CN109233574A - A kind of cathode electrophoresis dope and preparation method thereof - Google Patents
A kind of cathode electrophoresis dope and preparation method thereof Download PDFInfo
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- CN109233574A CN109233574A CN201810832719.XA CN201810832719A CN109233574A CN 109233574 A CN109233574 A CN 109233574A CN 201810832719 A CN201810832719 A CN 201810832719A CN 109233574 A CN109233574 A CN 109233574A
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- parts
- cathode electrophoresis
- electrophoresis dope
- modified epoxy
- lotion
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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
-
- 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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/443—Polyepoxides
- C09D5/4434—Polyepoxides characterised by the nature of the epoxy binder
- C09D5/4438—Binder based on epoxy/amine adducts, i.e. reaction products of polyepoxides with compounds containing amino groups only
-
- 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
- C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
- C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
- C09D5/443—Polyepoxides
- C09D5/4457—Polyepoxides containing special additives, e.g. pigments, polymeric particles
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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)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to technical field of coatings, specifically disclose a kind of cathode electrophoresis dope and preparation method thereof.The cathode electrophoresis dope, the raw material components including following mass fraction: 10-20 parts of mill base, 30-50 parts of lotion, 40-60 parts of pure water；The mill base includes following components according to the mass fraction: 10-20 parts of modified epoxy, environmentally friendly cosolvent 5-15 parts, 1-6 parts of neutralizer, 0.1-0.5 parts of surfactant, 25-40 parts of deionized water, 10-30 parts of kaolin, 3-23 parts of pigment；The lotion includes following components according to the mass fraction: 30-40 parts of modified epoxy, 2-8 parts of emulsifier, 1-8 parts of neutralizer, 30-50 parts of deionized water.The Corrosion Protections such as cathode electrophoresis dope covering power provided by the invention is high, oil preventing performance is high, hardness is high, the strong, acid-fast alkali-proof of adhesive force are excellent, and the paint film formed is uniform, and film thickness is lower.
Description
Technical field
The present invention relates to technical field of coatings more particularly to a kind of cathode electrophoresis dope and preparation method thereof.
Background technique
Since cathode electrophoresis dope comes out, no matter in terms of coating itself or coating application technology, all achieve many
Progress, is proposed many products and new application technology, and so far, almost 100% application ability cathode electrophoresis applies primer for automobiles
Material.
Electrophoretic coating is the water paint that developed earliest, it be mainly characterized by coating efficiency high, economic, safety,
Pollute it is small, convenient for automation size produce.After decades of development, product constantly updates, newest ability cathode electrophoresis
Coating requires the characteristics such as higher throwing power, lower pigment (P/B), better edge coverage effect.
Summary of the invention
Poor for existing electrophoretic coating throwing power, the problems such as covering power is low, and film thickness is high, the present invention provides a kind of cathode
Electrophoretic coating and preparation method thereof.
To achieve the above object of the invention, the embodiment of the present invention uses the following technical solution:
A kind of cathode electrophoresis dope, the raw material components including following mass fraction:
10-20 parts of mill base, 30-50 parts of lotion, 40-60 parts of pure water；
The mill base includes following components according to the mass fraction: 10-20 parts of modified epoxy, environmentally friendly cosolvent 5-15
Part, 1-6 parts of neutralizer, 0.1-0.5 parts of surfactant, 25-40 parts of deionized water, 10-30 parts of kaolin, 3-23 parts of pigment；
The lotion includes following components according to the mass fraction: 30-40 parts of modified epoxy, 2-8 parts of emulsifier, being neutralized
1-8 parts of agent, 30-50 parts of deionized water.
Compared with the existing technology, cathode electrophoresis dope provided by the invention, using modified epoxy as lotion and color
The main material of slurry, the usage amount of each components such as adjustment pigment, surfactant, emulsifier, adjusts the pigment of mill base, so that
Electrophoretic coating not only has a stronger throwing power, but also modified epoxy is as main film forming substance and pigment mating reaction,
Keep the Corrosion Protections such as the covering power of electrophoretic coating is high, oil preventing performance is high, hardness is high, the strong, acid-fast alkali-proof of adhesive force excellent, and shape
At paint film it is uniform, film thickness is lower.
Further, the present invention also provides the preparation methods of the cathode electrophoresis dope.The preparation method, including following step
It is rapid:
(1) each component is weighed according to the raw material proportioning of the cathode electrophoresis dope；
(2) by the modified epoxy, environmentally friendly solvent, neutralizer, surfactant, deionized water, kaolin, pigment
Mixing treatment, milled processed are carried out, mill base is obtained；
(3) modified epoxy, emulsifier, neutralizer, deionized water are subjected to mixing treatment, obtain lotion；
(4) mill base, lotion, pure water are subjected to mixing treatment, obtain cathode electrophoresis dope.
Compared with the existing technology, the preparation method of cathode electrophoresis dope provided by the invention grinds each component progress mixing
Electrophoretic coating is obtained after mill processing, simple process is easy to operate, and it is environmentally protective, securely and reliably.
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 embodiment of the present invention provides a kind of cathode electrophoresis dope.The cathode electrophoresis dope, the original including following mass fraction
Expect component:
10-20 parts of mill base, 30-50 parts of lotion, 40-60 parts of pure water；
The mill base includes following components according to the mass fraction: 10-20 parts of modified epoxy, environmentally friendly cosolvent 5-15
Part, 1-6 parts of neutralizer, 0.1-0.5 parts of surfactant, 25-40 parts of deionized water, 10-30 parts of kaolin, 3-23 parts of pigment；
The lotion includes following components according to the mass fraction: 30-40 parts of modified epoxy, 2-8 parts of emulsifier, being neutralized
1-8 parts of agent, 30-50 parts of deionized water.
Preferably, the modified epoxy in the mill base is organic silicon modified aqueous epoxy resin；In the lotion
Modified epoxy is aqueous acrylic modified epoxy resin, the Si-O- contained in organic silicon modified aqueous epoxy resin structural
Si key and Si-O-C key make the stemness, solvent resistance and high and low temperature resistance of modified resin obtain significant raising, while can
To improve the glossiness, covering power, mechanical property of coating；Aqueous acrylic modified epoxy resin keeps paint film water-fast, acidproof, resistance to
Alkali, impact resistance are good, and paint film film thickness is lower, and adhesive force is high, and hardness is high.
Preferably, the environmentally friendly cosolvent be in isopropanol, sec-butyl alcohol, propylene glycol monomethyl ether or butyl at least
One kind increasing the solubility of resin in water, while adjusting the viscosity of resin solution, improves the stability of coating, improves coating
The appearance of levelability and paint film.
Preferably, the neutralizer is at least one of lactic acid or acetic acid, and the pH environment of adjusting coating system makes mill base
Or lotion is more stable.
Preferably, the surfactant is that propylene oxide is condensed species nonionic surfactant or polyoxyethylene nonyl phenyl second
Alkene ether nonionic surfactant makes being uniformly dispersed for pigment, then cooperates milled processed that pigment is made to have more stable dispersion
Property, so that pigment and resin complex is improved the throwing power of coating.
Preferably, the emulsifier is induced by alkyl hydroxybenzene polyoxyethylene ether, improves the various surfaces constituted between phase in lotion
Tension forms uniform and stable lotion, anti-settling.
Preferably, the pigment includes one of carbon black, phthalocyanine blue, titanium dioxide, for deploying different types of mill base,
Pigment is reduced with resin complex, improves the throwing power of coating.
Cathode electrophoresis dope provided in an embodiment of the present invention, the main material using modified epoxy as lotion and mill base
Material, the usage amount of each components such as adjustment pigment, surfactant, emulsifier, adjusts the pigment of mill base, so that electrophoretic coating is not
Only there is stronger throwing power, and modified epoxy makes electrophoretic coating as main film forming substance and pigment mating reaction
The Corrosion Protections such as covering power high, oil preventing performance is high, hardness is high, the strong, acid-fast alkali-proof of adhesive force it is excellent, and the paint film formed is equal
Even, film thickness is lower.
The present invention still further provides the preparation of the cathode electrophoresis dope under the premise of providing the cathode electrophoresis dope
Method.
In one embodiment, the preparation method the following steps are included:
(1) each component is weighed according to the raw material proportioning of the cathode electrophoresis dope；
(2) by the modified epoxy, environmentally friendly solvent, neutralizer, surfactant, deionized water, kaolin, pigment
Mixing treatment, milled processed are carried out, mill base is obtained；
(3) modified epoxy, emulsifier, neutralizer, deionized water are subjected to mixing treatment, obtain lotion；
(4) mill base, lotion, pure water are subjected to mixing treatment, obtain cathode electrophoresis dope.
Explanation is further explained to above-mentioned preparation method below:
Preferably, the mixing speed of the mixing treatment is 1000-1500rpm, is sufficiently stirred, it is uniformly negative to obtain system
Pole electrophoretic coating；In step (1), the fineness of grind of the milled processed is≤15 μm, guarantees the homogeneity of mill base.
This method preparation process is simple, easy to operate, environmentally protective, securely and reliably.
The cathode electrophoresis dope and preparation method thereof that embodiment provides in order to better illustrate the present invention, below by implementation
Example is further to be illustrated.
Embodiment 1
A kind of cathode electrophoresis dope, the raw material components including following mass fraction:
20 parts of mill base, 30 parts of lotion, 50 parts of pure water；
The mill base includes following components according to the mass fraction: 10 parts of organic silicon modified aqueous epoxy resin, isopropanol 6
Part, 2 parts of lactic acid, 0.2 part of propylene oxide condensation product, 40 parts of deionized water, 20 parts of kaolin, 6 parts of carbon black；
The lotion includes following components according to the mass fraction: 40 parts of aqueous acrylic modified epoxy resin, OP-15 emulsification
6 parts of agent, 3 parts of lactic acid, 50 parts of deionized water.
The preparation method of above-mentioned cathode electrophoresis dope includes the following steps:
(1) each component is weighed according to the raw material proportioning of the cathode electrophoresis dope；
(2) by the organic silicon modified aqueous epoxy resin, isopropanol, lactic acid, propylene oxide condensation product, deionized water,
Kaolin and carbon black carry out mixing treatment 20min, milled processed to fineness≤15um, obtain mill base；
(3) the aqueous acrylic modified epoxy resin, OP-15 emulsifier, lactic acid, deionized water are subjected to mixing treatment
40min obtains lotion；
(4) mill base, lotion and pure water are subjected to mixing treatment 30min with 1000rpm, obtain cathode electrophoresis dope.
Embodiment 2
A kind of cathode electrophoresis dope, the raw material components including following mass fraction:
10 parts of mill base, 40 parts of lotion, 40 parts of pure water；
The mill base includes following components according to the mass fraction: 15 parts of organic silicon modified aqueous epoxy resin, propylene glycol first
15 parts of ether, 5 parts of acetic acid, 0.1 part of nonylphenol polyoxyethylene ether, 25 parts of deionized water, 30 parts of kaolin, 3 parts of carbon black；
The lotion includes following components according to the mass fraction: 35 parts of aqueous acrylic modified epoxy resin, NP-15 emulsification
4 parts of agent, 3 parts of acetic acid, 45 parts of deionized water.
The preparation method of above-mentioned cathode electrophoresis dope includes the following steps:
(1) each component is weighed according to the raw material proportioning of the cathode electrophoresis dope；
(2) by the organic silicon modified aqueous epoxy resin, propylene glycol monomethyl ether, acetic acid, nonylphenol polyoxyethylene ether, go from
Sub- water, kaolin and carbon black carry out mixing treatment 15min, milled processed to fineness≤15um, obtain mill base；
(3) the aqueous acrylic modified epoxy resin, NP-15 emulsifier, acetic acid, deionized water are subjected to mixing treatment
30min obtains lotion；
(4) mill base, lotion and pure water are subjected to mixing treatment 10min with 1500rpm, obtain cathode electrophoresis dope.
Embodiment 3
A kind of cathode electrophoresis dope, the raw material components including following mass fraction:
15 parts of mill base, 50 parts of lotion, 60 parts of pure water；
The mill base includes following components according to the mass fraction: 20 parts of organic silicon modified aqueous epoxy resin, diethylene glycol
13 parts of butyl ether, 6 parts of lactic acid, 0.5 part of nonylphenol polyoxyethylene ether, 35 parts of deionized water, 10 parts of kaolin, 20 parts of carbon black；
The lotion includes following components according to the mass fraction: 30 parts of aqueous acrylic modified epoxy resin, OP-15 emulsification
2 parts of agent, 1 part of lactic acid, 30 parts of deionized water.
The preparation method of above-mentioned cathode electrophoresis dope includes the following steps:
(1) each component is weighed according to the raw material proportioning of the cathode electrophoresis dope；
(2) by the organic silicon modified aqueous epoxy resin, butyl, lactic acid, nonylphenol polyoxyethylene ether, go
Ionized water, kaolin and carbon black carry out mixing treatment 15min, milled processed to fineness≤15um, obtain mill base；
(3) the aqueous acrylic modified epoxy resin, OP-15 emulsifier, lactic acid, deionized water are subjected to mixing treatment
45min obtains lotion；
(4) mill base, lotion and pure water are subjected to mixing treatment 25min with 1200rpm, obtain cathode electrophoresis dope.
The characteristic for the cathode electrophoresis dope that embodiment provides in order to better illustrate the present invention, below by embodiment 1,2,3
The cathode electrophoresis dope of preparation carries out the test of corresponding performance, and the results are shown in Table 1.
Table 1
As can be seen from Table 1, the cathode electrophoresis dope of preparation of the embodiment of the present invention, paint film appearance is complete, without shrinkage cavity, covers
Power is high, and hardness is high, and film thickness is low, and has the performances such as excellent anticorrosive property, acid resistance, alkali resistance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of cathode electrophoresis dope, it is characterised in that: the raw material components including following mass fraction:
10-20 parts of mill base, 30-50 parts of lotion, 40-60 parts of pure water；
The mill base includes following components according to the mass fraction: 10-20 parts of modified epoxy, environmentally friendly cosolvent 5-15 parts, in
With 1-6 parts of agent, 0.1-0.5 parts of surfactant, 25-40 parts of deionized water, 10-30 parts of kaolin, 3-23 parts of pigment；
The lotion includes following components according to the mass fraction: 30-40 parts of modified epoxy, 2-8 parts of emulsifier, and neutralizer 1-
8 parts, 30-50 parts of deionized water.
2. cathode electrophoresis dope as described in claim 1, it is characterised in that: the modified epoxy in the mill base is organic
Silicon modified aqueous epoxy resin；Modified epoxy in the lotion is aqueous acrylic modified epoxy resin.
3. cathode electrophoresis dope as described in claim 1, it is characterised in that: it is described environmental protection cosolvent be isopropanol, sec-butyl alcohol,
At least one of propylene glycol monomethyl ether or butyl.
4. cathode electrophoresis dope as described in claim 1, it is characterised in that: the neutralizer be in lactic acid or acetic acid at least
It is a kind of.
5. cathode electrophoresis dope as described in claim 1, it is characterised in that: the surfactant is propylene oxide condensation product
Class nonionic surfactant or nonylphenol polyoxyethylene ether class nonionic surfactant.
6. cathode electrophoresis dope as described in claim 1, it is characterised in that: the emulsifier is induced by alkyl hydroxybenzene polyoxyethylene
Ether.
7. cathode electrophoresis dope as described in claim 1, it is characterised in that: the pigment includes carbon black, phthalocyanine blue, titanium dioxide
One of.
8. a kind of preparation method of cathode electrophoresis dope, it is characterised in that: the following steps are included:
(1) each component is weighed according to the raw material proportioning of the cathode electrophoresis dope as described in any one of claim 1~7；
(2) modified epoxy, environmentally friendly solvent, neutralizer, surfactant, deionized water, kaolin, pigment are carried out
Mixing treatment, milled processed, obtain mill base；
(3) modified epoxy, emulsifier, neutralizer, deionized water are subjected to mixing treatment, obtain lotion；
(4) mill base, lotion, pure water are subjected to mixing treatment, obtain cathode electrophoresis dope.
9. the preparation method of cathode electrophoresis dope as claimed in claim 8, it is characterised in that: the stirring speed of the mixing treatment
Degree is 1000-1500rpm.
10. the preparation method of cathode electrophoresis dope as claimed in claim 8, it is characterised in that: in step (1), the grinding
The fineness of grind of processing is≤15 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832719.XA CN109233574A (en) | 2018-07-26 | 2018-07-26 | A kind of cathode electrophoresis dope and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810832719.XA CN109233574A (en) | 2018-07-26 | 2018-07-26 | A kind of cathode electrophoresis dope and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109233574A true CN109233574A (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810832719.XA Pending CN109233574A (en) | 2018-07-26 | 2018-07-26 | A kind of cathode electrophoresis dope and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778818A (en) * | 2021-01-22 | 2021-05-11 | 常州凯泽环保科技有限公司 | Anti-shrinkage-hole electrophoretic coating film-coated automobile sheet metal part |
| CN113980549A (en) * | 2021-11-04 | 2022-01-28 | 枣阳市润图化工有限责任公司 | Smooth low-temperature thick-film environment-friendly two-component electrophoretic paint without shrinkage cavity |
-
2018
- 2018-07-26 CN CN201810832719.XA patent/CN109233574A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112778818A (en) * | 2021-01-22 | 2021-05-11 | 常州凯泽环保科技有限公司 | Anti-shrinkage-hole electrophoretic coating film-coated automobile sheet metal part |
| CN112778818B (en) * | 2021-01-22 | 2022-01-14 | 常州凯泽环保科技有限公司 | Anti-shrinkage-hole electrophoretic coating film-coated automobile sheet metal part |
| CN113980549A (en) * | 2021-11-04 | 2022-01-28 | 枣阳市润图化工有限责任公司 | Smooth low-temperature thick-film environment-friendly two-component electrophoretic paint without shrinkage cavity |
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Application publication date: 20190118 |