CN114133834A - Ultra-fast-dry weldable precoated primer - Google Patents
Ultra-fast-dry weldable precoated primer Download PDFInfo
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- CN114133834A CN114133834A CN202210000957.0A CN202210000957A CN114133834A CN 114133834 A CN114133834 A CN 114133834A CN 202210000957 A CN202210000957 A CN 202210000957A CN 114133834 A CN114133834 A CN 114133834A
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- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000003822 epoxy resin Substances 0.000 claims abstract description 47
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 47
- 239000007787 solid Substances 0.000 claims abstract description 43
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 39
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 36
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 20
- -1 phenolic aldehyde amine Chemical class 0.000 claims abstract description 19
- 239000010445 mica Substances 0.000 claims abstract description 18
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 15
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 44
- 238000002156 mixing Methods 0.000 claims description 31
- 239000008096 xylene Substances 0.000 claims description 14
- 239000002904 solvent Substances 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- 229910021485 fumed silica Inorganic materials 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000002987 primer (paints) Substances 0.000 abstract description 50
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 12
- 239000003973 paint Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000002679 ablation Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 238000005488 sandblasting Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 235000010215 titanium dioxide Nutrition 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 229910052725 zinc Inorganic materials 0.000 description 10
- 239000011701 zinc Substances 0.000 description 10
- 238000005507 spraying Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 230000037452 priming Effects 0.000 description 4
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000004110 Zinc silicate Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000013615 primer Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 description 1
- 235000019352 zinc silicate Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
-
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
An ultra-fast drying weldable shop primer comprising a component A and a component B; the component A comprises the following raw materials: high molecular weight low solid content epoxy resin liquid, ethyl acetate, superfine ferrophosphorus powder, mica iron oxide ash, rutile type titanium dioxide and anti-settling slurry; the component B comprises the following raw materials: phenolic aldehyde amine curing agent, dimethylbenzene and n-butyl alcohol. Under the condition of not using zinc powder or other metal powder, the paint film has good conductivity, corrosion resistance and high-temperature ablation resistance, and simultaneously has excellent mechanical property and high drying speed, and can fully meet various requirements and requirements of various industries on the pre-coating primer at the present stage. The precoated primer can be cleaned by secondary sand blasting and can also be used as a part of a coating, the corrosion resistance of the precoated primer is obviously improved, and the precoated primer is completely suitable for the production process of an automatic precoated primer coating line; the preparation method has simple process, no need of sanding and lower production and manufacturing cost.
Description
Technical Field
The invention relates to a pre-coating primer, in particular to a weldable pre-coating primer.
Background
The pre-coating primer is an anti-rust primer for steel pretreatment, and the currently common shop pre-coating primers comprise single-component epoxy ester, inorganic zinc silicate primer, acrylic polyurethane primer, epoxy shop pre-coating primer and the like. In the past, due to the limitation of the application range and the field of the pre-coating primer, the research and improvement attention of a paint manufacturer on the pre-coating primer is not enough, so that the development of the pre-coating primer is slow; in recent years, the application space of the pre-coating primer is expanded due to the rapid development of the mechanical industry.
Current shop primers contain both zinc and no zinc. Generally, the zinc-containing primer for pre-coating is more excellent in corrosion resistance, but in the welding process of a workpiece pre-coated with the zinc-rich primer, the melting point of zinc is lower than that of a carbon steel plate, so that zinc evaporates to become toxic zinc vapor in the high-temperature process of a welding pool, and zinc poisoning of welding personnel can be caused. The zinc containing shop primer is gradually being replaced by a zinc free shop primer.
The pre-coating primer is mainly used for rust prevention in the processes of steel storage and transportation, the rust prevention time is not more than 6 months generally, but the requirements of industries such as engineering equipment and the like on the corrosion prevention performance of the pre-coating primer are far beyond the ranges. The requirements for the pre-primer are not only limited to storage rust prevention during production but also to be used as a coating for the final product. After the steel plate is sprayed with the pre-coat primer, various required processing is carried out, and the coating is required to have weldability and cutting performance.
The existing precoated primer has the following problems:
(1) poor drying properties: the use purpose of the precoating primer is to improve the turnover efficiency of the prefabricated steel plate for machining; the spraying of the pre-coating primer generally adopts the assembly line operation, the time span from the spraying to the stacking is about 5-7min, and the existing pre-coating primer has the problems of long drying time and delayed production rhythm.
(2) Poor weldability: the sheet metal welding process of large enterprises mostly adopts robot welding, the conductivity of a pre-coated primer paint film has great influence on the robot welding, when the conductivity of the paint film is poor, a welding wire is difficult to ignite, so that the robot cannot work normally, and the welding effect and the working efficiency are directly related; meanwhile, the welding ablation area is wide, and customers need to repair the ablated part of the paint film to enhance the corrosion resistance, so that more inconvenience is brought to coating operation.
(3) The antirust performance is general: the precoating primer has the biggest characteristics of quick drying and good adhesive force, and for large enterprises, the prefabricated steel plates of the enterprises need to be stored for a long time sometimes, so that the used precoating primer needs to have good antirust performance, otherwise, the steel plates are seriously corroded.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the ultra-quick-drying weldable shop primer which has high drying speed, better conductivity and small welding ablation radius.
The technical scheme adopted by the invention for solving the technical problems is as follows: an ultra-fast drying weldable shop primer comprising a component A and a component B; the component A comprises the following raw materials: high molecular weight low solid content epoxy resin liquid, ethyl acetate, superfine ferrophosphorus powder, mica iron oxide ash, rutile type titanium dioxide and anti-settling slurry; the component B comprises the following raw materials: phenolic aldehyde amine curing agent, dimethylbenzene and n-butyl alcohol;
the high molecular weight low solid content epoxy resin liquid is obtained by dissolving solid epoxy resin by a solvent, wherein the epoxy equivalent of the solid epoxy resin is 700-1800 g/eq, and the softening point is 85-135 ℃;
the solid content of the phenolic aldehyde amine curing agent is 20-40 wt%;
the anti-settling slurry is obtained by uniformly mixing an anti-settling agent and a solvent.
Preferably, the weight parts of the raw materials are as follows:
a component A: 10-30 parts of high molecular weight low-solid content epoxy resin liquid, 1-10 parts of ethyl acetate, 25-45 parts of superfine phosphorus iron powder, 10-30 parts of mica iron oxide ash, less than 5 parts of rutile titanium dioxide and 10-25 parts of anti-settling slurry;
b, component B: 20-40 parts of phenolic aldehyde amine curing agent, 40-60 parts of dimethylbenzene and 10-30 parts of n-butyl alcohol;
the component A and the component B are mixed according to the proportion of 100: 3-5 by mass ratio.
Preferably, the solid content of the high molecular weight low solid content epoxy resin solution is 40-60 wt%, and more preferably 50 wt%.
Preferably, the anti-settling agent accounts for 5-10 wt% of the anti-settling slurry.
Preferably, the phenolic amine curing agent is: the curing agent is prepared by dissolving the curing agent in an organic solvent.
Preferably, the amine value of the curing agent is 170-300 mg KOH/g, and the solid part is 70-80 wt%.
Preferably, the preparation method of the high molecular weight low solid content epoxy resin liquid comprises the following steps: and uniformly mixing the xylene and the n-butanol, adding solid epoxy resin, starting steam, heating until the solid epoxy resin is fully dissolved, and obtaining a resin solution.
Preferably, in the process of preparing the high molecular weight low solid content epoxy resin liquid, the uniform mixing is realized through stirring, and the stirring rotating speed is 200-400 r/min.
Preferably, the temperature of the steam is raised to 100-120 ℃.
Preferably, in the process of preparing the anti-settling slurry, the uniform mixing is realized through stirring, the rotating speed of the stirring is 700-1000r/min, the stirring time is 20-60 min (more preferably 30-40 min), and the temperature during stirring is 50-60 ℃. Under the condition, the anti-settling agent can be fully activated, and excessive activation is avoided.
Preferably, the solvent of the high-molecular-weight low-solid-content epoxy resin solution is a mixed solution of xylene and n-butanol, and the mass ratio of the xylene to the n-butanol is more preferably 3-4: 1.
Preferably, the solid epoxy resin is E06 and/or E12.
Preferably, the curing agent is one or more of MK-C2026 and JT-6015A, WSCM-1305.
Preferably, the organic solvent in the phenolic aldehyde amine curing agent is a mixed solution of xylene and n-butyl alcohol, and the mass ratio of the xylene to the n-butyl alcohol is preferably 3-4: 1.
Preferably, the anti-settling agent is one or more than two of BS-1A organic bentonite, fumed silica R972, fumed silica R974, BENGEL828 bentonite and 6900-20X anti-settling agent.
Preferably, the anti-settling solvent is toluene and/or xylene.
Preferably, the rutile type titanium dioxide is SR2377 titanium dioxide.
Preferably, the superfine ferrophosphorus powder is 500-mesh ferrophosphorus powder.
Preferably, the mica iron oxide ash is 500-mesh mica iron oxide ash.
Preferably, the preparation method of the component A comprises the following steps: uniformly mixing high molecular weight low-solid content epoxy resin liquid and anti-settling slurry, adding superfine ferrophosphorus powder and mica iron oxide ash, uniformly mixing, adding ethyl acetate, and uniformly mixing to obtain a component A of the pre-coating primer;
preferably, the preparation method of the component B comprises the following steps: and (3) uniformly mixing the phenolic aldehyde amine curing agent, the dimethylbenzene and the n-butyl alcohol to obtain a component B of the precoated primer.
Preferably, when the component A is prepared, the uniform mixing is realized through stirring, the stirring speed is 700-1000r/min, and the stirring temperature is 40-60 ℃.
Preferably, the viscosity of the A component is 100-.
Preferably, when the component B is prepared, the uniform mixing is realized through stirring, the stirring rotating speed is 200-400r/min, the stirring time is 20-40 min, and the stirring temperature is 20-40 ℃.
When in use, the component A and the component B are mixed evenly, and then spraying construction can be carried out. The coating film has certain hardness after being dried for 5-10min, and can be stacked without adhesion.
When the automatic priming paint spraying line is used for a priming paint automatic coating line, the moving speed of a steel plate of the priming paint line can be set to be 0.01-0.1 m/S, the steel plate moves into an automatic spraying chamber along with a conveyor belt after sand blasting, and then the priming paint spraying is carried out on the front side and the back side of the prefabricated steel plate by a reciprocating type robot hand; and airing the prefabricated steel plate sprayed with the pre-coated primer for 5-10min by a conveyor belt, and then stacking and storing the prefabricated steel plate in a stacking area.
The invention has the beneficial effects that:
(1) the invention takes high molecular weight epoxy resin as main resin, ferrophosphorus powder, titanium white powder and flaky mica iron oxide ash as fillers, and does not use zinc powder or other metalsIn the case of powder, the paint film has good conductivity (the surface resistance can be less than or equal to 10)5Omega), corrosion resistance, high temperature ablation resistance, excellent mechanical property and high drying speed, and can fully meet various requirements and requirements of various industries on the pre-coating primer at the present stage. The precoated primer can be cleaned by secondary sand blasting and can also be used as a part of a coating, the corrosion resistance of the precoated primer is obviously improved, and the precoated primer is completely suitable for the production process of an automatic precoated primer coating line;
(2) the preparation method has simple process, no need of sanding and lower production and manufacturing cost.
Detailed Description
The present invention is further illustrated by the following examples.
The solid epoxy resin used in each example is E06 or E12 epoxy resin of Jiangsu Sanmu group Co Ltd, and in order to better show the product universality, E06 and E12 epoxy resin are selected according to the mass ratio of 3:1 to prepare epoxy resin liquid; wherein the E06 epoxy resin has an epoxy equivalent of 1300-1700g/eq and a softening point of 117-127 ℃; the E12 epoxy resin used had an epoxy equivalent of 740-1100g/eq and a softening point of 90-106 ℃.
The superfine ferrophosphorus powder is 500-mesh ferrophosphorus powder of Shanghai Licautious chemicals Co.
The rutile type titanium dioxide is SR2377 titanium dioxide of Shandong Dongjia titanium industry Co.
The mica iron oxide ash is 500-mesh mica iron oxide ash of Zhirun scientific and technological development Limited company of Tongling, Anhui.
The used anti-settling agent BENGEL828 bentonite was purchased from D.S.A.; r974 fumed silicas are all available from degussa germany.
The curing agent in the phenolic aldehyde amine curing agent is MK-C2026 (solid content is 75-80 wt%, amine value is 250-290 mg KOH/g) of Changsha Gubang new material Co., Ltd, JT-6015A (solid content is 75-80 wt%, amine value is 185-225 mg KOH/g) of Shanghai Jingtian new material science and technology Co., Ltd, and WSCM-1305 (solid content is 72-78 wt%, amine value is 185-220 mg KOH/g) of Zhejiang Tengsheng Co Ltd; the organic solvent in the phenolic aldehyde amine curing agent is a mixed solution of xylene and n-butyl alcohol in a mass ratio of 3: 1.
Other starting materials or chemical reagents, unless otherwise specified, are available in conventional commercial sources.
Example 1
The raw material usage of this example is shown in tables 1 and 2.
Preparing high molecular weight low solid content epoxy resin liquid: adding 37.5 parts of dimethylbenzene and 12.5 parts of n-butanol into a size mixing kettle according to the mass parts, and starting low-speed stirring at the rotating speed of 200 r/min; and after uniformly mixing, slowly adding 50 parts of solid epoxy resin, after adding, starting steam to raise the temperature to 105 ℃, stirring for 40min, fully dissolving the solid epoxy resin to obtain a clear and transparent 50% epoxy resin solution, standing for 60min, and eliminating bubbles generated by stirring for later use.
Preparing anti-settling slurry: according to the mass parts, a movable barrel with a proper volume is taken, 32.2 parts of toluene, 58 parts of xylene, 9.5 parts of BENGEL828 bentonite and 0.3 part of R974 fumed silica are added, high-speed stirring is started at the rotating speed of 800R/min until no obvious lumps exist, the stirring time is 35min, the whole anti-settling activating process is carried out, the material temperature is 45-55 ℃, and 9.8% of anti-settling slurry is obtained for later use.
Preparation of the a component of this example: according to the weight parts of the raw materials in the example 1 of the table 2, firstly, 50 percent of epoxy resin solution and 9.8 percent of anti-settling slurry are mixed and stirred at a constant speed of 800r/min for 35 min; adding 32 parts of superfine phosphorus iron powder, 25 parts of mica iron oxide ash and 0.5 part of rutile type titanium dioxide, and stirring at a constant speed of 1000r/min for 30 min; without sanding, blending with ethyl acetate solvent until the viscosity is 100KU, stirring at constant speed for 30min, and filtering to obtain component A; the temperature in the whole process is 40-60 ℃.
Preparation of component b for this example: according to the weight parts of the raw materials in the embodiment 1 in the table 2, firstly adding the phenolic aldehyde amine curing agent, the dimethylbenzene and the n-butyl alcohol into a stirring barrel, and uniformly stirring for 35min at 300r/min to obtain a component B; the temperature in the whole process is 20-35 ℃.
Mixing the component A and the component B according to the ratio of 100: 4, and mixing according to the weight ratio of the components.
TABLE 1 high molecular weight low solids epoxy resin liquid, anti-settling stock in examples 1-3
TABLE 2 raw materials of component A and component B in examples 1 to 3
Note: in the table "/" indicates no addition; the composite ferrotitanium powder used in the comparative example is WD-B-500II composite ferrotitanium powder produced by Wuntada technology.
Example 2
The raw material usage of this example is shown in tables 1 and 2.
Preparing high molecular weight low solid content epoxy resin liquid: the same as in example 1.
Preparing anti-settling slurry: the same as in example 1.
Preparation of the a component of this example: according to the weight parts of the raw materials in the example 2 in the table 2, firstly, 50 percent of epoxy resin solution and 9.8 percent of anti-settling slurry are mixed and stirred at a constant speed for 45min at 700 r/min; adding 37 parts of superfine phosphorus iron powder, 20 parts of mica iron oxide ash and 0.5 part of rutile type titanium dioxide, and stirring at a constant speed of 800r/min for 40 min; without sanding, blending with ethyl acetate solvent until the viscosity is 108KU, stirring at constant speed for 35min, and filtering to obtain component A; the temperature in the whole process is 40-60 ℃.
Preparation of component b for this example: according to the weight parts of the raw materials in the example 2 in the table 2, firstly adding the phenolic aldehyde amine curing agent, the dimethylbenzene and the n-butyl alcohol into a stirring barrel, and stirring at a constant speed of 300r/min for 40min to obtain a component B; the temperature in the whole process is 30-35 ℃.
Mixing the component A and the component B according to the ratio of 100: 3.3, and mixing according to the weight ratio.
Example 3
The raw material usage of this example is shown in tables 1 and 2.
Preparing high molecular weight low solid content epoxy resin liquid: the same as in example 1.
Preparing anti-settling slurry: the same as in example 1.
Preparation of the a component of this example: according to the weight parts of the raw materials in the embodiment 3 shown in the table 2, firstly, 50 percent of epoxy resin solution and 9.8 percent of anti-settling slurry are mixed and stirred at a constant speed for 45min at 800 r/min; adding 39 parts of superfine phosphorus iron powder, 15 parts of mica iron oxide ash and 0.5 part of rutile type titanium dioxide, and stirring at a constant speed of 700r/min for 50 min; without sanding, blending with ethyl acetate solvent until the viscosity is 115KU, stirring at constant speed for 45min, and filtering to obtain component A; the temperature in the whole process is 40-60 ℃.
Preparation of component b for this example: according to the weight parts of the raw materials in the embodiment 3 shown in the table 2, firstly adding the phenolic aldehyde amine curing agent, the dimethylbenzene and the n-butyl alcohol into a stirring barrel, and stirring at a constant speed of 400r/min for 30min to obtain a component B; the temperature in the whole process is 30-40 ℃.
Mixing the component A and the component B according to the ratio of 100: 3.7, and mixing according to the weight ratio.
The results of testing important properties of the ultra-fast drying weldable shop primer of examples 1-3 are shown in Table 3.
Comparative example
The raw material usage of this example is shown in tables 1 and 2.
Preparing high molecular weight low solid content epoxy resin liquid: the same as in example 1.
Preparing anti-settling slurry: the same as in example 1.
Preparation of the a component of this example: according to the weight parts of the raw materials in the embodiment 3 shown in the table 2, firstly, 50 percent of epoxy resin solution and 9.8 percent of anti-settling slurry are mixed and stirred at a constant speed for 45min at 800 r/min; then adding 20 parts of composite ferrotitanium powder, 34 parts of mica iron oxide ash and 0.5 part of rutile type titanium dioxide, and stirring at a constant speed of 700r/min for 50 min; without sanding, blending with ethyl acetate solvent until the viscosity is 105KU, stirring at constant speed for 40min, and filtering to obtain component A; the temperature in the whole process is 45-60 ℃.
Preparation of component b for this example: according to the weight parts of the raw materials in the embodiment 3 shown in the table 2, firstly adding the phenolic aldehyde amine curing agent, the dimethylbenzene and the n-butyl alcohol into a stirring barrel, and stirring at a constant speed of 400r/min for 30min to obtain a component B; the temperature in the whole process is 30-40 ℃.
Mixing the component A and the component B according to the ratio of 100: 3.7, and mixing according to the weight ratio.
The results of the important property tests of the precoated primers obtained in examples 1 to 3 and comparative example are shown in table 3.
Table 3 results of actual measurement of film properties of precoated primers obtained in examples 1 to 3 and comparative examples
As can be seen from Table 3, the viscosities of the embodiments 1 to 3 all meet the requirements of site construction, the embodiments 1 to 3 all have higher drying speed and smaller welding ablation radius, and the embodiments 1 to 3 all can better meet the application requirements of products. The ultra-fast drying weldable pre-coating primer used for steel pretreatment has the advantages of high drying speed, good salt spray performance, small ablation radius and the like, so that the production efficiency is greatly improved while the existing process conditions are met. After formulation adjustment (as in comparative example), the conductivity of the resulting shop primer is significantly reduced and solderability is lost.
Claims (10)
1. An ultra-fast drying weldable shop primer, characterized by comprising a component A and a component B; the component A comprises the following raw materials: high molecular weight low solid content epoxy resin liquid, ethyl acetate, superfine ferrophosphorus powder, mica iron oxide ash, rutile type titanium dioxide and anti-settling slurry; the component B comprises the following raw materials: phenolic aldehyde amine curing agent, dimethylbenzene and n-butyl alcohol;
the high molecular weight low solid content epoxy resin liquid is obtained by dissolving solid epoxy resin by a solvent, wherein the epoxy equivalent of the solid epoxy resin is 700-1800 g/eq, and the softening point is 85-135 ℃;
the solid content of the phenolic aldehyde amine curing agent is 20-40 wt%;
the anti-settling slurry is obtained by uniformly mixing an anti-settling agent and a solvent.
2. The ultra-fast drying weldable shop primer according to claim 1, wherein the parts by weight of the raw materials are:
a component A: 10-30 parts of high molecular weight low-solid content epoxy resin liquid, 1-10 parts of ethyl acetate, 25-45 parts of superfine phosphorus iron powder, 10-30 parts of mica iron oxide ash, less than 5 parts of rutile titanium dioxide and 10-25 parts of anti-settling slurry;
b, component B: 20-40 parts of phenolic aldehyde amine curing agent, 40-60 parts of dimethylbenzene and 10-30 parts of n-butyl alcohol;
the component A and the component B are mixed according to the proportion of 100: 3-5 by mass ratio.
3. The ultra-fast drying weldable shop primer according to claim 1 or 2, wherein the high molecular weight low-solid epoxy resin solution has a solid content of 40-60 wt%; the anti-settling agent accounts for 5-10 wt% of the anti-settling slurry.
4. The ultra fast drying weldable shop primer according to claim 1 or 2, wherein the phenolic amine curing agent is: the curing agent is formed by dissolving an organic solvent; the amine value of the curing agent is 170-300 mg KOH/g, and the solid content is 70-80 wt%.
5. The ultra-fast drying weldable shop primer according to any one of claims 1-4, wherein the preparation method of the high molecular weight low solid content epoxy resin liquid is: and uniformly mixing the xylene and the n-butanol, adding solid epoxy resin, starting steam, heating until the solid epoxy resin is fully dissolved, and obtaining a resin solution.
6. The ultra-fast drying weldable shop primer according to claim 5, wherein in the process of preparing the high molecular weight low solid content epoxy resin liquid, the epoxy resin liquid is uniformly mixed by stirring, and the stirring speed is 200-400 r/min; raising the temperature of the steam to 100-120 ℃.
7. The ultra-fast drying weldable pre-coating primer as claimed in any one of claims 1 to 6, wherein in the anti-settling process, the anti-settling process is performed by stirring to achieve uniform mixing, the stirring speed is 700-1000r/min, the stirring time is 20-60 min, and the stirring temperature is 40-60 ℃.
8. The ultra-fast drying weldable shop primer according to any one of claims 1-7, wherein the solvent of the high molecular weight low solid content epoxy resin liquid is a mixed solution of xylene and n-butanol, and the mass ratio of the xylene to the n-butanol is preferably 3-4: 1; the solid epoxy resin is E06 and/or E12; the curing agent is one or more than two of MK-C2026 and JT-6015A, WSCM-1305; the organic solvent in the phenolic aldehyde amine curing agent is a mixed solution of xylene and n-butyl alcohol, and the mass ratio of the xylene to the n-butyl alcohol is preferably 3-4: 1; the anti-settling agent is one or more than two of BS-1A organic bentonite, fumed silica R972, fumed silica R974, BENGEL828 bentonite and 6900-20X anti-settling agent; the solvent for preventing the slurry from settling is toluene and/or xylene; the rutile type titanium dioxide is SR2377 titanium dioxide; the superfine ferrophosphorus powder is 500-mesh ferrophosphorus powder; the mica iron oxide ash is 500-mesh mica iron oxide ash.
9. The ultra fast drying weldable shop primer according to any one of claims 1 to 8, wherein the A component is prepared by: uniformly mixing high molecular weight low-solid content epoxy resin liquid and anti-settling slurry, adding superfine ferrophosphorus powder and mica iron oxide ash, uniformly mixing, adding ethyl acetate, and uniformly mixing to obtain a component A of the pre-coating primer; the preparation method of the component B comprises the following steps: and (3) uniformly mixing the phenolic aldehyde amine curing agent, the dimethylbenzene and the n-butyl alcohol to obtain a component B of the precoated primer.
10. The ultra-fast drying weldable shop primer according to claim 9, wherein the component A is prepared by stirring at a rotation speed of 700-; the viscosity of the component A is 100-120 KU; when the component B is prepared, the component B is uniformly mixed by stirring, the stirring speed is 200-400r/min, the stirring time is 20-40 min, and the stirring temperature is 20-40 ℃.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102993859A (en) * | 2012-11-28 | 2013-03-27 | 天长市开林化工有限公司 | Zinc powder-free shop primer and preparation method thereof |
| CN103805032A (en) * | 2014-03-10 | 2014-05-21 | 杭州萧山阳光涂料有限公司 | Epoxy salt mist-resisting anticorrosive paint and preparation method thereof |
| AU2021105527A4 (en) * | 2021-08-15 | 2021-10-14 | Qingdao University Of Science And Technology | Anti corrosion coating material |
-
2022
- 2022-01-04 CN CN202210000957.0A patent/CN114133834A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102993859A (en) * | 2012-11-28 | 2013-03-27 | 天长市开林化工有限公司 | Zinc powder-free shop primer and preparation method thereof |
| CN103805032A (en) * | 2014-03-10 | 2014-05-21 | 杭州萧山阳光涂料有限公司 | Epoxy salt mist-resisting anticorrosive paint and preparation method thereof |
| AU2021105527A4 (en) * | 2021-08-15 | 2021-10-14 | Qingdao University Of Science And Technology | Anti corrosion coating material |
Non-Patent Citations (1)
| Title |
|---|
| 李肇强: "《现代涂料的生产及应用 第2版》", 31 March 2017, 上海科学技术文献出版社 * |
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