CN110128917A - Low-VOC aqueous epoxy zinc rich primer and preparation method thereof - Google Patents
Low-VOC aqueous epoxy zinc rich primer and preparation method thereof Download PDFInfo
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- CN110128917A CN110128917A CN201910513399.6A CN201910513399A CN110128917A CN 110128917 A CN110128917 A CN 110128917A CN 201910513399 A CN201910513399 A CN 201910513399A CN 110128917 A CN110128917 A CN 110128917A
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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
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- 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
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
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- 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
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The present invention provides a kind of low-VOC aqueous epoxy zinc rich primer and preparation method thereof, which includes component A and B component, and the weight ratio of component A and B component is 2.5-3:1；Component A includes the raw material of following parts by weight: 0.5-2.5 parts of wetting dispersing agent, 2.5-5.5 parts of thickener, 80-100 parts of coalescing agent, 8-12 parts of levelling agent, 40-80 parts of anti-settling agent, 16-24 parts of talcum powder, 1500-1700 parts of zinc powder, epoxy hardener resin 50-70,10-14 parts of adhesion promoter, 1-10 parts of catalyst；B component includes the raw material of following parts by weight: 3-5 parts of thickener, 1-3 parts of wetting dispersing agent, 280-320 parts of modified bisphenol A type epoxy emulsion, 0.5-1.5 parts of defoaming agent etc..The storage stability of low-VOC aqueous epoxy zinc rich primer produced by the present invention is obviously improved, and VOC content significantly reduces.
Description
Technical field
The invention belongs to technical field of coatings, and in particular to a kind of low-VOC aqueous epoxy zinc rich primer and preparation method thereof.
Background technique
It is very high to the corrosion resistant degree of corrosion requirement of cabinet itself since container body will cope with marine harsh weather,
Country has stringent standard requirements to the erosion resistant coating of container surface.Since on April 1st, 2017, national standard dried food and nuts collection
The paint line of vanning manufacturer, is changed to aqueous coating system by solvent based coating system, to open aqueous collection
The first year for coating large-scale use of casing.Aqueous coating container matching system mainly includes water-thinned epoxy zinc-rich coating, aqueous
4 interior finishing coat, aqueous intermediate coat, water-based acrylic acid top-coat kinds.The large-scale promotion of aqueous coating container makes entire industry
Very big variation occurs for Coating Market, and the application of the environmental protection coating materials such as Water-borne modification, large arch dam has obtained large development, driven engineering
The industries such as machinery, transit equipment are strided forward to the big step of environmentally-friendly coating.
Water-based epoxy zinc-rich primer is to provide the main coating of corrosion-resistant, therefore the antiseptic property of the product, machinery to cabinet
Performance is formula designing points, while emphasis being wanted to take into account workability.Due to the presence of zinc powder, water-thinned epoxy zinc-rich coating can have
Effect ground carries out cathodic protection to cabinet, delays cabinet to corrode progress, therefore the system has obtained the consistent approval in case east.
But for the water-based epoxy zinc-rich primer VOC content used in the market in 200-300g/L, VOC content is higher, and aqueous
Epoxy zinc rich primer Zn content is high, and specific gravity is larger, causes container body storage stability poor, will divide within usual three months or so
Layer and agglomeration.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention provide a kind of low-VOC aqueous epoxy zinc rich primer and its
Preparation method, the soluble epoxide zinc rich primer VOC content is low, only 73g/L, and storage stability is good.
To achieve the above object, the technical solution adopted by the present invention to solve the technical problems is:
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 2.5-
3:1 is preferably in a proportion of 2.5:1；
Wherein, component A includes the raw material of following parts by weight: 0.5-2.5 parts of wetting dispersing agent, 2.5-5.5 parts of thickener, at
80-100 parts of film auxiliary agent, 8-12 parts of levelling agent, 40-80 parts of anti-settling agent, 16-24 parts of talcum powder, 1500-1700 parts of zinc powder, epoxy
Curing agent resin 50-70,10-14 parts of adhesion promoter, 1-10 parts of catalyst；
B component includes the raw material of following parts by weight: 40-80 parts of deionized water, 1-5 parts of thickener, wetting dispersing agent 1-3
Part, 350-430 parts of modified bisphenol A type epoxy emulsion, 0.5-1.5 parts of defoaming agent, 1-10 parts of anti-flash rusting agent.
Further, component A includes the raw material of following parts by weight: 2 parts of wetting dispersing agent, 5 parts of thickener, coalescing agent 90
Part, 10 parts of levelling agent, 62 parts of anti-settling agent, 20 parts of talcum powder, 1600 parts of zinc powder, 60 parts of epoxy hardener resin, adhesive force promote
12 parts of agent, 5 parts of catalyst.
Further, component A includes the raw material of following parts by weight: 1.5 parts of wetting dispersing agent, 4 parts of thickener, coalescing agent
90 parts, 10 parts of levelling agent, 62 parts of anti-settling agent, 20 parts of talcum powder, 1600 parts of zinc powder, 60 parts of epoxy hardener resin, attachment make every effort to promote
Into 12 parts of agent, 5 parts of catalyst.
Further, component A includes the raw material of following parts by weight: 1 part of wetting dispersing agent, 3 parts of thickener, coalescing agent 90
Part, 10 parts of levelling agent, 62 parts of anti-settling agent, 20 parts of talcum powder, 1600 parts of zinc powder, 60 parts of epoxy hardener resin, adhesive force promote
12 parts of agent, 5 parts of catalyst.
Further, B component includes the raw material of following parts by weight: 50 parts of deionized water, 2 parts of thickener, wetting dispersing agent 1
Part, 390 parts of modified bisphenol A type epoxy emulsion, 1 part of defoaming agent, 5 parts of anti-flash rusting agent.
Further, B component includes the raw material of following parts by weight: 50 parts of deionized water, 3 parts of thickener, wetting dispersing agent
1.5 parts, 390 parts of modified bisphenol A type epoxy emulsion, 1 part of defoaming agent, 5 parts of anti-flash rusting agent.
Further, B component includes the raw material of following parts by weight: 50 parts of deionized water, 4 parts of thickener, wetting dispersing agent 2
Part, 390 parts of modified bisphenol A type epoxy emulsion, 1 part of defoaming agent, 5 parts of anti-flash rusting agent.
Further, in component A wetting dispersing agent be De Qian company Levelol W-409；Thickener is cellulose, excellent
It is selected as the NATROSOL Plus 330 of Hercules company, the U.S.；Coalescing agent is isopropanol, propylene glycol, butanediol and dipropyl
At least one of glycol butyl ether；Levelling agent is the BYK-AQ of BYK company；Anti-settling agent is the Bentone of Elementis company
The AEROSIL R816 of AD and/or Degussa company；Epoxy hardener resin is ANCAMINE 1618；Adhesion promoter is
The ADDID 900 of TEGO company；Catalyst is the CYCAT 4045 of Cytec company.
Further, thickener is cellulose, preferably the NATROSOL Plus of U.S. Hercules company in B component
330；Wetting dispersing agent is the Levelol W-409 of De Qian company；Modified bisphenol A type epoxy emulsion is HEXION company
Epikote6520-WH-53A；Defoaming agent is the 901W of TEGO company；Anti- flash rusting agent is the SER-AD FA of Ashland company
179。
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener are mixed, 400-600r/min stirs 20-30min；
B. coalescing agent is added into step a gains while stirring, is then stirred under the conditions of 1400-1600r/min
3-4h is to fineness less than 20 μm；
C. levelling agent, anti-settling agent, talcum powder and zinc powder is added into step b gains while stirring, then in 800-
20-40min is stirred under the conditions of 1200r/min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring,
20-40min is stirred under the conditions of 800-1200r/min, control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. deionized water, thickener and wetting dispersing agent are mixed, 1400-1600r/min stirs 20-40min to fineness
Less than 20 μm；
B. modified bisphenol A type epoxy emulsion, defoaming agent and anti-flash rusting agent is added into step a gains while stirring,
800-1000r/min stirs 20-40min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
The corrosion-inhibiting coating that above-mentioned low-VOC aqueous epoxy zinc rich primer can be used as container uses.
Low-VOC aqueous epoxy zinc rich primer provided by the invention and preparation method thereof, has the advantages that
(1) present invention selects alcohol ethers cosolvent, and the NATROSOL Plus 330 for matching Aqualon company, which is done, to be increased
Thick dose, NATROSOL Plus 330 is association type cellulose ether, contains a large amount of hydrophobic grouping on molecule segment, in water
Aggregation forms reticular structure, to improve aqueous viscosity, association can also be played in terms of thickening with other components in coating,
So that product has fabulous storage stability, while association is destroyed under shear action, and system viscosity reduces, and is made
Obtain product has good application property again.
(2) Bentone AD of present invention selection Elementis company, the AEROSIL R816 of Degussa company are done anti-
Heavy agent, Bentone AD is high purity lithium montmorillonite type auxiliary rheological agents, has efficient shear shinning effect, is conducive to produce the time-division
It dissipates and disperses when constructing, and there is efficient result of prevention；AEROSIL R816 is hydrophobic fumed silica, has lower suction
Moist and good dispersibility.Bentone AD and AEROSIL R816 are used cooperatively, when can effectively improve production and construction
Dispersibility, improve the storage stability of system.
(3) present invention selects amine curing agent and zinc powder in same component (component A), since amine curing agent is less,
In order to improve amine resins to the covered effect of zinc powder, the pigment of component A system is reduced, prevents cladding difference from causing zinc powder knot
Block improves system storage stability.
(4) part thickener is transferred in B component by the present invention, prevents component A from reducing viscosity too disaster due to cosolvent
With dispersion.
Specific embodiment
Embodiment 1
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 5:2.
Wherein, component A includes the raw material of following parts by weight: 2 parts of wetting dispersing agent Levelol W-409, thickener
330 5 parts of NATROSOL Plus, 90 parts of coalescing agent isopropanol, 10 parts of levelling agent BYK-AQ, anti-settling agent Bentone AD
60 parts, 2 parts of anti-settling agent AEROSIL R816,20 parts of 8500 mesh superfine talcum powder, 1600 parts of 800 mesh zinc powder, epoxy hardener tree
1,618 60 parts of rouge ANCAMINE, 900 12 parts of adhesion promoter ADDID, 4,045 5 parts of catalyst CYCAT；
B component includes the raw material of following parts by weight: 50 parts of deionized water, 3302 parts of thickener NATROSOL Plus, profit
1 part of hygroscopic water powder Levelol W-409,390 parts of modified bisphenol A type epoxy emulsion Epikote6520-WH-53A, defoaming agent
It is 1 part of TEGO-901W, 1795 parts of flash rusting agent SER-AD FA anti-.
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener mixing are added in Xiang Yi little cylinder, 500r/min stirs at low speed 30min；
B. coalescing agent is put into large cylinder, slowly puts into step a gains while stirring, finishes rear 1500r/min high
Speed stirring 3h is to fineness less than 20 μm；
C. levelling agent, anti-settling agent, 8500 mesh superfine talcum powders and 800 mesh zinc are added into step b gains while stirring
Powder, then 1000r/min stirs 30min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring,
1000r/min stirs 30min, and control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. deionized water, thickener and wetting dispersing agent mixing, 1500r/min high-speed stirred are put into a clean cylinder
30min is to fineness less than 20 μm；
B. modified bisphenol A type epoxy emulsion, defoaming agent and anti-flash rusting agent is added into step a gains while stirring,
800r/min stirs 30min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
Embodiment 2
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 5:2；
Wherein, component A includes the raw material of following parts by weight: 1.5 parts of wetting dispersing agent Levelol W-409, thickener
330 4 parts of NATROSOL Plus, 90 parts of coalescing agent isopropanol, 10 parts of levelling agent BYK-AQ, anti-settling agent Bentone AD
60 parts, 2 parts of anti-settling agent AEROSIL R816,20 parts of 8500 mesh superfine talcum powder, 1600 parts of 800 mesh zinc powder, epoxy hardener tree
1,618 60 parts of rouge ANCAMINE, 900 12 parts of adhesion promoter ADDID, 4,045 5 parts of catalyst CYCAT；
B component includes the raw material of following parts by weight: 50 parts of deionized water, 3303 parts of thickener NATROSOL Plus, profit
1.5 parts of hygroscopic water powder Levelol W-409,390 parts of modified bisphenol A type epoxy emulsion Epikote6520-WH-53A, defoaming
It is 1 part of agent TEGO-901W, 1795 parts of flash rusting agent SER-AD FA anti-.
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener mixing are added in Xiang Yi little cylinder, 500r/min stirs at low speed 30min；
B. coalescing agent is put into large cylinder, slowly puts into step a gains while stirring, finishes rear 1500r/min high
Speed stirring 3h is to fineness less than 20 μm；
C. levelling agent, anti-settling agent, 8500 mesh superfine talcum powders and 800 mesh zinc are added into step b gains while stirring
Powder, then 1000r/min stirs 30min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring,
1000r/min stirs 30min, and control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. deionized water, thickener and wetting dispersing agent mixing, 1500r/min high-speed stirred are put into a clean cylinder
30min is to fineness less than 20 μm；
B. modified bisphenol A type epoxy emulsion, defoaming agent and anti-flash rusting agent is added into step a gains while stirring,
800r/min stirs 30min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
Embodiment 3
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 5:2；
Wherein, component A includes the raw material of following parts by weight: 1 part of wetting dispersing agent Levelol W-409, thickener
330 3 parts of NATROSOL Plus, 90 parts of coalescing agent isopropanol, 10 parts of levelling agent BYK-AQ, anti-settling agent Bentone AD
60 parts, 2 parts of anti-settling agent AEROSIL R816,20 parts of 8500 mesh superfine talcum powder, 1600 parts of 800 mesh zinc powder, epoxy hardener tree
1,618 60 parts of rouge ANCAMINE, 900 12 parts of adhesion promoter ADDID, 4,045 5 parts of catalyst CYCAT；
B component includes the raw material of following parts by weight: 50 parts of deionized water, 3304 parts of thickener NATROSOL Plus, profit
2 parts of hygroscopic water powder Levelol W-409,390 parts of modified bisphenol A type epoxy emulsion Epikote6520-WH-53A, defoaming agent
It is 1 part of TEGO-901W, 1795 parts of flash rusting agent SER-AD FA anti-.
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener mixing are added in Xiang Yi little cylinder, 500r/min stirs at low speed 30min；
B. coalescing agent is put into large cylinder, slowly puts into step a gains while stirring, finishes rear 1500r/min high
Speed stirring 3h is to fineness less than 20 μm；
C. levelling agent, anti-settling agent, 8500 mesh superfine talcum powders and 800 mesh zinc are added into step b gains while stirring
Powder, then 1000r/min stirs 30min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring,
1000r/min stirs 30min, and control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. deionized water, thickener and wetting dispersing agent mixing, 1500r/min high-speed stirred are put into a clean cylinder
30min is to fineness less than 20 μm；
B. modified bisphenol A type epoxy emulsion, defoaming agent and anti-flash rusting agent is added into step a gains while stirring,
800r/min stirs 30min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
Comparative example 1
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 5:2.
Wherein, component A includes the raw material of following parts by weight: 3 parts of wetting dispersing agent Levelol W-409, thickener
330 7 parts of NATROSOL Plus, 180 parts of coalescing agent isopropanol, 10 parts of levelling agent BYK-AQ, anti-settling agent Bentone AD
60 parts, 2 parts of anti-settling agent AEROSIL R816,20 parts of 8500 mesh superfine talcum powder, 1500 parts of 800 mesh zinc powder, epoxy hardener tree
1,618 40 parts of rouge ANCAMINE, 900 12 parts of adhesion promoter ADDID, 4,045 5 parts of catalyst CYCAT；
B component includes the raw material of following parts by weight: 50 parts of deionized water, modified bisphenol A type epoxy emulsion
It is 260 parts of Epikote6520-WH-53A, 1 part of defoaming agent TEGO-901W, 1795 parts of flash rusting agent SER-AD FA anti-.
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener mixing are added in Xiang Yi little cylinder, 500r/min stirs at low speed 30min；
B. coalescing agent is put into large cylinder, slowly puts into step a gains while stirring, finishes rear 1500r/min high
Speed stirring 3h is to fineness less than 20 μm；
C. levelling agent, anti-settling agent, 8500 mesh superfine talcum powders and 800 mesh zinc are added into step b gains while stirring
Powder, then 1000r/min stirs 30min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring,
1000r/min stirs 30min, and control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. put into deionized water into a clean cylinder, while stirring be added modified bisphenol A type epoxy emulsion, defoaming agent and
Anti- flash rusting agent, 800r/min stir 30min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
Comparative example 2
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 5:2.
Wherein, component A includes the raw material of following parts by weight: 3 parts of wetting dispersing agent Levelol W-409, thickener
330 7 parts of NATROSOL Plus, 90 parts of coalescing agent isopropanol, 10 parts of levelling agent BYK-AQ, anti-settling agent Bentone AD
60 parts, 2 parts of anti-settling agent AEROSIL R816,20 parts of 8500 mesh superfine talcum powder, 1500 parts of 800 mesh zinc powder, epoxy hardener tree
1,618 40 parts of rouge ANCAMINE, 900 12 parts of adhesion promoter ADDID, 4,045 5 parts of catalyst CYCAT；
B component includes the raw material of following parts by weight: 50 parts of deionized water, modified bisphenol A type epoxy emulsion
It is 260 parts of Epikote6520-WH-53A, 1 part of defoaming agent TEGO-901W, 179 5 parts of flash rusting agent SER-AD FA anti-.
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener mixing are added in Xiang Yi little cylinder, 500r/min stirs at low speed 30min；
B. coalescing agent is put into large cylinder, slowly puts into step a gains while stirring, finishes rear 1500r/min high
Speed stirring 3h is to fineness less than 20 μm；
C. levelling agent, anti-settling agent, 8500 mesh superfine talcum powders and 800 mesh zinc are added into step b gains while stirring
Powder, then 1000r/min stirs 30min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring,
1000r/min stirs 30min, and control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. put into deionized water into a clean cylinder, while stirring be added modified bisphenol A type epoxy emulsion, defoaming agent and
30min is stirred in anti-flash rusting agent；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
Comparative example 3
The weight ratio of a kind of low-VOC aqueous epoxy zinc rich primer, including component A and B component, component A and B component is 5:2；
Wherein, component A includes the raw material of following parts by weight: 90 parts of coalescing agent isopropanol, 10 parts of levelling agent BYK-AQ,
60 parts of anti-settling agent Bentone AD, 2 parts of anti-settling agent AEROSIL R816,20 parts of 8500 mesh superfine talcum powder, 800 mesh zinc powders
1500 parts, 1,618 40 parts of epoxy hardener Resin A NCAMINE, 900 12 parts of adhesion promoter ADDID, catalyst
4,045 5 parts of CYCAT；
B component includes the raw material of following parts by weight: 50 parts of deionized water, 330 7 parts of thickener NATROSOL Plus, profit
3 parts of hygroscopic water powder Levelol W-409,260 parts of modified bisphenol A type epoxy emulsion Epikote6520-WH-53A, defoaming agent
It is 1 part of TEGO-901W, 179 5 parts of flash rusting agent SER-AD FA anti-.
The preparation method of above-mentioned low-VOC aqueous epoxy zinc rich primer, comprising the following steps:
(1) component A is prepared
A. will coalescing agent put into large cylinder in, while stirring be added levelling agent, anti-settling agent, 8500 mesh superfine talcum powders and
800 mesh zinc powders, then 1000r/min stirs 30min to fineness less than 30 μm；
B. epoxy hardener resin, adhesion promoter and catalyst is added into step a gains while stirring,
1000r/min stirs 30min, and control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. deionized water, thickener and wetting dispersing agent mixing, 1500r/min high-speed stirred are put into a clean cylinder
30min is to fineness less than 20 μm；
B. modified bisphenol A type epoxy emulsion, defoaming agent and anti-flash rusting agent is added into step a gains while stirring,
800r/min stirs 30min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
Performance detection is carried out to low-VOC aqueous epoxy zinc rich primer obtained above, testing result is as follows:
The present invention reduces solvent and makes VOC content lower than 100g/L, using a variety of thickeners by adjusting formula and technique
With the mode of anti-settling agent compounding, the storage stability of product is improved.As seen from the above table, low-VOC aqueous epoxy produced by the present invention
The storage stability of zinc rich primer is obviously improved, and VOC content significantly reduces, can be obvious after being used for container
Improve the storage stability of container body.
Claims (10)
1. low-VOC aqueous epoxy zinc rich primer, which is characterized in that including component A and B component, the weight ratio of component A and B component
For 2.5-3:1；
Wherein, component A includes the raw material of following parts by weight: 0.5-2.5 parts of wetting dispersing agent, 2.5-5.5 parts of thickener, film forming help
80-100 parts of agent, 8-12 parts of levelling agent, 40-80 parts of anti-settling agent, 16-24 parts of talcum powder, 1500-1700 parts of zinc powder, curable epoxide
Agent resin 50-70,10-14 parts of adhesion promoter, 1-10 parts of catalyst；
B component includes the raw material of following parts by weight: 40-80 parts of deionized water, 1-3 parts of wetting dispersing agent, changes 1-5 parts of thickener
Property 350-430 parts of bisphenol type epoxy lotion, 0.5-1.5 parts of defoaming agent, 1-10 parts of anti-flash rusting agent.
2. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that component A includes following parts by weight
Raw material: 2 parts of wetting dispersing agent, 5 parts of thickener, 90 parts of coalescing agent, 10 parts of levelling agent, 62 parts of anti-settling agent, 20 parts of talcum powder,
1600 parts of zinc powder, 60 parts of epoxy hardener resin, 12 parts of adhesion promoter, 5 parts of catalyst.
3. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that component A includes following parts by weight
Raw material: 1.5 parts of wetting dispersing agent, 4 parts of thickener, 90 parts of coalescing agent, 10 parts of levelling agent, 62 parts of anti-settling agent, talcum powder 20
Part, 1600 parts of zinc powder, 60 parts of epoxy hardener resin, 12 parts of adhesion promoter, 5 parts of catalyst.
4. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that component A includes following parts by weight
Raw material: 1 part of wetting dispersing agent, 3 parts of thickener, 90 parts of coalescing agent, 10 parts of levelling agent, 62 parts of anti-settling agent, 20 parts of talcum powder,
1600 parts of zinc powder, 60 parts of epoxy hardener resin, 12 parts of adhesion promoter, 5 parts of catalyst.
5. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that B component includes following parts by weight
Raw material: 50 parts of deionized water, 2 parts of thickener, 1 part of wetting dispersing agent, 390 parts of modified bisphenol A type epoxy emulsion, defoaming agent 1
Part, 5 parts of anti-flash rusting agent.
6. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that B component includes following parts by weight
Raw material: 50 parts of deionized water, 3 parts of thickener, 1.5 parts of wetting dispersing agent, 390 parts of modified bisphenol A type epoxy emulsion, defoaming agent
1 part, 5 parts of anti-flash rusting agent.
7. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that B component includes following parts by weight
Raw material: 50 parts of deionized water, 4 parts of thickener, 2 parts of wetting dispersing agent, 390 parts of modified bisphenol A type epoxy emulsion, defoaming agent 1
Part, 5 parts of anti-flash rusting agent.
8. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that wetting dispersing agent is in component A
The Levelol W-409 of De Qian company；Thickener is cellulose, preferably the NATROSOL Plus of U.S. Hercules company
330；Coalescing agent is at least one of isopropanol, propylene glycol, butanediol and dipropylene；Levelling agent is BYK company
BYK-AQ；Anti-settling agent is the AEROSIL R816 of the Bentone AD and/or Degussa company of Elementis company；Epoxy
Curing agent resin is ANCAMINE 1618；Adhesion promoter is the ADDID 900 of TEGO company；Catalyst is Cytec company
CYCAT 4045.
9. low-VOC aqueous epoxy zinc rich primer according to claim 1, which is characterized in that thickener is fiber in B component
Element, preferably the NATROSOL Plus 330 of U.S. Hercules company；Wetting dispersing agent is the LevelolW- of De Qian company
409；Modified bisphenol A type epoxy emulsion is the Epikote6520-WH-53A of HEXION company；Defoaming agent is TEGO company
901W；Anti- flash rusting agent is the SER-AD FA 179 of Ashland company.
10. the preparation method of the described in any item low-VOC aqueous epoxy zinc rich primers of claim 1-9, which is characterized in that including
Following steps:
(1) component A is prepared
A. wetting dispersing agent and thickener are mixed, 400-600r/min stirs 20-30min；
B. coalescing agent is added into step a gains while stirring, then stirs 3-4h under the conditions of 1400-1600r/min
To fineness less than 20 μm；
C. levelling agent, anti-settling agent, talcum powder and zinc powder is added into step b gains while stirring, then in 800-1200r/
20-40min is stirred under the conditions of min to fineness less than 30 μm；
D. epoxy hardener resin, adhesion promoter and catalyst is added into step c gains while stirring, in 800-
20-40min is stirred under the conditions of 1200r/min, control mixture temperature is lower than 50 DEG C in whipping process；
(2) B component is prepared
A. deionized water, thickener and wetting dispersing agent are mixed, 1400-1600r/min stirring 20-40min to fineness is less than
20μm；
B. modified bisphenol A type epoxy emulsion, defoaming agent and anti-flash rusting agent, 800- is added into step a gains while stirring
1000r/min stirs 20-40min；
(3) component A and B component are uniformly mixed, low-VOC aqueous epoxy zinc rich primer is made.
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| CN114106608A (en) * | 2021-12-10 | 2022-03-01 | 上海华谊精细化工有限公司 | Low-VOC (volatile organic compound) water-based two-component epoxy zinc-rich coating and preparation method thereof |
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Application publication date: 20190816 |