CN105086774B - The preparation method of low VOC composite coating applied to heavy antisepsis field - Google Patents
The preparation method of low VOC composite coating applied to heavy antisepsis field Download PDFInfo
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Abstract
The invention proposes a kind of preparation methods of low VOC composite coating applied to heavy antisepsis field, include the preparation method, the preparation method of low VOC non-solvent epoxy cloud iron intermediate coat and the preparation method of low VOC polyurea anti-corrosion finishing coat of low VOC non-solvent epoxy zinc rich primer, the low VOC non-solvent epoxy zinc rich primer includes component A and component B, and low VOC non-solvent epoxy zinc rich primer includes component C and component D, low VOC non-solvent epoxy cloud iron intermediate coat include component E and component F.By bottom, in, the composite layer performance of the properties of face single-interval test and citing test analyzes, the heavy antisepsis field that is applied to that the invention patent method prepares composite coating is very effective, not only environmental protection aspect is entirely capable of being satisfied with requirement, the market demands that water paint is unable to satisfy and reaches are overcome simultaneously, and all comprehensive performances are very excellent, surmounted the expected requirement of anti-corrosion significantly.
Description
Technical field
The present invention relates to painting fields, particularly relate to a kind of preparation of low VOC composite coating applied to heavy antisepsis field
Method.
Background technique
As country is increasingly stringenter environmental requirement, country has successively put into effect new " environmental law ", " consumption tax ", " blowdown
Tax " and phase Yingcheng City are put into effect to administer the production and use that PM2.5 forbids oil-based paints.To water paint, solvent-free
The coating of equal zero VOCs discharge has welcome spring, but the construction and performance deficiency intrinsic for water paint can not solve at present,
Such as: enter winter, the nearly all temperature in the north can not construct at all in the phenomenon that subzero, water paint freezes, and in south
Side, temperature is too low, and under the excessive environment of humidity, water paint cannot parch for a long time, seriously affects production efficiency and production friendship phase,
And easily there are the morbid state such as sagging, shrinkage cavity, pin hole, and how aqueous to reach 150 microns in disposable film forming thickness
(thickness of dry film) above, this is that there is still a need for overcome the problems, such as current water paint.When country further goes into overdrive to VOC emission
And water paint is still unable to satisfy when the market demand, coating industry is satisfied with the market demand for needing to develop new coating.
Summary of the invention
The present invention proposes a kind of preparation method of low VOC composite coating applied to heavy antisepsis field, the compound painting of preparation
Layer has the comprehensive performances such as very excellent application property, the feature of environmental protection, chemical resistance, anti-corrosive properties, weatherability.
The technical scheme of the present invention is realized as follows: a kind of system of the low VOC composite coating applied to heavy antisepsis field
Preparation Method, the preparation of preparation method, low VOC non-solvent epoxy cloud iron intermediate coat including low VOC non-solvent epoxy zinc rich primer
The preparation method of method and low VOC polyurea anti-corrosion finishing coat,
The low VOC non-solvent epoxy zinc rich primer includes component A and component B, and component A includes according to mass fraction meter
Following component: E51 epoxy resin 10-15%, epoxy active diluent 13-19%, modified resin 3-5%, zinc powder 60-70%,
Environmentally friendly trbasic zinc phosphate 5-10%, salt spray resistance auxiliary agent 0.5-1%, dispersing agent 0.2-0.3%, polyamide wax powder 0.5-0.8%, gas phase two
Silica 0.2-0.3%, defoaming agent 0.1-0.2%, levelling agent 0.1-0.2%, hydrocarbon resin 3-5%；B component product formula is
100% epoxy hardener；
Preparation method includes the following steps:
Epoxy resin, epoxy active diluent, dispersing agent, polyamide wax powder are added in production cylinder step a., use
800-1000 revs/min high speed dispersion 30-40 minutes, it is ensured that high speed dispersion temperature reaches 55-65 DEG C；
Modified resin, fumed silica, environmentally friendly trbasic zinc phosphate, zinc is added using 600-800 revs/min in step b. while stirring
Powder, using 800-1000 revs/min high speed dispersion 20-30 minutes, fineness control within 80 microns；
Defoaming agent, levelling agent, salt spray resistance auxiliary agent is added using 600-800 revs/min in step c. while stirring, using 600-
800 revs/min stirring 10-15 minutes；
Step d. be added hydrocarbon resin, using 600-800 revs/min stirring 10-15 minutes；
Step e. dry plate is realized: A:B=10:1 ratio being uniformly mixed, carries out working viscosity using epoxy active diluent
Adjustment, will brush or roller coating viscosity is adjusted to 50-60S (T-4 glasss, -20 DEG C), it is chemical-resistance test, salt spray resistance, resistance to
At 90-100 μm, it is real using spraying method that traditional performance tests dry plate paint for the dry plate film thickness control of cold cycling test
Existing, spray viscosity control is controlled in 25-30S (T-4 glasss, -20 DEG C) film thickness at 20-30 microns；
The low VOC non-solvent epoxy cloud iron intermediate coat includes component C and component D, and component C includes according to mass fraction meter
Following component: E51 epoxy resin: 15-20%, epoxy active diluent: 13-19%, modified resin: 5-10%, mica oxygen
Change iron ash: 35-40%, blanc fixe: 5-10%, sericite: 8-10%, zinc stearate: 2-5%, dispersing agent: 0.3-
0.5%, polyamide wax powder: 0.5-0.8%, fumed silica: 0.2-0.3%, defoaming agent: 0.2-0.3%, levelling agent:
0.1-0.3%, hydrocarbon resin 3-5%；The epoxy hardener that D component product formula is 100%；
Preparation method includes the following steps:
Epoxy resin, epoxy active diluent, dispersing agent, polyamide wax powder are added in production cylinder step a., use
800-1000 revs/min high speed dispersion 30-40 minutes, it is ensured that high speed dispersion temperature reaches 55-65 DEG C；
Modified resin, fumed silica, environmentally friendly trbasic zinc phosphate, zinc is added using 600-800 revs/min in step b. while stirring
Powder, using 800-1000 revs/min high speed dispersion 20-30 minutes, fineness control within 80 microns；
Defoaming agent, levelling agent, salt spray resistance auxiliary agent is added using 600-800 revs/min in step c. while stirring, using 600-
800 revs/min stirring 10-15 minutes；
Step d. be added hydrocarbon resin, using 600-800 revs/min stirring 10-15 minutes；
Step e. dry plate is realized: A:B=10:1 ratio being uniformly mixed, carries out working viscosity using epoxy active diluent
Adjustment, will brush or roller coating viscosity is adjusted to 50-60S (T-4 glasss, -20 DEG C), it is chemical-resistance test, salt spray resistance, resistance to
At 90-100 μm, it is real using spraying method that traditional performance tests dry plate paint for the dry plate film thickness control of cold cycling test
Existing, spray viscosity control is controlled in 25-30S (T-4 glasss, -20 DEG C) film thickness at 20-30 microns；
The low VOC polyurea anti-corrosion finishing coat includes component E and component F, and component E includes according to mass fraction meter such as the following group
Point: polyaspartic ester 55-65%, rutile type titanium white 20-25%, carbon black 0.5-1%, nano barium sulfate 5-10%,
Dispersing agent 0.3-0.5%, polyamide wax powder 0.3-0.5%, fumed silica 0.2-0.3%, defoaming agent 0.1-0.2%, stream
Flat agent 0.1-0.2%, poly- methyl-propyl methyl esters 3-5%, mixed solvent 4-8%；The isocyanic acid that F component product formula is 100%
Ester resin；
Preparation method includes the following steps:
Polyaspartic ester, dispersing agent, polyamide wax powder, mixed solvent are added in production cylinder step a., use
800-1000 revs/min high speed dispersion 30-40 minutes, temperature when high speed dispersion maintains 55-65 DEG C；
Step b. is added rutile type titanium white using 600-800 revs/min while stirring, carbon black, fumed silica, receives
Nano-barium sulfate, defoaming agent, using 800-1000 revs/min high speed dispersion 10-15 minutes, fineness is ground to using horizontal sand mill
20 microns；
Step c. be added levelling agent, poly- methyl-propyl methyl esters, using 600-800 revs/min stirring 10-15 minutes；
Step d. dry plate is realized: E:F=3:1 ratio is uniformly mixed, the adjustment of spray viscosity is carried out using mixed solvent,
Spray viscosity is adjusted to 30-40S (25 DEG C of T-4 cup), layer 2-3, chemical-resistance test, salt spray resistance, weatherability are sprayed
At 90-100 μm, traditional performance tests the control of dry plate film thickness at 20-30 microns for the dry plate film thickness control that can be tested.
Preferably, the E51 epoxy resin includes all E51 based epoxy resins.
Preferably, the epoxy active diluent includes but is not limited to the sweet ether of butyl shrink, alcohol glycidol ether, butyl
Phenyl glycidyl ether, cardanol glycidyl ether, trimethylolpropane polyglycidylether, 1,6- hexylene glycol 2-glycidyl
Ether, 1,4-butanediol diglycidyl ether, polypropylene glycol diglycidyl ether.
Preferably, the epoxy hardener includes but is not limited to that phenolic aldehyde amine epoxy hardener, fatty amines epoxy are solid
Agent, alicyclic ring amine epoxy hardener.
Preferably, the mixed solvent includes benzene kind solvent, esters solvent, ketones solvent, hydrocarbon solvent etc. according to 20:
The ratio of 50:15:15 is matched.
Compared with the prior art, the advantages of the present invention are as follows: the present invention provides a kind of bottoms applied to heavy antisepsis field
The field of the preparation method of paint, intermediate coat and finishing coat, this patent protection is contained applied to railway support, railroad bridge, railway
The different fields industries such as locomotive, highway support, highway bridge, petroleum storage tank, petroleum pipeline, natural gas line, oil equipment, tool
There are the comprehensive performances such as very excellent application property, the feature of environmental protection, chemical resistance, anti-corrosive properties, weatherability.The compound painting of this method preparation
Layer provides a kind of normal non-solvent epoxy system to reach the standard of low VOC emission, and the coating VOC emission amount that this makes is complete
It is complete to control within 50mg/L, no matter and enter northern winter or southern wet season, can all have very excellent
Different drying property, while disposable thickness can reach 200 microns (dry films) or more not sagging.This product is complied fully in country
All kinds of requirements that environmental protection is proposed, and to water quality, soil without any pollution.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
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 (Anhui XY692 is newly remote)
Zinc powder (600 mesh zinc powder Yangzhou are double to contain)
Environmentally friendly trbasic zinc phosphate (PZ20 ring fine jade chemical industry)
Dispersing agent (32500 road Bo Run)
Defoaming agent (625 YCK)
Levelling agent (306 BYK)
Salt spray resistance auxiliary agent (engraves this in 1501 seas)
Fumed silica (N200 ring fine jade chemical industry)
Polyamide wax powder (LV ring fine jade chemical industry)
Hydrocarbon resin (DI Johanna Lüttge)
Pnenolic aldehyde amine hardener (three wood of the Jiangsu T-31)
Epoxy active diluent: include the sweet ether of butyl shrink, alcohol glycidol ether, butylphenyl glycidyl ether, cashew nut
Phenol glycidol ether, trimethylolpropane polyglycidylether, 1,6- hexanediol diglycidyl ether, 1,4-butanediol two are shunk
The different types of epoxy active diluent such as glycerin ether, polypropylene glycol diglycidyl ether；
Epoxy hardener: phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine epoxy hardener etc.
Belong to the epoxy hardener protection scope of the invention patent；
Table 1: 1~embodiment of 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 |
| Dispersing agent | 0.2 | 0.3 | 0.3 | 0.3 | 0.2 | 0.3 |
| Zinc powder | 70 | 65 | 60 | 65 | 70 | 62 |
| Environmentally friendly trbasic zinc phosphate | 5 | 8 | 10 | 8 | 5 | 8 |
| Defoaming agent | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | 0.2 |
| Levelling 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 |
| Fumed silica | 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 |
| It is total | 100 | 100 | 100 | 100 | 100 | 100 |
Preparation method is:
1, epoxy resin, epoxy active diluent, dispersing agent, polyamide wax powder are added in production cylinder, using 800-
1000 revs/min high speed dispersion 30-40 minutes, it is ensured that high speed dispersion temperature reaches 55-65 DEG C；
2, modified resin, fumed silica, environmentally friendly trbasic zinc phosphate, zinc powder are added while stirring using 600-800 revs/min,
Using 800-1000 revs/min high speed dispersion 20-30 minutes, fineness control within 80 microns；
3, using 600-800 revs/min while stirring be added defoaming agent, levelling agent, salt spray resistance auxiliary agent, using 600-800 turn/
Divide stirring 10-15 minutes；
4, be added hydrocarbon resin, using 600-800 revs/min stirring 10-15 minutes.
Dry plate is realized:
Performance test
Test method: A:B=10:1 ratio is uniformly mixed, and the tune of working viscosity is carried out using epoxy active diluent
It is whole, spray viscosity is adjusted to 30-40S (T-4 glasss, 25 DEG C), chemical-resistance test, salt spray resistance, cold-hot cyclicity
The dry plate film thickness control of test is at 90-100 μm, and traditional performance is tested dry plate paint and realized using spraying method, spray viscosity
Control is controlled in 25-30S (T-4 glasss, 25 DEG C) film thickness at 20-30 microns.Curing tested after doing solid work completely within 7 days chemical resistance,
Salt spray resistance, cold-hot circularity test.
Dry foundation GB/T1728 is executed, adhesive force is executed according to GB/T5210, impact foundation GB/T1732 is executed, toughness
It is executed according to GB/T1731, nonvolatile matter is executed according to GB/T1725, chemical-resistance is executed according to GB/T9274, resistance to neutral salt
Mist test according to GB/T1771 execute, film thickness according to GB/T13452.2 execute, all properties with granted patent CN
102533052 A " a kind of solvent-free type epoxy zinc rich primer and preparation method thereof " performance compares test.
Table 2: Examples 1 to 6 and 102533052 A performance comparison test result of CN
Product characteristic: this product has very excellent application property, quick-drying, easily plays thickness, one-off construction dry film
Thickness can reach 200 microns or more, and antiseptic property is very excellent, and salt spray resistance can reach 3000 hours or more, have simultaneously
Very excellent chemical-resistance.
Two, the preparation method of low VOC non-solvent epoxy cloud iron intermediate coat
Epoxy active diluent: include the sweet ether of butyl shrink, alcohol glycidol ether, butylphenyl glycidyl ether, cashew nut
Phenol glycidol ether, trimethylolpropane polyglycidylether, 1,6- hexanediol diglycidyl ether, 1,4-butanediol two are shunk
The different types of epoxy active diluent such as glycerin ether, polypropylene glycol diglycidyl ether；
Epoxy hardener: phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine epoxy hardener etc.
Belong to the epoxy hardener protection scope of the invention patent；
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 (Anhui XY692 is newly remote)
Blanc fixe (3000 mesh barium sulfate Shanghai jump river)
Micaceous iron oxide gray (800 mesh micaceous iron oxide gray Chengdu sections are poly-)
Sericite (A4 Chuzhou Wan Qiao)
Dispersing agent (the positive row of 9850 favours)
Defoaming agent (the positive row of 6800 favours)
Levelling agent (the positive row of 466 favours)
Fumed silica (N200 ring fine jade chemical industry)
Zinc stearate (the prosperous industry in the Chengdu TV)
Polyamide wax powder (LV ring fine jade chemical industry)
Hydrocarbon resin (DI Johanna Lüttge)
Pnenolic aldehyde amine hardener (three wood of the Jiangsu T-31)
Table 3: 7~embodiment of 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 |
| Dispersing agent | 0.3 | 0.4 | 0.5 | 0.3 | 0.3 | 0.3 |
| Micaceous iron oxide gray | 40 | 35 | 35 | 40 | 38 | 40 |
| Blanc fixe | 5 | 8 | 10 | 6 | 6 | 5 |
| Defoaming agent | 0.2 | 0.3 | 0.2 | 0.3 | 0.3 | 0.2 |
| Levelling 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 |
| Fumed silica | 0.3 | 0.2 | 0.3 | 0.2 | 0.2 | 0.3 |
| Sericite | 8 | 10 | 8 | 8 | 8 | 8 |
| Zinc stearate | 2 | 3 | 4 | 5 | 5 | 2 |
| Hydrocarbon resin | -- | -- | -- | -- | 3 | 5 |
| It is total | 100 | 100 | 100 | 100 | 100 | 100 |
Preparation method is:
1, epoxy resin, epoxy active diluent, dispersing agent, polyamide wax powder are added in production cylinder, using 800-
1000 revs/min high speed dispersion 30-40 minutes, it is ensured that high speed dispersion temperature reaches 55-65 DEG C；
2, modified resin, micaceous iron oxide gray, blanc fixe, thin,tough silk cloud are added while stirring using 600-800 revs/min
Mother, zinc stearate, fumed silica, using 800-1000 revs/min high speed dispersion 10-15 minutes, using horizontal sand mill will
Fineness is ground to 50 microns；
3, defoaming agent, levelling agent are added while stirring using 600-800 revs/min, using 800-1000 revs/min of stirring 10-
15 minutes；
4, be added hydrocarbon resin, using 600-800 revs/min stirring 10-15 minutes.
Performance test
Test method: C:D=5:1 ratio is uniformly mixed, and is diluted using epoxy active diluent to spray viscosity
(25 DEG C of 30-40S, T-4 cup), roller coating viscosity (25 DEG C of 60-80S, T-4 cup), chemical-resistance, salt spray resistance test, cold-hot follow
The dry plate film thickness of ring test is controlled at 90-100 μm, and traditional performance test board thickness control is at 20-30 μm.Curing 7 days
Chemical resistance, salt spray resistance, cold-hot circularity test are tested after doing solid work completely.
Table 4: 7~12 the performance test results of embodiment
Product characteristic: this product has very excellent application property, quick-drying, easily plays thickness, one-off construction dry film
Thickness can reach 200 microns or more, and antiseptic property is very excellent, and salt spray resistance can reach 2000 hours or more, and have
Very excellent grinability.
Three, the preparation method of low VOC polyurea anti-corrosion finishing coat
Specific embodiment
Raw material is as follows:
Polyaspartic ester (F524 flies Yang Xin's material)
Rutile type titanium white (Jinzhou CR-501 titanium industry)
Carbon black (MA-100 Mitsubishi)
Nano barium sulfate (Beijing BS-80 Golden Horse)
Dispersing agent (engraves this in 9850 seas)
Defoaming agent (engraves this in 5500 seas)
Levelling agent (3777 EFKA)
Fumed silica (N200 ring fine jade chemical industry)
Polyamide wax (ULTRA ring fine jade chemical industry)
Polymethyl methacrylate (980N, Japanese Asahi Chemical Industry)
Isocyanate resin (3390 Bayer)
Mixed solvent (benzene class, esters, ketone, petrochemical industry in hydrocarbon solvent)
E component product formula: polyaspartic ester 55-65%, rutile type titanium white 20-25%, carbon black 0.5-
1%, nano barium sulfate 5-10%, dispersing agent 0.3-0.5%, polyamide wax powder 0.3-0.5%, fumed silica 0.2-
0.3%, defoaming agent 0.1-0.2%, levelling agent 0.1-0.2%, poly- methyl-propyl methyl esters 3-5%, mixed solvent 4-8%
F component product formula: isocyanate resin: 100%
Mixed solvent includes: benzene kind solvent, esters solvent, ketones solvent, hydrocarbon solvent etc. according to 20:50:15:15 ratio
Example is configured.
Table 5: 13~embodiment of embodiment, 18 formulation ratio
| Embodiment 13 | Embodiment 14 | Embodiment 15 | Embodiment 16 | Embodiment 17 | Embodiment 18 | |
| Polyaspartic ester | 55 | 60 | 62 | 65 | 55 | 62 |
| Dispersing 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 |
| Defoaming agent | 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 |
| Fumed silica | 0.2 | 0.2 | 0.3 | 0.3 | 0.2 | 0.3 |
| Levelling 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 |
| Polymethyl methacrylate | --- | --- | --- | --- | 3 | 5 |
| It is total | 100 | 100 | 100 | 100 | 100 | 100 |
Preparation method is:
1, polyaspartic ester, dispersing agent, polyamide wax powder, mixed solvent are added in production cylinder, using 800-
1000 revs/min high speed dispersion 30-40 minutes, temperature when high speed dispersion maintains 55-65 DEG C；
2, rutile type titanium white, carbon black, fumed silica, nano-sulfur are added while stirring using 600-800 revs/min
Sour barium, defoaming agent, using 800-1000 revs/min high speed dispersion 10-15 minutes, it is micro- that fineness is ground to 20 using horizontal sand mill
Rice；
3, be added levelling agent, poly- methyl-propyl methyl esters, using 600-800 revs/min stirring 10-15 minutes；
Performance test
Test method: E:F=3:1 ratio is uniformly mixed, and is diluted using mixed solvent to spray viscosity (30-
40S, T-4 glasss), take salt spray resistance test steel plate, high temperature resistant test 3-5mm thick steel plate and standard tinplate sheet to carry out phosphatization or polishing
Processing, is scrubbed surface using 120# solvent naphtha, is then sprayed using 200 mesh filter screen filtrations.It is chemical-resistance, weather-proof
Performance, the control of salt spray resistance test board film thickness are at 90-100 μm, and traditional performance test board thickness control is at 20-30 μm.To 48
Hour does all-round property testing after doing solid work completely, tests high temperature resistant and salt spray resistance after curing 7 days.
Drying time according to GB/T1728, adhesive force according to GB/T5210, impact according to GB/T1732, toughness according to
GB/T1731, resistance to neutral salt spray are according to GB/T1771, solid content test according to GB/T1725, measurement of luster according to GB/
T1743, artificial ageing accelerated test are according to GB/T1865, chemical-resistance according to GB/T9274, comprehensive performance and publication
102786870 A of CN " a kind of polyurea anti-corrosion coating production " is compared.
Table 6: embodiment 13~18 and 102786870 A performance comparison test result of CN
In order to further strengthen anticorrosive paint to the protective value of steel surface, it will usually be carried out using the method for composite layer
Coating performance is promoted, and is exemplified below out 4 kinds of different types of typical coating schemes, and its comprehensive performance is made test.
Table 7: 19~embodiment of 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 overall design thickness, μm | 180-420 | 180-420 | 140-240 | 140-240 |
Comprehensive performance contrast test is as follows:
Table 8: composite coating all-round property testing contrast table
Such product has ultrafast dry speed, high tenacity, and weatherability is very excellent, and resistance to artificial accelerated aging test can reach
Resistance to 10% sulfuric acid, 10% sodium hydroxide and 10% sodium chloride solution immersion can 720 hours nothings without significant change within 2000 hours
It is abnormal, salt spray resistance can reach 1000 hours it is without exception.
By the above bottom, in, the composite layer performance of the properties of face single-interval test and citing test analyze, this hair
Bright patent is applied to heavy antisepsis field and is very effective, and not only environmental protection aspect is entirely capable of being satisfied with requirement, while overcoming water
Property the paint market demands that are unable to satisfy and reach, and all comprehensive performances are very excellent, surmounted that anti-corrosion is expected to be required significantly.
The low solvent-free epoxy zinc rich primer of VOC is only illustrated herein, and scope of patent protection also includes low VOC solvent-free
Various color epoxy priming paint and large arch dam epoxy (zinc-rich) priming paint, low its scope of patent protection of VOC non-solvent epoxy cloud iron intermediate coat is also
Comprising the solvent-free assorted intermediate coat of low VOC and large arch dam epoxy micaceous iron intermediate coat, low VOC polyurea anti-corrosion coating finishing coat, which contains, is led
Electrostatic, insulation and other assorted polyurea anti-corrosion finishing coats.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
This patent application protection scope include: railway support, railroad bridge, railway locomotive, highway support, highway bridge,
Petroleum storage tank, petroleum pipeline, natural gas line, oil equipment, passenger train, automobile, water conservancy project machinery, power equipment, power transmission and transformation
Equipment, airport steel construction, railway station steel construction, light-duty steel construction house, steel tower, chemical mechanical equipment, oil-well drilling equipment, oil refining dress
Standby, oil refining steel construction, refinery steel construction, chemical industry and weight chemical industry equipment facility, refinery appliance arrangement, steel construction, subway is installed to set
Standby facility, aircraft, motor-car, ship, naval vessels, aircraft carrier, warship, nuclear power steel construction, nuclear power generating equipment facility, thermoelectricity steel construction,
Thermal power generating equipment facility, container, harbour machinery, engineering machinery, building machinery, excavator, loading machine, tower crane, oil exploitation are set
Standby facility, petroleum transportation installations and facilities, coal chemical industry steel construction, coal chemical industry installations and facilities, environmental protection equipment facility, water treatment facilities are set
It applies, sewage disposal device facility, communication equipment facility, hanging device facility, light rail installations and facilities, railway casting, steelmaking equipment
The different fields industry such as facility.
Claims (4)
1. a kind of preparation method of the low VOC composite coating applied to heavy antisepsis field, including low VOC non-solvent epoxy zinc-rich bottom
The preparation side of the preparation method of paint, the preparation method of low VOC non-solvent epoxy cloud iron intermediate coat and low VOC polyurea anti-corrosion finishing coat
Method, it is characterised in that:
The low VOC non-solvent epoxy zinc rich primer includes component A and component B, and component A includes according to the as follows of mass fraction meter
Component: E51 epoxy resin 10-15%, epoxy active diluent 13-19%, modified resin 3-5%, zinc powder 60-70%, environmental protection
Trbasic zinc phosphate 5-10%, salt spray resistance auxiliary agent 0.5-1%, dispersing agent 0.2-0.3%, polyamide wax powder 0.5-0.8%, gas phase titanium dioxide
Silicon 0.2-0.3%, defoaming agent 0.1-0.2%, levelling agent 0.1-0.2%, hydrocarbon resin 3-5%；B component product formula is
100% epoxy hardener；
Preparation method includes the following steps:
Epoxy resin, epoxy active diluent, dispersing agent, polyamide wax powder are added in production cylinder step a., using 800-
1000 revs/min high speed dispersion 30-40 minutes, it is ensured that high speed dispersion temperature reaches 55-65 DEG C；
Modified resin, fumed silica, environmentally friendly trbasic zinc phosphate, zinc powder is added using 600-800 revs/min in step b. while stirring,
Using 800-1000 revs/min high speed dispersion 20-30 minutes, fineness control within 80 microns；
Step c. using 600-800 revs/min while stirring be added defoaming agent, levelling agent, salt spray resistance auxiliary agent, using 600-800 turn/
Divide stirring 10-15 minutes；
Step d. be added hydrocarbon resin, using 600-800 revs/min stirring 10-15 minutes；
Step e. dry plate is realized: A:B=10:1 ratio being uniformly mixed, the tune of working viscosity is carried out using epoxy active diluent
It is whole, it will be brushed using T-4 glasss at 25 DEG C or roller coating viscosity adjusts 50-60S, chemical-resistance test, salt spray resistance, cold-hot
At 90-100 μm, traditional performance is tested dry plate paint and is realized using spraying method, adopts for the dry plate film thickness control of circularity test
Spray viscosity is controlled into 25-30S at 25 DEG C with T-4 glasss, film thickness is controlled at 20-30 microns；
The low VOC non-solvent epoxy cloud iron intermediate coat includes component C and component D, component C include according to mass fraction meter as
Lower component: E51 epoxy resin: 15-20%, epoxy active diluent: 13-19%, modified resin: 5-10%, micaceous iron oxide
Ash: 35-40%, blanc fixe: 5-10%, sericite: 8-10%, zinc stearate: 2-5%, dispersing agent: 0.3-0.5%, gather
Amide wax powder: 0.5-0.8%, fumed silica: 0.2-0.3%, defoaming agent: 0.2-0.3%, levelling agent: 0.1-0.3%,
Hydrocarbon resin 3-5%；The epoxy hardener that D component product formula is 100%；
Preparation method includes the following steps:
Epoxy resin, epoxy active diluent, dispersing agent, polyamide wax powder are added in production cylinder step a., using 800-
1000 revs/min high speed dispersion 30-40 minutes, it is ensured that high speed dispersion temperature reaches 55-65 DEG C；
Modified resin, micaceous iron oxide gray, blanc fixe, thin,tough silk cloud is added using 600-800 revs/min in step b. while stirring
Mother, zinc stearate, fumed silica, using 800-1000 revs/min high speed dispersion 10-15 minutes, using horizontal sand mill will
Fineness is ground to 50 microns；
Defoaming agent, levelling agent is added using 600-800 revs/min in step c. while stirring, using 600-800 revs/min of stirring 10-15
Minute；
Step d. be added hydrocarbon resin, using 600-800 revs/min stirring 10-15 minutes；
Step e. dry plate is realized: C:D=5:1 ratio being uniformly mixed, using the T-4 glasss of epoxy active diluent progress at 25 DEG C
It is diluted to spray viscosity 30-40S, using the T-4 glasss of roller coating viscosity 60-80S at 25 DEG C, chemical-resistance, salt spray resistance are tested, are resistance to
The dry plate film thickness of cold cycling test is controlled at 90-100 μm, and traditional performance test board thickness control is ripe at 20-30 μm
Change 7 days and tests chemical resistance, salt spray resistance, cold-hot circularity test after doing solid work completely；
The low VOC polyurea anti-corrosion finishing coat includes component E and component F, and component E includes the following component according to mass fraction meter:
Polyaspartic ester 55-65%, rutile type titanium white 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%, fumed silica 0.2-0.3%, defoaming agent 0.1-0.2%, levelling agent
0.1-0.2%, polymethyl methacrylate 3-5%, mixed solvent 4-8%；The isocyanates that F component product formula is 100%
Resin；
Preparation method includes the following steps:
Polyaspartic ester, dispersing agent, polyamide wax powder, mixed solvent are added in production cylinder step a., using 800-
1000 revs/min high speed dispersion 30-40 minutes, temperature when high speed dispersion maintains 55-65 DEG C；
Rutile type titanium white, carbon black, fumed silica, nano-sulfur is added using 600-800 revs/min in step b. while stirring
Sour barium, defoaming agent, using 800-1000 revs/min high speed dispersion 10-15 minutes, it is micro- that fineness is ground to 20 using horizontal sand mill
Rice；
Step c. be added levelling agent, polymethyl methacrylate, using 600-800 revs/min stirring 10-15 minutes；
Step d. dry plate is realized: E:F=3:1 ratio being uniformly mixed, the adjustment of spray viscosity is carried out using mixed solvent, is used
Spray viscosity is controlled 30-40S at 25 DEG C by T-4 glasss, sprays layer 2-3, chemical-resistance test, salt spray resistance, weather resistance
At 90-100 μm, traditional performance tests the control of dry plate film thickness at 20-30 microns for the dry plate film thickness control of test.
2. the preparation method of the low VOC composite coating according to claim 1 applied to heavy antisepsis field, feature exist
In: the E51 epoxy resin includes all E51 based epoxy resins.
3. the preparation method of the low VOC composite coating according to claim 1 applied to heavy antisepsis field, feature exist
In: the epoxy hardener includes phenolic aldehyde amine epoxy hardener, fatty amines epoxy hardener, alicyclic ring amine curable epoxide
Agent.
4. the preparation method of the low VOC composite coating according to claim 1 applied to heavy antisepsis field, feature exist
In: the mixed solvent include benzene kind solvent, esters solvent, ketones solvent, hydrocarbon solvent according to 20:50:15:15 ratio into
Row is matched.
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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 |
| CN106957585B (en) * | 2017-02-28 | 2019-11-19 | 西安天元合成材料有限公司 | A kind of anticorrosive paint |
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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 |
| CN112500767B (en) * | 2020-11-11 | 2022-07-08 | 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 |
| CN114539887A (en) * | 2020-11-26 | 2022-05-27 | 庞贝捷涂料（昆山）有限公司 | Zinc-rich epoxy 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 |
| CN114806337B (en) * | 2022-05-12 | 2023-03-31 | 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 |
| CN116179054A (en) * | 2023-05-04 | 2023-05-30 | 北京清冠科技有限公司 | Aerogel modified composite coating for automobile chassis and preparation method thereof |
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