CN108129964A - The preparation method of halogenated polyethylene modified water-based alkyd resin and coating - Google Patents
The preparation method of halogenated polyethylene modified water-based alkyd resin and coating Download PDFInfo
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/46—Polyesters chemically modified by esterification
- C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
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- 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
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- 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
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- C08K2003/3045—Sulfates
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- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention proposes the preparation method of a kind of halogenated polyethylene modified water-based alkyd resin and coating, and halogenated polyethylene modified water-based alkyd resin preparation method includes：By in oleic acid, rosin, glycerine, pentaerythrite, neopentyl glycol, cis-butenedioic anhydride, phthalic anhydride, alcoholysis catalysts input reaction kettle, firing up reflux is kept the temperature；Detect viscosity, cooling input halogenated polyethylene, heat preservation；Temperature is dropped, input cosolvent, emulsifier, greasy dirt emulsifier, emulsification；Stirring, adjusts pH, and varnish dry plate is realized.The present invention is cleverly using halogenated polyethylene on synthesis phase bridge joint to fatty acid alkyd resin, it is emulsified simultaneously, obtain the PE modified alkide resin emulsion of a water based halide, then Water-based alkyd anti-corrosive paint and water alcohol acid finishing coat are made using the aqueous alkide resin emulsion so that Water-borne alkyd coating has the performances such as very excellent quick-drying, initial stage resistance to dripping property, chemical resistance, weatherability, water resistance.
Description
Technical field
The present invention relates to painting fields, particularly relate to the preparation of a kind of halogenated polyethylene modified water-based alkyd resin and coating
Method.
Background technology
As country is more and more stringenter to environmental requirement, water paint has welcome spring, in the items of optimization water paint
While performance indicator, all in the cost problem for paying close attention to water paint, most of raw material of water paint is base-material for everybody,
Solves the cost problem of base-material, the cost problem for just solving water paint substantially.
For the four characteristics of steel construction factory, 1, price it is low；2nd, ground not ball blast not grinding process；3rd, paint film is thin and needs
With preferable antiseptic property；4th, paint film initial stage and final water resistance；
Invention content
The present invention proposes the preparation method of a kind of halogenated polyethylene modified water-based alkyd resin and coating, can.
The technical proposal of the invention is realized in this way：A kind of system of halogenated polyethylene modified water-based alkyd resin and coating
Preparation Method, including the following component according to mass fraction meter：Oleic acid 25-30%, rosin 5-6%, glycerine 5-8%, pentaerythrite
2-4%, neopentyl glycol 1-2%, cis-butenedioic anhydride 0.5-1%, phthalic anhydride 12-14%, halogenated polyethylene 4-6%, alcoholysis catalysts 0.01-
0.02%th, cosolvent 3-5%, emulsifier 1-2%, greasy dirt emulsifier 0.5-1%, neutralizer 0.5-1.0%, antifoaming agent 0.01-
0.03%th, antimildew disinfectant 0.1-0.3%, deionized water 30-32%；
Preparation method includes the following steps：
Step a. reacts oleic acid, rosin, glycerine, pentaerythrite, neopentyl glycol, cis-butenedioic anhydride, phthalic anhydride, alcoholysis catalysts input
In kettle, firing up flows back to 180 DEG C dimethylbenzene is slowly added into since return duct, keeps the temperature 3h；
Step b. is respectively with 200 DEG C, 230 DEG C, 260 DEG C of each heat preservation 1h；
Step c. is warming up to 260-265 DEG C of heat preservation, detects its viscosity, using form pipe test to 14-16S；
When step d. cools to 120 DEG C, halogenated polyethylene is put into, keeps the temperature 1h；
Temperature is reduced to 80-90 DEG C by step e., and input cosolvent, emulsifier, greasy dirt emulsifier emulsify 30 minutes；
Temperature is reduced to 40-50 DEG C by step f., and input neutralizer, antifoaming agent, antimildew disinfectant and deionized water stir
10-15 minutes, adjustment pH value was between 8.0-8.5；
Step g. varnish dry plate is realized：Take 100 grams of resin aqueous emulsions, 1 gram of composite drier, directly spray after stirring evenly
Plate is on iron plate, and drying in 25 DEG C of insulating boxs of placement is tested surface drying and done solid work, the test synthesis physical property from after doing 48 hours.
Preferably, the oleic acid includes but not limited to：All kinds of recycling greases, aliphatic acid, soybean oleic acid, linolenic acid,
Cocinic acid；Halogenated polyethylene includes：Chlorinated rubber polyethylene, highly-chlorinated polyethylene, chlorosulfonated polyethylene, Vinylidene Chloride.
Preferably, the step c the specific steps are 260-265 DEG C of heat preservation is warming up to, its viscosity is detected, using form
Pipe test is oily to 14-16S, wherein sample：200#=10：8.
Preferably, the step f the specific steps are temperature is reduced to 40-50 DEG C, input neutralizer, antifoaming agent,
Antimildew disinfectant and deionized water stir 10-15 minutes, and adjustment pH value is between 8.0-8.5.
Preferably, the step g varnish dry plate realize the specific steps are：Take 100 grams of resin aqueous emulsions, 1 gram of U.S.
421 composite drier of OM G companies of state, directly spray plate is dry in 25 DEG C of insulating boxs on iron plate, placing after stirring evenly, test
It surface drying and does solid work, the test synthesis physical property after 48 hours dry.
The method that water alcohol acid antirust bottom surface paint is prepared according to above-mentioned halogenated polyethylene modified water-based alkyd resin, system
Preparation Method includes the following steps：
Step a. adds in water based halide PE modified alkide resin emulsion in production cylinder, will be aqueous using deionized water
Dispersant, aqueous defoamer, anti-flash rusting agent, drier dilution are added in production cylinder, using 300-400 revs/min of 5-10 points of stirring
Clock obtains prefabricated slurry A；
Step b. is slowly added into PMA, aqueous anti-settling slurry, corrosion turn when stirring prefabricated slurry A using 300-400 revs/min
Agent, titanium dioxide, coarse whiting, iron oxide black, iron oxide red, pigment scarlet powder, phthalocyanine blue, barium sulfate, aqueous zinc phosphate, using 500-
600 revs/min are stirred 15-20 minutes, obtain prefabricated slurry B；
Prefabricated slurry B is ground to corresponding fineness by step c. using sand mill, and the control of embodiment 4-6 fineness is micro- 50
Rice, embodiment 7-9 fineness are controlled at 25 microns；
Step d. using deionized water will thickener, anti skinning agent dilution after add in production cylinder in, using 400-600 turn/
Divide stirring 15-20 minutes, adjusted pH value to 8.5-9 with neutralizer；
The deionized water of the steel structure aqueous alcohol acid antirust paint made addition 10-15% is diluted by step e., is adopted
Spray viscosity is adjusted to 30-40S with T-4 glasss, is sprayed using 2.0-2.5 bore spray guns, ground uses tinplate sheet, beats
Direct spraying after mill, while respectively 2 blocks of grounds of spraying do not make the model of any processing, the dry plate thickness control of crop performance detection exists
It 20-30 microns, is detected under room temperature from after dry 48 hours, makees the dry plate thickness control of pattern detection at 50-60 microns, room temperature
Under the conditions of detected from after dry 7 days.
Compared with prior art, the advantage of the invention is that：Such product is with dry speed is ultrafast, weather resistance is excellent, water-fast
The features such as property is super good, antiseptic property is excellent, chemical-resistance is excellent, at low cost；The present invention is cleverly being synthesized using halogenated polyethylene
It on stage bridge joint to fatty acid alkyd resin, while is emulsified, obtains the PE modified alkyd tree of a water based halide
Then fat liquor makes Water-based alkyd anti-corrosive paint and water alcohol acid finishing coat so that aqueous alcoholic using the aqueous alkide resin emulsion
Acid paint with very excellent quick-drying, initial stage resistance to dripping property, chemical resistance, weatherability, water resistance, resistance to salt water, anti-corrosive properties,
The performances such as low cost can be widely used in all kinds of large-scale steel structures, water-born paint for car chassis, automobile water compartment, train chassis paint, engineering machine
The fields such as tool.
Specific embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
Halogenated polyethylene modified water-based alkyd resin raw material is as follows：
Oleic acid (all kinds of recycling greases, aliphatic acid, soybean oleic acid, linolenic acid, cocinic acid etc.)
Rosin (422# Chengdu great achievement chemical industry)
Glycerine (Hong Kong three is invited joins chemical industry forever)
Pentaerythrite (the remote chemical industry of Zhengzhou intelligence)
Neopentyl glycol (Anhui Chuzhou gold source chemical industry)
Cis-butenedioic anhydride (the permanently strong chemical industry in Shanxi)
Phthalic anhydride (opens up industry and trade in Shandong Shen)
Halogenated polyethylene (chlorinated rubber, highly-chlorinated polyethylene, chlorosulfonated polyethylene, Vinylidene Chloride Shandong height letter chemistry)
Cosolvent (ethylene glycol monobutyl ether, propylene glycol monobutyl ether, dipropylene, butyl, polyethylene glycol,
Diethylene glycol dimethyl ether, n-butanol etc. are one or more)
Reflux solvent (dimethylbenzene sinopec)
Neutralizer (one of which such as N, N- dimethylethanolamine, triethylamine, ammonium hydroxide, tetramethyl ammonium hydroxide, AMP-95 with
On)
Antifoaming agent (BYK-024BYK)
Emulsifier (alkyl phenol polyoxyethylene ether class, Ben-zylphenol Polyoxyethyl Ether, phenethyl phenol polyethenoxy ether, fatty alcohol
Polyvinylether, phenethyl phenol polyethenoxy ether polyethenoxy ether, aliphatic amine polyoxyethylene ether, fatty acid ethylene oxide addition product,
Castor oil ethylene oxide adduct, alkylbenzenesulfonate, alkylnaphthalene sulfonate, alkylsulfonate, dialkyl succinylsuccinate sulfonated ester,
Sulfate, phosphate, phosphite etc. are one or more) greasy dirt emulsifier (5088 Chongqing wheat figure)
Antimildew disinfectant (640 DOW of America DOW)
Table 1：1~embodiment of embodiment, 3 formulation ratio
Preparation method is：
Oleic acid, rosin, glycerine, pentaerythrite, neopentyl glycol, cis-butenedioic anhydride, phthalic anhydride, alcoholysis catalysts are put into reaction kettle,
Firing up flows back to 180 DEG C dimethylbenzene is slowly added into since return duct, keeps the temperature 3h；
Respectively with 200 DEG C, 230 DEG C, 260 DEG C of each heat preservation 1h；
260-265 DEG C of heat preservation is warming up to, detects its viscosity, using form pipe test to 14-16S (sample oil：200#=10：
8)；
When cooling to 120 DEG C, halogenated polyethylene is put into, keeps the temperature 1h；
Temperature is reduced to 80-90 DEG C, input cosolvent, emulsifier, greasy dirt emulsifier emulsify 30 minutes；
Temperature is reduced to 40-50 DEG C, input neutralizer, antifoaming agent, antimildew disinfectant and deionized water stir 10-15
Minute, adjustment pH value is between 8.0-8.5.
Dry plate is realized：100 grams of resin aqueous emulsions are taken, 1.5 grams of composite driers, directly spray plate is in iron plate after stirring evenly
On, it is dry in 25 DEG C of insulating boxs of placement, it tests surface drying and does solid work, the test synthesis physical property from after doing 48 hours.
Table 2：3 varnish performance of embodiment 1- embodiments is tested
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Execution standard |
| Surface drying, min | 40 | 45 | 55 | GB/T1728 |
| It does solid work, h | 16 | 20 | 24 | GB/T1728 |
| Initial stage water resistance | It is qualified | It is qualified | It is qualified | GB/T1733 |
| Water resistance | 720 | 660 | 480 | GB/T1733 |
| Gloss, % | 95 | 110 | 140 | GB/T1743 |
| Weatherability, h | 400 | 360 | 320 | GB/T14522 |
| Salt spray resistance, h | 360 | 306 | 288 | GB/T1771 |
Initial stage water resistance：2h after surface drying, the test of dripping property after natural drying of dripping, allow paint film slightly to whiten, but must
It must can restore after 2h.
2nd, water alcohol acid priming paint, finishing coat
Raw material is as follows：
The PE modified alkyd resin of water based halide (self-control)
Aqueous dispersion (760W enlightening is high)
Aqueous defoamer (BYK-1710 BYK)
Anti- flash rusting agent (ten pine of ZH-55 Jiangsu)
Drier (421 U.S. OMG)
Aqueous anti-settling slurry (T701 self-controls)
Rust conversion agent (5024 Chongqing wheat states science and technology)
Rutile type titanium white (one hundred profit connection of BLR-699)
Iron oxide black (Xiang Tan span new century)
Pigment scarlet powder (3132 new capital chemical industry)
Phthalocyanine blue (the bis- happy chemical industry of BGS)
Red lead powder (Chuan Xi red lead powders factory of Guanghan City)
Iron oxide red (190D new capital chemical industry)
Coarse whiting (the 1250 rich chemical industry of mesh Henan barium)
Blanc fixe (the 3000 prosperous industry in mesh blanc fixe Chengdu)
Aqueous zinc phosphate (PZ04B rings fine jade chemistry)
Water-based thickener (MT-105A engraves this in sea)
Anti skinning agent (0445 U.S. OMG)
Cosolvent (tri- wood of PMA)
Deionized water (self-control)
Table 3：9 water alcohol acid bottom of embodiment 4- embodiments, the formulation ratio of finishing coat
Technique：
1st, the PE modified alkide resin emulsion of water based halide is added in production cylinder, using deionized water by aqueous dispersion
Agent, aqueous defoamer, anti-flash rusting agent, drier dilution are added in production cylinder, are stirred 5-10 minutes, obtained using 300-400 revs/min
To prefabricated slurry A；
2nd, using 300-400 revs/min be slowly added into when stirring prefabricated slurry A PMA, aqueous anti-settling slurry, rust conversion agent,
Titanium dioxide, coarse whiting, iron oxide black, iron oxide red, pigment scarlet powder, phthalocyanine blue, barium sulfate, aqueous zinc phosphate, using 500-600 turn/
Divide stirring 15-20 minutes, obtain prefabricated slurry B；
3rd, prefabricated slurry B is ground to by corresponding fineness using sand mill, embodiment 4-6 fineness is controlled at 50 microns, real
7-9 fineness control is applied at 25 microns；
4th, it will be added in production cylinder after thickener, anti skinning agent dilution using deionized water, stirred using 400-600 revs/min
It mixes 15-20 minutes, is adjusted pH value to 8.5-9 with neutralizer.
Dry plate is realized：
The deionized water of the steel structure aqueous alcohol acid antirust paint made addition 10-15% is diluted, spraying is viscous
Degree is adjusted to 30-40S (T-4 glasss), is sprayed using 2.0-2.5 bore spray guns, and ground uses tinplate sheet, after polishing directly
Spraying, while respectively 2 blocks of grounds of spraying do not make the model of any processing, the dry plate thickness control of crop performance detection is micro- in 20-30
Rice detects under room temperature from after doing 48 hours, makees the dry plate thickness control of pattern detection at 50-60 microns, under room temperature
It is detected from after doing 7 days.
Properties test foundation：Dry to be performed according to GB/T1728 standards, hardness is performed according to GB/T1730 standards, attached
To put forth effort to perform according to GB/T1720 standards, impact and performed according to GB/T1732 standards, flexibility is performed according to GB/T1731 standards,
Gloss is performed according to GB/T1743 standards, and water resistance is performed according to GB/T1733 standards, and weatherability is held according to GB/T14522 standards
Row, salt spray resistance are performed according to GB/T1771 standards.
Table 4：The dry plate the performance test results that embodiment 4-9 is realized
Can be seen that paint film by 4 correction data of table, resistance to dripping property is tested completely without exception in the early stage, and water resistance test reaches
Without exception by 720 hours, salt spray resistance can reach 480 hours non-corrodings.Paint film weatherability can greatly promote, and change previous alcohol
The drawbacks of common fault of acid resin coating, weatherability is poor, easy dusting, priming paint weather resistance reach 300h, than normal synthetic enamel mark
Quasi- 200h is also eager to excel.Finishing coat weather resistance can reach 500h, reach the standard of acrylic acid top-coat.Production cost is very low, energy
It is widely used in the fields such as all kinds of large-scale steel structures, water-born paint for car chassis, automobile water compartment, train chassis paint, engineering machinery.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of preparation method of halogenated polyethylene modified water-based alkyd resin, it is characterised in that：Including according to mass fraction meter
Following component：Oleic acid 25-30%, rosin 5-6%, glycerine 5-8%, pentaerythrite 2-4%, neopentyl glycol 1-2%, cis-butenedioic anhydride
0.5-1%, phthalic anhydride 12-14%, halogenated polyethylene 4-6%, alcoholysis catalysts 0.01-0.02%, cosolvent 3-5%, emulsifier
1-2%, greasy dirt emulsifier 0.5-1%, neutralizer 0.5-1.0%, antifoaming agent 0.01-0.03%, antimildew disinfectant 0.1-
0.3%th, deionized water 30-32%；
Preparation method includes the following steps：
Oleic acid, rosin, glycerine, pentaerythrite, neopentyl glycol, cis-butenedioic anhydride, phthalic anhydride, alcoholysis catalysts are put into reaction kettle by step a.
In, firing up flows back to 180 DEG C dimethylbenzene is slowly added into since return duct, keeps the temperature 3h；
Step b. is respectively with 200 DEG C, 230 DEG C, 260 DEG C of each heat preservation 1h；
Step c. is warming up to 260-265 DEG C of heat preservation, detects its viscosity, using form pipe test to 14-16S；
When step d. cools to 120 DEG C, halogenated polyethylene is put into, keeps the temperature 1h；
Temperature is reduced to 80-90 DEG C by step e., and input cosolvent, emulsifier, greasy dirt emulsifier emulsify 30 minutes；
Temperature is reduced to 40-50 DEG C by step f., and input neutralizer, antifoaming agent, antimildew disinfectant and deionized water stir 10-
15 minutes, adjustment pH value was between 8.0-8.5；
Step g. varnish dry plate is realized：Take 100 grams of resin aqueous emulsions, 1 gram of composite drier, after stirring evenly directly spray plate in
It is dry in 25 DEG C of insulating boxs of placement on iron plate, it tests surface drying and does solid work, the test synthesis physical property from after doing 48 hours.
2. the preparation method of halogenated polyethylene modified water-based alkyd resin according to claim 1, it is characterised in that：It is described
Oleic acid includes：All kinds of recycling greases, aliphatic acid, soybean oleic acid, linolenic acid, cocinic acid；Halogenated polyethylene includes：Chlorination rubber
Rubber/polyethylene, highly-chlorinated polyethylene, chlorosulfonated polyethylene, Vinylidene Chloride.
3. the preparation method of halogenated polyethylene modified water-based alkyd resin according to claim 2, it is characterised in that：It is described
Step c the specific steps are 260-265 DEG C of heat preservation is warming up to, its viscosity is detected, using the test of form pipe to 14-16S, wherein sample
Oil：200#=10：8.
4. the preparation method of halogenated polyethylene modified water-based alkyd resin according to claim 2, it is characterised in that：It is described
Step f the specific steps are temperature is reduced to 40-50 DEG C, input neutralizer, antifoaming agent, antimildew disinfectant and deionized water,
Stirring 10-15 minutes, adjustment pH value is between 8.0-8.5.
5. the preparation method of halogenated polyethylene modified water-based alkyd resin according to claim 2, it is characterised in that：It is described
Step g varnish dry plate realize the specific steps are：Take 100 grams of resin aqueous emulsions, 1 gram of OMG company of the U.S. 421 is compound urge it is dry
Agent stirs evenly the rear plate that directly sprays on iron plate, and drying in 25 DEG C of insulating boxs of placement is tested surface drying and done solid work, does 48 hours certainly
Test synthesis physical property afterwards.
6. the method for preparing coating of the halogenated polyethylene modified water-based alkyd resin as described in claim 1-5 is any, special
Sign is that preparation method includes the following steps：
Step a. adds in water based halide PE modified alkide resin emulsion in production cylinder, using deionized water by aqueous dispersion
Agent, aqueous defoamer, anti-flash rusting agent, drier dilution are added in production cylinder, are stirred 5-10 minutes, obtained using 300-400 revs/min
To prefabricated slurry A；
Step b. using 300-400 revs/min be slowly added into when stirring prefabricated slurry A PMA, aqueous anti-settling slurry, rust conversion agent,
Titanium dioxide, coarse whiting, iron oxide black, iron oxide red, pigment scarlet powder, phthalocyanine blue, barium sulfate, aqueous zinc phosphate, using 500-600 turn/
Divide stirring 15-20 minutes, obtain prefabricated slurry B；
Prefabricated slurry B is ground to corresponding fineness by step c. using sand mill, and embodiment 4-6 fineness is controlled at 50 microns, real
7-9 fineness control is applied at 25 microns；
Step d. will be added in after thickener, anti skinning agent dilution in production cylinder using deionized water, is stirred using 400-600 revs/min
It mixes 15-20 minutes, is adjusted pH value to 8.5-9 with neutralizer；
The deionized water of the steel structure aqueous alcohol acid antirust paint made addition 10-15% is diluted by step e., using T-4
Cup adjusts spray viscosity to 30-40S, is sprayed using 2.0-2.5 bore spray guns, and ground uses tinplate sheet, after polishing
Direct spraying, while respectively 2 blocks of grounds of spraying do not make the model of any processing, the dry plate thickness control of crop performance detection is in 20-
It 30 microns, is detected under room temperature from after dry 48 hours, makees the dry plate thickness control of pattern detection at 50-60 microns, room temperature item
It is detected under part from after doing 7 days.
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