CN104845499A - Preparation method for waterborne epoxy paste paint - Google Patents
Preparation method for waterborne epoxy paste paint Download PDFInfo
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Abstract
The invention discloses a preparation method for waterborne epoxy paste paint. The waterborne epoxy paste paint is characterized by comprising a component A and a component B, wherein the component B comprises the following components in mass fraction: 60-70% of E51 epoxy resin and 30-40% of epoxy active diluent. The preparation process comprises the following steps: preparing hydrated magnesium silicate into 15% pre-prepared slurry, adding the hydrated magnesium silicate in water, and dispersing for 20-40 minutes; preparing organobentonite into 8% pre-prepared slurry, with a medium of distilled water, adding the organobentonite in water, and dispersing for 20-40 minutes; adding the distilled water, a cosolvent, a water-soluble dispersant, a neutralizer and the like and stirring; and by realizing on a dry plate, proportioning according to the mass ratio of 8: 1 of the component A to the component B, adjusting a spray viscosity, spraying, placing the dry plate and then detecting conventional performance. The product prepared by the method is fast in dry speed, good in adhesive force, high in solid content and excellent in construction performance; a wet film can achieve a thickness of 300mum in one time without sagging, the thickness is easy to form during the spraying, the corrosion resistance is excellent, and the salt spray resistance can achieve more than 2000 hours.
Description
Technical field
The present invention relates to paint preparation field, refer to the preparation method of the thick slurry paint of a kind of water-base epoxy especially.
Background technology
Under the concrete enforcement of new environmental law, various places reply haze improvement policy under, the excise increase income pressure under, people to the requirement of environmental protection and VOC discharge requirement more and more higher.But the material cost of existing market aqueous epoxy anticorrosive paint is all higher, this is also that aqueous epoxy anticorrosive paint commercially fails one of the bottleneck of widespread use energetically, in addition water-miscible paint is admittedly containing lower, disposable application thickness is lower, solve disposable application thickness time can bring certain damage to paint film appearance simultaneously, the build of 200 microns can be reached by disposable application thickness under how realizing not only keeping excellent outward appearance prerequisite, guarantee simultaneously the thick slurry of produced water-based paint originally accomplish minimum, key breakthrough part of the present invention that Here it is.
Summary of the invention
The present invention proposes the preparation method of the thick slurry paint of a kind of water-base epoxy, and product can be made to do, and speed is fast, sticking power is good, solids content is high, workability is excellent, the disposable thickness of wet film 300 μm not sagging.
Technical scheme of the present invention is achieved in that the preparation method of the thick slurry paint of a kind of water-base epoxy, comprise component A and component B, described component A comprises the following component according to massfraction meter: aqueous epoxy curing agent 10-15%, mica iron oxide red 30-35%, water aluminum-silver slurry 2-5%, phospho-molybdic acid zinc 10-15%, nano barium sulfate 10-15%, dispersion agent 0.3-0.5%, defoamer 0.2-0.3%, suds suppressor 0.2-0.3%, solubility promoter 2-5%, neutralizing agent 0.5-1%, wetting agent 0.1-0.3%, hydrated magnesium silicate 0.4-0.6%, organobentonite 0.3-0.5%, aerosil 0.2-0.4%, aqueous polyamide wax is starched: 2-4%, anti-sudden strain of a muscle rust agent 0.5-1%, ethylene-vinyl acetate copolymer 5-10%, distilled water 5-10%,
Described component B comprises the following component according to massfraction meter: E51 epoxy resin 60-70%, epoxy active diluent 30-40%;
Its preparation technology comprises:
Hydrated magnesium silicate is mixed with the pre-slurrying of 15% by step a., in water, add hydrated magnesium silicate, dispersion 20-40 minute;
Organobentonite is mixed with the pre-slurrying of 8% by step b., and its medium is distilled water, in water, add organobentonite, dispersion 20-40 minute;
Step c by distilled water, solubility promoter, aqueous dispersant, neutralizing agent, water-based suds suppressor, water-based defoamer, add and stir;
Steps d. add aerosil, aqueous polyamide wax slurry, the hydrated magnesium silicate slurry of 15%, the organobentonite slurry of 8% while stirring, dispersion 10-30 minute;
Step e. adds mica iron oxide red, phospho-molybdic acid zinc dispersion 10-30 minute while stirring, and grinds;
Step f. adds aqueous epoxy curing agent while stirring, adopt solubility promoter that water aluminum-silver slurry is fully wetting after aluminium-silver slurry, nano barium sulfate, stir 15-20 minute;
Step g. add aqueous wetting agent, the agent of anti-sudden strain of a muscle rust, ethylene-vinyl acetate copolymer, stir, then adopt neutralizing agent to carry out pH value and be adjusted to about 8;
Step h. component B technique is: after being mixed with epoxy active diluent by E51 epoxy resin, stirs;
Step I. dry plate realizes, and according to component A: the mass ratio of component B=8:1 carries out proportioning, adjustment spray viscosity, spraying, dry plate detects traditional performance after placing.
As preferably, the concrete preparation technology of described step a be hydrated magnesium silicate is mixed with 15% pre-slurrying, its medium is distilled water, in distilled water, slowly add hydrated magnesium silicate, adopts 800-100 rev/min of high speed dispersion 25-30 minute.
As preferably, the concrete preparation technology of described step b be organobentonite is mixed with 8% pre-slurrying, its medium is distilled water, in distilled water, slowly add organobentonite, adopts 800-100 rev/min of high speed dispersion 25-30 minute.
As preferably, the concrete preparation technology of described step c for by distilled water, solubility promoter, aqueous dispersant, neutralizing agent, water-based suds suppressor, water-based defoamer, add and adopt 300-400 rev/min to stir 5-10 minute.
As preferably, the concrete preparation technology of described steps d is that limit adopts 300-400 rev/min of stirring limit to add aerosil, aqueous polyamide wax slurry, the hydrated magnesium silicate slurry of 15%, the organobentonite slurry of 8%, adopts 600-800 rev/min to disperse 15-20 minute.
As preferably, the concrete preparation technology of described step e be limit adopt 300-400 rev/min to stir limit adds mica iron oxide red, phospho-molybdic acid zinc adopts 600-800 rev/min of dispersion 15-20 minute, adopting sand mill to be ground to fineness is 50 microns
As preferably, the concrete preparation technology of described step f be limit adopt 300-400 rev/min stir limit add aqueous epoxy curing agent, adopt solubility promoter that water aluminum-silver slurry is fully wetting after aluminium-silver slurry, nano barium sulfate, adopts 600-800 rev/min of stirring 10-15 minute
As preferably, the concrete preparation technology of described step g is for adding aqueous wetting agent, the agent of anti-sudden strain of a muscle rust, ethylene-vinyl acetate copolymer, and adopts 600-800 rev/min to stir 5-10 minute, employing neutralizing agent carries out pH value and is adjusted to about 8
As preferably, the concrete preparation technology of component B of described step h is: after being mixed with epoxy active diluent by E51 epoxy resin, adopts 400-600 rev/min to stir 5-10 minute.
As preferably, the dry plate of described step I realizes concrete preparation technology and is: according to component A: the mass ratio of component B=8:1 carries out proportioning, deionized-distilled water is adopted to carry out the adjustment of spray viscosity, spray viscosity is adjusted to 20-40S (NK-2 cup), spraying layer 2-3, dry plate is placed in 25 DEG C of thermostat containers and was detected traditional performance from dry 48 hours.
Compared with prior art, the invention has the advantages that: present invention utilizes solvent-free epoxy resin directly can carry out emulsification by water-based emulsion type epoxy hardener scene, thus guarantee minimumization of cost, apply the netted result that " organobentonite-hydrated magnesium silicate-aqueous polyamide wax slurry-aerosil " is built cleverly simultaneously, fully whole paint film is combined closely, thus reach the object of disposable thick painting not sagging.This kind of product has that dry speed is fast, sticking power is good, solids content is high, workability is excellent, and the disposable thickness of wet film 300 μm not sagging, easily plays thickness during spraying, and antiseptic property is excellent, and salt spray resistance can reach more than 2000 hours.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The raw material that following examples adopt is as follows:
Aqueous epoxy curing agent (8545 U.S.'s Hexion)
Mica iron oxide red (600 order mica iron oxide red section dimerization work)
Water aluminum-silver slurry (XH330 Shenzhen Xin Hangwang)
Phospho-molybdic acid zinc (Jiangsu Wanda science and technology)
Nano barium sulfate (BS80 Beijing gold zebra)
Dispersion agent (PX4585 BASF)
Defoamer (2550 BASF)
Suds suppressor (this shield of BL-100 Suzhou hundred)
Wetting agent (57 this chemistry of sea inscription)
Hydrated magnesium silicate (AD sea ease chemistry)
Aerosil (N20 ring fine jade chemical industry)
Solubility promoter (ethylene glycol monobutyl ether China Petrochemical Industry)
Neutralizing agent (this chemistry of DMAE sea inscription)
Anti-sudden strain of a muscle rust agent (river, ZT-709 sea chemical industry)
Aqueous polyamide wax slurry (it is prosperous that AQH-800 founds Hua)
E51 epoxy resin (128 U.S.'s Hexion)
Epoxy active diluent (XY629 Anhui is newly far away)
Ethylene-vinyl acetate copolymer (EVA 40W Du Pont)
Table 1: the component A paint formula proportioning of embodiment 1 ~ embodiment 6
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Aqueous epoxy curing agent | 15 | 18 | 20 | 20 | 15 | 20 |
| Mica iron oxide red | 30 | 35 | 30 | 30 | 30 | 30 |
| Phospho-molybdic acid zinc | 15 | 10 | 10 | 15 | 10 | 10 |
| Nano barium sulfate | 20 | 15 | 15 | 10 | 18 | 10 |
| Water aluminum-silver slurry | 2 | 4 | 5 | 3 | 2 | 3 |
| Hydrated magnesium silicate | 0.4 | 0.5 | 0.4 | 0.6 | 0.4 | 0.6 |
| Water-based organobentonite | 0.3 | 0.4 | 0.5 | 0.5 | 0.3 | 0.5 |
| Aerosil | 0.2 | 0.3 | 0.2 | 0.4 | 0.2 | 0.4 |
| Aqueous polyamide wax is starched | 2 | 3 | 3 | 4 | 2 | 4 |
| Dispersion agent | 0.3 | 0.5 | 0.4 | 0.4 | 0.3 | 0.4 |
| Suds suppressor | 0.2 | 0.3 | 0.3 | 0.3 | 0.2 | 0.3 |
| Defoamer | 0.3 | 0.3 | 0.3 | 0.2 | 0.3 | 0.2 |
| Neutralizing agent | 0.5 | 0.7 | 1 | 1 | 0.5 | 1 |
| Wetting agent | 0.2 | 0.3 | 0.1 | 0.2 | 0.2 | 0.2 |
| The agent of anti-sudden strain of a muscle rust | 1 | 0.5 | 0.7 | 1 | 1 | 1 |
| Solubility promoter | 3 | 4 | 5 | 5 | 3 | 5 |
| Distilled water | 9.6 | 7.2 | 8.1 | 8.4 | 6.6 | 8.4 |
| Ethylene-vinyl acetate copolymer | --- | --- | --- | --- | 10 | 5 |
| Add up to | 100 | 100 | 100 | 100 | 100 | 100 |
Concrete preparation preparation method is:
1, hydrated magnesium silicate is mixed with the pre-slurrying of 15%, its medium is distilled water, in distilled water, slowly add hydrated magnesium silicate, adopts 800-100 rev/min of high speed dispersion 25-30 minute;
2, organobentonite is mixed with the pre-slurrying of 8%, its medium is distilled water, in distilled water, slowly add organobentonite, adopts 800-100 rev/min of high speed dispersion 25-30 minute;
3, by distilled water, solubility promoter, aqueous dispersant, neutralizing agent, water-based suds suppressor, water-based defoamer, add adopt 300-400 rev/min stir 5-10 minute;
4, limit adopts 300-400 rev/min to add aerosil, aqueous polyamide wax slurry, the hydrated magnesium silicate slurry of 15%, the organobentonite slurry of 8% while stirring, adopts 600-800 rev/min to disperse 15-20 minute,
5, limit adopts 300-400 rev/min to add mica iron oxide red, phospho-molybdic acid zinc employing 600-800 rev/min of dispersion 15-20 minute while stirring, and adopting sand mill to be ground to fineness is 50 microns.
6, limit adopt 300-400 rev/min to add aqueous epoxy curing agent while stirring, adopt solubility promoter that water aluminum-silver slurry is fully wetting after aluminium-silver slurry, nano barium sulfate, adopts 600-800 rev/min of stirring 10-15 minute;
7, add aqueous wetting agent, the agent of anti-sudden strain of a muscle rust, ethylene-vinyl acetate copolymer, adopt 600-800 rev/min to stir 5-10 minute, adopt neutralizing agent to carry out pH value and be adjusted to about 8.
Performance test
Test method is: by the proportioning paint of A:B=8:1, deionized-distilled water is adopted to carry out being diluted to spray viscosity (23-40S, NK-2 cup), standard-bred mouth iron plate carries out phosphatization or grinding process, on tinplate sheet, gauge control is at 20-30 μm, after 48 hours do solid work completely, do all-round property testing, salt spray resistance test dry plate gauge control, at 80-100 μm, does salt spray resistance test after 7 days do solid work completely.
Time of drying, over-all properties and granted patent CN 101104770A contrasted according to GB/T1728, sticking power according to GB/T1720, impact according to GB/T1732, toughness according to GB/T6742, hardness according to GB/T6739, water tolerance according to GB/T1733, solids content test according to GB/T1725, freeze-thaw resistance according to GB/T9268, resistance to neutral salt spray according to GB/T1771.
Table 2: performance comparison test result
Directly emulsification can be carried out by water-based emulsion type epoxy hardener scene by make use of solvent-free epoxy resin, proved by test, disposable application thickness can reach more than 275 microns completely, and possess very excellent chemical resistance and salt spray resistance, after introducing ethylene-vinyl acetate copolymer in formula, very large lifting is all had to the freeze-thaw resistance of paint film, acid resistance, alkali resistance and resistance to sodium-chlor, and in disposable application thickness, play very large help equally.All over-all propertieies all contrast than patent CN 101104770A is obviously eager to excel a lot, is a low VOC discharge and high performance heavy sizing aqueous epoxy-based lacquers.
Present invention utilizes solvent-free epoxy resin and directly can carry out emulsification by water-based emulsion type epoxy hardener scene, thus guarantee minimumization of cost, apply the netted result that " organobentonite-hydrated magnesium silicate-aqueous polyamide wax slurry-aerosil " is built cleverly simultaneously, fully whole paint film is combined closely, thus reach the object of disposable thick painting not sagging.This kind of product has that dry speed is fast, sticking power is good, solids content is high, workability is excellent, and the disposable thickness of wet film 300 μm not sagging, easily plays thickness during spraying, and antiseptic property is excellent, and salt spray resistance can reach more than 2000 hours.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the preparation method of the thick slurry paint of water-base epoxy, it is characterized in that: comprise component A and component B, described component A comprises the following component according to massfraction meter: aqueous epoxy curing agent 10-15%, mica iron oxide red 30-35%, water aluminum-silver slurry 2-5%, phospho-molybdic acid zinc 10-15%, nano barium sulfate 10-15%, dispersion agent 0.3-0.5%, defoamer 0.2-0.3%, suds suppressor 0.2-0.3%, solubility promoter 2-5%, neutralizing agent 0.5-1%, wetting agent 0.1-0.3%, hydrated magnesium silicate 0.4-0.6%, organobentonite 0.3-0.5%, aerosil 0.2-0.4%, aqueous polyamide wax is starched: 2-4%, anti-sudden strain of a muscle rust agent 0.5-1%, ethylene-vinyl acetate copolymer 5-10%, distilled water 5-10%,
Described component B comprises the following component according to massfraction meter: E51 epoxy resin 60-70%, epoxy active diluent 30-40%;
Its preparation technology comprises:
Hydrated magnesium silicate is mixed with the pre-slurrying of 15% by step a., in water, add hydrated magnesium silicate, dispersion 20-40 minute;
Organobentonite is mixed with the pre-slurrying of 8% by step b., and its medium is distilled water, in water, add organobentonite, dispersion 20-40 minute;
Step c by distilled water, solubility promoter, aqueous dispersant, neutralizing agent, water-based suds suppressor, water-based defoamer, add and stir;
Steps d. add aerosil, aqueous polyamide wax slurry, the hydrated magnesium silicate slurry of 15%, the organobentonite slurry of 8% while stirring, dispersion 10-30 minute;
Step e. adds mica iron oxide red, phospho-molybdic acid zinc dispersion 10-30 minute while stirring, and grinds;
Step f. adds aqueous epoxy curing agent while stirring, adopt solubility promoter that water aluminum-silver slurry is fully wetting after aluminium-silver slurry, nano barium sulfate, stir 15-20 minute;
Step g. add aqueous wetting agent, the agent of anti-sudden strain of a muscle rust, ethylene-vinyl acetate copolymer, stir, then adopt neutralizing agent to carry out pH value and be adjusted to about 8;
Step h. component B technique is: after being mixed with epoxy active diluent by E51 epoxy resin, stirs;
Step I. dry plate realizes, and according to component A: the mass ratio of component B=8:1 carries out proportioning, adjustment spray viscosity, spraying, dry plate detects traditional performance after placing.
2. the preparation method of the thick slurry paint of water-base epoxy according to claim 1, it is characterized in that: the concrete preparation technology of described step a be hydrated magnesium silicate is mixed with 15% pre-slurrying, its medium is distilled water, in distilled water, slowly add hydrated magnesium silicate, adopt 800-100 rev/min of high speed dispersion 25-30 minute.
3. the preparation method of the thick slurry paint of water-base epoxy according to claim 2, it is characterized in that: the concrete preparation technology of described step b be organobentonite is mixed with 8% pre-slurrying, its medium is distilled water, in distilled water, slowly add organobentonite, adopt 800-100 rev/min of high speed dispersion 25-30 minute.
4. the preparation method of the thick slurry paint of water-base epoxy according to claim 3, is characterized in that: the concrete preparation technology of described step c is by distilled water, solubility promoter, aqueous dispersant, neutralizing agent, water-based suds suppressor, water-based defoamer, adds employing 300-400 rev/min stirring 5-10 minute.
5. the preparation method of the thick slurry paint of water-base epoxy according to claim 4, it is characterized in that: the concrete preparation technology of described steps d is that limit adopts 300-400 rev/min of stirring limit to add aerosil, aqueous polyamide wax slurry, the hydrated magnesium silicate slurry of 15%, the organobentonite slurry of 8%, adopts 600-800 rev/min to disperse 15-20 minute.
6. the preparation method of the thick slurry paint of water-base epoxy according to claim 5, it is characterized in that: the concrete preparation technology of described step e is that limit adopts 300-400 rev/min of stirring limit to add mica iron oxide red, phospho-molybdic acid zinc employing 600-800 rev/min of dispersion 15-20 minute, and adopting sand mill to be ground to fineness is 50 microns.
7. the preparation method of the thick slurry paint of water-base epoxy according to claim 6, it is characterized in that: the concrete preparation technology of described step f be limit adopt 300-400 rev/min stir limit add aqueous epoxy curing agent, adopt solubility promoter that water aluminum-silver slurry is fully wetting after aluminium-silver slurry, nano barium sulfate, adopts 600-800 rev/min of stirring 10-15 minute.
8. the preparation method of the thick slurry paint of water-base epoxy according to claim 7, it is characterized in that: the concrete preparation technology of described step g is for adding aqueous wetting agent, the agent of anti-sudden strain of a muscle rust, ethylene-vinyl acetate copolymer, adopt 600-800 rev/min to stir 5-10 minute, adopt neutralizing agent to carry out pH value and be adjusted to about 8.
9. the preparation method of the thick slurry paint of water-base epoxy according to claim 1, it is characterized in that: the concrete preparation technology of component B of described step h is: after being mixed with epoxy active diluent by E51 epoxy resin, adopt 400-600 rev/min to stir 5-10 minute.
10. according to the preparation method of the thick slurry paint of the arbitrary described water-base epoxy of claim 1 or 8 or 9, it is characterized in that: the dry plate of described step I realizes concrete preparation technology and is: according to component A: the mass ratio of component B=8:1 carries out proportioning, deionized-distilled water is adopted to carry out the adjustment of spray viscosity, spray viscosity is adjusted to 20-40S (NK-2 cup), spraying layer 2-3, dry plate is placed in 25 DEG C of thermostat containers and was detected traditional performance from dry 48 hours.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105086760A (en) * | 2015-08-20 | 2015-11-25 | 成都拜迪新材料有限公司 | Preparation method of waterborne epoxy graphene antiseptic primer |
| CN105505127A (en) * | 2016-01-28 | 2016-04-20 | 赵栋 | High-temperature-resistant zinc-rich anti-corrosion coating and preparation method thereof |
| CN105694664A (en) * | 2016-01-28 | 2016-06-22 | 赵栋 | Polyaniline-modified zinc-containing anti-corrosive coating and preparation method thereof |
| JP2017101232A (en) * | 2015-11-25 | 2017-06-08 | 株式会社リコー | Ink, recording method, recording device and ink accommodating container |
| CN108795248A (en) * | 2018-05-07 | 2018-11-13 | 河北晨阳工贸集团有限公司 | Sealing wax suit and its preparation method and application |
| CN115651481A (en) * | 2022-11-03 | 2023-01-31 | 北京北方车辆集团有限公司 | Water-based two-component epoxy thick-paste paint for anticorrosive coating and preparation method thereof |
| CN116004077A (en) * | 2022-12-06 | 2023-04-25 | 浙江工业大学 | EVA modified epoxy resin fireproof coating and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104140738A (en) * | 2014-05-20 | 2014-11-12 | 成都拜迪新材料有限公司 | Preparation method of waterborne primer, intermediate coat and finishing coat for railway bearing system |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104140738A (en) * | 2014-05-20 | 2014-11-12 | 成都拜迪新材料有限公司 | Preparation method of waterborne primer, intermediate coat and finishing coat for railway bearing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105086760A (en) * | 2015-08-20 | 2015-11-25 | 成都拜迪新材料有限公司 | Preparation method of waterborne epoxy graphene antiseptic primer |
| CN105086760B (en) * | 2015-08-20 | 2017-12-05 | 成都拜迪新材料有限公司 | The preparation method of water-base epoxy graphene anti-corrosion primer |
| JP2017101232A (en) * | 2015-11-25 | 2017-06-08 | 株式会社リコー | Ink, recording method, recording device and ink accommodating container |
| CN105505127A (en) * | 2016-01-28 | 2016-04-20 | 赵栋 | High-temperature-resistant zinc-rich anti-corrosion coating and preparation method thereof |
| CN105694664A (en) * | 2016-01-28 | 2016-06-22 | 赵栋 | Polyaniline-modified zinc-containing anti-corrosive coating and preparation method thereof |
| CN108795248A (en) * | 2018-05-07 | 2018-11-13 | 河北晨阳工贸集团有限公司 | Sealing wax suit and its preparation method and application |
| CN115651481A (en) * | 2022-11-03 | 2023-01-31 | 北京北方车辆集团有限公司 | Water-based two-component epoxy thick-paste paint for anticorrosive coating and preparation method thereof |
| CN116004077A (en) * | 2022-12-06 | 2023-04-25 | 浙江工业大学 | EVA modified epoxy resin fireproof coating and preparation method thereof |
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