CN108587406A - A kind of preparation method of low-temperature curing cathode electrophoresis paint - Google Patents
A kind of preparation method of low-temperature curing cathode electrophoresis paint Download PDFInfo
- Publication number
- CN108587406A CN108587406A CN201810515221.0A CN201810515221A CN108587406A CN 108587406 A CN108587406 A CN 108587406A CN 201810515221 A CN201810515221 A CN 201810515221A CN 108587406 A CN108587406 A CN 108587406A
- Authority
- CN
- China
- Prior art keywords
- parts
- added
- low
- preparation
- temperature curing
- 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.)
- Withdrawn
Links
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
- 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
-
- 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
- C09D5/4457—Polyepoxides containing special additives, e.g. pigments, polymeric particles
-
- 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
- C09D5/4465—Polyurethanes
-
- 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
- C09D5/4473—Mixture of polymers
-
- 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
- C09D5/4488—Cathodic paints
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The present invention relates to a kind of preparation methods of low-temperature curing cathode electrophoresis paint, belong to application fabric technical field.The present invention is in a manner of laccol chemical-grafting molecules main chain, polyurethane is after modified urushiol, the degree of order is improved between hard section in hard section area, microphase separation degree becomes larger, the raising of the crystal region degree of order can make the hard section chain arrangement of polyurethane tend to be regular and fine and close, intermolecular force becomes strong, small molecule is hindered to intramolecular diffusion, the solvent resistance for macroscopically showing paint film is improved, cross-linked network in paint film is more perfect, in glossiness, in terms of acid resistance and resistant to acetone wiping, this perfect cross-linked structure, reduce the ability that hydrone and small solvent molecule are spread to paint film in acid medium, the acid resistance of paint film is set to enhance, resistant to acetone wiping number dramatically increases, paint film is smooth, with good corrosion resistance, resistance to ag(e)ing.
Description
Technical field
The present invention relates to a kind of preparation methods of low-temperature curing cathode electrophoresis paint, belong to application fabric technical field.
Background technology
It comes out from cathode electrophoresis dope, because the paint film of its formation has excellent corrosion resistance, mechanical performance, and is suitble to certainly
Dynamicization application, is popularized quickly in the automotive industry, the baking temperature range of traditional cathode electrophoresis dope generally 170~
180℃.Currently, many industrial workpiece are with rubber, plastic or other material, it is desirable that dried together with electrophoretic coating after processing
It is dry, to reduce operation intensity, control cost.But such material toasts and is easily deformed or melts under the high temperature conditions.
Most widely used at present is the epoxy type cathode electrophoresis dope using the addition product of bisphenol A epoxide resin and organic amine as skeleton,
It has many advantages, such as excellent adhesive force, low-shrinkage, corrosion-resistant, chemicals-resistant.The baking temperature of conventional cathode electrophoretic coating
Generally 180 ~ 200 DEG C this so that the electrophoretic painting of heat-sensitive material is restricted.Low temperature curing type cathode electrophoresis dope in recent years
Research become cathode electrophoresis dope industry in most representative research direction.Using different sealers, temperature is unsealed
It is different.With the development of enclosed type toluene di-isocyanate(TDI) low temperature solution encapsulation technique, the solidification temperature of cathode electrophoresis dope is from 180
~ 200 DEG C are reduced to 150 ~ 170 DEG C.Although deblocking temperature reduces, the comprehensive performance of film is affected, and is such as applied
The hardness of the reduction of pliability of film, film generally can only achieve 1-2H.
To adapt to the demand of such technique, occurs the low temperature curing type cathode electrophoresis dope of few kind in the market.Low temperature
Curing type cathode electrodip painting not only contributes to the application of the auto parts and components with plastics and rubber, and can substantially reduce energy
Consumption, cathode electrodip painting common Organic leadP and tin catalyst in the past, due to toxicity is big, not environmentally the shortcomings of in Europe and hair
It is limited the use of up to country.Unleaded, the high anti-corrosive properties cathode electrodip painting of Wuxi environment-friendly type is a significant improvement in electrophoretic paint evolution.
Therefore in electrophoretic paint, excellent environment-friendly type drier is selected to improve electrophoresis product quality, and promote the competing of product in use
It is particularly important to strive power.
It is badly in need of a kind of defect can overcome the disadvantages that the prior art at present, the development to adapt to market, improves competitiveness, has more
The lower limit low temperature of low baking temperature, has the cathode electrophoresis dope of good corrosion resistance, decorative appearance, chemical resistance.
Invention content
The technical problems to be solved by the invention：For the flexibility of low temperature curing type cathode electrophoresis dope film in recent years
It reduces, toasts the problem of being easily deformed or melting under the high temperature conditions, provide a kind of preparation of low-temperature curing cathode electrophoresis paint
Method.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of preparation method of low-temperature curing cathode electrophoresis paint, specific preparation process are：
（1）Trimethylolpropane, montmorillonite, N methyldiethanol amine ultrasonic disperse are taken, and is heated to 100~105 DEG C, stirring 1
It is cooled to 40~50 DEG C after~2h, then isophorone diisocyanate is added dropwise, dibutyl tin laurate is added after being added dropwise,
1~2h of insulated and stirred, obtains reaction solution；
（2）Reaction solution is warming up to 70~80 DEG C, and epoxy resin E-12 30~40min of insulation reaction are added, Isosorbide-5-Nitrae-fourth is added
Glycol is cooled to 50~60 DEG C after 2~3h of insulation reaction, adds laccol, is cooled to room temperature after reacting 1~2h, ice vinegar is used in combination
Acid for adjusting pH obtains terminal hydroxy group cationic polyurethane resin to neutrality；
（3）Extracting epoxy resin E-51, bisphenol A type epoxy resin, polyethylene glycol, dimethyl benzylamine stir 1 at 120~130 DEG C
~2h, adds diethanol amine, be stirred to react at 110~120 DEG C after 3~5h be added terminal hydroxy group cationic polyurethane resin,
Ethylene glycol monobutyl ether is stirred to react 1~2h, obtains modified epoxy；
（4）It takes nano bismuth oxide, 20~30min of ultrasonic disperse in deionized water is added, add lemon acid for adjusting pH to 5~6,
And 70~80 DEG C of 2~3h of stirring are heated to, filter residue is filtered to obtain, by filter residue washing and drying, obtains citric acid modification nano bismuth oxide；
（5）It takes modified epoxy to be added in deionized water, 10~15min of dispersion is sheared with 8000~12000r/min, then add
Enter citric acid modification nano bismuth oxide, ethylene glycol monobutyl ether, fineness of grind is to≤15 μm after mixing, and discharge to obtain low-temperature setting
Cathode electrodip painting.
The parts by weight of each raw material are 1.2~1.8 part of three hydroxyl first in the terminal hydroxy group cationic polyurethane resin preparation process
Base propane, 0.6~0.9 part of montmorillonite, 12~18 parts of N methyldiethanol amines, 45~60 parts of isophorone diisocyanate, 0.1
~0.2 part of dibutyl tin laurate, 5.0~7.5 parts of epoxy resin E-12,8~12 parts of 1,4-butanediol, 6~9 parts of laccols.
Step（3）Described weight of material part is 200~300 parts of epoxy resin E-51,115~175 parts of bisphenol type epoxy trees
Fat, 20~30 parts of polyethylene glycol, 0.04~0.06 part of dimethyl benzylamine, 30~45 parts of diethanol amine, 40~60 parts of terminal hydroxy group sun
Ion polyurethane resin, 80~120 parts of ethylene glycol monobutyl ethers.
Step（4）The nano bismuth oxide and the mass ratio of deionized water are 1：3~1：10.
Step（5）The modified epoxy, deionized water, citric acid modification nano bismuth oxide, ethylene glycol monobutyl ether
Parts by weight be 200~300 parts of modified epoxies, 200~300 parts of deionized waters, 5~6 parts of citric acid modification nano bismuth oxides,
80~120 parts of ethylene glycol monobutyl ethers.
Compared with other methods, advantageous effects are the present invention：
（1）The present invention is substituted with the bismuth oxide with the green safe characteristic such as inexpensive, disposable, hypotoxicity and low-activity
Leaded, sn-containing compound is surface modified nano bismuth oxide by citric acid, improves its stability in a solvent, and
The activation energy of chemical reaction is reduced, bismuth compound reduces the deblocking temperature of occlusive polyurethane during film curing, reduces
The baking temperature of paint film；
（2）The present invention in a manner of laccol chemical-grafting molecules main chain, polyurethane after modified urushiol, hard section in hard section area it
Between the degree of order be improved, microphase separation degree becomes larger, and the raising of the crystal region degree of order can make the hard section chain of polyurethane arrange
In regular and fine and close, intermolecular force becomes strong, hinders small molecule to intramolecular diffusion, macroscopically shows paint film
Solvent resistance is improved, and the cross-linked network in paint film is more perfect, in terms of glossiness, acid resistance and resistant to acetone wiping, this
The perfect cross-linked structure of kind, reduces the ability that hydrone and small solvent molecule are spread to paint film in acid medium, makes paint film
Acid resistance enhances, and resistant to acetone wiping number dramatically increases, and paint film is smooth, has good corrosion resistance, resistance to ag(e)ing.
Specific implementation mode
1.2~1.8g trimethylolpropanes, 0.6~0.9g montmorillonites, 12~18gN- methyl diethanolamines is taken to be packed into three
In mouth flask, with 300W 1~2h of ultrasonic disperse, and 100~105 DEG C are heated to, 1~2h, cooling are stirred with 300~400r/min
To 40~50 DEG C, 45~60g isophorone diisocyanate is added dropwise with 1mL/min, 0.1~0.2g February is added after being added dropwise
Dilaurylate, 1~2h of insulated and stirred, obtains reaction solution, reaction solution is warming up to 70~80 DEG C, and 5.0~7.5g rings are added
It is added 8~12g1 after oxygen resin E-12,30~40min of insulation reaction, 4- butanediols, it is cooled to 50 after 2~3h of insulation reaction~
60 DEG C, 6~9g laccols are added, room temperature is cooled to after reacting 1~2h, is used in combination glacial acetic acid to adjust pH to neutrality, obtains terminal hydroxy group sun
Ion polyurethane resin, takes 200~300g epoxy resin E-51,115~175g bisphenol A type epoxy resin, the poly- second of 20~30g two
Alcohol, 0.04~0.06g dimethyl benzylamines stir 1~2h with 300~400r/min at 120~130 DEG C, add 30~45g
Diethanol amine is stirred to react after 3~5h at 110~120 DEG C and 40~60g terminal hydroxy group cationic polyurethane resins is added, 80~
120g ethylene glycol monobutyl ethers continue to be stirred to react 1~2h, obtain modified epoxy, take 20~30g nano bismuth oxides, are added 90
In~200mL deionized waters, with 300W 20~30min of ultrasonic disperse, lemon acid for adjusting pH is added to 5~6, and be heated to 70
~80 DEG C, 2~3h is stirred with 300~400r/min, colloidal solution is obtained, colloidal solution is filtered into obtain filter residue, is washed with deionized water
It washs filter residue 2~3 times, then filter residue is placed in drying box, dried to constant weight at 80~90 DEG C, it is nano oxidized to obtain citric acid modification
Bismuth takes 200~300g modified epoxies, is added in 200~300mL deionized waters, with 8000~12000r/min shearings point
10~15min is dissipated, adds 5~6g citric acid modification nano bismuth oxides, 80~120g ethylene glycol monobutyl ethers fall after mixing
Enter extremely≤15 μm of fineness of grind in sand mill, discharge to obtain low-temperature curing cathode electrophoresis paint.
Example 1
1.2g trimethylolpropanes, 0.6g montmorillonites, 12gN- methyl diethanolamines is taken to be fitted into three-necked flask, with 300W ultrasounds
Disperse 1h, and be heated to 100 DEG C, 1h is stirred with 300r/min, is cooled to 40 DEG C, it is different that 45g isophorones two are added dropwise with 1mL/min
Cyanate, is added 0.1g dibutyl tin laurates after being added dropwise, insulated and stirred 1h obtains reaction solution, reaction solution is warming up to
70 DEG C, and 5.0g epoxy resin E-12 are added, it is added 8g1 after insulation reaction 30min, 4- butanediols cool down after insulation reaction 2h
To 50 DEG C, 6g laccols are added, room temperature is cooled to after reacting 1h, is used in combination glacial acetic acid to adjust pH to neutrality, obtains terminal hydroxy group cation
Polyurethane resin takes 200g epoxy resin E-51,115g bisphenol A type epoxy resin, 20g polyethylene glycol, 0.04g dimethylbenzyls
Amine stirs 1h with 300r/min at 120 DEG C, adds 30g diethanol amine, and the ends 40g are added after 3h is stirred to react at 110 DEG C
Hydroxyl cationic polyurethane resin, 80g ethylene glycol monobutyl ethers continue to be stirred to react 1h, obtain modified epoxy, take 20g nanometers
Bismuth oxide is added in 90mL deionized waters, with 300W ultrasonic disperse 20min, adds lemon acid for adjusting pH to 5, and be heated to
70 DEG C, 2h is stirred with 300r/min, colloidal solution is obtained, colloidal solution is filtered into obtain filter residue, filter residue is washed with deionized 2 times,
Filter residue is placed in drying box again, is dried to constant weight at 80 DEG C, is obtained citric acid modification nano bismuth oxide, take 200g modified epoxies
Resin is added in 200mL deionized waters, shears dispersion 10min with 8000r/min, it is nano oxidized to add 5g citric acid modifications
Bismuth, 80g ethylene glycol monobutyl ethers pour into extremely≤15 μm of fineness of grind in sand mill after mixing, and discharge to obtain low-temperature setting cathode
Electrophoretic paint.
Example 2
1.5g trimethylolpropanes, 0.75g montmorillonites, 15gN- methyl diethanolamines is taken to be fitted into three-necked flask, it is super with 300W
Sound disperses 1h, and is heated to 13 DEG C, stirs 1h with 350r/min, is cooled to 45 DEG C, and 52g isophorones two are added dropwise with 1mL/min
Isocyanates, is added 0.15g dibutyl tin laurates after being added dropwise, insulated and stirred 1h obtains reaction solution, reaction solution is heated up
To 75 DEG C, and 5.8g epoxy resin E-12 are added, are added 10g1 after insulation reaction 35min, 4- butanediols drop after insulation reaction 2h
Temperature adds 8g laccols to 55 DEG C, and room temperature is cooled to after reacting 1h, and glacial acetic acid is used in combination to adjust pH to neutrality, obtain terminal hydroxy group sun from
Sub- polyurethane resin takes 250g epoxy resin E-51,145g bisphenol A type epoxy resin, 25g polyethylene glycol, 0.05g dimethylbenzyls
Amine stirs 1h with 350r/min at 125 DEG C, adds 37g diethanol amine, and the ends 50g are added after 4h is stirred to react at 115 DEG C
Hydroxyl cationic polyurethane resin, 100g ethylene glycol monobutyl ethers continue to be stirred to react 1h, obtain modified epoxy, take 25g nanometers
Bismuth oxide is added in 150mL deionized waters, with 300W ultrasonic disperse 25min, adds lemon acid for adjusting pH to 5, and be heated to
75 DEG C, 2h is stirred with 350r/min, colloidal solution is obtained, colloidal solution is filtered into obtain filter residue, filter residue is washed with deionized 2 times,
Filter residue is placed in drying box again, is dried to constant weight at 85 DEG C, is obtained citric acid modification nano bismuth oxide, take 250g modified epoxies
Resin is added in 250mL deionized waters, shears dispersion 13min with 10000r/min, it is nano oxidized to add 5g citric acid modifications
Bismuth, 100g ethylene glycol monobutyl ethers pour into extremely≤15 μm of fineness of grind in sand mill after mixing, and discharge to obtain low-temperature setting cathode
Electrophoretic paint.
Example 3
1.8g trimethylolpropanes, 0.9g montmorillonites, 18gN- methyl diethanolamines is taken to be fitted into three-necked flask, with 300W ultrasounds
Disperse 2h, and be heated to 105 DEG C, 2h is stirred with 400r/min, is cooled to 50 DEG C, it is different that 60g isophorones two are added dropwise with 1mL/min
Cyanate, is added 0.2g dibutyl tin laurates after being added dropwise, insulated and stirred 2h obtains reaction solution, reaction solution is warming up to
80 DEG C, and 7.5g epoxy resin E-12 are added, it is added 12g1 after insulation reaction 40min, 4- butanediols cool down after insulation reaction 3h
To 60 DEG C, 9g laccols are added, room temperature is cooled to after reacting 2h, is used in combination glacial acetic acid to adjust pH to neutrality, obtains terminal hydroxy group cation
Polyurethane resin takes 300g epoxy resin E-51,175g bisphenol A type epoxy resin, 30g polyethylene glycol, 0.06g dimethylbenzyls
Amine stirs 2h with 400r/min at 130 DEG C, adds 45g diethanol amine, and the ends 60g are added after 5h is stirred to react at 120 DEG C
Hydroxyl cationic polyurethane resin, 120g ethylene glycol monobutyl ethers continue to be stirred to react 2h, obtain modified epoxy, take 30g nanometers
Bismuth oxide is added in 200mL deionized waters, with 300W ultrasonic disperse 30min, adds lemon acid for adjusting pH to 6, and be heated to
80 DEG C, 3h is stirred with 400r/min, colloidal solution is obtained, colloidal solution is filtered into obtain filter residue, filter residue is washed with deionized 3 times,
Filter residue is placed in drying box again, is dried to constant weight at 90 DEG C, is obtained citric acid modification nano bismuth oxide, take 300g modified epoxies
Resin is added in 300mL deionized waters, shears dispersion 15min with 12000r/min, it is nano oxidized to add 6g citric acid modifications
Bismuth, 120g ethylene glycol monobutyl ethers pour into extremely≤15 μm of fineness of grind in sand mill after mixing, and discharge to obtain low-temperature setting cathode
Electrophoretic paint.
The cathode electrodip painting of low-temperature curing cathode electrophoresis paint and the production of Guangzhou company prepared by the present invention is detected,
Specific testing result such as following table table 1：
Detection method：
（1）Appearance of film：Range estimation；
（2）Impact strength detects：It is detected according to detection method in GB/T1732-93；
（3）Pencil hardness：It is detected according to detection method in GB/T6739-2006；
（4）Adhesive force detects：It is detected according to detection method in GB/T9286-1998.
1 low-temperature curing cathode electrophoresis paint performance characterization of table
Acid resistance, the alkaline resistance properties for the low-temperature curing cathode electrophoresis paint paint film that as shown in Table 1 prepared by the present invention are superior, and paint film is smooth
It is smooth, there is good corrosion resistance, resistance to ag(e)ing, pencil hardness is high, has broad application prospects.
Claims (5)
1. a kind of preparation method of low-temperature curing cathode electrophoresis paint, which is characterized in that specifically preparation process is：
（1）Trimethylolpropane, montmorillonite, N methyldiethanol amine ultrasonic disperse are taken, and is heated to 100~105 DEG C, stirring 1
It is cooled to 40~50 DEG C after~2h, then isophorone diisocyanate is added dropwise, dibutyl tin laurate is added after being added dropwise,
1~2h of insulated and stirred, obtains reaction solution；
（2）Reaction solution is warming up to 70~80 DEG C, and epoxy resin E-12 30~40min of insulation reaction are added, Isosorbide-5-Nitrae-fourth is added
Glycol is cooled to 50~60 DEG C after 2~3h of insulation reaction, adds laccol, is cooled to room temperature after reacting 1~2h, ice vinegar is used in combination
Acid for adjusting pH obtains terminal hydroxy group cationic polyurethane resin to neutrality；
（3）Extracting epoxy resin E-51, bisphenol A type epoxy resin, polyethylene glycol, dimethyl benzylamine stir 1 at 120~130 DEG C
~2h, adds diethanol amine, be stirred to react at 110~120 DEG C after 3~5h be added terminal hydroxy group cationic polyurethane resin,
Ethylene glycol monobutyl ether is stirred to react 1~2h, obtains modified epoxy；
（4）It takes nano bismuth oxide, 20~30min of ultrasonic disperse in deionized water is added, add lemon acid for adjusting pH to 5~6,
And 70~80 DEG C of 2~3h of stirring are heated to, filter residue is filtered to obtain, by filter residue washing and drying, obtains citric acid modification nano bismuth oxide；
（5）It takes modified epoxy to be added in deionized water, 10~15min of dispersion is sheared with 8000~12000r/min, then add
Enter citric acid modification nano bismuth oxide, ethylene glycol monobutyl ether, fineness of grind is to≤15 μm after mixing, and discharge to obtain low-temperature setting
Cathode electrodip painting.
2. a kind of preparation method of low-temperature curing cathode electrophoresis paint as described in claim 1, which is characterized in that the terminal hydroxy group
The parts by weight of each raw material are 1.2~1.8 parts of trimethylolpropanes, 0.6~0.9 part of illiteracy in cationic polyurethane resin preparation process
De- soil, 12~18 parts of N methyldiethanol amines, 45~60 parts of isophorone diisocyanate, 0.1~0.2 part of two fourth of tin dilaurate
Ji Xi, 5.0~7.5 parts of epoxy resin E-12,8~12 parts of 1,4-butanediol, 6~9 parts of laccols.
3. a kind of preparation method of low-temperature curing cathode electrophoresis paint as described in claim 1, which is characterized in that step（3）Institute
It is 200~300 parts of epoxy resin E-51,115~175 parts of bisphenol A type epoxy resins, 20~30 parts of poly- second two to state weight of material part
Alcohol, 0.04~0.06 part of dimethyl benzylamine, 30~45 parts of diethanol amine, 40~60 parts of terminal hydroxy group cationic polyurethane resins, 80
~120 parts of ethylene glycol monobutyl ethers.
4. a kind of preparation method of low-temperature curing cathode electrophoresis paint as described in claim 1, which is characterized in that step（4）Institute
The mass ratio for stating nano bismuth oxide and deionized water is 1：3~1：10.
5. a kind of preparation method of low-temperature curing cathode electrophoresis paint as described in claim 1, which is characterized in that step（5）Institute
State modified epoxy, deionized water, citric acid modification nano bismuth oxide, ethylene glycol monobutyl ether parts by weight be 200~300 parts
Modified epoxy, 200~300 parts of deionized waters, 5~6 parts of citric acid modification nano bismuth oxides, 80~120 parts of ethylene glycol lists
Butyl ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515221.0A CN108587406A (en) | 2018-05-25 | 2018-05-25 | A kind of preparation method of low-temperature curing cathode electrophoresis paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515221.0A CN108587406A (en) | 2018-05-25 | 2018-05-25 | A kind of preparation method of low-temperature curing cathode electrophoresis paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108587406A true CN108587406A (en) | 2018-09-28 |
Family
ID=63629578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810515221.0A Withdrawn CN108587406A (en) | 2018-05-25 | 2018-05-25 | A kind of preparation method of low-temperature curing cathode electrophoresis paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108587406A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002294141A (en) * | 2001-03-29 | 2002-10-09 | Nippon Paint Co Ltd | Cationic electrodeposition coating material composition |
| CN103031038A (en) * | 2012-12-25 | 2013-04-10 | 广东科德化工实业有限公司 | Low-temperature cured cathode electrophoretic coating, and preparation method and use method thereof |
| CN105504214A (en) * | 2015-12-25 | 2016-04-20 | 武汉科利尔新材料有限公司 | Preparation method of biomass polyurethane electrophoretic resin and electrophoretic paint thereof |
| CN105949865A (en) * | 2016-06-02 | 2016-09-21 | 广德县中银化工有限责任公司 | Preparing technology for environment-friendly cathode electrophoresis paint |
| CN106366863A (en) * | 2016-08-29 | 2017-02-01 | 董晓 | Preparation method of cathode electrophoresis paint |
| CN106947373A (en) * | 2017-04-12 | 2017-07-14 | 浩力森化学科技（江苏）有限公司 | The SiO of surface-modified nano containing acrylate polymer2The cation electrodeposition coating of microballoon |
-
2018
- 2018-05-25 CN CN201810515221.0A patent/CN108587406A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002294141A (en) * | 2001-03-29 | 2002-10-09 | Nippon Paint Co Ltd | Cationic electrodeposition coating material composition |
| CN103031038A (en) * | 2012-12-25 | 2013-04-10 | 广东科德化工实业有限公司 | Low-temperature cured cathode electrophoretic coating, and preparation method and use method thereof |
| CN105504214A (en) * | 2015-12-25 | 2016-04-20 | 武汉科利尔新材料有限公司 | Preparation method of biomass polyurethane electrophoretic resin and electrophoretic paint thereof |
| CN105949865A (en) * | 2016-06-02 | 2016-09-21 | 广德县中银化工有限责任公司 | Preparing technology for environment-friendly cathode electrophoresis paint |
| CN106366863A (en) * | 2016-08-29 | 2017-02-01 | 董晓 | Preparation method of cathode electrophoresis paint |
| CN106947373A (en) * | 2017-04-12 | 2017-07-14 | 浩力森化学科技（江苏）有限公司 | The SiO of surface-modified nano containing acrylate polymer2The cation electrodeposition coating of microballoon |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107629179B (en) | Modified acrylic emulsion for conductive ink and preparation method thereof | |
| CN106832183A (en) | A kind of Graphene modified cathode polyurethane electrophoresis resin and its cataphoresis paint composition | |
| CN107141425A (en) | A kind of baking vanish aqueous epoxy resins and preparation method and application | |
| CN102002305A (en) | Water-based precoated coiled material coating back paint and preparation method thereof | |
| CN109384936B (en) | Carbon nanotube grafted hydroxyl-terminated polyurethane electrophoretic resin, cathode polyurethane electrophoretic paint and preparation methods thereof | |
| EP3845618A1 (en) | Powder coating used for household appliance coiled material and preparation method therefor | |
| CN110885458B (en) | Polymer wax powder with self-repairing function and preparation method thereof | |
| CN108192437B (en) | Water-based high-temperature metallic paint capable of being used for wet-on-wet floating-free system and construction process thereof | |
| CN109233390B (en) | Environment-friendly epoxy resin coating for buildings | |
| CN108587406A (en) | A kind of preparation method of low-temperature curing cathode electrophoresis paint | |
| CN113527984A (en) | High-salt-spray-resistance water-based smooth coating and preparation method thereof | |
| CN111234581A (en) | Engineering machinery decorative coating and preparation method thereof | |
| CN107286802A (en) | Refitted car ultrafast dry one-component priming paint and preparation method | |
| CN111073439A (en) | Protective adhesive special for chemical milling of acidic media such as titanium alloy and stainless steel | |
| CN102827529B (en) | Water-based epoxy antirust paint of iron oxide reds and preparation method thereof | |
| CN112457748B (en) | High-toughness low-temperature-resistant powder coating and preparation method thereof | |
| CN114085538A (en) | High-temperature-resistant natural rubber material and preparation method thereof | |
| CN114672235A (en) | High-wear-resistance quick-drying water-based acrylic polyurethane finish paint and preparation method thereof | |
| CN110684438B (en) | Water-based anti-corrosion anti-aging wave-absorbing coating and preparation method thereof | |
| CN112322133A (en) | Thick film impact-resistant corrosion-resistant cathode electrophoretic coating and preparation process thereof | |
| CN111440399A (en) | PVC paste for glove production and preparation method thereof | |
| CN109054613A (en) | Low VOC car repair floating coating of a kind of solvent type and preparation method thereof | |
| CN111286255A (en) | Ketimine modified epoxy flexible emulsion and preparation method thereof | |
| CN112980286A (en) | Novel anticorrosive paint and preparation method thereof | |
| CN110819217A (en) | Mirror silver powder coating for electric vehicle and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180928 |
|
| WW01 | Invention patent application withdrawn after publication |