CN105086774A - Preparation method of low-VOC (volatile organic compound) composite coating applicable to field of heavy corrosion resistance - Google Patents
Preparation method of low-VOC (volatile organic compound) composite coating applicable to field of heavy corrosion resistance Download PDFInfo
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Abstract
The invention provides a preparation method of a low-VOC (volatile organic compound) composite coating applicable to the field of heavy corrosion resistance, which comprises a preparation method of a low-VOC solvent-free epoxy zinc-rich primer, a preparation method of a low-VOC solvent-free epoxy mica iron intermediate paint and a preparation method of a low-VOC polyurea corrosion-resistant finish paint. The low-VOC solvent-free epoxy zinc-rich primer comprises a component A and a component B. The low-VOC solvent-free epoxy mica iron intermediate paint comprises a component C and a component D. The low-VOC polyurea corrosion-resistant finish paint comprises a component E and a component F. The analysis on the properties through primer, intermediate paint and finish paint single-layer testing and the composite layer properties through illustration testing indicates that the composite coating prepared by the method is very effective when being used in the field of heavy corrosion resistance, can completely satisfy the requirements in the aspect of environmental protection, overcomes defect that the water-based paint can not satisfy and achieve the market requirements, has very excellent comprehensive properties, and greatly exceeds the expected corrosion resistance requirements.
Description
Technical field
The present invention relates to painting field, refer to a kind of preparation method being applied to the low VOC compound coating in heavy antisepsis field especially.
Background technology
Along with country is more and more stricter to environmental requirement, country has successively put into effect new " environmental law ", " excise ", " effluent charge ", and phase Yingcheng City puts into effect production and the use of forbidding oil-based paints in order to administer PM2.5.Thus give water-miscible paint, the solvent-free coating of zero VOC discharge that waits has welcome spring, but the construction intrinsic for water-miscible paint and performance deficiency cannot solve at present, as: enter winter, the nearly all temperature in the north is all subzero, there is the phenomenon of freezing in water-miscible paint, cannot construct at all, and in south, temperature is too low, under the environment that humidity is excessive, water-miscible paint can not parch for a long time, have a strong impact on production efficiency and production friendship phase, and very easily there is sagging, shrinkage cavity, the morbid state such as pin hole, and how to make water-based reach more than 150 microns (builds) at disposable film forming thickness, this is the problem that current water-miscible paint still needs to overcome.When country goes into overdrive further to VOC discharge, water-miscible paint still cannot be satisfied with the market requirement, coating industry develops new coating to be satisfied with the market requirement by needing.
Summary of the invention
The present invention proposes a kind of preparation method being applied to the low VOC compound coating in heavy antisepsis field, and the compound coating of preparation has the over-all propertieies such as very excellent application property, the feature of environmental protection, chemical resistant properties, preservative property, weathering resistance.
Technical scheme of the present invention is achieved in that a kind of preparation method being applied to the low VOC compound coating in heavy antisepsis field, comprise the preparation method of low VOC non-solvent epoxy zinc rich primer, the low preparation method of VOC non-solvent epoxy cloud iron intermediate coat and the preparation method of low VOC polyurea anti-corrosion finish paint
Described low VOC non-solvent epoxy zinc rich primer comprises component A and component B, and component A comprises the following component according to massfraction meter: E51 epoxy resin 10-15%, epoxy active diluent 13-19%, modified resin 3-5%, zinc powder 60-70%, environmental protection zinc phosphate 5-10%, salt spray resistance auxiliary agent 0.5-1%, dispersion agent 0.2-0.3%, polyamide wax powder 0.5-0.8%, aerosil 0.2-0.3%, defoamer 0.1-0.2%, flow agent 0.1-0.2%, hydrocarbon resin 3-5%; B component formula for a product is the epoxy hardener of 100%;
Its preparation method comprises the following steps:
Epoxy resin, epoxy active diluent, dispersion agent, polyamide wax powder add in production cylinder by step a., adopt 800-1000 rev/min of high speed dispersion 30-40 minute, guarantee that high speed dispersion temperature reaches 55-65 DEG C;
Step b. adopts 600-800 rev/min and adds modified resin, aerosil, environmental protection zinc phosphate, zinc powder while stirring, and adopt 800-1000 rev/min of high speed dispersion 20-30 minute, fineness controls within 80 microns;
Step c adopts 600-800 rev/min and adds defoamer, flow agent, salt spray resistance auxiliary agent while stirring, adopts 600-800 rev/min to stir 10-15 minute;
Steps d. add hydrocarbon resin, adopt 600-800 rev/min to stir 10-15 minute;
Step e. dry plate realizes: A:B=10:1 ratio mixed, epoxy active diluent is adopted to carry out the adjustment of working viscosity, brushing or roller coat viscosity are adjusted to 50-60S (T-4 cup,-20 DEG C), the dry plate film thickness of chemical resistance test, salt spray resistance, cold-hot circularity test controls at 90-100 μm, traditional performance test dry plate paint adopts spraying method to realize, spray viscosity controls to control at 20-30 micron at 25-30S (T-4 cup ,-20 DEG C) film thickness;
Described low VOC non-solvent epoxy cloud iron intermediate coat comprises component C and component D, and component C comprises the following component according to massfraction meter: E51 epoxy resin: 15-20%, epoxy active diluent: 13-19%, modified resin: 5-10%, micaceous iron oxide gray: 35-40%, process white: 5-10%, sericite: 8-10%, Zinic stearas: 2-5%, dispersion agent: 0.3-0.5%, polyamide wax powder: 0.5-0.8%, aerosil: 0.2-0.3%, defoamer: 0.2-0.3%, flow agent: 0.1-0.3%, hydrocarbon resin 3-5%; D component product formula is the epoxy hardener of 100%;
Its preparation method comprises the following steps:
Epoxy resin, epoxy active diluent, dispersion agent, polyamide wax powder add in production cylinder by step a., adopt 800-1000 rev/min of high speed dispersion 30-40 minute, guarantee that high speed dispersion temperature reaches 55-65 DEG C;
Step b. adopts 600-800 rev/min and adds modified resin, aerosil, environmental protection zinc phosphate, zinc powder while stirring, and adopt 800-1000 rev/min of high speed dispersion 20-30 minute, fineness controls within 80 microns;
Step c adopts 600-800 rev/min and adds defoamer, flow agent, salt spray resistance auxiliary agent while stirring, adopts 600-800 rev/min to stir 10-15 minute;
Steps d. add hydrocarbon resin, adopt 600-800 rev/min to stir 10-15 minute;
Step e. dry plate realizes: A:B=10:1 ratio mixed, epoxy active diluent is adopted to carry out the adjustment of working viscosity, brushing or roller coat viscosity are adjusted to 50-60S (T-4 cup,-20 DEG C), the dry plate film thickness of chemical resistance test, salt spray resistance, cold-hot circularity test controls at 90-100 μm, traditional performance test dry plate paint adopts spraying method to realize, spray viscosity controls to control at 20-30 micron at 25-30S (T-4 cup ,-20 DEG C) film thickness;
Described low VOC polyurea anti-corrosion finish paint comprises component E and component F, and component E comprises the following component according to massfraction meter: polyaspartic ester 55-65%, Rutile type Titanium Dioxide 20-25%, carbon black 0.5-1%, nano barium sulfate 5-10%, dispersion agent 0.3-0.5%, polyamide wax powder 0.3-0.5%, aerosil 0.2-0.3%, defoamer 0.1-0.2%, flow agent 0.1-0.2%, poly-methyl-propyl methyl esters 3-5%, mixed solvent 4-8%; F component product formula is the isocyanate resin of 100%;
Its preparation method comprises the following steps:
Polyaspartic ester, dispersion agent, polyamide wax powder, mixed solvent add in production cylinder by step a., and adopt 800-1000 rev/min of high speed dispersion 30-40 minute, temperature during high speed dispersion maintains 55-65 DEG C;
Step b. adopts 600-800 rev/min and adds Rutile type Titanium Dioxide, carbon black, aerosil, nano barium sulfate, defoamer while stirring, adopts 800-1000 rev/min of high speed dispersion 10-15 minute, adopts horizontal sand mill that fineness is ground to 20 microns;
Step c adds flow agent, poly-methyl-propyl methyl esters, adopts 600-800 rev/min to stir 10-15 minute;
Steps d. dry plate realizes: E:F=3:1 ratio mixed, mixed solvent is adopted to carry out the adjustment of spray viscosity, spray viscosity is adjusted to 30-40S (25 DEG C, T-4 cup), spraying layer 2-3, the dry plate film thickness of chemical resistance test, salt spray resistance, weather resistance test controls at 90-100 μm, and traditional performance test dry plate film thickness controls at 20-30 micron.
As preferably, described E51 epoxy resin comprises all E51 based epoxy resins.
As preferably, described epoxy active diluent includes but not limited to that butyl shrinks sweet ether, alcohol glycidyl ether, butylphenyl glycidyl ether, cardanol glycidyl ether, trimethylolpropane polyglycidylether, 1,6-hexanediol diglycidyl ether, BDDE, polypropylene glycol diglycidyl ether.
As preferably, described epoxy hardener includes but not limited to phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine epoxy hardener.
As preferably, described mixed solvent comprises benzene kind solvent, esters solvent, ketones solvent, varsol etc. and joins according to the ratio of 20:50:15:15.
Compared with prior art; the invention has the advantages that: the preparation method that the invention provides a kind of priming paint, intermediate coat and the finish paint that are applied to heavy antisepsis field; the field of this patent protection contains different field industries such as being applied to railway bearing, railroad bridge, railway locomotive, highway bearing, highway bridge, petroleum storage tank, petroleum pipe line, natural gas line, oil equipment, has the over-all propertieies such as very excellent application property, the feature of environmental protection, chemical resistant properties, preservative property, weathering resistance.Compound coating prepared by the method provides the standard that a kind of normal non-solvent epoxy system is discharged to reach low VOC, this coating VOC quantity discharged of making controls completely within 50mg/L, no matter and enter the winter in the north or southern wet season, capital has very excellent drying property, and disposable thickness can reach more than 200 microns (dry films) not sagging simultaneously.This product accords with each generic request that national environmental protection proposes completely, and to water quality, soil all without any pollution.
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.
One, the preparation method of low VOC non-solvent epoxy zinc rich primer
Raw material is as follows:
E51 epoxy resin (618 U.S. step figure)
Modified resin (2602 xylene formaldehyde resin Jiangsu Specialty Chemical)
Epoxy active diluent (XY692 Anhui is newly far away)
Zinc powder (600 order zinc powder Yangzhou are two contains)
Environmental protection zinc phosphate (PZ20 ring fine jade chemical industry)
Dispersion agent (32500 road Bo Run)
Defoamer (625YCK)
Flow agent (306BYK)
Salt spray resistance auxiliary agent (this is engraved in 1501 seas)
Aerosil (N200 ring fine jade chemical industry)
Polyamide wax powder (LV ring fine jade chemical industry)
Hydrocarbon resin (DI Johanna Lüttge)
Pnenolic aldehyde amine hardener (T-31 Jiangsu three wood)
Epoxy active diluent: comprise butyl and to shrink sweet ether, alcohol glycidyl ether, butylphenyl glycidyl ether, cardanol glycidyl ether, trimethylolpropane polyglycidylether, 1, the epoxy active diluent that 6-hexanediol diglycidyl ether, BDDE, polypropylene glycol diglycidyl ether etc. are dissimilar;
Epoxy hardener: phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine epoxy hardener etc. all belong to the epoxy hardener protection domain of this patent of invention;
Table 1: embodiment 1 ~ embodiment 6 formulation ratio
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| E51 epoxy resin | 10 | 12 | 13 | 15 | 10 | 15 |
| Xylene formaldehyde resin | 5 | 4 | 3 | 3 | 5 | 3 |
| Epoxy active diluent | 7.7 | 8.9 | 11.6 | 6.5 | 4.7 | 4.5 |
| Dispersion agent | 0.2 | 0.3 | 0.3 | 0.3 | 0.2 | 0.3 |
| Zinc powder | 70 | 65 | 60 | 65 | 70 | 62 |
| Environmental protection zinc phosphate | 5 | 8 | 10 | 8 | 5 | 8 |
| Defoamer | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.2 |
| Flow agent | 0.2 | 0.2 | 0.1 | 0.1 | 0.2 | 0.1 |
| Polyamide wax powder | 0.8 | 0.7 | 0.5 | 0.6 | 0.8 | 0.6 |
| Aerosil | 0.2 | 0.3 | 0.3 | 0.3 | 0.2 | 0.3 |
| Salt spray resistance auxiliary agent | 0.8 | 0.5 | 1 | 1 | 0.8 | 1 |
| Hydrocarbon resin | -- | -- | -- | -- | 3 | 5 |
| Add up to | 100 | 100 | 100 | 100 | 100 | 100 |
Preparation method is:
1, epoxy resin, epoxy active diluent, dispersion agent, polyamide wax powder are added in production cylinder, adopt 800-1000 rev/min of high speed dispersion 30-40 minute, guarantee that high speed dispersion temperature reaches 55-65 DEG C;
2, adopt 600-800 rev/min and add modified resin, aerosil, environmental protection zinc phosphate, zinc powder while stirring, adopt 800-1000 rev/min of high speed dispersion 20-30 minute, fineness controls within 80 microns;
3, adopt 600-800 rev/min and add defoamer, flow agent, salt spray resistance auxiliary agent while stirring, adopt 600-800 rev/min to stir 10-15 minute;
4, add hydrocarbon resin, adopt 600-800 rev/min to stir 10-15 minute.
Dry plate realizes:
Performance test
Test method: A:B=10:1 ratio is mixed, epoxy active diluent is adopted to carry out the adjustment of working viscosity, spray viscosity is adjusted to 30-40S (T-4 cup, 25 DEG C), the dry plate film thickness of chemical resistance test, salt spray resistance, cold-hot circularity test controls at 90-100 μm, traditional performance test dry plate paint adopts spraying method to realize, and spray viscosity controls to control at 20-30 micron at 25-30S (T-4 cup, 25 DEG C) film thickness.Rear test chemical resistant properties, salt spray resistance, cold-hot circularity test are done solid work in slaking for 7 days completely.
Dry to perform according to GB/T1728, sticking power perform according to GB/T5210, impact perform according to GB/T1732, toughness performs according to GB/T1731, non-volatile matter performs according to GB/T1725, chemical resistance performs according to GB/T9274, the test of resistance to neutral salt spray performs according to GB/T1771, thickness performs according to GB/T13452.2, all properties all carries out contrast test with granted patent CN102533052A " a kind of solvent-free type epoxy zinc rich primer and preparation method thereof " performance.
Table 2: embodiment 1 ~ 6 and CN102533052A performance comparison test result
Product performance: this product has very excellent application property, quick-drying, very easily plays thickness, one-off construction build can reach more than 200 microns, antiseptic property is very excellent, and salt spray resistance can reach more than 3000 hours, has very excellent chemical resistance simultaneously.
Two, the preparation method of low VOC non-solvent epoxy cloud iron intermediate coat
Epoxy active diluent: comprise butyl and to shrink sweet ether, alcohol glycidyl ether, butylphenyl glycidyl ether, cardanol glycidyl ether, trimethylolpropane polyglycidylether, 1, the epoxy active diluent that 6-hexanediol diglycidyl ether, BDDE, polypropylene glycol diglycidyl ether etc. are dissimilar;
Epoxy hardener: phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine epoxy hardener etc. all belong to the epoxy hardener protection domain of this patent of invention;
Raw material is as follows:
E51 epoxy resin (618 U.S. step figure)
Modified resin (2602 xylene formaldehyde resin Jiangsu Specialty Chemical)
Epoxy active diluent (XY692 Anhui is newly far away)
Process white (3000 order barium sulfate Shanghai jump river)
Micaceous iron oxide gray (800 order micaceous iron oxide gray Chengdu sections gather)
Sericite (A4 Chuzhou ten thousand bridge)
Dispersion agent (9850 favours are just capable)
Defoamer (6800 favours are just capable)
Flow agent (466 favours are just capable)
Aerosil (N200 ring fine jade chemical industry)
Zinic stearas (the prosperous industry in TV Chengdu)
Polyamide wax powder (LV ring fine jade chemical industry)
Hydrocarbon resin (DI Johanna Lüttge)
Pnenolic aldehyde amine hardener (T-31 Jiangsu three wood)
Table 3: embodiment 7 ~ embodiment 12 formulation ratio
| Embodiment 7 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | |
| E51 epoxy resin | 15 | 16 | 18 | 20 | 20 | 15 |
| Xylene formaldehyde resin | 10 | 8 | 6 | 5 | 5 | 10 |
| Epoxy active diluent | 18.3 | 18.3 | 17.1 | 14.4 | 13.4 | 13.3 |
| Dispersion agent | 0.3 | 0.4 | 0.5 | 0.3 | 0.3 | 0.3 |
| Micaceous iron oxide gray | 40 | 35 | 35 | 40 | 38 | 40 |
| Process white | 5 | 8 | 10 | 6 | 6 | 5 |
| Defoamer | 0.2 | 0.3 | 0.2 | 0.3 | 0.3 | 0.2 |
| Flow agent | 0.1 | 0.2 | 0.2 | 0.3 | 0.3 | 0.1 |
| Polyamide wax powder | 0.8 | 0.6 | 0.7 | 0.5 | 0.5 | 0.8 |
| Aerosil | 0.3 | 0.2 | 0.3 | 0.2 | 0.2 | 0.3 |
| Sericite | 8 | 10 | 8 | 8 | 8 | 8 |
| Zinic stearas | 2 | 3 | 4 | 5 | 5 | 2 |
| Hydrocarbon resin | -- | -- | -- | -- | 3 | 5 |
| Add up to | 100 | 100 | 100 | 100 | 100 | 100 |
Preparation method is:
1, epoxy resin, epoxy active diluent, dispersion agent, polyamide wax powder are added in production cylinder, adopt 800-1000 rev/min of high speed dispersion 30-40 minute, guarantee that high speed dispersion temperature reaches 55-65 DEG C;
2, adopt 600-800 rev/min and add modified resin, micaceous iron oxide gray, process white, sericite, Zinic stearas, aerosil while stirring, adopt 800-1000 rev/min of high speed dispersion 10-15 minute, adopt horizontal sand mill that fineness is ground to 50 microns;
3, adopt 600-800 rev/min and add defoamer, flow agent while stirring, adopt 800-1000 rev/min to stir 10-15 minute;
4, add hydrocarbon resin, adopt 600-800 rev/min to stir 10-15 minute.
Performance test
Test method: C:D=5:1 ratio is mixed, epoxy active diluent is adopted to carry out being diluted to spray viscosity (30-40S, 25 DEG C, T-4 cup), roller coat viscosity (60-80S, 25 DEG C, T-4 cup), the dry plate film thickness of the test of chemical resistance, salt spray resistance, cold-hot circularity test controls at 90-100 μm, and traditional performance test panel gauge control is at 20-30 μm.Rear test chemical resistant properties, salt spray resistance, cold-hot circularity test are done solid work in slaking for 7 days completely.
Table 4: embodiment 7 ~ 12 the performance test results
Product performance: this product has very excellent application property, quick-drying, very easily plays thickness, one-off construction build can reach more than 200 microns, antiseptic property is very excellent, and salt spray resistance can reach more than 2000 hours, and has very excellent grinability.
Three, the preparation method of low VOC polyurea anti-corrosion finish paint
Embodiment
Raw material is as follows:
Polyaspartic ester (F524 flies Yang Xin's material)
Rutile type Titanium Dioxide (CR-501 Jinzhou titanium industry)
Carbon black (MA-100 Mitsubishi)
Nano barium sulfate (BS-80 Beijing Golden Horse)
Dispersion agent (this is engraved in 9850 seas)
Defoamer (this is engraved in 5500 seas)
Flow agent (3777EFKA)
Aerosil (N200 ring fine jade chemical industry)
Polyamide wax (ULTRA ring fine jade chemical industry)
Polymethylmethacrylate (980N, Japanese Asahi Chemical Industry)
Isocyanate resin (3390 Bayer)
Mixed solvent (benzene class, ester class, ketone, varsol China Petrochemical Industry)
E component product is filled a prescription: polyaspartic ester 55-65%, Rutile type Titanium Dioxide 20-25%, carbon black 0.5-1%, nano barium sulfate 5-10%, dispersion agent 0.3-0.5%, polyamide wax powder 0.3-0.5%, aerosil 0.2-0.3%, defoamer 0.1-0.2%, flow agent 0.1-0.2%, poly-methyl-propyl methyl esters 3-5%, mixed solvent 4-8%
F component product is filled a prescription: isocyanate resin: 100%
Mixed solvent comprises: benzene kind solvent, esters solvent, ketones solvent, varsol etc. are configured according to the ratio of 20:50:15:15.
Table 5: embodiment 13 ~ embodiment 18 formulation ratio
| Embodiment 13 | Embodiment 14 | Embodiment 15 | Embodiment 16 | Embodiment 17 | Embodiment 18 | |
| Polyaspartic ester | 55 | 60 | 62 | 65 | 55 | 62 |
| Dispersion agent | 0.3 | 0.5 | 0.3 | 0.4 | 0.3 | 0.4 |
| Rutile titanium white powder | 25 | 22 | 20 | 20 | 25 | 22 |
| Carbon black | 1 | 0.5 | 0.5 | 0.5 | 1 | 0.5 |
| Nano barium sulfate | 10 | 8 | 10 | 8 | 7 | 5 |
| Defoamer | 0.1 | 0.2 | 0.1 | 0.2 | 0.1 | 0.2 |
| Polyamide wax | 0.5 | 0.4 | 0.3 | 0.4 | 0.5 | 0.4 |
| Aerosil | 0.2 | 0.2 | 0.3 | 0.3 | 0.2 | 0.3 |
| Flow agent | 0.1 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 |
| Mixed solvent | 7.8 | 8 | 6.3 | 5.1 | 7.8 | 4.1 |
| Polymethylmethacrylate | --- | --- | --- | --- | 3 | 5 |
| Add up to | 100 | 100 | 100 | 100 | 100 | 100 |
Preparation method is:
1, polyaspartic ester, dispersion agent, polyamide wax powder, mixed solvent are added in production cylinder, adopt 800-1000 rev/min of high speed dispersion 30-40 minute, temperature during high speed dispersion maintains 55-65 DEG C;
2, adopt 600-800 rev/min and add Rutile type Titanium Dioxide, carbon black, aerosil, nano barium sulfate, defoamer while stirring, adopt 800-1000 rev/min of high speed dispersion 10-15 minute, adopt horizontal sand mill that fineness is ground to 20 microns;
3, add flow agent, poly-methyl-propyl methyl esters, adopt 600-800 rev/min to stir 10-15 minute;
Performance test
Test method: E:F=3:1 ratio is mixed, mixed solvent is adopted to carry out being diluted to spray viscosity (30-40S, T-4 cup), get salt spray resistance test steel plate, high temperature resistant test 3-5mm Plate Steel and standard-bred mouth iron plate and carry out phosphatization or grinding process, adopt 120# solvent oil by surperficial scrub, then adopt 200 order filter screen filtration sprayings.Chemical resistance, weather resistance, salt spray resistance test panel film thickness control at 90-100 μm, and traditional performance test panel gauge control is at 20-30 μm.After 48 hours do solid work completely, do all-round property testing, slaking tested high temperature resistant and salt spray resistance after 7 days.
Time of drying, over-all properties and publication CN102786870A " a kind of polyurea anti-corrosion coating production " contrasted according to GB/T1728, sticking power according to GB/T5210, impact according to GB/T1732, toughness according to GB/T1731, resistance to neutral salt spray according to GB/T1771, solids content test according to GB/T1725, measurement of luster according to GB/T1743, temper(ing) accelerated test according to GB/T1865, chemical resistance according to GB/T9274.
Table 6: embodiment 13 ~ 18 and CN102786870A performance comparison test result
In order to strengthen the protective value of protective system to steel surface further, the method for composite bed usually can be adopted to carry out coating performance lifting, below listing 4 kinds of dissimilar typical application schemes, and its over-all properties is made test.
Table 7: embodiment 19 ~ embodiment 22 auxiliary plan
| Embodiment 19 | Embodiment 20 | Embodiment 21 | Embodiment 22 | |
| Waterborne inorganic einc-rich primer, μm | 80-120 | --- | 80-120 | --- |
| Low VOC non-solvent epoxy zinc rich primer, μm | --- | 80-120 | --- | 80-120 |
| Low VOC non-solvent epoxy cloud iron intermediate coat, μm | 40-200 | 40-200 | --- | --- |
| Low VOC polyurea anti-corrosion coating, μm | 60-100 | 60-100 | 60-120 | 60-120 |
| Paint film general design thickness, μm | 180-420 | 180-420 | 140-240 | 140-240 |
Over-all properties contrast test is as follows:
Table 8: compound coating all-round property testing contrast table
This kind of product has ultrafast dry speed, high tenacity, weathering resistance is very excellent, resistance to artificial accelerated aging test can reach 2000 hours without considerable change, the sulfuric acid of resistance to 10%, 10% sodium hydroxide and 10% sodium chloride solution soak can 720 hours without exception, salt spray resistance can reach 1000 hours without exception.
By with upper base, in, the composite bed performance of the properties of face single-interval test and citing test analyzes, it is very effective that patent of the present invention is applied to heavy antisepsis field, requirement can be satisfied with completely in not only environmental protection aspect, overcome the market demands that water-miscible paint cannot meet and reach simultaneously, and all over-all propertieies are very excellent, greatly surmount anticorrosion expection requirement.
Only illustrate the solvent-free epoxy zinc rich primer of low VOC herein; its scope of patent protection also comprises low VOC solvent-free various color epoxy priming paint and large arch dam epoxy (rich zinc) priming paint; low its scope of patent protection of VOC non-solvent epoxy cloud iron intermediate coat also comprises the solvent-free assorted intermediate coat of low VOC and large arch dam epoxy micaceous iron intermediate coat, and low VOC polyurea anti-corrosion coating finish paint contains static conductive, insulation and other assorted polyurea anti-corrosion finish paint.
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.
This patent application protection domain comprises: railway bearing, railroad bridge, railway locomotive, highway bearing, highway bridge, petroleum storage tank, petroleum pipe line, natural gas line, oil equipment, passenger train, automobile, water conservancy project machinery, power equipment, power transmission and transforming equipment, airport steel construction, railway station steel construction, light-duty steel construction house, steel tower, chemical mechanical equipment, oil-well drilling equipment, equipment in Refining Units, oil refining steel construction, refinery steel construction, chemical industry and heavy chemical industry equipment facility, refinery appliance arrangement, steel construction, subway installations and facilities, aircraft, motor-car, boats and ships, naval vessels, seaplane carrier, warship, nuclear power steel structure, nuclear power generating equipment facility, thermoelectricity steel construction, thermal power generating equipment facility, freight container, harbour machinery, engineering machinery, building machinery, excavator, shovel loader, tower machine, oil exploration equipment facility, petroleum transportation installations and facilities, Coal Chemical Industry steel construction, Coal Chemical Industry installations and facilities, environmental protection equipment facility, water treating equipment facility, sewage disposal device facility, signal equipment facility, hanging device facility, light rail installations and facilities, railway casting, the different field industries such as steelmaking equipment facility.
Claims (5)
1. one kind is applied to the preparation method of the low VOC compound coating in heavy antisepsis field, comprise the preparation method of low VOC non-solvent epoxy zinc rich primer, the low preparation method of VOC non-solvent epoxy cloud iron intermediate coat and the preparation method of low VOC polyurea anti-corrosion finish paint, it is characterized in that:
Described low VOC non-solvent epoxy zinc rich primer comprises component A and component B, and component A comprises the following component according to massfraction meter: E51 epoxy resin 10-15%, epoxy active diluent 13-19%, modified resin 3-5%, zinc powder 60-70%, environmental protection zinc phosphate 5-10%, salt spray resistance auxiliary agent 0.5-1%, dispersion agent 0.2-0.3%, polyamide wax powder 0.5-0.8%, aerosil 0.2-0.3%, defoamer 0.1-0.2%, flow agent 0.1-0.2%, hydrocarbon resin 3-5%; B component formula for a product is the epoxy hardener of 100%;
Its preparation method comprises the following steps:
Epoxy resin, epoxy active diluent, dispersion agent, polyamide wax powder add in production cylinder by step a., adopt 800-1000 rev/min of high speed dispersion 30-40 minute, guarantee that high speed dispersion temperature reaches 55-65 DEG C;
Step b. adopts 600-800 rev/min and adds modified resin, aerosil, environmental protection zinc phosphate, zinc powder while stirring, and adopt 800-1000 rev/min of high speed dispersion 20-30 minute, fineness controls within 80 microns;
Step c adopts 600-800 rev/min and adds defoamer, flow agent, salt spray resistance auxiliary agent while stirring, adopts 600-800 rev/min to stir 10-15 minute;
Steps d. add hydrocarbon resin, adopt 600-800 rev/min to stir 10-15 minute;
Step e. dry plate realizes: A:B=10:1 ratio mixed, epoxy active diluent is adopted to carry out the adjustment of working viscosity, brushing or roller coat viscosity are adjusted to 50-60S (T-4 cup,-20 DEG C), the dry plate film thickness of chemical resistance test, salt spray resistance, cold-hot circularity test controls at 90-100 μm, traditional performance test dry plate paint adopts spraying method to realize, spray viscosity controls to control at 20-30 micron at 25-30S (T-4 cup ,-20 DEG C) film thickness;
Described low VOC non-solvent epoxy cloud iron intermediate coat comprises component C and component D, and component C comprises the following component according to massfraction meter: E51 epoxy resin: 15-20%, epoxy active diluent: 13-19%, modified resin: 5-10%, micaceous iron oxide gray: 35-40%, process white: 5-10%, sericite: 8-10%, Zinic stearas: 2-5%, dispersion agent: 0.3-0.5%, polyamide wax powder: 0.5-0.8%, aerosil: 0.2-0.3%, defoamer: 0.2-0.3%, flow agent: 0.1-0.3%, hydrocarbon resin 3-5%; D component product formula is the epoxy hardener of 100%;
Its preparation method comprises the following steps:
Epoxy resin, epoxy active diluent, dispersion agent, polyamide wax powder add in production cylinder by step a., adopt 800-1000 rev/min of high speed dispersion 30-40 minute, guarantee that high speed dispersion temperature reaches 55-65 DEG C;
Step b. adopts 600-800 rev/min and adds modified resin, aerosil, environmental protection zinc phosphate, zinc powder while stirring, and adopt 800-1000 rev/min of high speed dispersion 20-30 minute, fineness controls within 80 microns;
Step c adopts 600-800 rev/min and adds defoamer, flow agent, salt spray resistance auxiliary agent while stirring, adopts 600-800 rev/min to stir 10-15 minute;
Steps d. add hydrocarbon resin, adopt 600-800 rev/min to stir 10-15 minute;
Step e. dry plate realizes: A:B=10:1 ratio mixed, epoxy active diluent is adopted to carry out the adjustment of working viscosity, brushing or roller coat viscosity are adjusted to 50-60S (T-4 cup,-20 DEG C), the dry plate film thickness of chemical resistance test, salt spray resistance, cold-hot circularity test controls at 90-100 μm, traditional performance test dry plate paint adopts spraying method to realize, spray viscosity controls to control at 20-30 micron at 25-30S (T-4 cup ,-20 DEG C) film thickness;
Described low VOC polyurea anti-corrosion finish paint comprises component E and component F, and component E comprises the following component according to massfraction meter: polyaspartic ester 55-65%, Rutile type Titanium Dioxide 20-25%, carbon black 0.5-1%, nano barium sulfate 5-10%, dispersion agent 0.3-0.5%, polyamide wax powder 0.3-0.5%, aerosil 0.2-0.3%, defoamer 0.1-0.2%, flow agent 0.1-0.2%, poly-methyl-propyl methyl esters 3-5%, mixed solvent 4-8%; F component product formula is the isocyanate resin of 100%;
Its preparation method comprises the following steps:
Polyaspartic ester, dispersion agent, polyamide wax powder, mixed solvent add in production cylinder by step a., and adopt 800-1000 rev/min of high speed dispersion 30-40 minute, temperature during high speed dispersion maintains 55-65 DEG C;
Step b. adopts 600-800 rev/min and adds Rutile type Titanium Dioxide, carbon black, aerosil, nano barium sulfate, defoamer while stirring, adopts 800-1000 rev/min of high speed dispersion 10-15 minute, adopts horizontal sand mill that fineness is ground to 20 microns;
Step c adds flow agent, poly-methyl-propyl methyl esters, adopts 600-800 rev/min to stir 10-15 minute;
Steps d. dry plate realizes: E:F=3:1 ratio mixed, mixed solvent is adopted to carry out the adjustment of spray viscosity, spray viscosity is adjusted to 30-40S (25 DEG C, T-4 cup), spraying layer 2-3, the dry plate film thickness of chemical resistance test, salt spray resistance, weather resistance test controls at 90-100 μm, and traditional performance test dry plate film thickness controls at 20-30 micron.
2. the preparation method being applied to the low VOC compound coating in heavy antisepsis field according to claim 1, is characterized in that: described E51 epoxy resin comprises all E51 based epoxy resins.
3. the preparation method being applied to the low VOC compound coating in heavy antisepsis field according to claim 1, it is characterized in that: described epoxy active diluent includes but not limited to that butyl shrinks sweet ether, alcohol glycidyl ether, butylphenyl glycidyl ether, cardanol glycidyl ether, trimethylolpropane polyglycidylether, 1,6-hexanediol diglycidyl ether, BDDE, polypropylene glycol diglycidyl ether.
4. the preparation method being applied to the low VOC compound coating in heavy antisepsis field according to claim 1, is characterized in that: described epoxy hardener includes but not limited to phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine epoxy hardener.
5. the preparation method being applied to the low VOC compound coating in heavy antisepsis field according to claim 1, is characterized in that: described mixed solvent comprises benzene kind solvent, esters solvent, ketones solvent, varsol etc. and joins according to the ratio of 20:50:15:15.
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| CN106381013A (en) * | 2016-08-31 | 2017-02-08 | 湖南航天新材料技术研究院有限公司 | Heavy anti-corrosion coating and application thereof |
| CN106957585A (en) * | 2017-02-28 | 2017-07-18 | 西安天元合成材料有限公司 | A kind of anticorrosive paint |
| CN107134297A (en) * | 2017-04-25 | 2017-09-05 | 扬中市众成管路配件有限公司 | A kind of insulation box for instrument of high antiseptic property |
| CN107282388A (en) * | 2017-06-06 | 2017-10-24 | 青岛明珠钢结构有限公司 | A kind of anticorrosion of steel structure construction technique |
| CN108129947A (en) * | 2017-12-13 | 2018-06-08 | 成都拜迪新材料有限公司 | The epoxy zinc rich primer that cold-hot drastically recycles |
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| CN112500767A (en) * | 2020-11-11 | 2021-03-16 | 上海海隆赛能新材料有限公司 | Solvent-free heavy-duty anticorrosive paint matching system and use method thereof |
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| WO2022111373A1 (en) * | 2020-11-26 | 2022-06-02 | Ppg Coatings (Kunshan) Co., Ltd. | Zinc rich epoxy coating |
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| CN107282388A (en) * | 2017-06-06 | 2017-10-24 | 青岛明珠钢结构有限公司 | A kind of anticorrosion of steel structure construction technique |
| CN108129947A (en) * | 2017-12-13 | 2018-06-08 | 成都拜迪新材料有限公司 | The epoxy zinc rich primer that cold-hot drastically recycles |
| CN110295003A (en) * | 2019-07-02 | 2019-10-01 | 中国第一汽车股份有限公司 | A kind of automobile bottom diskware composite coating |
| CN111978820A (en) * | 2020-08-25 | 2020-11-24 | 永济优耐特绝缘材料有限责任公司 | Water-based epoxy protective coating system and preparation method thereof |
| CN112358791A (en) * | 2020-11-05 | 2021-02-12 | 无锡福斯特涂料有限公司 | Double-component epoxy micaceous iron intermediate paint and preparation method thereof |
| CN112500767A (en) * | 2020-11-11 | 2021-03-16 | 上海海隆赛能新材料有限公司 | Solvent-free heavy-duty anticorrosive paint matching system and use method thereof |
| WO2022111373A1 (en) * | 2020-11-26 | 2022-06-02 | Ppg Coatings (Kunshan) Co., Ltd. | Zinc rich epoxy coating |
| CN113527982A (en) * | 2021-07-19 | 2021-10-22 | 广州集泰化工股份有限公司 | Solvent-free epoxy zinc-rich coating |
| CN113527982B (en) * | 2021-07-19 | 2022-04-29 | 广州集泰化工股份有限公司 | Solvent-free epoxy zinc-rich coating |
| CN114806337A (en) * | 2022-05-12 | 2022-07-29 | 紫荆花涂料（上海）有限公司 | Deep-cooling resistant primer and finish composition as well as preparation method and application thereof |
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