed silica, RD, RDS of byk, Hamins LT, 4000, Pasteur attapulgite and the like. The anti-settling agent in this example was basf attapulgite.
The epoxy resin dispersoid is a nonionic aqueous dispersion liquid of epoxy modified solid bisphenol A epoxy resin, and the nonionic aqueous dispersion liquid is formed by mixing 52% of epoxy modified solid bisphenol A epoxy resin and 47% of water according to the mass ratio.
The particle size of the crystalline flake graphite is 130 meshes, and the carbon content is 97%.
The film-forming assistant is DPNB dipropylene glycol butyl ether and is used for improving the strength of a paint film.
The substrate wetting agent is polyether modified organic silicon copolymer and solution thereof. It may be one or a mixture of different substrate wetting agents such as byk345, byk349, Tego245L, Tego270, EDAPLAN LA 413, EDAPLAN LA 411, YCK-1110, and the like. The wetting agent for the substrate in this embodiment is YCK-1110.
The antifreezing agent is one or a mixture of two of ethylene glycol and propylene glycol. The antifreeze in this embodiment is propylene glycol.
The thickening agent is a nonionic associative aqueous polyurethane solution. It may be a mixture of one or more thickening agents, such as Ming Ling PUR40, PUR64, Haimines 299, Gaotai 830W, borchers 0620/0434, Rohm-8W, RM2020, and the like. The thickener in this example is RM 2020.
The salt spray resistant auxiliary agent is a special polymer which is 330 of the Longhai chemical industry. The salt spray resistant assistant has the function of forming a passivation layer on the surface of metal to realize chemical rust prevention.
The component B comprises the following raw materials in parts by mass: 55 parts of a curing agent; 0.8 part of flash rust inhibitor; 45 parts of deionized water.
Wherein. The curing agent is a polyamine adduct modified nonionic aqueous dispersion, and the polyamine adduct modified nonionic aqueous dispersion is formed by mixing 55% of polyamine adduct modified nonionic curing agent, 35% of water and 15% of emulsion according to the mass ratio.
The anti-flash rust agent is a phosphorus, amine or zinc derivative. It may be one or more of FA179, FA379, Raybo60, Halox150, Halox330, Halox370, SN-1X 7465, etc. The flash rust inhibitor has the function of quickly passivating substrates such as water-based paint steel and the like, so that the water-based paint is prevented from being quickly rusted in the drying process. In this example, the flash rust inhibitor is SN-1X 7465.
The method for preparing the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance comprises the following steps in parts by mass:
1) preparing a component A:
first, grinding
Firstly, regulating the rotating speed of a dispersion machine to 700 revolutions;
then, adding 12 parts of deionized water, 1.2 parts of YCK-2180 wetting dispersant, 0.2 part of YCK-770 defoamer, 8 parts of strontium calcium phosphosilicate, 8 parts of phthalocyanine green, 12 parts of feldspar powder and 0.8 part of Pasteur attapulgite into a dispersion machine in sequence, and dispersing for 50 minutes to obtain a semi-finished product;
then, a horizontal grinder is adopted to grind the fineness of the semi-finished product to 15um at 30 ℃;
second, paint mixing
Firstly, after the ground semi-finished slurry is put into a stirrer, the rotating speed of the stirrer is adjusted to 700 revolutions;
then, 40 parts of epoxy resin dispersoid, 12 parts of crystalline flake graphite, 2 parts of DPNB dipropylene glycol butyl ether, 0.4 part of YCK-1110 base material wetting agent, 1.5 parts of propylene glycol and 0.8 part of salt spray resistant auxiliary agent are sequentially added into a stirrer and stirred for 40 minutes;
then, adding 0.8 part of RM2020 thickening agent into the stirrer, and adjusting the viscosity of the slurry to 95 ku;
finally, filtering with 80-mesh filter cloth, and passing through the slurry of the filter cloth to obtain component A.
2) B, preparation of a component B:
firstly, regulating the rotating speed of a dispersion machine to 700 revolutions;
then, 55 parts of curing agent, 0.8 part of SN-1X 7465 anti-flash rust agent and 45 parts of deionized water are sequentially added into a dispersion machine, and the mixture is stirred for 50 minutes to obtain slurry
And finally, filtering by using 80-mesh filter cloth, wherein the slurry passing through the filter cloth is the component B.
Third, mixing
And mixing the component A and the component B according to the mass ratio of 7:1 to obtain the bi-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance.
The following table shows the performance tests of the two-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance and the commercially available products
As can be seen from the above table, the two-component flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance has more balanced various performances, and the various performances are close to those of an oil paint product. Compared with the water paint of the market, the salt spray resistance and the conductivity of the paint are greatly improved, and the paint can better meet the requirements of effective corrosion resistance of pipelines, oil storage tanks and the like. Compared with oil paint, the paint has the characteristics of safety, environmental protection, low smell, easy operation and cleaning and the like, can be widely applied to metal corrosion prevention, and has good market prospect.
Claims (10)
1. The two-component crystalline flake graphite epoxy static conductive anticorrosive coating with excellent comprehensive performance is characterized by comprising a component A and a component B, wherein the mass ratio of the component A to the component B is (5-8): 1;
the component A comprises the following raw materials in parts by mass:
10-15 parts of deionized water;
0.8-1.5 parts of wetting dispersant;
0.1-0.3 part of defoaming agent;
5-10 parts of an antirust pigment;
5-10 parts of a coloring pigment;
10-15 parts of extender pigment;
0.5-1.0 part of anti-settling agent;
35-45 parts of epoxy resin dispersoid;
10-15 parts of flake graphite;
1-3 parts of a film-forming assistant;
0.2-0.5 part of base material wetting agent;
1.0-2.0 parts of an antifreezing agent;
0.5-1.0 part of salt spray resistant auxiliary agent;
0.5-1.0 part of thickening agent;
wherein, the wetting dispersant is a macromolecular block copolymer containing pigment affinity groups and a solution thereof; the defoaming agent is polyether modified organic silicon solution or emulsion; the epoxy resin dispersoid is a nonionic aqueous dispersion of epoxy modified solid bisphenol A epoxy resin, and the nonionic aqueous dispersion is formed by mixing 50-55% of epoxy modified solid bisphenol A epoxy resin and 45-50% of water according to the mass ratio; the substrate wetting agent is polyether modified organic silicon copolymer and solution thereof; the thickening agent is a nonionic associative aqueous polyurethane solution;
the component B comprises the following raw materials in parts by mass:
50-60 parts of a curing agent;
0.5-1.0 part of flash rust inhibitor;
40-49 parts of deionized water;
wherein the curing agent is a polyamine adduct-based modified nonionic aqueous dispersion liquid, and the polyamine adduct-based modified nonionic aqueous dispersion liquid is prepared by mixing 50-55% of polyamine adduct-based modified nonionic curing agent, 35-40% of water and 10-15% of emulsion in percentage by mass; the anti-flash rust agent is a phosphorus, amine or zinc derivative.
2. The two-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, wherein the rust-proof pigment is one or more of zinc phosphate, aluminum tripolyphosphate, zinc phosphomolybdate, strontium chromate, strontium zinc phosphosilicate and strontium calcium phosphosilicate.
3. The two-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, wherein the coloring pigment is one or more of red iron oxide, black iron oxide, yellow iron oxide, carbon black, titanium dioxide, scarlet powder, phthalocyanine blue, permanent yellow and phthalocyanine green.
4. The two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, characterized in that the extender pigment is one or more of barium sulfate, talcum powder, mica powder, silica powder, barite powder and feldspar powder.
5. The two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, characterized in that the anti-settling agent is one or more of fumed silica, hydrated lithium magnesium silicate, aqueous bentonite and aqueous attapulgite.
6. The two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, characterized in that the crystalline flake graphite has a particle size of 80-200 meshes and a carbon content of 95% -99%.
7. The two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, characterized in that the film forming aid is DPNB dipropylene glycol butyl ether.
8. The two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, characterized in that the antifreezing agent is one or a mixture of two of ethylene glycol and propylene glycol.
9. The two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in claim 1, characterized in that the salt spray resistant auxiliary agent is a special polymer.
10. The method for preparing the two-component crystalline flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance as claimed in any one of the preceding claims, which is characterized by comprising the following steps in parts by mass:
1) preparing a component A:
first, grinding
Firstly, adjusting the rotating speed of a dispersion machine to 600-800 revolutions;
then, adding 10-15 parts of deionized water, 0.8-1.5 parts of wetting dispersant, 0.1-0.3 part of defoaming agent, 5-10 parts of antirust pigment, 5-10 parts of coloring pigment, 10-15 parts of extender pigment and 0.5-1.0 part of anti-settling agent into a dispersion machine in sequence, and dispersing for 30-50 minutes to obtain a semi-finished product;
then, a horizontal grinder is adopted to grind the fineness of the semi-finished product to be below 30um at the temperature of below 50 ℃;
second, paint mixing
Firstly, after the ground semi-finished slurry is put into a stirrer, the rotating speed of the stirrer is adjusted to 600-800 revolutions;
then, adding 35-45 parts of epoxy resin dispersoid, 10-15 parts of crystalline flake graphite, 1-3 parts of film-forming additive, 0.2-0.5 part of base material wetting agent, 1.0-2.0 parts of anti-freezing agent and 0.5-1.0 part of salt spray resistant additive into the stirrer in sequence, and stirring for 30-50 minutes;
then, 0.5 to 1.0 part of thickening agent is added into the stirrer, and the viscosity of the slurry is adjusted to 90 to 100 ku;
finally, filtering with 50-100 meshes of filter cloth, and passing through the slurry of the filter cloth to obtain a component A;
2) b, preparation of a component B:
firstly, the rotating speed of the dispersion machine is adjusted to 600 and 800 revolutions;
then, 50-60 parts of curing agent, 0.5-1.0 part of flash rust inhibitor and 40-49 parts of deionized water are sequentially added into a dispersion machine, and the mixture is stirred for 30-50 minutes to obtain slurry
Finally, filtering with 50-100 meshes of filter cloth, wherein the slurry passing through the filter cloth is the component B;
3) mixing
The component A and the component B are mixed according to the mass ratio of (5-8) to 1 to obtain the bi-component flake graphite epoxy static conductive anticorrosive paint with excellent comprehensive performance.
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| CN116042009A (en) * | 2023-02-10 | 2023-05-02 | 深圳市深赛尔股份有限公司 | Antistatic agent, preparation method and application thereof |
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Application publication date: 20220422 |