CN109161279A - A kind of aqueous coating for silicon steel sheet surface - Google Patents
A kind of aqueous coating for silicon steel sheet surface Download PDFInfo
- Publication number
- CN109161279A CN109161279A CN201810825868.3A CN201810825868A CN109161279A CN 109161279 A CN109161279 A CN 109161279A CN 201810825868 A CN201810825868 A CN 201810825868A CN 109161279 A CN109161279 A CN 109161279A
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- CN
- China
- Prior art keywords
- mass fraction
- steel sheet
- silicon steel
- sheet surface
- aqueous coating
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- 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
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- 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
- C09D7/20—Diluents or solvents
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of aqueous coatings for silicon steel sheet surface, comprising: the curing agent of 0.5%-2% mass fraction；The water of 40%-55% mass fraction；The cosolvent of 8%-12% mass fraction；The acrylic resin of the modification of 32%-50% mass fraction, wherein modified acrylic resin includes-OH ,-NH2、‑COOH、‑COONH2At least one modified group, the modified group are located on main chain or branch.The same acrylic resin crossed preparation and there is modified hydrophilic group of the present invention, and facilitate the deliquescent amine salt of coating by increasing in the blending constituent of coating, obtained coating can reach the degree of infinite dilution, simultaneously can not only meet electric machine stator iron outer layer coating to intensity and and dielectric properties requirement, and the volatile quantity of volatile organic compounds can be reduced, improve the feature of environmental protection.
Description
Technical field
The invention belongs to water paint fields, and in particular to a kind of aqueous coating for silicon steel sheet surface.
Background technique
Stator core insulation is a part for having very important status in high-voltage motor.The service life of high-voltage motor
It is largely determined by the type and performance that are coated in the lamination coating on surface with operational reliability.
With the raising of electricity consumption increased year by year with environmental protection requirement, on the one hand, since the capacity of high-voltage motor exists
Gradual increase, voltage rating are also lengthened accordingly in continuous improvement, core length, in this way, allowing for lamination coating will have
Higher intensity and dielectric properties；On the other hand, due to traditional volatile organic compounds (VOC) for having solvent lamination coating
Content is higher, has biggish harm to natural environment and human health, so researching and developing and applying high-voltage motor lamination coating
Become the hot spot of motor insulation industry concern, the lamination coating of low VOC environmental protection can guarantee worker while protecting environment again
Health, so to the research of this lamination coating at industry emphasis.
The resin of synthesis is to take water as a solvent by water paint, and water opposite segments organic solvent boiling point wants high, and poison is tasteless
, environment and human health will not be damaged.Therefore opening can be dissolved in the water paint of water, reduce VOC, have wide
General application prospect.Therefore it is an object of the invention to make a kind of aqueous coating for silicon steel sheet surface.
Summary of the invention
In view of the above-mentioned problems, the present invention proposes a kind of aqueous coating for silicon steel sheet surface.
It realizes above-mentioned technical purpose, reaches above-mentioned technical effect, the invention is realized by the following technical scheme:
A kind of aqueous coating for silicon steel sheet surface, comprising: the curing agent of 0.5%-2% mass fraction；40%-55%
The water of mass fraction；The cosolvent of 8%-12% mass fraction；The acrylic resin of the modification of 32%-50% mass fraction,
In, modified acrylic resin includes-OH ,-NH2、-COOH、-COONH2At least one modified group, the modified group position
In on main chain or branch.
As a further improvement of the present invention, the aqueous coating wireless can be diluted in water.
As a further improvement of the present invention, the raw material monomer for preparing acrylic resin includes acrylic acid, is also included at least
Any one of hydroxyethyl methacrylate, hydroxy-ethyl acrylate, hydroxypropyl acrylate.
As a further improvement of the present invention, the cosolvent is NaFeEDTA amine salt.
As a further improvement of the present invention, further include acid-base neutralization agent, the pH value control of the aqueous coating is existed
Between 6.5-7.5.
As a further improvement of the present invention, the acid-base neutralization agent is KOH solution.
Beneficial effects of the present invention: the present invention with cross preparation have modified hydrophilic group acrylic resin, and by
Increasing in the blending constituent of coating facilitates the deliquescent amine salt of coating, and obtained coating can reach the journey of infinite dilution
Degree, at the same can not only meet electric machine stator iron outer layer coating to intensity and and dielectric properties requirement, and can reduce
The volatile quantity of volatile organic compounds improves the feature of environmental protection.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The aqueous coating on silicon steel sheet surface is used for made by the present invention, comprising: the solidification of 0.5%-2% mass fraction
Agent；The water of 40%-55% mass fraction；The cosolvent of 8%-12% mass fraction；The third of the modification of 32%-50% mass fraction
Olefin(e) acid resin.
Wherein, the acrylic resin of the modification includes-OH ,-NH2、-COOH、-COONH2At least one modified hydrophilic
Group, the modified group are located on main chain or branch.The aqueous coating wireless can be diluted in water, be had
Faint yellow or blush transparency liquid.
In order to obtain modified acrylic resin, the raw material monomer of acrylic resin is prepared in addition to including building resin backbone
Acrylic acid, further include provide modified group acrylic acid derivative monomer, the acrylic acid derivative includes methyl-prop
Any one of olefin(e) acid hydroxyl ethyl ester, hydroxy-ethyl acrylate, hydroxypropyl acrylate.
During preparing acrylic resin, first one third acrylic acid is added in the organic solvent containing initiator
React insulation reaction 1h, organic solvent used includes that ethyl alcohol, n-butanol, glycerine, butyl are any, preferably
For the aqueous solution of n-butanol.The monomers dropwise of remaining acrylic acid and its derivative is added in organic solvent later, at least
It needs 3h to complete reaction, obtains the primary raw material acrylic resin of institute's coating.In the reaction, organic solvent used accounts for total matter
50% or so of amount.
The cosolvent is a kind of surfactant, not only facilitates and improve coating using NaFeEDTA amine salt
Dissolubility, and after moisture evaporation, anti-rust action can be played in the protective film that the metal surface of stator core forms layer of transparent.
Since the pH value that made coating needs needs to control in a certain range, water of the invention is being configured
Property coating in need to add in hydrotropism's coating further include acid-base neutralization agent, the pH value of the aqueous coating is controlled in 6.5-
Between 7.5.Due to the presence of modified group, usual water paint is slant acidity, therefore described in a kind of embodiment of the invention
Acid-base neutralization agent be KOH solution.
In order to differentiate configured silicon steel sheet surface water soluble acrylic resin's coating effect, the present invention is according to the world
Standard testing resinous coat is in index parameters such as the adhesive force on silicon steel sheet surface, flexibility and hardness.Specific result such as table
Shown in one:
| Serial number | Viscosity (23 DEG C)/s | It is water-soluble | Hardness (H) | Adhesive force grade | Tough grade | Water resistance |
| 1 | 136 | ∞ | 8 | 1 | 1 | OK |
| 2 | 168 | ∞ | 7 | 1 | 1 | OK |
| 3 | 250 | ∞ | 9 | 1 | 1-2 | OK |
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of aqueous coating for silicon steel sheet surface, comprising:
The curing agent of 0.5%-2% mass fraction；
The water of 40%-55% mass fraction；
The cosolvent of 8%-12% mass fraction；
The acrylic resin of the modification of 32%-50% mass fraction, wherein modified acrylic resin includes-OH ,-NH2、-
COOH、-COONH2At least one modified group, the modified group are located on main chain or branch.
2. a kind of aqueous coating for silicon steel sheet surface according to claim 1, it is characterised in that: the aqueous painting
Layer wireless can be diluted in water.
3. a kind of aqueous coating for silicon steel sheet surface according to claim 1, it is characterised in that: prepare acrylic acid tree
The raw material monomer of rouge includes acrylic acid, also including at least in hydroxyethyl methacrylate, hydroxy-ethyl acrylate, hydroxypropyl acrylate
It is any.
4. a kind of aqueous coating for silicon steel sheet surface according to claim 1, it is characterised in that: the cosolvent
For NaFeEDTA amine salt.
5. a kind of aqueous coating for silicon steel sheet surface according to claim 1, it is characterised in that: further include in soda acid
And agent, the pH value of the aqueous coating is controlled between 6.5-7.5.
6. a kind of aqueous coating for silicon steel sheet surface according to claim 6, it is characterised in that: in the soda acid
It is KOH solution with agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825868.3A CN109161279A (en) | 2018-07-25 | 2018-07-25 | A kind of aqueous coating for silicon steel sheet surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810825868.3A CN109161279A (en) | 2018-07-25 | 2018-07-25 | A kind of aqueous coating for silicon steel sheet surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109161279A true CN109161279A (en) | 2019-01-08 |
Family
ID=64898102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810825868.3A Pending CN109161279A (en) | 2018-07-25 | 2018-07-25 | A kind of aqueous coating for silicon steel sheet surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109161279A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821323A (en) * | 2006-03-14 | 2006-08-23 | 无锡市奥尔化工有限公司 | Water dispersion chromium-free single component silicon steel insulation paint and its preparing method |
| CN101486866A (en) * | 2009-02-20 | 2009-07-22 | 南京大学 | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution |
| CN104761684A (en) * | 2013-10-21 | 2015-07-08 | 北京金汇利应用化工制品有限公司 | Waterborne acrylic modified saturated polyester resin |
-
2018
- 2018-07-25 CN CN201810825868.3A patent/CN109161279A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821323A (en) * | 2006-03-14 | 2006-08-23 | 无锡市奥尔化工有限公司 | Water dispersion chromium-free single component silicon steel insulation paint and its preparing method |
| CN101486866A (en) * | 2009-02-20 | 2009-07-22 | 南京大学 | High temperature resistant annealing treated single-component chromium-free water-based silicon steel sheet insulating coating solution |
| CN104761684A (en) * | 2013-10-21 | 2015-07-08 | 北京金汇利应用化工制品有限公司 | Waterborne acrylic modified saturated polyester resin |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190108 |
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| RJ01 | Rejection of invention patent application after publication |