CN105860623A - Water-based paint for metal and preparation method of water-based paint - Google Patents
Water-based paint for metal and preparation method of water-based paint Download PDFInfo
- Publication number
- CN105860623A CN105860623A CN201610287195.1A CN201610287195A CN105860623A CN 105860623 A CN105860623 A CN 105860623A CN 201610287195 A CN201610287195 A CN 201610287195A CN 105860623 A CN105860623 A CN 105860623A
- Authority
- CN
- China
- Prior art keywords
- modified polyurethane
- water
- water paint
- metal
- add
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
-
- 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
-
- 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
-
- 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
- C09D7/63—Additives non-macromolecular organic
Abstract
The invention provides water-based paint for metal and a preparation method of the water-based paint. The water-based paint is mainly prepared from, by weight, 10%-16% of methacrylic acid, 15%-25% of acrylic acid, 0.1%-3% of triethanolamine, 2%-10% of nano calcium carbonate, 2%-8% of modified polyurethane, 0.5%-1% of silicone oil, 0.1%-4% of isothiazolinone, 3%-10% of propylene glycol methyl ether acetate and 35%-45% of water, wherein the modified polyurethane is obtained by polymerizing 4,4'-diphenylmethane diisocyanate and polyethylene glycol according to the mole ratio of (1-2):1. The obtained water-based paint for the metal is poisonless, free of pollution, green, environmentally friendly, high in corrosion resistance, few in metal spot and good in comprehensive property, has the zero-level adhesive force to be not prone to fall and the good covering power and is simple in production technology, wide in application range, low in cost and beneficial for industrialized production.
Description
Technical field
The invention belongs to paint field, be specifically related to a kind of metal water paint and this coating
Preparation method.
Background technology
Water paint is a kind of coating with water as diluent, without organic solvent, have nontoxic,
Non-stimulated abnormal smells from the patient, the harmless feature such as free from environmental pollution, receive the general of people in recent years
All over paying close attention to, can be used in metal, plastics, glass and various material.
There is poor, the poor adhesive force of antiseptic property etc. in the most domestic water paint for metal material
Defect, causes metal surface to there will be substantial amounts of metal mottling and Emulsified spot, produces above lacking
Fall into be primarily due to its using water as solvent or disperse medium, due to water characteristic with have
Machine solvent is very different, as big in surface tension, and vapourizing temperature is high, difficult moistening, less soluble etc.,
Therefore there is poor adhesive force in it, the most volatile during spray painting, affected by humidity greatly, be difficult to
Control, the problem such as corrosion-resistant.So, industrial water paint is the most often
It is restricted.Prior art is suppressed as viscosifier by interpolation SiO 2 powder
The method of paint metal speckle, but the levelability that the method instead results in coating declines.In the face of work
The condition of industry application is harsher, also has the highest standard for coating self performance, tool
The water paint having the excellent properties such as high temperature resistant, corrosion-resistant, adhesive force becomes current people and pays close attention to
Focus, but the most domestic water paint for metal material can't fully meet with
Upper standard.
Summary of the invention
The present invention solves in prior art, metal water paint poor adhesive force, corrosion resistance
The problem such as bad, it is provided that a kind of metal water paint, this coating has the corrosion-resistant of excellence
Property and adhesive force, do not contain benzene, aldehyde material in excellent in cushion effect and water paint composition,
Asepsis environment-protecting.
In order to achieve the above object, the present invention is achieved in that a kind of metal water paint,
Its primary raw material is methacrylic acid 10～16wt%, acrylic acid 15～25wt%, triethanolamine
0.1～3wt%, nano-calcium carbonate 2～10wt%, modified polyurethane 2～8wt%, silicone oil
0.5～1wt%, isothiazolone 0.1～4wt%, propylene glycol methyl ether acetate 3～10wt% and water
35～45wt%；
Described modified polyurethane is pressed with Polyethylene Glycol by 4-4 '-methyl diphenylene diisocyanate
According to mol ratio (1～2): 1 polymerisation in bulk obtains.
Further, its primary raw material be methacrylic acid 13wt%, acrylic acid 20wt%, three
Ethanolamine 2.5wt%, nano-calcium carbonate 6wt%, modified polyurethane 6wt%, silicone oil 0.75wt%,
Isothiazolone 3wt%, propylene glycol methyl ether acetate 6wt% and water 40wt%.
Further, described modified polyurethane is by 4-4 '-methyl diphenylene diisocyanate
Obtain according to the polymerisation in bulk of mol ratio 1:1 with Polyethylene Glycol.
The preparation method of modified polyurethane of the present invention is as follows: by Polyethylene Glycol and poly-second two
Alcohol monododecyl ether mix and blend, is warming up to 100 DEG C of evacuation, continuous dehydration 4 hours,
It is cooled to 70～75 DEG C and adds 4-4 '-methyl diphenylene diisocyanate, high-speed stirred
15～20min, add catalyst, stir while adding and be brought rapidly up to 120 DEG C, changed
Property polyurethane.
Further, described catalyst is arbitrary in stannous octoate and dibutyl tin laurate
Kind.
Further, described polyethylene glycol relative molecular weight is 10000.
The present invention is also claimed the preparation method of above-mentioned metal water paint, including following step
Rapid: to weigh each raw material in proportion, by methacrylic acid, acrylic acid, nano-calcium carbonate isothiazole
Quinoline ketone is added to the water；After being stirred at room temperature uniformly, add triethanolamine regulation pH value of solution=7～7.5；
Add modified polyurethane, stirring while adding, it is eventually adding propylene glycol methyl ether acetate and silicone oil
React and i.e. obtain metal water paint in 3～5 hours.
Modified polyurethane can improve the thixotropy of water paint as thickening agent, reduce drip and
Sagging, the relative molecular mass of Polyethylene Glycol is 10000, and its main chain is more hydrophilic, Polyethylene Glycol
Producing macromolecular chain with 4-4 '-methyl diphenylene diisocyanate generation polymerisation in bulk, this divides greatly
Hydrophilic segment in subchain is the longest, and the hydrone of absorption is the most, and then strengthens the viscosity of coating.
Each component hydrophobic structure is attached together thickening agent with coating, forms solid netted knot in water
Structure, makes coating have good thixotropy, is conducive to processing.Owing to film former is water paint
The main source of middle volatile material, so for avoid the pollution to environment, will select nontoxic nothing
The raw material of evil, present invention propylene glycol methyl ether acetate is as film former.For preventing coating long-term
It is in easy mouldization of coating under moisture, the problem such as rotten, adds isothiazolone, add appropriate
Silicone oil can reach preferably defoaming effect.
Compared with prior art, present invention have the advantage that gained metal aqueous of the present invention
Coating nontoxic pollution-free, environmental protection；Adhesive force 0 grade, difficult drop-off, corrosion resistance is strong,
Metal mottling is few, has good covering power, good combination property；Production technology of the present invention is simple,
The wide model of range, low cost, beneficially industrialized production.
Detailed description of the invention
Below by specific embodiment, the present invention will be described, but the invention is not limited in
This.Experimental technique described in following embodiment, if no special instructions, is conventional method；Institute
State reagent and material, if no special instructions, the most commercially obtain.Modified polyurethane is adopted
Prepare by the method for polymerisation in bulk commonly used in the art.Preferred molecular weight in following embodiment
The Polyethylene Glycol of 10000, Polyethylene Glycol with the mol ratio of Polyethylene Glycol monododecyl ether is
(2.5～3): 2, preferred molar ratio is 2.5:2.
Embodiment 1
PEG20000 2.5mol and 2mol Polyethylene Glycol monododecyl ether is mixed and stirs
Mix, be warming up to 100 DEG C of evacuation, continuous dehydration 4 hours, be cooled to 75 DEG C and add 2.5mol
4-4 '-methyl diphenylene diisocyanate, high-speed stirred 15min, add 0.5g octanoic acid sub-
Stannum, stirs while adding and is brought rapidly up to 120 DEG C, obtain modified polyurethane.
By methacrylic acid 12wt%, acrylic acid 17wt%, nano-calcium carbonate 7wt% and different thiophene
Oxazoline ketone 3wt% adds in 45wt% water；After being stirred at room temperature uniformly, add 1wt% tri-ethanol
Amine regulation pH value of solution=7；Add 4wt% modified polyurethane, stirring while adding, it is eventually adding
6wt% propylene glycol methyl ether acetate and the reaction of 0.7wt% silicone oil i.e. obtain metal aqueous in 3～5 hours
Coating.
Embodiment 2
PEG20000 3mol and 2mol Polyethylene Glycol monododecyl ether is mixed and stirs
Mix, be warming up to 100 DEG C of evacuation, continuous dehydration 4 hours, be cooled to 75 DEG C and add 4.5mol
4-4 '-methyl diphenylene diisocyanate, high-speed stirred 20min, add 0.6g bis-Laurel
Acid dibutyl tin, stirs while adding and is brought rapidly up to 120 DEG C, obtain modified polyurethane.
By methacrylic acid 10.6wt%, acrylic acid 15.3wt%, nano-calcium carbonate 2.6wt% and
Isothiazolone 0.1wt% adds in 35wt% water；After being stirred at room temperature uniformly, add 0.1wt%
Triethanolamine regulation pH value of solution=7.5；Add 2.5wt% modified polyurethane, stirring while adding,
It is eventually adding 3.1wt% propylene glycol methyl ether acetate and 0.5wt% silicone oil reacts 3～5 hours and get final product
Metal water paint.
Embodiment 3
PEG20000 3mol and 2mol Polyethylene Glycol monododecyl ether is mixed and stirs
Mix, be warming up to 100 DEG C of evacuation, continuous dehydration 4 hours, be cooled to 75 DEG C and add 6mol 4-4 '
-methyl diphenylene diisocyanate, high-speed stirred 15min, add 0.5g stannous octoate,
Stir while adding and be brought rapidly up to 120 DEG C, obtain modified polyurethane.
By methacrylic acid 15.5wt%, acrylic acid 25wt%, nano-calcium carbonate 10wt% and different
Thiazolinone 4wt% adds in 45wt% water；After being stirred at room temperature uniformly, add 3wt% tri-second
Hydramine regulation pH value of solution=7；Add 8wt% modified polyurethane, stirring while adding, finally add
Enter 8wt% propylene glycol methyl ether acetate and the reaction of 1wt% silicone oil i.e. obtains metal water in 3～5 hours
Property coating.
Embodiment 4
PEG20000 2.5mol and 2mol Polyethylene Glycol monododecyl ether is mixed and stirs
Mix, be warming up to 100 DEG C of evacuation, continuous dehydration 4 hours, be cooled to 75 DEG C and add 2.5mol
4-4 '-methyl diphenylene diisocyanate, high-speed stirred 15min, add 0.5g octanoic acid sub-
Stannum, stirs while adding and is brought rapidly up to 120 DEG C, obtain modified polyurethane.
By methacrylic acid 13wt%, acrylic acid 20wt%, nano-calcium carbonate 6wt% and different thiophene
Oxazoline ketone 3wt% adds in 40wt% water；After being stirred at room temperature uniformly, add 2.5wt% tri-ethanol
Amine regulation pH value of solution=7.5；Add 6wt% modified polyurethane, stirring while adding, finally add
Enter 6wt% propylene glycol methyl ether acetate and the reaction of 0.75wt% silicone oil i.e. obtains metal for 3～5 hours and uses
Water paint.
By on embodiment 1～4 gained water paint pre-coated metal test block surface, at room temperature dry in the air
Shine 2-4 hour and can become dry film, film is carried out main performance test, wherein adhesive force according to
The required standard of GB/T9286-1998 detects, and resistance to impact is according to GB/T1732-1993
Required standard detect.Above-mentioned dry film is carried out acid and alkali resistance test, is respectively placed in
In the sulphuric acid of 0.1mol/L and sodium hydroxide, at 15～25 DEG C, keep the time of regulation, take
Going out sample to clean, dry up, whether visual inspection phosphatization surface there is corrosion.Specific experiment data
Please refer to table 1.
Table 1 embodiment 1～4 water paint the performance test results
By test result indicate that above, metal water paint prepared by the present invention has good
Adhesive force and shock resistance, metal mottling is few, it is possible to meet industrial circle acidproof for coating
Property and the requirement of alkali resistance, and paint ingredient green environmentally safe.
The above, the only present invention preferably detailed description of the invention, but the protection model of the present invention
Enclosing and be not limited thereto, any those familiar with the art is in the skill of present disclosure
In the range of art, according to technical scheme and inventive concept equivalent in addition thereof or change
Become, all should contain within protection scope of the present invention.
Claims (7)
1. a metal water paint, it is characterised in that its primary raw material is metering system
Acid 10～16wt%, acrylic acid 15～25wt%, triethanolamine 0.1～3wt%, nano-calcium carbonate
2～10wt%, modified polyurethane 2～8wt%, silicone oil 0.5～1wt%, isothiazolone
0.1～4wt%, propylene glycol methyl ether acetate 3～10wt% and water 35～45wt%；
Described modified polyurethane is pressed with Polyethylene Glycol by 4-4 '-methyl diphenylene diisocyanate
According to mol ratio (1～2): 1 polymerisation in bulk obtains.
A kind of metal water paint the most according to claim 1, it is characterised in that
Its primary raw material is methacrylic acid 13wt%, acrylic acid 20wt%, triethanolamine 2.5wt%,
Nano-calcium carbonate 6wt%, modified polyurethane 6wt%, silicone oil 0.75wt%, isothiazolone
3wt%, propylene glycol methyl ether acetate 6wt% and water 40wt%.
A kind of metal water paint the most according to claim 1, it is characterised in that
Described modified polyurethane by 4-4 '-methyl diphenylene diisocyanate with Polyethylene Glycol according to rubbing
You obtain than 1:1 polymerisation in bulk.
A kind of metal water paint the most according to claim 1, it is characterised in that
The preparation method of described modified polyurethane is as follows: by Polyethylene Glycol and polyethyleneglycol dodecane
Base ether mix and blend, is warming up to 100 DEG C of evacuation, continuous dehydration 4 hours, is cooled to 70～75 DEG C
Add 4-4 '-methyl diphenylene diisocyanate, high-speed stirred 15～20min, add and urge
Agent, stirs while adding and is brought rapidly up to 120 DEG C, obtain modified polyurethane.
A kind of metal water paint the most according to claim 4, it is characterised in that
Described catalyst is any one in stannous octoate and dibutyl tin laurate.
A kind of metal water paint the most according to claim 1, it is characterised in that
Described polyethylene glycol relative molecular weight is 10000.
7. the preparation side of any one metal water paint as claimed in claim 1
Method, it is characterised in that comprise the following steps: weigh each raw material in proportion, by methacrylic acid,
Acrylic acid, nano-calcium carbonate isothiazolone are added to the water；After being stirred at room temperature uniformly, add three
Ethanolamine regulation pH value of solution=7～7.5；Add modified polyurethane, stirring while adding, finally
Add propylene glycol methyl ether acetate and silicone oil reaction i.e. obtains metal water paint in 3～5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287195.1A CN105860623A (en) | 2016-04-29 | 2016-04-29 | Water-based paint for metal and preparation method of water-based paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287195.1A CN105860623A (en) | 2016-04-29 | 2016-04-29 | Water-based paint for metal and preparation method of water-based paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105860623A true CN105860623A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610287195.1A Pending CN105860623A (en) | 2016-04-29 | 2016-04-29 | Water-based paint for metal and preparation method of water-based paint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116102964A (en) * | 2022-12-08 | 2023-05-12 | 上海立邦长润发涂料有限公司 | PU color-modifying paint for UV and preparation method thereof |
Citations (4)
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| CN1840587A (en) * | 2005-03-28 | 2006-10-04 | 深圳市海川实业股份有限公司 | Method for preparing aqueous polyurethane thickener |
| CN101104765A (en) * | 2007-08-20 | 2008-01-16 | 维新环保涂料（深圳）有限公司 | Water-based acrylic acid top-coat |
| JP4432907B2 (en) * | 2003-12-25 | 2010-03-17 | エスケー化研株式会社 | Water-based paint composition |
| CN105153855A (en) * | 2015-09-17 | 2015-12-16 | 河北晨阳工贸集团有限公司 | Moistureproof mildewproof water-based paint and preparation method thereof |
-
2016
- 2016-04-29 CN CN201610287195.1A patent/CN105860623A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4432907B2 (en) * | 2003-12-25 | 2010-03-17 | エスケー化研株式会社 | Water-based paint composition |
| CN1840587A (en) * | 2005-03-28 | 2006-10-04 | 深圳市海川实业股份有限公司 | Method for preparing aqueous polyurethane thickener |
| CN101104765A (en) * | 2007-08-20 | 2008-01-16 | 维新环保涂料（深圳）有限公司 | Water-based acrylic acid top-coat |
| CN105153855A (en) * | 2015-09-17 | 2015-12-16 | 河北晨阳工贸集团有限公司 | Moistureproof mildewproof water-based paint and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116102964A (en) * | 2022-12-08 | 2023-05-12 | 上海立邦长润发涂料有限公司 | PU color-modifying paint for UV and preparation method thereof |
| CN116102964B (en) * | 2022-12-08 | 2024-02-20 | 河南立邦长润发科技材料有限公司 | PU color-modifying paint for UV and preparation method thereof |
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Application publication date: 20160817 |
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