CN101311233B - Epoxy anti-corrosive paint for underwater construction and preparation method - Google Patents
Epoxy anti-corrosive paint for underwater construction and preparation method Download PDFInfo
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- CN101311233B CN101311233B CN2007100228215A CN200710022821A CN101311233B CN 101311233 B CN101311233 B CN 101311233B CN 2007100228215 A CN2007100228215 A CN 2007100228215A CN 200710022821 A CN200710022821 A CN 200710022821A CN 101311233 B CN101311233 B CN 101311233B
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Abstract
The present invention relates to a smearing epoxy anti-corrosion coating for underwater concrete and steel structure and the preparation thereof, comprising the blending of component A and component B. The present invention is characterized in that the Component A consists of 20-40wt percent of solvent-free epoxide resin, 0-6wt percent of glycidyl ether epoxy active diluent, 13-50wt percent of barite powder, 0-30wt percent of titanium pigment, 0.5-2wt percent of modified polyamide thixotropic agent, 0.2-0.5wt percent of dispersant, 0.2-0.5wt percent of defoamer and 1-4wt percent of resin acceptor; the preparation viscosity is 40000-120000cP and the proportion is 1.5-2.5. The component B consists of 10-30wt percent of C5-C20 hydrocarbon chain Mannich di-benzene-ring epoxy curing agent, 2-10 percent of reaction typed promoter, 2, 4, 6-tri-dialkyl amine alkylamine methyl phenol. The coating of the invention has the advantages of strong adhesive attraction at the initial stage, excellent initial adhesive attraction under dynamic water, quick solidification in underwater construction and no drain and spalling, and can resist the impact of water with the speed of 1m per second, realize initial set in an hour to reach 30-50 percent of the design strength and reach more than 1MPa of bond strength in 24 hours, thereby overcoming the disadvantage of difficult coating under dynamic water of the existing epoxy coating.
Description
Technical field
The present invention relates to a kind of corrosion-resistant epoxy paint, especially concrete and steel construction are smeared corrosion-resistant epoxy paint and preparation under water.
Background technology
The severe corrosive of seawater can cause concrete and corrosion of steel structure, and useful life shortens, and jeopardizes safety.Existing various protective systems are corrosion-resistant epoxy paint for example, because initial viscosity is relatively low, initial poor adhesive force can only be attached to desiccated surface usually, and the underwater construction meeting causes coating to run off, peel off, and is especially more difficult in moving underwater construction set.
Chinese patent CN200610078029.7 discloses a kind of heavy-duty coating, and by weight percent: modification does not have phenyl ring epoxy resins 42-45, T31 type zwitterion exchange fat 8-10,2500 order JS talcum powder 9-11,2000 order UV silica powder 13-15; GE titanium dioxide 5-7, SPA-1 defoamer 2-3.5, adhesion promoter 4-6, VG surface control auxiliary agent 2.5-4, the anti-algae agent of film forming 2-3.5, cellulose acetate butyrate 1.5-2.3, pure poly-tetrafluoro moisture retardant 2-2.5 forms.The surface drying of this coating 5 hours was done solid work 10 hours, and initial viscosity is still lower, can only be used for construction under the hydrostatic condition at most, and not be suitable for moving underwater construction.
The disclosed ocean of Chinese patent CN200410050479.6 heavy-duty coating, constitute by two kinds of components of A, B, wherein B component (mill base) comprises Resins, epoxy 30～50%, properties-correcting agent 0～10%, sequestrant 0.1～1%, pigment 5～25%, filler 5～20%, thickening material 0.5～2%, dispersion agent 0～0.2%, wetting agent 0.1～0.3%, flow agent 0.2～0.5%, defoamer 0.2～0.4%, described properties-correcting agent comprise the epoxy compounds of simple function group or the epoxy compounds of bifunctional, perhaps be liquid resin, perhaps for not containing the plasticity compound of epoxy group(ing); A component (solidifying agent) comprises phenolic aldehyde amine curing agent 20～30%, ketoimine 0～5%.Though patent shortens to some extent on the surface drying time, but still need 4 hours, did solid work 24 hours, fail effectively to solve moving, especially moving underwater brushable paint equally under water and run off, peel off a difficult problem, still be difficult to use in moving underwater construction; Secondly, this coating is higher to the dirt settling surface requirements, and surface treatment will reach the ST3 level at least, is difficult to use in the underwater concrete external coating.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, a kind of initial adhesion intensity height is provided, initial strong adhesion, and viscosity is low in self, can construct and well attached epoxy anti-corrosive paint for underwater construction under moving water condition.
Another object of the present invention is to provide a kind of preparation method of above-mentioned coating.
The present invention's first purpose realizes, the main improvement is by increasing the high specific gravity filler in epoxy coating, adopting modified polyamide thixotropic agent, C5-C20 hydrocarbon chain Manny phase epoxy hardener and response type promotor, thereby overcome the deficiencies in the prior art, especially improve coating initial adhesion intensity under water, realized the object of the invention.Specifically, epoxy anti-corrosive paint for underwater construction of the present invention comprises that A component and B component use mixing, it is characterized in that the A component consists of the solvent-free liquid-state epoxy resin of 20-40wt%, 0-6wt% glycidyl ether epoxy active diluent, 13-50wt% ground barium sulfate, 0-30wt% titanium dioxide, 0.5-2wt% modified polyamide thixotropic agent, 0.2-0.5wt% dispersion agent, 0.2-0.5wt% defoamer, 1-4wt% coupling agent, make viscosity 40000～120000cP, proportion 1.5～2.5; The B component consists of two phenyl ring epoxy hardeners of 10-30wt%C5-C20 hydrocarbon chain Manny phase, 2-10% response type promotor 2,4,6-three-dialkylamine pheynylalkylamine methylphenol.
Among the present invention
Adding ground barium sulfate, mainly is the proportion that improves coating, helps improving coating initial adhesion intensity and physical strength under water, and has improved the anti-floating under water of coating;
The modified polyamide thixotropic agent, a main thixotropic transformation, between resin and filler, form network structure, both can improve the sag resistance of coating, can reduce the internal adhesion of coating self again, thereby smear resistance (having improved the application property of high viscosity coating) when having reduced construction, be convenient to smear and adhere to;
Two phenyl ring epoxy hardeners of C5-C20 hydrocarbon chain Manny phase, curing speed is accelerated in main effect, to improve initial stage sticking power, more normally used no phenyl ring or single phenyl ring epoxy hardener, good with the compatibility of Resins, epoxy, improved the density and the weather resistance of paint film, the physical strength height has also improved the wetting ability of coating in addition by phenolic group in the solidifying agent and amido, reach wet purpose, help applying overflowing of back inner moisture, and hydrocarbon chain structure wherein, drainage also had.
Response type promotor 2,4,6-three-dialkylamine pheynylalkylamine methylphenol (C6H2OH (CH2NHR1N (R2) 2) 3, R1 wherein, R2 is the alkyl of 1～5 carbon atom), both can fast reaction speed, participate in crosslinking reaction again, and have the surface of good wettability, thereby improved the initial and final surface adhesion intensity of coating; Its structural formula is as follows:
R1 wherein, R2 is the alkyl of 1-5 C atoms.
All the other component kinds are that epoxy coating is general, act on similar substantially, this separately the narration.
The better proportioning of the present invention is: the A component consists of: the solvent-free liquid-state epoxy resin of 22-30wt%, 0-5wt% glycidyl ether epoxy active diluent, 15-30wt% ground barium sulfate, 5-15wt% titanium dioxide, 0.5-1.5wt% modified polyamide thixotropic agent, 0.2-0.5wt% dispersion agent, 0.2-0.5wt% defoamer, 2-3wt% coupling agent is made viscosity 40000～120000cP, proportion 1.6～2.2; The B component consists of: two phenyl ring epoxy hardeners of 15-25wt%C5-C20 hydrocarbon chain Manny phase, 2-8% response type promotor 2,4,6-three-dialkylamine pheynylalkylamine methylphenol.
The preparation of coating of the present invention comprises above-mentioned A component and B component raw material is mixed respectively separately, packs respectively, it is characterized in that the A component is prepared as raw material and mixes high speed dispersion, and is incubated 0.5-1.5 hours down at 50～70 ℃.
Underwater construction cured epoxy protective system of the present invention owing to adopt above-mentioned composition, make coating rate of drying, viscosity, proportion, internal adhesion and hydrophilicly hydrophobicly reach organic balanced, improved initial stage sticking power and the under water easy application property of coating under moving water condition.For example the initial viscosity of coating and anti-water buoyancy improve greatly, can resist the water impact of 1 meter per second, just can realize initial set in one hour, reach 30～50% design strength, cohesive strength can reach more than the 1MPa in 24 hours, coating initial stage sticking power height makes coating just possess the anti-current-rush ability in very short time; The sag resistance of coating improves, and coating can not trickled when especially moving under water water was smeared construction; The interior viscosity of coating reduces, and has guaranteed the easy application property of high viscosity coating, has both helped the construction brushing, makes again to smear Shi Buhui pulling bottom or position on every side, smears the sticking power that the position had existed already thereby protected, and has also improved resistance leachability; The balance of coating hydrophilic and hydrophobic can be sprawled coating under water smoothly but is not dissolved in water, and commute application property and Anti-lost also are favourable.Coating of the present invention; the sticking power that not only possesses conventional corrosion-resistant epoxy paint is good, physical strength is high, durable good; the excellent characteristics of preservative property; especially possess moving and have good initial sticking power under water; the underwater construction quick solidifying; can not run off, peel off; be specially adapted to concrete, steel construction in the Jiang Haihe stream; corrosionproof protections such as bridge spanning the sea bridge pier, harbour and flood-control wall for example; and can directly smear construction on the concrete clean surface under water, be difficult to the defective of concrete surface application under water thereby solved existing corrosion-resistant epoxy paint.
Below in conjunction with several specific embodiments, further specify the present invention and advantage.
Embodiment
Embodiment 1:25wt% liquid-state epoxy resin 618,1wt% glycidyl ether epoxy active diluent AGE, 23wt%800 order ground barium sulfate, 22wt% titanium dioxide, 0.5wt% modified polyamide thixotropic agent CRAYVALLEC ULTRA, 0.5wt% dispersion agent DISPERBYK163,0.2wt% defoamer BYK066N, 3wt% coupling agent SILANE A187, after the mixing, high speed dispersion and 60-65 ℃ is incubated 1 hour, makes 25 ℃ of about 60000cP of viscosity, the A component of proportion about 2.0.17wt% is with C9 hydrocarbon chain Manny phase epoxy hardener D0964 (Shanghai Du's ear chemical industry company limited produces, down together), 8wt% response type promotor 2,4,6-three-dialkylamine pheynylalkylamine methylphenol D0592 (Shanghai Du's ear chemical industry company limited produces, down together), the mixed B component that gets.A, B component are mixed, and under the condition of about 1.0 meter per seconds of flow velocity, concrete surface can be smeared smoothly under water, does not come off, and bonding strength can reach 1MPa after 24 hours.
Embodiment 2:20wt% liquid-state epoxy resin 6101,5wt% glycidyl ether epoxy active diluent 501,21wt%400 order ground barium sulfate, 29wt% titanium dioxide, 1.2wt% modified polyamide thixotropic agent CRAYVALLEC ULTRA, 0.2wt% dispersion agent DISPERBYK163,0.4wt% defoamer BYK066N, 2wt% coupling agent SILANE A187, after the mixing, through high speed dispersion and 60-65 ℃ insulation 1 hour, make 25 ℃ of about 100000cP of viscosity, the A component of proportion about 1.8.18wt% is with C15 hydrocarbon chain Manny phase epoxy hardener D0963,2wt% response type promotor 2,4, the mixed B component that gets of 6-three-dialkylamine pheynylalkylamine methylphenol D0592.A, B component are mixed, and under the condition of about 1.0 meter per seconds of flow velocity, concrete surface can be smeared smoothly under water, does not come off, and bonding strength can reach 1MPa after 24 hours.
Embodiment 3:14wt% liquid-state epoxy resin 6101,14wt% liquid-state epoxy resin 618,4wt% glycidyl ether epoxy active diluent 501,20wt% ground barium sulfate 400 orders, the 17wt% titanium dioxide, 1.5wt% modified polyamide thixotropic agent CRAYVALLEC ULTRA, 0.5wt% dispersion agent DISPERBYK163,0.5 defoamer BYK066N, 0.5wt% coupling agent SILANE A187 is after the mixing, through high speed dispersion and 60-65 ℃ insulation 1 hour, make 25 ℃ of about 100000cP of viscosity, the A component of proportion about 2.1.15wt% is with C9 hydrocarbon chain Manny phase epoxy hardener D0964,3wt% response type promotor 2,4,6-three-dialkylamine pheynylalkylamine methylphenol D0592, the mixed B component that gets.A, B component are mixed, and under the condition of about 1.0 meter per seconds of flow velocity, concrete surface can be smeared smoothly under water, can not come off, and bonding strength can reach 1MPa after 24 hours.
Embodiment 4:38wt% liquid-state epoxy resin 618,48wt% ground barium sulfate 400 orders, 2.0wt% modified polyamide thixotropic agent CRAYVALLEC ULTRA, 0.3wt% dispersion agent DISPERBYK163,0.2 defoamer BYK066N, 2.5wt% coupling agent SILANE A187, after the mixing, through high speed dispersion and 60-65 ℃ insulation 1 hour, make 25 ℃ of about 90000cP of viscosity, the A component of proportion about 2.3.22wt% is with C9 hydrocarbon chain Manny phase epoxy hardener D0964,5wt% response type promotor 2,4,6-three-dialkylamine pheynylalkylamine methylphenol D0592, the mixed B component that gets.A, B component are mixed, and under the condition of about 1.0 meter per seconds of flow velocity, concrete surface can be smeared smoothly under water, can not come off, and bonding strength can reach 1MPa after 24 hours.
Claims (3)
1. epoxy anti-corrosive paint for underwater construction, comprise that A component and B component use mixing, is characterized in that by consisting of the solvent-free liquid-state epoxy resin of 20-40wt%, 0-6wt% glycidyl ether epoxy active diluent, the 13-50wt% ground barium sulfate, the 0-30wt% titanium dioxide, 0.5-2wt% modified polyamide thixotropic agent, 0.2-0.5wt% dispersion agent, the 0.2-0.5wt% defoamer, the 1-4wt% coupling agent is made viscosity 40000～120000cP, the A component of proportion 1.5～2.5; The B component consists of two phenyl ring epoxy hardeners of 10-30wt% C5-C20 hydrocarbon chain Manny phase, 2-10wt% response type promotor 2,4,6-three (dialkylamine pheynylalkylamine methyl) phenol; Said modified polyamide thixotropic agent is CRAYVALLEC ULTRA, and the said C5-C20 hydrocarbon chain Manny phase, two phenyl ring epoxy hardeners were D0963 or D0964.
2. according to the described epoxy anti-corrosive paint for underwater construction of claim 1, it is characterized in that by consisting of: the solvent-free liquid-state epoxy resin of 22-30wt%, 0-5wt% glycidyl ether epoxy active diluent, 15-30wt% ground barium sulfate, 5-15wt% titanium dioxide, 0.5-1.5wt% modified polyamide thixotropic agent, the 0.2-0.5wt% dispersion agent, 0.2-0.5wt% defoamer, 2-3wt% coupling agent, make viscosity 40000～120000cP, the A component of proportion 1.6～2.2; The B component consists of: two phenyl ring epoxy hardeners of 15-25wt%C5-C20 hydrocarbon chain Manny phase, 2-8wt% response type promotor 2,4,6-three (dialkylamine pheynylalkylamine methyl) phenol.
3. according to the preparation of claim 1 or 2 described epoxy anti-corrosive paint for underwater construction, comprise above-mentioned A component and B component raw material are mixed respectively separately, pack respectively, it is characterized in that the A component is prepared as raw material and mixes high speed dispersion, and be incubated 0.5-1.5 hour down at 50～70 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007100228215A CN101311233B (en) | 2007-05-22 | 2007-05-22 | Epoxy anti-corrosive paint for underwater construction and preparation method |
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| CN2007100228215A CN101311233B (en) | 2007-05-22 | 2007-05-22 | Epoxy anti-corrosive paint for underwater construction and preparation method |
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| Publication Number | Publication Date |
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| CN101311233A CN101311233A (en) | 2008-11-26 |
| CN101311233B true CN101311233B (en) | 2011-08-31 |
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| CN101747820B (en) * | 2008-12-10 | 2012-04-18 | 上海海悦涂料有限公司 | Solvent-free epoxy rust-proof paint |
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| CN101921527B (en) * | 2009-06-10 | 2012-11-21 | 海洋化工研究院 | Anticorrosive paint for copper alloy and manufacturing method thereof |
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| CN103881530A (en) * | 2014-02-26 | 2014-06-25 | 施俊杰 | Preparation method of epoxy resin anticorrosive material |
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| CN105969050B (en) * | 2016-05-26 | 2018-10-23 | 中华制漆（深圳）有限公司 | A kind of Environment-friendlyanti-corrosive anti-corrosive paint and preparation method thereof |
| CN106010142B (en) * | 2016-08-08 | 2017-12-19 | 中山市长博电子绝缘材料有限公司 | A kind of wear-resisting single component epoxy coating of dual cure and preparation method thereof and application method |
| CN106882938A (en) * | 2017-04-18 | 2017-06-23 | 安徽省康宇水电机械成套设备有限公司 | A kind of hydraulic engineering underwater construction dedicated mortar |
| CN108487330A (en) * | 2018-02-13 | 2018-09-04 | 石狮华宝新材料工程有限公司 | Can underwater construction or submersible nano anti-corrosive, impervious layer and construction method |
| CN112521828A (en) * | 2020-11-30 | 2021-03-19 | 中广健医疗科技有限公司 | Underwater concrete antifouling coating material |
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