CN108395811A - A kind of high-performance high solid content aqueous double-component epoxy coating and preparation method - Google Patents
A kind of high-performance high solid content aqueous double-component epoxy coating and preparation method Download PDFInfo
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- CN108395811A CN108395811A CN201810244319.7A CN201810244319A CN108395811A CN 108395811 A CN108395811 A CN 108395811A CN 201810244319 A CN201810244319 A CN 201810244319A CN 108395811 A CN108395811 A CN 108395811A
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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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- 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
- C09D5/082—Anti-corrosive paints characterised by the anti-corrosive pigment
- C09D5/084—Inorganic compounds
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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
- C09D7/41—Organic pigments; Organic dyes
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
Abstract
The invention discloses a kind of high-performance high solid content aqueous double-component epoxy coating and preparation methods, including component A：Aqueous epoxy emulsion, modified zinc phosphate, kaolin, precipitated super-fine barium sulfate, permanent violet slurry, dispersant A and B, antifoaming agent A and B, auxiliary rheological agents A and B, levelling agent, deionized water；B component：Epoxy hardener, deionized water, dumb light slurry；The component A and B component are according to 2.7:1 ratio mixing.The binding force of product and matrix of the present invention is strong, has higher Corrosion Protection, has preferable adhesive force and certain decoration performance to the machining surface of metal part；The present invention disposably can be at thicker coating thickness, and product film is transparent, dumb light, can require be allocated according to different colors, integrates the function of anti-corrosion corrosion, mechanical performance and decoration, reduce production cost, reduce VOC emission.
Description
Technical field
The present invention relates to a kind of with anticorrosive property, mechanical performance and the engine assembly partial painting painting for decorating performance
Material and preparation method, belong to anticorrosive paint technology field.
Background technology
Exposed machining surface after automobile engine assembly, as the engine as final coating after a coating
Coating, there are many domestic aqueous engine coating products, but can not meet simultaneously the adhesive force to bright and clean machining surface,
The requirement of excellent anti-corrosion ability and preferable appearance of film.In the fabrication process, some producers are using water base for automobile engine
Antirust agent realizes the rust prevention during manufacture of component and blank, and whole spray painting is carried out after assembly.However, for can not be whole after assembly
The engine of spray painting, it is necessary to using blank elder generation primer spray, be machined out and assemble again.Automobile engine after assembly, by
The priming paint for having used antiseptic property excellent early period, and engine does not have to consider paint film due to vehicle body covering during use
Ageing-resistant performance.
Invention content
The technical problem to be solved by the present invention is in view of the defects existing in the prior art, provide a kind of high-performance compared with Gao Gu
The aqueous double-component epoxy coating and preparation method of body content.
To solve this technical problem, the present invention provides a kind of paintings of high-performance high solid content aqueous double-component epoxy
Material, including component A and B component, the component A and B component are according to 2.7:1 ratio mixing；
The component A ingredient and weight percent are：
The B component ingredient and weight percent are：
Optimization formula：
The component A ingredient and weight percent are：
The B component ingredient and weight percent are：
The present invention also provides a kind of preparation methods of high-performance high solid content aqueous double-component epoxy coating, including
Following steps：
1) component A is prepared：WB6001 aqueous epoxy emulsions are added into deionized water, are stirred evenly, rotating speed is controlled in 400r/
Min is slowly added to antifoaming agent A (being added with the water thinning of equivalent), dispersant A and dispersant B, stirs evenly, rotating speed control exists
400r/min adds the filler modified trbasic zinc phosphate of antirust, kaolin and precipitated super-fine barium sulfate, stirs evenly, mixing speed control
It is ground to fineness after 500-600r/min processed, stirring 30min and reaches 30um, control grinding temperature is no more than 50 in process of lapping
DEG C, it if temperature is excessively high, first shuts down, is ground again by cooling mill body temperature is down to after 50 DEG C.After fineness of grind qualification,
Add antifoaming agent B, levelling agent BYK-346, auxiliary rheological agents A, auxiliary rheological agents B, mixing speed is controlled in 500r/min, adjust to
80-100s, the amount of auxiliary rheological agents and the dosage of deionized water need to be adjusted according to viscosity, and a small amount of mill base is added, and stirring is equal
Even, the addition of mill base amount strictly controls dosage, and no it will cause batch color distortion is larger；
2) B component is prepared：First epoxy hardener and water are stirred evenly, a certain amount of dumb light is added in rotating speed 400r/min
Slurry stirs 10min, speed of agitator 500-800r/min；
3) by component A and B component according to 2.7:1 ratio mixing.
The present invention also provides a kind of coating process of high-performance high solid content aqueous double-component epoxy coating, including
Ensure workpiece surface oil-free, dustless → spraying → drying.
Advantageous effect：Present invention employs a kind of completely new formulation for coating material, the preparation method from coating and coating process control
System, keeps the binding force of product and matrix strong, has higher Corrosion Protection, has preferably to the machining surface of metal part
Adhesive force and certain decoration performance, be directed to automobile engine assembly assembly line local coating use, select antifoaming agent,
The suitable auxiliary agents such as auxiliary rheological agents, dispersant improve the feasibility of making and construction；The present invention disposably can be at thicker film
Thickness, product film is transparent, dumb light, can require be allocated according to different colors, collects anti-corrosion corrosion, mechanical performance and dress
The function of decorations does not influence appearance not only in one, the appearance extraordinary image wax of paint film, local coating, but also has decoration effect well
Fruit improves the appearance class of product, can not have to, to engine assembly integral spray finishing coat, reduce production cost in this way,
Reduce VOC emission.
Specific implementation mode
The present invention provides a kind of aqueous double-component epoxy coatings of the higher construction solid content of high-performance, including component A
And B component, the component A and B component are according to 2.7:1 ratio mixing.
Embodiment one：
Each component content is as follows：
1, component A ingredient and weight percent are：
2, B component ingredient and weight percent are：
Preparation method is as follows：
1) component A is prepared：WB6001 aqueous epoxy emulsions are added into deionized water, are stirred evenly, rotating speed is controlled in 400r/
Min is slowly added to antifoaming agent A (being added with the water thinning of equivalent), dispersant A and dispersant B, stirs evenly, rotating speed control exists
400r/min adds the filler modified trbasic zinc phosphate of antirust, kaolin and precipitated super-fine barium sulfate, stirs evenly, mixing speed control
It is ground to fineness after 500-600r/min processed, stirring 30min and reaches 30um, control grinding temperature is no more than 50 in process of lapping
DEG C, it if temperature is excessively high, first shuts down, is ground again by cooling mill body temperature is down to after 50 DEG C.After fineness of grind qualification,
Add antifoaming agent B, levelling agent BYK-346, auxiliary rheological agents A, auxiliary rheological agents B, mixing speed is controlled in 500r/min, adjust to
80-100s, the amount of auxiliary rheological agents and the dosage of deionized water need to be adjusted according to viscosity, and a small amount of mill base is added, and stirring is equal
Even, the addition of mill base amount strictly controls dosage, and no it will cause batch color distortion is larger；
2) B component is prepared：First epoxy hardener and water are stirred evenly, a certain amount of dumb light is added in rotating speed 400r/min
Slurry stirs 10min, speed of agitator 500-800r/min；
3) by component A and B component according to 2.7:1 ratio mixing, after the mixing of two components to obtain the final product.
Through experiment, effective storage life reaches for 24 hours, superior performance, and salt fog reaches 240h (drawing fork) (film thickness is in 40um).
Embodiment two
Each component content is as follows：
1, component A ingredient and weight percent are：
2, B component ingredient and weight percent are：
Preparation method is the same as embodiment one.
The influence of properties of product：Film thickness can suitably increase 2-4 microns, but former paint is easy to sink to the bottom, and storage characteristics are deteriorated, and fineness is returned
Slightly；Salt fog is affected to some extent simultaneously, can reduce 10-20%, chemical resistance can be deteriorated, and especially water resistance can reduce 5-
8%
Embodiment three
Each component content is as follows：
1, component A ingredient and weight percent are：
2, B component ingredient and weight percent are：
Preparation method is the same as embodiment one.
The influence of properties of product：Sagging is easy tod produce, film is not easy, dryness suitably slows down, and surface drying can extend 5-10min,
Gloss is higher, and salt fog resistance reduces 5-10%.
The present invention also provides a kind of application sides of the aqueous double-component epoxy coating of the higher construction solid content of high-performance
Method, including ensure workpiece surface oil-free, dustless → spraying → drying.This method is easy to operate, sprays and is easy upper film, with Typical spray
Mode is similar, because its paint film sheet is as dumb light, can also be operated when humidity is excessive.
The suitable auxiliary agents such as present invention selection antifoaming agent, auxiliary rheological agents, dispersant improve the feasibility of making and construction.
The working mechanism of the present invention：
Purposes of the present invention as engine priming paint selects corrosion-resistant, good mechanical property WB6001 epoxy resin as A
The matrix resin of component selects ARADUR3986 to do according to the room temperature of coating process or the process characteristic of low-temperature setting in formula
For B component.After A, B component mixing, the network polymers of generating structure densification.A large amount of polarity is carried on epoxy main chains
Hydroxyl, hydroxyl and metal surface form strong chemical bond, and metallic matrix is made to combine closely with primary coat interlayer, reach with it is bright and clean
There is preferable adhesive force on surface.The present invention can be controlled effectively by the range of the relative molecular mass of control epoxy resin
Hydroxyl value and epoxide number, and then the binding force controlled between performance, product and the matrix of product is reached by the use of suitable auxiliary agents
To higher construction solid content and it is very beneficial for site operation.
Present invention employs a kind of completely new formulation for coating material, keep the binding force of product and matrix strong, have higher anti-corrosion
Corrosion energy has preferable adhesive force and certain decoration performance to the machining surface of metal part, is directed to car engine
The local coating of machine general assembly line uses, and the present invention disposably can be at thicker coating thickness, and product film is transparent, dumb light,
Can require be allocated according to different colors, integrate the function of anti-corrosion corrosion, mechanical performance and decoration, paint film it is outer
Extraordinary image wax is seen, local coating does not influence appearance not only, but also has good decorative effect, improves the appearance shelves of product
It is secondary, it can not have to, to engine assembly integral spray finishing coat, reduce production cost, reduce VOC emission in this way.
The embodiment above of the present invention, is merely illustrative, be not it is only, it is all within the scope of the present invention or it is equivalent this
Change in the range of invention is surrounded by the present invention.
Claims (4)
1. a kind of high-performance high solid content aqueous double-component epoxy coating, it is characterised in that：Including component A and B component, institute
Component A and B component are stated according to 2.7:1 ratio mixing；
The component A ingredient and weight percent are：
The B component ingredient and weight percent are：
2. high-performance high solid content aqueous double-component epoxy coating according to claim 1, it is characterised in that：
The component A ingredient and weight percent are：
The B component ingredient and weight percent are：
3. a kind of preparation method of high-performance high solid content aqueous double-component epoxy coating as claimed in claim 1 or 2,
It is characterized in that：Include the following steps：
1) component A is prepared：WB6001 aqueous epoxy emulsions are added into deionized water, are stirred evenly, rotating speed control is delayed in 400r/min
It is slow that antifoaming agent A (being added with the water thinning of equivalent), dispersant A and dispersant B is added, it stirs evenly, rotating speed is controlled in 400r/
Min adds the filler modified trbasic zinc phosphate of antirust, kaolin and precipitated super-fine barium sulfate, stirs evenly, and mixing speed controls 500-
It is ground to fineness after 600r/min, stirring 30min and reaches 30um, control grinding temperature is no more than 50 DEG C, such as temperature in process of lapping
It spends height then first to shut down, be ground again by cooling mill body temperature is down to after 50 DEG C.After fineness of grind qualification, adds and disappear
Infusion B, levelling agent BYK-346, auxiliary rheological agents A, auxiliary rheological agents B, mixing speed are controlled in 500r/min, are adjusted to 80-100s,
The amount of its auxiliary rheological agents and the dosage of deionized water need to be adjusted according to viscosity, and a small amount of mill base is added, stirs evenly, color
The addition of slurry amount strictly controls dosage, and no it will cause batch color distortion is larger；
2) B component is prepared：First epoxy hardener and water are stirred evenly, a certain amount of dumb light slurry is added in rotating speed 400r/min, stirs
Mix 10min, speed of agitator 500-800r/min；
3) by component A and B component according to 2.7:1 ratio mixing.
4. a kind of coating process of high-performance high solid content aqueous double-component epoxy coating as claimed in claim 1 or 2,
It is characterized in that：Ensure workpiece surface oil-free, dustless → spraying → drying.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810244319.7A CN108395811A (en) | 2018-03-23 | 2018-03-23 | A kind of high-performance high solid content aqueous double-component epoxy coating and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810244319.7A CN108395811A (en) | 2018-03-23 | 2018-03-23 | A kind of high-performance high solid content aqueous double-component epoxy coating and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094572A (en) * | 2020-09-18 | 2020-12-18 | 重庆艾普防腐技术有限公司 | Novel water-based epoxy coating for ship engine shell and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146284A (en) * | 2012-12-21 | 2013-06-12 | 新疆红山涂料有限公司 | Water-based epoxy anti-corrosion primer coatings |
-
2018
- 2018-03-23 CN CN201810244319.7A patent/CN108395811A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146284A (en) * | 2012-12-21 | 2013-06-12 | 新疆红山涂料有限公司 | Water-based epoxy anti-corrosion primer coatings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094572A (en) * | 2020-09-18 | 2020-12-18 | 重庆艾普防腐技术有限公司 | Novel water-based epoxy coating for ship engine shell and preparation method thereof |
| CN112094572B (en) * | 2020-09-18 | 2022-05-31 | 重庆艾普防腐技术有限公司 | Waterborne epoxy coating for ship engine shell and preparation method thereof |
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Application publication date: 20180814 |