CN101985540A - Preservative primer used for ocean steel structure spray polyurea - Google Patents
Preservative primer used for ocean steel structure spray polyurea Download PDFInfo
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- CN101985540A CN101985540A CN2009103048904A CN200910304890A CN101985540A CN 101985540 A CN101985540 A CN 101985540A CN 2009103048904 A CN2009103048904 A CN 2009103048904A CN 200910304890 A CN200910304890 A CN 200910304890A CN 101985540 A CN101985540 A CN 101985540A
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Abstract
The invention provides a preservative primer used for ocean steel structure spray polyurea, aiming at improving adhesive force of polyurea on the surface of steel structure and improving preservative property thereof. The preservative primer of the invention is of bicomponent polyurethane type. Component A is composed of epoxy resin, thickening resin, anti-rust pigments and fillers, thixotropic agent, solvent and other auxiliaries, and component B is composed of isocyanate, macromolecule hydroxyl polyalcohol, micromolecule hydroxyl polyalcohol and solvent. Experiment shows that the primer of the invention has the following characteristics: 1) adhesive force on the surface of steel structure is good, pull-off adhesive force thereof is more than or equal to 9MPa; 2) flexibility is good, and compatibility with spray polyurea is good; 3) surface treatment is low, construction is easy, and repainting time is 16h at minimum and can reach 60 days at the maximum; 4) preservative property is excellent.
Description
Technical field
The invention belongs to protective system, specifically, relate to a kind of ocean steel construction spray polyurea anti-corrosion primer.
Background technology
Ocean environment is very harsh corrosive environment, and the steel construction facility that is exposed in the ocean environment very easily is subjected to heavy corrosion with surrounding medium generation electrochemical reaction.At present, one of corrosionproof protection approach of ocean large-scale steel structure facility is to adopt spray polyurea, and spray polyurea easy construction on the one hand once just can be sprayed onto several millimeters; The polyureas snappiness is good on the other hand, and anti-collision is not easy cracking.Though but certain thickness polyureas can provide good barrier performance, because existing polyureas is not good to the sticking power on steel construction surface, the method sticking power of drawing back is generally about 6MPa, long and for a long time it, can produce small peeling off, and then expansion, its antiseptic property is often had a greatly reduced quality.
Summary of the invention
The invention provides a kind of ocean steel construction spray polyurea anti-corrosion primer, it can solve the problem of the surface adhesion force difference of prior art existence.
The present invention mainly provides a kind of ocean steel construction spray polyurea anti-corrosion primer, improves the sticking power of polyureas to the steel construction surface, to improve its comprehensive anticorrosive performance.
In order to reach the purpose that solves the problems of the technologies described above, the technical solution of the utility model is that a kind of ocean steel construction spray polyurea anti-corrosion primer is characterized in that: described anti-corrosion primer adopts A and B two-pack modified polyurethane system,
The composition and the weight percent of described A component are as follows: described A component comprises Resins, epoxy, tackifying resin, antirust color stuffing, thixotropic agent, solvent and auxiliary agent, wherein epoxy resin content is 10～35%, tackifying resin content is 1～10%, antirust color stuffing content is 35～60%, thixotropic agent content is 1～10%, solvent is 20～40%, and auxiliary agent content is 1～5%;
The composition and the weight percent of described B component are as follows: described B component comprises isocyanic ester and the pure and mild ammonia ester of hydroxy polybasic level common solvent, described hydroxyl polyol is the mixture of macromole hydroxyl polyol and micromolecular hydroxyl polyvalent alcohol, wherein, described isocyanate content is 5～20%, described macromole hydroxyl polyol content is 15～40%, micromolecular hydroxyl polyvalent alcohol content is 5～20%, and ammonia ester level common solvent content is 20～60%;
Described A component: the weight ratio of B component is 2: 0.5～3.0, solidifies.
The present invention has following additional technical feature:
Resins, epoxy in the described A component is the dihydroxyphenyl propane solid epoxy of oxirane value between 0.02～0.2mol/100g.
Described Resins, epoxy can be in epoxy 604, epoxy 607 or the epoxy 609 one or more.
Tackifying resin in the described A component is one or more in resol, coumarone indene resin or the petroleum resin.Main effect is the ply adhesion of giving the low surface-treated characteristics of priming paint and increase and spray polyurea.
Antirust color stuffing in the described A component is one or more in red iron oxide, iron mica, zinc phosphate or the aluminium triphosphate, does not adopt the chromate rust-stabilising pigment in the prescription.
Thixotropic agent in the described A component is one or more in hydrogenated castor oil, organobentonite, aerosil, polyamide wax or the modified urea solution.Thixotropic agent is for higher thixotropic property being provided, being convenient to construction.
Auxiliary agent in the described A component is one or more in anti-settling agent, defoamer, wetting dispersing agent, flow agent or the catalyzer
Solvent in the described A component is one or more in pimelinketone, dimethylbenzene, N-BUTYL ACETATE, butanone or the methyl iso-butyl ketone (MIBK).
Isocyanic ester in the described B component is one or more in tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, hexamethylene diisocyanate or the liquefied mdi.
The hydroxyl value of the described macromole hydroxyl polyol in the described B component is 28～112mgKOH/g.
Described macromole hydroxyl polyol in the described B component is one or more in polyethers, tetrahydrofuran (THF) polyethers or copolyether, the hydroxy'terminated butadiene nitrile rubber, and described polyethers is at least a in polyethers 1000, polyethers 2000 or the polyethers 3050; Described tetrahydrofuran (THF) polyethers or copolyether are at least a among PTMEG1000, PTMEG2000, NG210 or the NG220.
The mixture that described micromolecular hydroxyl polyvalent alcohol in the described B component is dibasic alcohol and/or polyvalent alcohol; Described polyvalent alcohol is one or more in glycerine, TriMethylolPropane(TMP), trimethylolethane, trihydroxyethyl isocyanuric ester or the tetramethylolmethane.
Control NCO content weight percent is 3～8% in isocyanic ester in the described B component and the hydroxyl polyol reaction.
Anti-corrosion primer of the present invention is the dual-component polyurethane type.Wherein the A component is made up of Resins, epoxy, tackifying resin, antirust color stuffing, thixotropic agent, solvent and other auxiliary agents.The B component is by isocyanic ester, macromole hydroxyl polyol, micromolecular hydroxyl polyvalent alcohol and solvent composition.
The B component is that isocyanic ester and hydroxyl polyol heat the reactant that makes in reactor.And add appropriate amounts of ammonia ester level common solvent, to reduce viscosity.Control NCO content is 3～8% in the reaction.
Ammonia ester level common solvent in the described B component can be in N-BUTYL ACETATE, vinyl acetic monomer, dimethylbenzene or the butanone one or more.
Anti-corrosion primer of the present invention adopts the modified polyurethane system, is used for improving the sticking power of polyureas to the steel construction surface, to improve its antiseptic property.Our experiments show that priming paint of the present invention has following characteristics: 1) good to the steel construction surface adhesion force, it draws back method sticking power and is 〉=9MPa (cohesive failure); 2) snappiness is good, and is good with the matching capacity of spray polyurea; 3) low surface treatment, easy construction, repainting hours is the shortest to be 16h, the longlyest reaches 60 days; 4) antiseptic property excellence through this priming paint of spraying 150 μ, sprays the model of 1mm, 2mm polyureas again, can pass through the 5000h salt-fog test, and unprimed contrast model, polyurea coating then sheet comes off.
Embodiment
For better explanation the present invention, the spy enumerates following embodiment, but the present invention is not limited only to following embodiment.
Embodiment 1
Weight percent, unit (kg)
A component: 604 epoxies (oxirane value is 0.12) 20%, resol 3%, iron mica 17%, zinc phosphate 29%, aerosil 2%, pimelinketone 8%, dimethylbenzene 19.0995%, 229 anti-settling agent 1%, wetting dispersing agent 0.5%, defoamer 0.4%, dibutyl tin laurate 0.5 ‰;
B component: polyethers 2000 (hydroxyl value is 56) 30%, tolylene diisocyanate 10%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 1, solidifies.
Embodiment 2
Weight percent, unit (kg)
A component: 604 epoxies 20%, coumarone indene resin 2%, iron mica 16%, zinc phosphate 28%, aluminium triphosphate 4.6%, aerosil 1%, organobentonite 1%, methyl iso-butyl ketone (MIBK) 17%, dimethylbenzene 9.9995%, defoamer 0.4%, dibutyl tin laurate 0.5 ‰;
B component: hydroxy'terminated butadiene nitrile rubber (hydroxyl value is 28) 13%, polyethers 2000 (hydroxyl value is 56) 10%, tolylene diisocyanate 8%, glycerine 9%, dimethylbenzene 60%;
The A component: the B component is 2: 1.5, solidifies.
Embodiment 3
Weight percent, unit (kg)
A component: 609 epoxies (oxirane value is 0.03) 20%, coumarone indene resin 2%, iron mica 13%, zinc phosphate 29%, aluminium triphosphate 5%, aerosil 1%, organobentonite 1%, 229 anti-settling agents 1%, pimelinketone 10%, dimethylbenzene 17.3995%, defoamer 0.4%, flow agent 0.2%, dibutyl tin laurate 0.5 ‰;
B component: polyethers 2000 (hydroxyl value is 56) 30%, tolylene diisocyanate 10%, trimethylolethane 10%, dimethylbenzene 50%;
The A component: the B component is 2: 0.8, solidifies.
Embodiment 4
Weight percent, unit (kg)
A component: 604 epoxies 24%, petroleum resin 2%, iron mica 17%, zinc phosphate 27%, aerosil 1%, hydrogenated castor oil 0.6%, 229 anti-settling agent 1%, pimelinketone 10%, dimethylbenzene 16.9995%, defoamer 0.4%, dibutyl tin laurate 0.5 ‰;
B component: PTMEG2000 (hydroxyl value is 56) 24%, tolylene diisocyanate 8%, TriMethylolPropane(TMP) 8%, dimethylbenzene 60%;
The A component: the B component is 2: 1.5, solidifies.
Embodiment 5
Weight percent, unit (kg)
A component: 604 epoxies 22.7%, coumarone indene resin 3%, iron mica 16%, zinc phosphate 29%, aerosil 1%, organobentonite 1%, pimelinketone 10%, dimethylbenzene 16.9995%, defoamer 0.3%, dibutyl tin laurate 0.5 ‰;
B component: hydroxy'terminated butadiene nitrile rubber (hydroxyl value is 28) 14%, polyethers 1000 (hydroxyl value is 112) 20%, tolylene diisocyanate 9%, tetramethylolmethane 7%, dimethylbenzene 50%;
The A component: the B component is 2: 1.5, solidifies.
Embodiment 6
Weight percent, unit (kg)
A component: 604 epoxies 22%, coumarone indene resin 3%, iron mica 10%, red iron oxide 6%, zinc phosphate 28.6%, aerosil 1%, organobentonite 1%, pimelinketone 10%, dimethylbenzene 16.9995%, modified urea 1%, defoamer 0.4%, dibutyl tin laurate 0.5 ‰;
B component: polyethers 2000 (hydroxyl value is 112) 28%, hexamethylene diisocyanate 12%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 1, solidifies.
Embodiment 7
Weight percent, unit (kg)
A component: 607 epoxies (oxirane value is 0.06) 20%, coumarone indene resin 3%, iron mica 22%, zinc phosphate 19%, aluminium triphosphate 5%, aerosil 1%, organobentonite 1%, 229 anti-settling agents 1%, pimelinketone 10%, dimethylbenzene 17.3998%, defoamer 0.4%, flow agent 0.2%, dibutyl tin laurate 0.2 ‰;
B component: polyethers 2000 (hydroxyl value is 56) 25%, diphenylmethanediisocyanate 15%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 0.8, solidifies.
Embodiment 8
Weight percent, unit (kg)
A component: 604 epoxies 20%, resol 3%, iron mica 17%, zinc phosphate 29%, aerosil 2%, pimelinketone 10%, dimethylbenzene 17%, 229 anti-settling agent 1%, defoamer 1%;
B component: polyethers 200030%, tolylene diisocyanate 10%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 1, solidifies.
Embodiment 9
Weight percent, unit (kg)
A component: 607 epoxies 20%, coumarone indene resin 2%, iron mica 16%, zinc phosphate 30%, aerosil 2%, 229 anti-settling agent 1%, pimelinketone 10%, dimethylbenzene 17%, wetting dispersing agent 2%;
B component: polyethers 200030%, tolylene diisocyanate 10%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 1.2, solidifies.
Embodiment 10
Weight percent, unit (kg)
A component: 609 epoxies 20%, coumarone indene resin 2%, iron mica 17%, zinc phosphate 29%, aerosil 2%, 229 anti-settling agent 0.5%, pimelinketone 10%, dimethylbenzene 17%, flow agent 2.5%;
B component: PTMEG200030%, tolylene diisocyanate 10%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 0.8, solidifies.
Embodiment 11
Weight percent, unit (kg)
A component: 604 epoxies 20%, coumarone indene resin 2%, iron mica 17%, zinc phosphate 30%, aerosil 2%, 229 anti-settling agent 1%, pimelinketone 10%, dimethylbenzene 17%, defoamer 1%;
B component: NG22030%, tolylene diisocyanate 10%, TriMethylolPropane(TMP) 10%, dimethylbenzene 50%;
The A component: the B component is 2: 1.1, solidifies.
In the above-described embodiments, the Resins, epoxy in the described A component is the dihydroxyphenyl propane solid epoxy of oxirane value between 0.02～0.2mol/100g.
The hydroxyl value of the macromole hydroxyl polyol in the described B component is 28～112mgKOH/g.
Described macromole hydroxyl polyol in the described B component can be in polyethers, tetrahydrofuran (THF) polyethers or copolyether, the hydroxy'terminated butadiene nitrile rubber one or more, and what described polyethers can be in polyethers 1000, polyethers 2000 or the polyethers 3050 is at least a; Described tetrahydrofuran (THF) polyethers or copolyether are at least a among PTMEG1000, PTMEG2000, NG210 or the NG220.
Control NCO weight percent content is 3～8% in isocyanic ester in the described B component and the hydroxyl polyol reaction.
Our experiments show that, by the priming paint that embodiment 1～11 makes, sticking power all 〉=9Mpa, shock-resistance all 〉=50Kgcm, snappiness is 1mm.The thickness of once constructing can reach 100 μ m, even in the facade phenomenon of also can not trickling.
Embodiment 1～11 has good recoatability, and overlay painting interval the longest is 60 days.Embodiment 4,7 sticking power are better, draw back method sticking power 〉=12Mpa.
Spray the priming paint 150 μ m of embodiment 1～11, spray the model of 1mm, 2mm polyureas again, can pass through the 5000h salt-fog test, and unprimed contrast model, polyurea coating then sheet comes off.
Anti-corrosion primer of the present invention is exclusively used in the anti-corrosion protection of polyureas spraying steel construction, is used for improving the sticking power of polyureas to the steel construction surface, to improve its comprehensive antiseptic property.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (9)
1. ocean steel construction spray polyurea anti-corrosion primer is characterized in that: described anti-corrosion primer adopts A and B two-pack modified polyurethane system,
The composition and the weight percent of described A component are as follows: described A component comprises Resins, epoxy, tackifying resin, antirust color stuffing, thixotropic agent, solvent and auxiliary agent, wherein, described epoxy resin content is 10～35%, described tackifying resin content is 1～10%, described antirust color stuffing content is 35～60%, described thixotropic agent content is 1～10%, and described solvent is 20～40%, and described auxiliary agent content is 1～5%;
The composition and the weight percent of described B component are as follows: described B component comprises isocyanic ester and the pure and mild ammonia ester of hydroxy polybasic level common solvent, described hydroxyl polyol is the mixture of macromole hydroxyl polyol and micromolecular hydroxyl polyvalent alcohol, wherein, described isocyanate content is 5～20%, described macromole hydroxyl polyol content is 15～40%, described micromolecular hydroxyl polyvalent alcohol content is 5～20%, and described ammonia ester level common solvent content is 20～60%;
Described A component: the weight ratio of B component is 2: 0.5～3.0, solidifies.
2. according to the described anti-corrosion primer of claim 1, it is characterized in that: the Resins, epoxy in the described A component is the dihydroxyphenyl propane solid epoxy of oxirane value between 0.02～0.2mol/100g.
3. according to the described anti-corrosion primer of claim 2, it is characterized in that: the tackifying resin in the described A component is one or more in resol, coumarone indene resin or the petroleum resin.
4. according to the described anti-corrosion primer of claim 3, it is characterized in that: the antirust color stuffing in the described A component is one or more in red iron oxide, iron mica, zinc phosphate or the aluminium triphosphate.
5. according to the described anti-corrosion primer of claim 4, it is characterized in that: the thixotropic agent in the described A component is one or more in hydrogenated castor oil, organobentonite, aerosil, polyamide wax or the modified urea solution.
6. according to the described anti-corrosion primer of claim 5, it is characterized in that: the auxiliary agent in the described A component is one or more in wetting dispersing agent, defoamer, flow agent or the catalyzer.
7. according to the described anti-corrosion primer of claim 1, it is characterized in that: the isocyanic ester in the described B component is one or more in tolylene diisocyanate, diphenylmethanediisocyanate, isophorone diisocyanate, hexamethylene diisocyanate or the liquefied mdi.
8. according to the described anti-corrosion primer of claim 7, it is characterized in that: the hydroxyl value of the macromole hydroxyl polyol in the described B component is 28～112mgKOH/g;
The mixture that described micromolecular hydroxyl polyvalent alcohol in the described B component is dibasic alcohol and/or polyvalent alcohol, described polyvalent alcohol is one or more in glycerine, TriMethylolPropane(TMP), trimethylolethane, trihydroxyethyl isocyanuric ester or the tetramethylolmethane.
9. according to the described anti-corrosion primer of claim 8, it is characterized in that: control NCO weight percent content is 3～8% in isocyanic ester in the described B component and the hydroxyl polyol reaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103048904A CN101985540A (en) | 2009-07-28 | 2009-07-28 | Preservative primer used for ocean steel structure spray polyurea |
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| CN2009103048904A CN101985540A (en) | 2009-07-28 | 2009-07-28 | Preservative primer used for ocean steel structure spray polyurea |
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| CN105017937A (en) * | 2014-04-23 | 2015-11-04 | 江苏欣安新材料技术有限公司 | Active and anticorrosive water-based paint and preparation method thereof |
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| CN104263218A (en) * | 2014-09-04 | 2015-01-07 | 三棵树涂料股份有限公司 | Elastic epoxy polyurethane wood floor paint and preparation method thereof |
| CN104263218B (en) * | 2014-09-04 | 2017-02-01 | 三棵树涂料股份有限公司 | Elastic epoxy polyurethane wood floor paint and preparation method thereof |
| CN105367996A (en) * | 2015-10-27 | 2016-03-02 | 巢湖市国力航标器材有限公司 | Buoy roofing board with epoxy resin as base body and preparation method of buoy roofing board |
| CN110023360A (en) * | 2016-11-30 | 2019-07-16 | 日立化成株式会社 | Bi-component curable polyurethane system: compositions |
| CN110023360B (en) * | 2016-11-30 | 2022-03-04 | 昭和电工材料株式会社 | Two-component curable polyurethane composition |
| CN109535917A (en) * | 2017-08-16 | 2019-03-29 | 海洋化工研究院有限公司 | A kind of wind electricity blade protective primer and preparation method |
| CN111448271A (en) * | 2017-12-19 | 2020-07-24 | 日涂工业涂料有限公司 | Primer composition, primer coating film, method for forming primer coating film, and method for forming coating film |
| CN108840984A (en) * | 2018-07-09 | 2018-11-20 | 广州茵诺威化工有限公司 | Polyurethane modified epoxy resin and solvent-free PET film ink special and preparation method thereof |
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| CN110791187A (en) * | 2019-12-04 | 2020-02-14 | 沈阳化工研究院有限公司 | Water-based organic hybrid anticorrosive coating and preparation method thereof |
| CN113234377A (en) * | 2021-05-21 | 2021-08-10 | 徐州双聚环保新材料有限公司 | Solvent-free bottom-coating-free hole sealing spraying quick-drying elastomer polyurethane and III-type polyurea waterproof coating |
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Application publication date: 20110316 |