CN108342141A - A kind of styrene-acrylic emulsion aqueous rust-proof coatings and preparation method thereof - Google Patents
A kind of styrene-acrylic emulsion aqueous rust-proof coatings and preparation method thereof Download PDFInfo
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- CN108342141A CN108342141A CN201810088007.1A CN201810088007A CN108342141A CN 108342141 A CN108342141 A CN 108342141A CN 201810088007 A CN201810088007 A CN 201810088007A CN 108342141 A CN108342141 A CN 108342141A
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- 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
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- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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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
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Abstract
The invention discloses a kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：100 parts of nano zinc oxide modified styrene-acrylic emulsion, 20 30 parts of micaceous iron oxide, 12 19 parts of aluminium triphosphate, 59 parts of film forming agent, 35 parts of dispersant, 48 parts of levelling agent, 11 16 parts of filler, 69 parts of thickener, 30 40 parts of water.The present invention also provides the preparation methods of the styrene-acrylic emulsion aqueous rust-proof coatings.There is the aqueous rust-proof coatings of the application good compactness, high rust resistance to have good film forming and higher adhesive force, can carry out good corrosion protection to metal.
Description
Technical field
The present invention relates to paint field, especially a kind of styrene-acrylic emulsion aqueous rust-proof coatings and preparation method thereof.
Background technology
According to ASSOCIATE STATISTICS, the whole world every year the economic loss caused by metal erosion be approximately earthquake, floods, typhoon etc. from
6 times of economic loss summation, are great economic wastes caused by right disaster.Metal erosion can not only bring to people huge
Economic loss, it is also a hidden danger that can also cause many accidents and personal injury, the personal safety to people indirectly.Therefore,
The antirust research of metal is more and more paid attention to, and people have used multiple technologies and metal is protected, and prevent
The generation of metal erosion phenomenon.Wherein metal rust preventing it is most effective ' one of most common method be metal surface coat anticorrosion
Coating, to completely cut off contact of the corrosive medium with metallic matrix.
Aqueous rust-proof coatings can not only compare favourably in terms of anticorrosion ability with traditional coating, be even more big in terms of environmental protection
It is better than traditional coating greatly, there is the larger market demand, good economic benefit can be brought.Water paint is with its unique ring
Border friendly and safety in utilization become the research hotspot of coating industry.Water paint is because it, using water as decentralized medium, makes it
Other than having the characteristics that general coating, also there are the hot spots such as nontoxic, tasteless, nonflammable, due to it meets environmental requirement
It is welcome by more and more users.
Include at present mainly waterborne epoxy coatings, water-borne acrylic coatings, water using relatively broad water-based anticorrosive paint
Property polyurethane coating and aqueous inorganic zinc-enriched coating.Wherein water-borne acrylic coatings mainly divide according to the difference of its membrane formation mechanism
For two major classes, one kind is thermoplastic resin, and another kind of is the thermosetting property system resin of hydroxyl.Acrylate copolymer protects light and protects color
Performance and ageing-resistant performance are preferable, and the styrene-acrylic emulsion that styrene obtains, which is added, in synthesis can make cost reduction, therefore be
A kind of good aqueous rust-proof coatings form a film system, but styrene-acrylic emulsion film compactness is poor, to vapor and oxygen
Shielding is bad, therefore needs to be improved this aspect problem in the synthesis process.
Chinese patent CN201410579603.1 discloses a kind of aqueous rust-proof coatings synthetic method, includes the following steps：
Compound emulsifying agent, deionized water, pH buffer are added into four-hole bottle, after stirring evenly, mix monomer is added as stratum nucleare
Monomer；Nitrogen, the initiator being added at one time are led in stirring, and temperature rise waits for that system temperature is fallen after rise, obtains core polymerized emulsion；In core
On the basis of polymerized emulsion, starts that uniformly mixed residual monomer, initiator, emulsifier is added dropwise, drip off, continue to keep the temperature, obtain core
Shell styrene-acrylic emulsion；PH value, filtering, discharging are adjusted with ammonium hydroxide；Deionized water is added in high speed dispersor, by dispersant, wetting
Agent, antifoaming agent, color stuffing, corrosion inhibiter are uniformly mixed obtained mill base；Under stirring at low speed by mill base, styrene-acrylic emulsion, coalescents,
Antifoaming agent, thickener and pH adjusting agent are mixed evenly, and filtering and discharging obtains aqueous rust-proof coatings.The method of the present invention is simple,
Easy to control, the aqueous rust-proof coatings compactness of synthesis is preferable.
Invention content
The present invention relates to a kind of styrene-acrylic emulsion aqueous rust-proof coatings, which has good compactness, prevents
Rust is had excellent performance, and has good film forming and higher adhesive force, can carry out good corrosion protection to metal.
It is a further object to provide the preparation methods of the styrene-acrylic emulsion aqueous rust-proof coatings.
To achieve the above object, the present invention uses following technical scheme：
A kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 20-30 parts of micaceous iron oxide, 12-19 parts of aluminium triphosphate, film forming
5-9 parts of agent, 3-5 parts of dispersant, 4-8 parts of levelling agent, 11-16 parts of filler, 6-9 parts of thickener, 30-40 parts of water
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 20-30min, later
Polyacrylamide solution is added thereto, 2-3h is stirred with 6000-8000rpm speed, is dried later, modified Nano oxygen is made
Change zinc powder；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate
It is scattered in the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continue to stir 1-2h, system
Obtain pre-emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 80-90 DEG C, the 1/3 of initiator is added thereto, is added dropwise to complete
Flow back insulation reaction 1-2h afterwards, and remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction that flows back after being added dropwise to complete
1-2h cools the temperature to 40 DEG C later, and adjusting pH is 8-9, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
Preferably, the film forming agent is 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates.
Preferably, the dispersant is vinyl bis-stearamides.
Preferably, the levelling agent is isophorone.
Preferably, the filler is the mixture of diatomite and clay.
Preferably, the thickener is the mixture of carboxymethyl cellulose and hydroxypropyl methyl cellulose.
Preferably, each component content of pre-emulsion is in the preparation method of the nano zinc oxide modified styrene-acrylic emulsion：
10-15 parts of styrene, 25-32 parts of butyl acrylate, 8-13 parts of methyl methacrylate, hydroxymethyl acrylamide 2-
6 parts, 3-7 parts of ethylhexylacrylate, 3-5 parts of modified nano zinc oxide powder, 20-30 parts of water.
Preferably, emulsifier is cetyl phenol polyoxy second in the preparation method of the nano zinc oxide modified styrene-acrylic emulsion
Alkene ether, initiator are sodium peroxydisulfate.
A kind of preparation method of styrene-acrylic emulsion aqueous rust-proof coatings, includes the following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to
40-50 DEG C, ultrasonic disperse 60-90min is carried out, film forming agent, dispersant, levelling agent, thickener, with 300-500rpm are added later
Speed is stirred 2-4h, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
The invention has the advantages that：
The application is with styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, acrylic acid ethyl oneself
Base ester is styrene-acrylic resin prepared by monomer polymerization, and is modified to it using modified nano zinc oxide powder so that preparation
Styrene-acrylic emulsion has good compactness and rustless property, and film forming is preferable, and adhesive force is excellent.Utilize nano zine oxide
Modifying cinepazid emulsion, micaceous iron oxide and aluminium triphosphate mutual cooperation can assign coating excellent rustless property, utilize
The antirusting paint of the application, which is coated in metal surface, to provide corrosion protection to metal material in a longer period of time, be not easy to take off
It falls, service life is longer.
Specific implementation mode
In order to better understand the present invention, below by embodiment, the present invention is further described, and embodiment is served only for solving
The present invention is released, any restriction will not be constituted to the present invention.
Embodiment 1
A kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 20 parts of micaceous iron oxide, 12 parts of aluminium triphosphate, 5 parts of film forming agent,
3 parts of dispersant, 4 parts of levelling agent, 11 parts of filler, 6 parts of thickener, 30 parts of water；
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 20min, it is backward
Polyacrylamide solution is wherein added, 2h is stirred with 6000rpm speed, is dried later, modified nano zinc oxide powder is made；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate
It is scattered in the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continue to stir 1h, be made
Pre-emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 80 DEG C, the 1/3 of initiator, after being added dropwise to complete is added thereto
Flow back insulation reaction 1h, and remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction 1h that flows back after being added dropwise to complete, it
After cool the temperature to 40 DEG C, it is 8 to adjust pH, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
The preparation method of the styrene-acrylic emulsion aqueous rust-proof coatings, includes the following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to
40 DEG C, ultrasonic disperse 60min is carried out, is added film forming agent later, dispersant, levelling agent, thickener stirred with 300rpm speed
2h is mixed, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
Film forming agent is 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates；Dispersant is vinyl bis-stearamides；Stream
Flat agent is isophorone；Filler is the mixture of diatomite and clay；Thickener is that carboxymethyl cellulose and hydroxypropyl methyl are fine
Tie up the mixture of element.
The each component content of pre-emulsion is in the preparation method of nano zinc oxide modified styrene-acrylic emulsion：10 parts of styrene,
25 parts of butyl acrylate, 8 parts of methyl methacrylate, 2 parts of hydroxymethyl acrylamide, 3 parts of ethylhexylacrylate, modification are received
3 parts of Zinc oxide powder of rice, 20 parts of water.
Emulsifier is cetyl phenol polyethenoxy ether, initiator in the preparation method of nano zinc oxide modified styrene-acrylic emulsion
For sodium peroxydisulfate.
Embodiment 2
A kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 30 parts of micaceous iron oxide, 19 parts of aluminium triphosphate, 9 parts of film forming agent,
5 parts of dispersant, 8 parts of levelling agent, 16 parts of filler, 9 parts of thickener, 40 parts of water；
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 30min, it is backward
Polyacrylamide solution is wherein added, 3h is stirred with 8000rpm speed, is dried later, modified nano zinc oxide powder is made；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate
It is scattered in the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continue to stir 2h, be made
Pre-emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 90 DEG C, the 1/3 of initiator, after being added dropwise to complete is added thereto
Flow back insulation reaction 2h, and remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction 2h that flows back after being added dropwise to complete, it
After cool the temperature to 40 DEG C, it is 9 to adjust pH, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
The preparation method of the styrene-acrylic emulsion aqueous rust-proof coatings, includes the following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to
50 DEG C, ultrasonic disperse 90min is carried out, is added film forming agent later, dispersant, levelling agent, thickener stirred with 500rpm speed
4h is mixed, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
Film forming agent is 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates；Dispersant is vinyl bis-stearamides；Stream
Flat agent is isophorone；Filler is the mixture of diatomite and clay；Thickener is that carboxymethyl cellulose and hydroxypropyl methyl are fine
Tie up the mixture of element.
The each component content of pre-emulsion is in the preparation method of nano zinc oxide modified styrene-acrylic emulsion：15 parts of styrene,
32 parts of butyl acrylate, 13 parts of methyl methacrylate, 6 parts of hydroxymethyl acrylamide, 7 parts of ethylhexylacrylate are modified
5 parts of nano-zinc oxide powder, 30 parts of water.
Emulsifier is cetyl phenol polyethenoxy ether, initiator in the preparation method of nano zinc oxide modified styrene-acrylic emulsion
For sodium peroxydisulfate.
Embodiment 3
A kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 20 parts of micaceous iron oxide, 19 parts of aluminium triphosphate, 5 parts of film forming agent,
5 parts of dispersant, 4 parts of levelling agent, 16 parts of filler, 6 parts of thickener, 40 parts of water；
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 20min, it is backward
Polyacrylamide solution is wherein added, 2h is stirred with 8000rpm speed, is dried later, modified nano zinc oxide powder is made；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate
It is scattered in the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continue to stir 2h, be made
Pre-emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 80 DEG C, the 1/3 of initiator, after being added dropwise to complete is added thereto
Flow back insulation reaction 2h, and remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction 1h that flows back after being added dropwise to complete, it
After cool the temperature to 40 DEG C, it is 9 to adjust pH, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
The preparation method of the styrene-acrylic emulsion aqueous rust-proof coatings, includes the following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to
40 DEG C, ultrasonic disperse 90min is carried out, is added film forming agent later, dispersant, levelling agent, thickener stirred with 300rpm speed
4h is mixed, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
Film forming agent is 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates；Dispersant is vinyl bis-stearamides；Stream
Flat agent is isophorone；Filler is the mixture of diatomite and clay；Thickener is that carboxymethyl cellulose and hydroxypropyl methyl are fine
Tie up the mixture of element.
The each component content of pre-emulsion is in the preparation method of nano zinc oxide modified styrene-acrylic emulsion：10 parts of styrene,
32 parts of butyl acrylate, 8 parts of methyl methacrylate, 6 parts of hydroxymethyl acrylamide, 3 parts of ethylhexylacrylate, modification are received
5 parts of Zinc oxide powder of rice, 20 parts of water.
Emulsifier is cetyl phenol polyethenoxy ether, initiator in the preparation method of nano zinc oxide modified styrene-acrylic emulsion
For sodium peroxydisulfate.
Embodiment 4
A kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 30 parts of micaceous iron oxide, 12 parts of aluminium triphosphate, 9 parts of film forming agent,
3 parts of dispersant, 8 parts of levelling agent, 11 parts of filler, 9 parts of thickener, 30 parts of water；
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 30min, it is backward
Polyacrylamide solution is wherein added, 3h is stirred with 6000rpm speed, is dried later, modified nano zinc oxide powder is made；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate
It is scattered in the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continue to stir 1h, be made
Pre-emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 90 DEG C, the 1/3 of initiator, after being added dropwise to complete is added thereto
Flow back insulation reaction 1h, and remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction 2h that flows back after being added dropwise to complete, it
After cool the temperature to 40 DEG C, it is 8 to adjust pH, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
The preparation method of the styrene-acrylic emulsion aqueous rust-proof coatings, includes the following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to
50 DEG C, ultrasonic disperse 60min is carried out, is added film forming agent later, dispersant, levelling agent, thickener stirred with 500rpm speed
2h is mixed, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
Film forming agent is 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates；Dispersant is vinyl bis-stearamides；Stream
Flat agent is isophorone；Filler is the mixture of diatomite and clay；Thickener is that carboxymethyl cellulose and hydroxypropyl methyl are fine
Tie up the mixture of element.
The each component content of pre-emulsion is in the preparation method of nano zinc oxide modified styrene-acrylic emulsion：15 parts of styrene,
25 parts of butyl acrylate, 13 parts of methyl methacrylate, 6 parts of hydroxymethyl acrylamide, 3 parts of ethylhexylacrylate are modified
5 parts of nano-zinc oxide powder, 20 parts of water.
Emulsifier is cetyl phenol polyethenoxy ether, initiator in the preparation method of nano zinc oxide modified styrene-acrylic emulsion
For sodium peroxydisulfate.
Embodiment 5
A kind of styrene-acrylic emulsion aqueous rust-proof coatings, in parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 26 parts of micaceous iron oxide, 15 parts of aluminium triphosphate, 7 parts of film forming agent,
4 parts of dispersant, 6 parts of levelling agent, 13 parts of filler, 8 parts of thickener, 35 parts of water；
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 25min, it is backward
Polyacrylamide solution is wherein added, 3h is stirred with 7000rpm speed, is dried later, modified nano zinc oxide powder is made；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate
It is scattered in the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continue to stir 1h, be made
Pre-emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 80 DEG C, the 1/3 of initiator, after being added dropwise to complete is added thereto
Flow back insulation reaction 2h, and remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction 2h that flows back after being added dropwise to complete, it
After cool the temperature to 40 DEG C, it is 8 to adjust pH, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
The preparation method of the styrene-acrylic emulsion aqueous rust-proof coatings, includes the following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to
45 DEG C, ultrasonic disperse 70min is carried out, is added film forming agent later, dispersant, levelling agent, thickener stirred with 400rpm speed
3h is mixed, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
Film forming agent is 2,2,4- trimethyl -1,3- pentanediol mono isobutyrates；Dispersant is vinyl bis-stearamides；Stream
Flat agent is isophorone；Filler is the mixture of diatomite and clay；Thickener is that carboxymethyl cellulose and hydroxypropyl methyl are fine
Tie up the mixture of element.
The each component content of pre-emulsion is in the preparation method of nano zinc oxide modified styrene-acrylic emulsion：12 parts of styrene,
29 parts of butyl acrylate, 10 parts of methyl methacrylate, 4 parts of hydroxymethyl acrylamide, 5 parts of ethylhexylacrylate are modified
4 parts of nano-zinc oxide powder, 26 parts of water.
Emulsifier is cetyl phenol polyethenoxy ether, initiator in the preparation method of nano zinc oxide modified styrene-acrylic emulsion
For sodium peroxydisulfate.
Mixture obtained by above-described embodiment is brushed on tinplate, 12h is stood under room temperature, is carried out after being completely dried
Performance test, wherein comparative example are commercially available aqueous rust-proof coatings, and test result is as shown in table 1.Adhesive force tests reference standard
GB/T1720-79；Resistance to salt water reference standard GB/T10834-1989 is tested.
Table 1
Claims (9)
1. a kind of styrene-acrylic emulsion aqueous rust-proof coatings, it is characterised in that：In parts by weight, including following components：
100 parts of nano zinc oxide modified styrene-acrylic emulsion, 20-30 parts of micaceous iron oxide, 12-19 parts of aluminium triphosphate, film forming agent 5-9
Part, 3-5 parts of dispersant, 4-8 parts of levelling agent, 11-16 parts of filler, 6-9 parts of thickener, 30-40 parts of water；
The preparation method of the nano zinc oxide modified styrene-acrylic emulsion is：
(1) nano-zinc oxide powder is scattered in the aqueous solution of titanate coupling agent, ultrasonic disperse 20-30min, it is backward its
Middle addition polyacrylamide solution stirs 2-3h with 6000-8000rpm speed, dries later, modified nano zinc oxide is made
Powder；
(2) by styrene, butyl acrylate, methyl methacrylate, hydroxymethyl acrylamide, ethylhexylacrylate dispersion
In the aqueous solution of emulsifier, after being uniformly mixed, modified nano zinc oxide powder is added, continues to stir 1-2h, is made pre-
Emulsion；
(3) the 1/3 of pre-emulsion obtained is taken, is warming up to 80-90 DEG C, the 1/3 of initiator is added thereto, is returned after being added dropwise to complete
Insulation reaction 1-2h is flowed, remaining pre-emulsion and initiator are added dropwise later, continues the insulation reaction 1-2h that flows back after being added dropwise to complete,
40 DEG C are cooled the temperature to later, and adjusting pH is 8-9, and nano zinc oxide modified styrene-acrylic emulsion is made in sieving.
2. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The film forming agent is 2,2,4- tri-
Methyl-1,3- pentanediol mono isobutyrates.
3. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The dispersant is that vinyl is double
Stearmide.
4. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The levelling agent is different Fo Er
Ketone.
5. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The filler is diatomite and glues
The mixture of soil.
6. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The thickener is that carboxymethyl is fine
The mixture of dimension element and hydroxypropyl methyl cellulose.
7. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The nano zinc oxide modified benzene
The each component content of pre-emulsion is in the preparation method of acrylic emulsion：
10-15 parts of styrene, 25-32 parts of butyl acrylate, 8-13 parts of methyl methacrylate, 2-6 parts of hydroxymethyl acrylamide,
3-7 parts of ethylhexylacrylate, 3-5 parts of modified nano zinc oxide powder, 20-30 parts of water.
8. styrene-acrylic emulsion aqueous rust-proof coatings according to claim 1, it is characterised in that：The nano zinc oxide modified benzene
Emulsifier is cetyl phenol polyethenoxy ether in the preparation method of acrylic emulsion, and initiator is sodium peroxydisulfate.
9. according to the preparation method of claim 1-8 any one of them styrene-acrylic emulsion aqueous rust-proof coatings, it is characterised in that：Packet
Include following steps：
By nano zinc oxide modified styrene-acrylic emulsion, micaceous iron oxide, aluminium triphosphate after filler and water mixing, is heated to 40-50
DEG C, ultrasonic disperse 60-90min is carried out, film forming agent, dispersant, levelling agent, thickener, with 300-500rpm speed are added later
It is stirred 2-4h, vacuumizes bubble removing later to get the styrene-acrylic emulsion aqueous rust-proof coatings.
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