CN105838193B - A kind of water-base epoxy priming paint - Google Patents
A kind of water-base epoxy priming paint Download PDFInfo
- Publication number
- CN105838193B CN105838193B CN201610312741.2A CN201610312741A CN105838193B CN 105838193 B CN105838193 B CN 105838193B CN 201610312741 A CN201610312741 A CN 201610312741A CN 105838193 B CN105838193 B CN 105838193B
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- Prior art keywords
- zinc powder
- water
- priming paint
- preparation
- base epoxy
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
Abstract
The invention belongs to paint field, in particular to a kind of water-base epoxy priming paint.Calixarenes molecule is grafted on nano zinc powder by the present invention using isocyanates, modified zinc powder forms certain entanglement with epoxy molecule structure by the calixarenes of grafting up in whipping process, the dispersion stabilization for promoting zinc powder in paint vehicle solves reunion of the zinc powder in resin, settlement issues.Product no pollution to the environment of the invention, it is easy for construction, it is harmless to construction personnel's health；Paint film rate of drying is fast, and adhesive force is good, high mechanical strength, and antiseptic property is excellent.
Description
Technical field
The invention belongs to paint field, in particular to a kind of water-base epoxy priming paint.
Background technique
In steel structure anti-corrosion painting design, zinc rich primer is using the zinc powder with sacrificial anode effect as main antirust
A kind of anticorrosive paint product of pigment, it will have good adhesive force to steel, and can play excellent anti-rust action.Zinc-rich
Mainly there are three types for priming paint：Epoxy zinc rich primer, alcohol-soluble zinc-rich coating and waterborne inorganic einc-rich primer.Wherein, ring
The corrosion-resisting function of oxygen zinc rich primer is to sacrifice zinc powder by corrosion in corrosive environment to reach protection steel substrate, is broadly divided into
Three kinds：Cured epoxy zinc rich primer, water-soluble cured epoxy zinc rich primer and solvent type cured epoxy zinc-rich after water solubility
Priming paint.
Epoxy zinc rich primer anticorrosion mechanism is：(1) epoxy zinc rich primer plays electro-chemical protection：Since zinc compares iron
Vivaciously, it is easy to lose electronics.During corroding early period, zinc powder and steel substrate form primary battery, and the electrode potential of zinc compares iron
Electrode potential it is negative, zinc is anode (commonly referred to as sacrificial anode), and iron is cathode, and electric current flows to iron by zinc, and steel substrate just obtains
Cathodic protection.Because its zinc powder is to the electro-chemical protection of steel, also known as electrochemistry antirust paint.(2) in epoxy zinc rich primer
Zine corrosion deposit shielding protection：Corrosion late stage in, zinc powder paint is constantly corroded in application process, zinc powder gap and
Steel surface deposited corrosion product, i.e. basic zinc carbonate, be commonly called as " white rust ", compact structure and non-conductive, be the steady of indissoluble
Determine compound, the erosion with mask erosion medium can be stopped, play corrosion protection result, therefore is also known as " reviewing one's lessons by oneself for zinc powder paint
It is multiple " property.
But since zinc powder cannot be for a long time in the dispersion stored for extended periods based on water, so common on the market at present
Water-thinned epoxy zinc-rich is the in the majority of three components.This method is more complex, needs in order to mix each component, and zinc powder is added mixed
When conjunction, Zn dust may return to human health and easily lead to " zinc pyreticosis " because of sucking, in terms of having potential health and safety
The problem of.
Summary of the invention
Technical problem to be solved by the present invention lies in：The dispersion stabilization of zinc powder in water-base epoxy priming paint is improved, for solution
Certainly this technical problem, the technical solution adopted by the present invention are：
A kind of water-base epoxy priming paint is provided, according to the number of parts by weight, which includes following component：
Wherein, aqueous epoxy resins are epoxy resin E-40, E-42, E-44, E-51；
Epoxide diluent is AGE epoxy active diluent or BGE epoxy active diluent；
Cosolvent is propylene glycol monomethyl ether or propylene glycol methyl ether acetate；
The preferred nanoscale zinc powder of zinc powder；
Zinc powder modifying agent is cup [6] aromatic hydrocarbons or cup [8] aromatic hydrocarbons；
Aqueous epoxy curing agent is 701 curing agent, WH900 curing agent or 721 curing agent.
The present invention also provides a kind of preparation methods of above-mentioned water-base epoxy priming paint, specially：
(1) modification of zinc powder
Zinc powder modifying agent calixarenes and isocyanates are added in organic solvent, the condition for being 70~85 DEG C in temperature
Under, mechanical stirring back flow reaction 2~6 hours, zinc powder is added into above-mentioned system, continues to be stirred at reflux 8~15 hours, recycles molten
Agent is filtered, and washing dry, pulverize, and obtains modified zinc powder,
Wherein, the mass ratio of isocyanates and zinc powder modifying agent calixarenes is 0.2~0.4：1, isocyanates is selected from toluene
Diisocyanate, isophorone diisocyanate, hexa-methylene -1,6- diisocyanate, Methylcyclohexyl diisocyanate or
Between xylylene diisocyanate,
The mass ratio of zinc powder modifying agent calixarenes and organic solvent is 0.02~0.05：1, organic solvent is selected from acetic acid second
Ester, chloroform or dimethylformamide；
(2) aqueous epoxy resins, epoxide diluent, cosolvent are mixed sufficiently, then is added in step (1) obtains thereto
Modification zinc powder, stirred 15~30 minutes at a temperature of 60~70 DEG C, regulation system pH value be 7~9 to get arrive component A；
(3) it after mixing aqueous epoxy curing agent with deionized water sufficiently, is individually packed as component B.
In use, after component A and component B are sufficiently mixed, film-forming.
The beneficial effects of the present invention are：Calixarenes molecule is grafted on nano zinc powder by the present invention using isocyanates,
Modified zinc powder forms certain entanglement with epoxy molecule structure by the calixarenes of grafting up in whipping process,
The dispersion stabilization for promoting zinc powder in paint vehicle solves reunion of the zinc powder in resin, settlement issues；The present invention utilizes the third two
Alcohol methyl ether, propylene glycol methyl ether acetate reduce the viscosity of binder system as cosolvent.
The present invention uses water as solvent when constructing, and no pollution to the environment is easy for construction, harmless to construction personnel's health；Paint
Film rate of drying is fast, and adhesive force is good, high mechanical strength, and antiseptic property is excellent.It can apply in fields such as container, ships, make
For anti-corrosion primer.
Specific embodiment
Embodiment 1
(1) modification of zinc powder
0.8 kilogram of cup [6] aromatic hydrocarbons and 0.1 kilogram of isophorone diisocyanate are added to 18 kilograms of dimethylformamides
In, mechanical stirring back flow reaction 4 hours, 5 kilograms of nanoscale zinc powder are added into above-mentioned system, continues to be stirred at reflux 12 hours,
Recycling design filters, and washing dry, pulverize, and obtains modified zinc powder；
(2) by 50 parts by weight of E-44 aqueous epoxy resins, 4 parts by weight of AGE epoxy active diluent, 7 weight of propylene glycol monomethyl ether
It measures part mixing sufficiently, then modified 18 parts by weight of zinc powder obtained in step (1) is added thereto, 30 points are stirred at a temperature of 65 DEG C
Clock to get arrive component A；
(3) independent as component B after mixing 9 parts by weight of aqueous epoxy curing agent with 50 parts by weight of deionized water sufficiently
Packaging.
After film-forming, coating performance is as shown in table 1 through detecting.
Embodiment 2
(1) modification of zinc powder
1.0 kilograms of cup [8] aromatic hydrocarbons and 0.1 kilogram of isophorone diisocyanate are added to 18 kilograms of dimethylformamides
In, mechanical stirring back flow reaction 4 hours, 5 kilograms of nanoscale zinc powder are added into above-mentioned system, continues to be stirred at reflux 12 hours,
Recycling design filters, and washing dry, pulverize, and obtains modified zinc powder；
(2) with embodiment 1；
(3) with embodiment 1.
Film-forming process is same as Example 1, and coating performance is as shown in table 1 through detecting.
Comparative example 1
(1) modification of zinc powder
0.55 kilogram of cup [4] aromatic hydrocarbons and 0.1 kilogram of isophorone diisocyanate are added to 18 kilograms of dimethyl formyls
In amine, mechanical stirring back flow reaction 4 hours, 5 kilograms of nanoscale zinc powder are added into above-mentioned system, continues to be stirred at reflux 12 small
When, recycling design filters, and washing dry, pulverize, and obtains modified zinc powder；
(2) with embodiment 1；
(3) with embodiment 1.
Film-forming process is same as Example 1, and coating performance is as shown in table 1 through detecting.
Comparative example 2
Zinc powder is not modified, remaining component, processing step are same as Example 1：
(1) by 50 parts by weight of E-44 aqueous epoxy resins, 4 parts by weight of AGE epoxy active diluent, 7 weight of propylene glycol monomethyl ether
It measures part mixing sufficiently, then 18 parts by weight of nanoscale zinc powder is added thereto, stir 30 minutes at a temperature of 65 DEG C to get component is arrived
A；
(2) independent as component B after mixing 9 parts by weight of aqueous epoxy curing agent with 50 parts by weight of deionized water sufficiently
Packaging.
Film-forming process is same as Example 1, and coating performance is as shown in table 1 through detecting.
Table 1
| Specimen coding | Adhesive force | Impact resistance/cm | Salt water resistance | Resistance to neutral salt spray/h |
| Embodiment 1 | 1 | 50 | Pass through | 1600 |
| Embodiment 2 | 0 | > 50 | Pass through | 2000 |
| Comparative example 1 | 2 | 30 | Pass through | 450 |
| Comparative example 2 | 2 | 25 | Pass through | 400 |
Adhesive force is by the method measurement in ISO2409-1974；
Impact resistance is by the method measurement in GB/T1732-93；
Resistance to neutral salt spray is by the method measurement in GB/T1771-2007；
The detection of resistance to salt water is detection environment with Solute mass fraction 5%, 25 DEG C of temperature of sodium chloride solution, when detection
Between be 48 hours.
Compare the experimental result in table in each embodiment, compared to cup [6] aromatic hydrocarbons and cup [8] aromatic hydrocarbons, using cup [4] virtue
It can not almost play the role of promoting dispersion when hydrocarbon is as zinc powder modifying agent；And only both embodiment 1 and embodiment 2 are tested
As a result comparison it is also seen that：Cup [6] aromatic hydrocarbons will be significantly better than using the aromatic modified effect of cup [8].To this phenomenon, application
People thinks：It should be the calixarenes that is grafted on zinc powder during being stirred, cavity structure " is socketed " arrives to a certain degree
It is formed and is tangled on the molecule segment of epoxy resin, to promote dispersion of the zinc powder in resin matrix；Cup [4] aromatic hydrocarbons may be
Since cavity is smaller, it is virtually impossible to be formed and be socketed with epoxy segment, therefore promote the effect of dispersion very unsatisfactory.
Claims (7)
1. a kind of preparation method of water-base epoxy priming paint, it is characterised in that：The water-base epoxy priming paint is in parts by weight
It calculates, including following component,
The zinc powder modifying agent is cup [6] aromatic hydrocarbons or cup [8] aromatic hydrocarbons；
The preparation method is that
(1) modification of zinc powder
The zinc powder modifying agent and isocyanates are added in organic solvent, it is mechanical under conditions of temperature is 70~85 DEG C
It is stirred at reflux reaction 2~6 hours, zinc powder is added into above-mentioned system, continue to be stirred at reflux 8~15 hours, recycling design, mistake
Filter, washing, dry, pulverize, and obtain modified zinc powder,
The isocyanates is toluene di-isocyanate(TDI), isophorone diisocyanate, hexa-methylene -1,6- diisocyanate
Ester, Methylcyclohexyl diisocyanate or xylylene diisocyanate；
(2) aqueous epoxy resins, epoxide diluent, cosolvent are mixed sufficiently, then is added obtained in step (1) and changes thereto
Property zinc powder, 15~30 minutes are stirred at a temperature of 60~70 DEG C to get to component A；
(3) it after mixing aqueous epoxy curing agent with deionized water sufficiently, is individually packed as component B.
2. the preparation method of water-base epoxy priming paint as described in claim 1, it is characterised in that：The aqueous epoxy resins are ring
Oxygen resin E-40, E-42, E-44 or E-51.
3. the preparation method of water-base epoxy priming paint as described in claim 1, it is characterised in that：The epoxide diluent is AGE
Epoxy active diluent or BGE epoxy active diluent.
4. the preparation method of water-base epoxy priming paint as described in claim 1, it is characterised in that：The cosolvent is propylene glycol first
Ether or propylene glycol methyl ether acetate.
5. the preparation method of water-base epoxy priming paint as described in claim 1, it is characterised in that：The aqueous epoxy curing agent is
701 curing agent, WH900 curing agent or 721 curing agent.
6. the preparation method of water-base epoxy priming paint as described in claim 1, it is characterised in that：Isocyanide described in step (1)
The mass ratio of acid esters and zinc powder modifying agent is 0.2~0.4：1；The isocyanates is toluene di-isocyanate(TDI), isophorone two
Isocyanates, hexa-methylene -1,6- diisocyanate, Methylcyclohexyl diisocyanate or xylylene diisocyanate.
7. the preparation method of water-base epoxy priming paint as described in claim 1, it is characterised in that：Zinc powder described in step (1)
The mass ratio of modifying agent and organic solvent is 0.02~0.05：1, the organic solvent is ethyl acetate, chloroform or dimethyl methyl
Amide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312741.2A CN105838193B (en) | 2016-05-12 | 2016-05-12 | A kind of water-base epoxy priming paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312741.2A CN105838193B (en) | 2016-05-12 | 2016-05-12 | A kind of water-base epoxy priming paint |
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| CN105838193A CN105838193A (en) | 2016-08-10 |
| CN105838193B true CN105838193B (en) | 2018-11-20 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106336772A (en) * | 2016-08-26 | 2017-01-18 | 李水金 | Waterborne epoxy resin primer |
| CN108034294A (en) * | 2017-11-14 | 2018-05-15 | 广州擎天材料科技有限公司 | A kind of zinc slurry and its cladding process for being used to improve the secondary adhesive force of water-thinned epoxy zinc-rich coating |
| CN107987671A (en) * | 2017-12-11 | 2018-05-04 | 湖南太子化工涂料有限公司 | A kind of epoxy primer and its preparation method and application |
| CN109825169A (en) * | 2019-02-20 | 2019-05-31 | 上海振华重工（集团）常州油漆有限公司 | One kind quick-drying zinc rich primer and its preparation method and application in anhydrous epoxy |
| CN111073467B (en) * | 2019-12-20 | 2021-08-06 | 浙江中杭新材料科技有限公司 | Corrosion-resistant composite protective layer material for neodymium iron boron |
| CN115181445A (en) * | 2022-06-09 | 2022-10-14 | 中建材苏州防水研究院有限公司 | Modified zinc powder suitable for two-component water-based epoxy zinc-rich coating and preparation method and application thereof |
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| CN104789090A (en) * | 2015-04-22 | 2015-07-22 | 中航百慕新材料技术工程股份有限公司 | Flexible epoxy anticorrosive primer and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103725234B (en) * | 2013-12-03 | 2014-12-17 | 常州大学 | Calixarene modified attapulgite/urea resin composite adhesive and preparation method thereof |
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2016
- 2016-05-12 CN CN201610312741.2A patent/CN105838193B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| CN101525745A (en) * | 2009-04-03 | 2009-09-09 | 四川大学 | Metal surface treatment agent and printed wiring board with protecting film formed thereby |
| CN103183621A (en) * | 2011-12-30 | 2013-07-03 | 王炜 | Calix[4]arene derivative, non-phosphorus scale inhibition, dispersion and corrosion inhibition agent, preparation method and application |
| CN104371505A (en) * | 2014-12-10 | 2015-02-25 | 成都拜迪新材料有限公司 | Waterborne-epoxy micaceous-iron-oxide intermediate coat and preparation method thereof |
| CN104774526A (en) * | 2015-01-22 | 2015-07-15 | 南京长江涂料有限公司 | Room temperature-curing two-component aqueous epoxy zinc-rich primer |
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