CN108084844A - Anticorrosive coating composition and its preparation method and application - Google Patents
Anticorrosive coating composition and its preparation method and application Download PDFInfo
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- CN108084844A CN108084844A CN201711404964.2A CN201711404964A CN108084844A CN 108084844 A CN108084844 A CN 108084844A CN 201711404964 A CN201711404964 A CN 201711404964A CN 108084844 A CN108084844 A CN 108084844A
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- weight
- coating composition
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- anticorrosive coating
- diisocyanate
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/34—Carboxylic acids; Esters thereof with monohydroxyl compounds
- C08G18/348—Hydroxycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to technical field of coatings, the invention discloses a kind of anticorrosive coating composition and its application, which contains 30 50 parts by weight of bisphenol A type epoxy resin, 1 10 parts by weight of polyester resin, 0.5 5 parts by weight of 10 20 parts by weight of titanium-iron powder, 0.5 5 parts by weight of isocyanate ester compound and polyester polyol.The anticorrosive coating composition of the present invention has good anti-corrosion and Corrosion Protection, suitable for the shell protection of the shell of electronic equipment, the especially household electrical appliance of high quality requirement.
Description
Technical field
The present invention relates to technical field of coatings, and in particular to a kind of anticorrosive coating composition and its preparation method and application.
Background technology
In recent years, with the continuous development of white goods industry, higher requirement is proposed with coating to its incrustation.
It is although easy to use usually using aqueous rust-proof coatings at present, it is cheap, but because containing the noxious materials such as chromate, to operation
Personnel's harm is larger, and such properties of product are single, it is impossible to meet the antirust requirement of household electrical appliance high quality.
The content of the invention
The purpose of the invention is to overcome the problems, such as the coating composition poor performance of the prior art, a kind of antirust is provided and is applied
Feed composition and preparation method thereof, which has good anti-corrosion and Corrosion Protection, suitable for electronics
The shell protection of the household electrical appliance of the shell of equipment, especially high quality requirement.
To achieve these goals, the present invention provides a kind of anticorrosive coating composition, wherein, the anticorrosive coating composition
Contain bisphenol A type epoxy resin 30-50 parts by weight, polyester resin 1-10 parts by weight, titanium-iron powder 10-20 parts by weight, isocyanates
Class compound 0.5-5 parts by weight and polyester polyol 0.5-5 parts by weight.
Preferably, which contains bisphenol A type epoxy resin 40-45 parts by weight, polyester resin 2-5 weight
Part, titanium-iron powder 12-18 parts by weight, isocyanate ester compound 1-2 parts by weight and polyester polyol 1-2 parts by weight.
Preferably, the isocyanate ester compound is selected from aromatic diisocyanate compounds, aliphatic diisocyanate
One or more in ester compounds, alicyclic diisocyanate compound and heterocyclic diisocyanate compound.
Preferably, the isocyanate ester compound be selected from 4,4 '-methyl diphenylene diisocyanate, 4,4 '-diphenyl
Dimethylmethanediisocyanate, 1,3- phenylene diisocyanates, 1,4- phenylene diisocyanates, 2,4 toluene diisocyanate, 2,
In 6- toluene di-isocyanate(TDI)s, hexamethylene diisocyanate, hexamethylene -1,4- diisocyanate and xylene diisocyanate
One or more.
Preferably, which contains one kind in antifoaming agent, surfactant, coalescents and chain extender
It is or a variety of.
Preferably, the antifoaming agent is organosiloxane and the mixture of mineral oil.
Preferably, surfactant is ethoxy compound.
Preferably, coalescents are propandiol butyl ether and/or propylene glycol methyl ether acetate.
Preferably, the chain extender is selected from diethylaminoethanol, trihydroxy methyl propionic acid, glycerine, trimethylolpropane, two sweet
One or more in alcohol.
The present invention also provides above-mentioned anticorrosive coating composition household appliance technical field application.
Through the above technical solutions, the present invention is by using bisphenol A type epoxy resin and polyester resin phase in certain proportion
Anticorrosive coating composition obtained from cooperation has excellent adhesive force, wearability and stability, especially has in terms of antirust
Good effect.Meanwhile anticorrosive coating composition of the invention carries out small molecule chain extension with chain extender, introduces hydrophilic radical, it can
Improve stability, water resistance and the physical property of coating composition.
Specific embodiment
The endpoint of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For numberical range, between the endpoint value of each scope, respectively
It between the endpoint value of a scope and individual point value and can be individually combined with each other between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
Anticorrosive coating composition according to the present invention, wherein, which contains bisphenol A type epoxy resin
30-50 parts by weight, polyester resin 1-10 parts by weight, titanium-iron powder 10-20 parts by weight, isocyanate ester compound 0.5-5 parts by weight
And polyester polyol 0.5-5 parts by weight.
Preferably, which contains bisphenol A type epoxy resin 40-45 parts by weight, polyester resin 2-5 weight
Part, titanium-iron powder 12-18 parts by weight, isocyanate ester compound 1-2 parts by weight and polyester polyol 1-2 parts by weight.
In the present invention, there is no particular limitation for the isocyanate ester compound, can use commonly used in coating group
The various isocyanate ester compounds of object are closed, the isocyanate ester compound can be selected from aromatic diisocyanate chemical combination
One in object, aliphatic diisocyanate compound, alicyclic diisocyanate compound and heterocyclic diisocyanate compound
Kind is a variety of.It is preferably described different from the point of view of the rust-proof effect of coating composition and the cooperation with coating composition is improved
Cyanate compound be selected from 4,4 '-methyl diphenylene diisocyanate, 4,4 '-diphenyldimethyhnethane diisocyanate,
1,3- phenylene diisocyanates, 1,4- phenylene diisocyanates, 2,4 toluene diisocyanate, 2,6- toluene di-isocyanate(TDI)s, six Asias
One or more in methyl diisocyanate, hexamethylene -1,4- diisocyanate and xylene diisocyanate；More preferably
1,4- phenylene diisocyanates and 1,3- phenylene diisocyanates.
In order to improve the comprehensive performance of anticorrosive coating composition, which can also contain as needed disappears
One or more in infusion, surfactant, coalescents and chain extender.
In the present invention, there is no particular limitation for the antifoaming agent, can use commonly used in the various of coating composition
Antifoaming agent.From defoaming effect is improved with from the point of view of the physical property for stablizing coating composition, the antifoaming agent is preferably to have
The weight ratio of the mixture of organic siloxane and mineral oil, more preferable organosiloxane and mineral oil is 1：0.5-5, particularly preferred 1：
1-2。
In the present invention, there is no particular limitation for the surfactant, can use commonly used in coating composition
Various surfactants.Preferably, the surfactant is ethoxy compound, such as can enumerate fatty alcohol ethoxylate conjunction
Object is preferably bay alcohol ethoxylates.
In the present invention, there is no particular limitation for the coalescents, can use commonly used in each of coating composition
Kind coalescents.Preferably, the coalescents are propandiol butyl ether and/or propylene glycol methyl ether acetate.
In the present invention, there is no particular limitation for the chain extender, can use commonly used in the various of coating composition
Chain extender.The chain extender in diethylaminoethanol, trihydroxy methyl propionic acid, glycerine, trimethylolpropane, diethylene glycol (DEG) one
Kind is a variety of.
According to the present invention, the dosage of the antifoaming agent, surfactant, coalescents and chain extender does not limit particularly
It is fixed, as long as reaching the requirement for improving anticorrosive coating composition performance.It is combined compared with antirusting paint described in 100 parts by weight
Object, the antifoaming agent, surfactant, total weight of coalescents and chain extender are 0.1-20 parts by weight, are preferably 2-10
Parts by weight.
A kind of optional preparation method of anticorrosive coating composition as the present invention, can be first by bisphenol type epoxy tree
Fat and polyester resin uniformly mix；Then isocyanate ester compound and polyester polyol are added, next adds in the titanium
Iron powder, antifoaming agent, surfactant and chain extender simultaneously uniformly mix, and are eventually adding the optional coalescents and uniformly mix
It closes.The titanium-iron powder, antifoaming agent, the addition opportunity of surfactant and chain extender can suitably select, and can be prepared anti-
Become rusty coating composition.
In order to ensure that the chain extender can be acted on fully, after adding in the chain extender, preferably by mixed system in 70-
0.5-8h is reacted at 120 DEG C, preferably reacts 1-4h at 80-100 DEG C.
In the present invention, uniform mix may be employed the mode of stirring and carry out, may be employed commonly used in the art for
The various equipment for stirring coating composition are completed.It is preferably 200-500r/min as stir speed (S.S.), more preferably 300-400r/
min。
The present invention also provides above-mentioned anticorrosive coating composition household appliance technical field application, such as outside household electrical appliance
Application in shell protection.
The present invention will be described in detail by way of examples below.In following embodiment, bisphenol A type epoxy resin E51
With unsaturated polyester resin 196 purchased from Wuxi mayor's desiccation work Co., Ltd, polyester polyol 150 is purchased from Shandong China really high-tech glue
Stick Co., Ltd.
Embodiment 1
(1) 40 parts by weight of bisphenol A type epoxy resin and 5 parts by weight of polyester resin are mixed, with mixing speed 300r/min
Stirring 30 minutes；
(2) 1 parts by weight of Isosorbide-5-Nitrae-phenylene diisocyanate, 1 parts by weight of polyester polyol are added in the product of step (1), with
Mixing speed 300r/min is stirred 20 minutes；
(3) 15 parts by weight of titanium-iron powder, antifoaming agent (weight ratio 1 are added in the product of step (2)：1 organosiloxane
With the mixture of mineral oil) 1 parts by weight, surfactant (bay alcohol ethoxylates) 1 parts by weight, with mixing speed
300r/min is stirred 20 minutes
(4) 1 parts by weight of trihydroxy methyl propionic acid are added in the product of step (3), and 3h is reacted at 100 DEG C；
(5) 1 parts by weight of propandiol butyl ether are added in the product of step (4), 30 points are stirred with mixing speed 300r/min
Clock obtains anticorrosive coating composition A1.
Embodiment 2
Method according to embodiment 1 prepares anticorrosive coating composition, unlike, use 45 weight of bisphenol A type epoxy resin
Part, 5 parts by weight of polyester resin are measured, obtain anticorrosive coating composition A2.
Embodiment 3
Method according to embodiment 1 prepares anticorrosive coating composition, unlike, use 42 weight of bisphenol A type epoxy resin
Part, 3 parts by weight of polyester resin are measured, obtain anticorrosive coating composition A3.
Embodiment 4
Method according to embodiment 1 prepares anticorrosive coating composition, unlike, use 30 weight of bisphenol A type epoxy resin
Part, 10 parts by weight of polyester resin are measured, obtain anticorrosive coating composition A4.
Embodiment 5
Method according to embodiment 1 prepares anticorrosive coating composition, unlike, without using chain extender, obtain antirust painting
Feed composition A5.
Comparative example 1
Method according to embodiment 1 prepares anticorrosive coating composition, unlike, use 30 weight of bisphenol A type epoxy resin
Part, 15 parts by weight of polyester resin are measured, obtain anticorrosive coating composition DA1.
Test case
Above-mentioned anticorrosive coating composition is coated in 80 microns of dry coating thickness on galvanized sheet, after 3 days dry, root
Salt spray corrosion test is carried out according to ASTM B117, tests rustless property.
It by 300 test when small, as a result understands, anticorrosive coating composition A1-A3 is provided with good rustless property, prevents
Coating composition A4 and the A5 rust-preventing characteristic that becomes rusty are qualified, are slightly worse than anticorrosive coating composition A1-A3；Anticorrosive coating composition DA1's is anti-
Result of the test of becoming rusty is unqualified.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In the skill of the present invention
In art conception range, a variety of simple variants can be carried out to technical scheme, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, belongs to
Protection scope of the present invention.
Claims (10)
1. a kind of anticorrosive coating composition, which is characterized in that the anticorrosive coating composition contains bisphenol A type epoxy resin 30-50
Parts by weight, polyester resin 1-10 parts by weight, titanium-iron powder 10-20 parts by weight, isocyanate ester compound 0.5-5 parts by weight and poly-
Ester polyol 0.5-5 parts by weight.
2. anticorrosive coating composition according to claim 1, wherein, which contains bisphenol type epoxy
Resin 40-45 parts by weight, polyester resin 2-5 parts by weight, titanium-iron powder 12-18 parts by weight, isocyanate ester compound 1-2 parts by weight
And polyester polyol 1-2 parts by weight.
3. anticorrosive coating composition according to claim 1, wherein, the isocyanate ester compound is selected from aromatic series two
Isocyanate compound, aliphatic diisocyanate compound, alicyclic diisocyanate compound and heterocyclic diisocyanate
One or more in compound.
4. anticorrosive coating composition according to claim 3, wherein, the isocyanate ester compound is selected from 4,4 '-two
Methylenebis phenyl isocyanate, 4,4 '-diphenyldimethyhnethane diisocyanate, 1,3- phenylene diisocyanates, 1,4- benzene two
Isocyanates, 2,4 toluene diisocyanate, 2,6- toluene di-isocyanate(TDI)s, hexamethylene diisocyanate, hexamethylene -1,4-
One or more in diisocyanate and xylene diisocyanate.
5. according to the anticorrosive coating composition described in any one in claim 1-4, wherein, which contains
One or more in antifoaming agent, surfactant, coalescents and chain extender.
6. anticorrosive coating composition according to claim 5, wherein, the antifoaming agent is organosiloxane and mineral oil
Mixture.
7. anticorrosive coating composition according to claim 5, wherein, the surfactant is ethoxy compound.
8. anticorrosive coating composition according to claim 5, wherein, the coalescents are propandiol butyl ether and/or third
Glycol methyl ether acetate.
9. anticorrosive coating composition according to claim 5, wherein, the chain extender is selected from diethylaminoethanol, three hydroxyls
One or more in methylpropanoic acid, glycerine, trimethylolpropane, diethylene glycol (DEG).
10. according to anticorrosive coating composition described in any one in claim 1-9 in the application of household appliance technical field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711404964.2A CN108084844A (en) | 2017-12-22 | 2017-12-22 | Anticorrosive coating composition and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711404964.2A CN108084844A (en) | 2017-12-22 | 2017-12-22 | Anticorrosive coating composition and its preparation method and application |
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| Publication Number | Publication Date |
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| CN108084844A true CN108084844A (en) | 2018-05-29 |
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ID=62178634
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711404964.2A Pending CN108084844A (en) | 2017-12-22 | 2017-12-22 | Anticorrosive coating composition and its preparation method and application |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190939A (en) * | 2010-03-02 | 2011-09-21 | 曾建祥 | Anti-corrosion primer for iron and steel |
| CN103360936A (en) * | 2013-06-26 | 2013-10-23 | 南京市荣达树脂有限公司 | Preservative resin coating |
| CN104046221A (en) * | 2014-06-26 | 2014-09-17 | 无锡市崇安区科技创业服务中心 | Oil-resistant anti-rust paint and preparation method thereof |
| CN104817922A (en) * | 2015-04-23 | 2015-08-05 | 柳州凡一科技有限公司 | Rust-proof high-temperature resistant coating for agricultural machinery |
-
2017
- 2017-12-22 CN CN201711404964.2A patent/CN108084844A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190939A (en) * | 2010-03-02 | 2011-09-21 | 曾建祥 | Anti-corrosion primer for iron and steel |
| CN103360936A (en) * | 2013-06-26 | 2013-10-23 | 南京市荣达树脂有限公司 | Preservative resin coating |
| CN104046221A (en) * | 2014-06-26 | 2014-09-17 | 无锡市崇安区科技创业服务中心 | Oil-resistant anti-rust paint and preparation method thereof |
| CN104817922A (en) * | 2015-04-23 | 2015-08-05 | 柳州凡一科技有限公司 | Rust-proof high-temperature resistant coating for agricultural machinery |
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