CN109852163A - A kind of aqueous rust-proof coatings capable of coating with rust and preparation method thereof - Google Patents
A kind of aqueous rust-proof coatings capable of coating with rust and preparation method thereof Download PDFInfo
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- CN109852163A CN109852163A CN201910000710.7A CN201910000710A CN109852163A CN 109852163 A CN109852163 A CN 109852163A CN 201910000710 A CN201910000710 A CN 201910000710A CN 109852163 A CN109852163 A CN 109852163A
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Abstract
The invention discloses a kind of aqueous rust-proof coatings and preparation method thereof capable of coating with rust, which is made of vinylidene chloride-acrylate copolymer emulsion, talcum powder, sericite, modification of nylon powder, emulsion stabilizer, rust transforming agent, dispersing agent, defoaming agent, auxiliary rheological agents, cosolvent and water.Each component is successively uniformly mixed by preparation method very simple in batches.Aqueous rust-proof coatings of the invention are free of heavy metal and rust resisting pigment, have many advantages, such as good safety and environmental protection, fast drying, adhesive force, rust conversion capability and anti-corrosion ability is excellent, storage stability is good, and application over rust can be carried out, use simplicity, construction cost is cheap, both it can be applied over the steel substrate surface of fine and close rusty scale, can be used for rustless steel structure surface as anticorrosive paint.
Description
Technical field
The present invention relates to a kind of aqueous rust-proof coatings and preparation method thereof capable of coating with rust, belong to anticorrosive paint technology neck
Domain.
Background technique
Currently, the whole world is every year because the economic loss caused by corrosion of steel structure is huge, while corrosion of steel structure also accelerates
The consumption of global iron and steel resource, anticorrosion of steel structure are significant.Paint spraying is one of anticorrosion of steel structure most effective way.It is raw
The steel substrate of rust needs first to thoroughly remove the rust (oxide layer) on steel substrate completely, ability before coating antirusting paint
Good antiseptic property is obtained, the heavy workload of derusting is especially renovated/repaired steel construction and old steel substrate equipment, removes
Working strength height, low efficiency, the operating expenses of rust are high, and the dirt that becomes rusty is very big to the harm of human body.It can if it is possible to develop
With the antirusting paint directly constructed in corrosion substrate surface, derusting operation is reduced, technique is not only can simplify and reduces to apply and dress up
This, but also rust harm of the dirt to human body and the pollution to environment can be reduced.
Much can be existing solvent type with the antirusting paint of application over rust currently, having on the market, also have aqueous.It is existing
Solvent type antirusting paint capable of coating with rust in not only containing a large amount of volatile inflammable organic solvents, but also contain a huge sum of money
Belong to, toxicity is big, and environmental pollution is serious.Though and existing aqueous antirusting paint capable of coating with rust can satisfy environmental law substantially
The requirement of rule, quickly grows in recent years, but quality is very different, and performance cannot ensure.
CN 104017458A, CN 108250901A, CN 104449199A, CN 107880664A and US 2502441 are public
What is opened is aqueous rust-proof coatings capable of coating with rust, they have the following deficiencies: mostly than the environmental protection of solvent type antirusting paint
1) still contain more poisonous and harmful substance, VOC content is high；2) epoxy resin or acrylic resin and antirust face are used
Material, coating higher cost；3) poor adhesive force of propenoic acid paint, it is weak that film obstructs anti-corrosion ability；4) molecule of matrix resin
Amount is high, coating poor permeability, and rust conversion capability and antiseptic property are not able to satisfy the market demand still.
Summary of the invention
The purpose of the present invention is to provide a kind of aqueous rust-proof coatings and preparation method thereof capable of coating with rust.
The technical solution used in the present invention is:
A kind of aqueous rust-proof coatings capable of coating with rust, consist of the following mass percentage components:
Vinylidene chloride-acrylate copolymer emulsion: 45%~70%；
Talcum powder: 6%~18%；
Sericite: 4%~8%；
Modification of nylon powder: 1%~4%；
Emulsion stabilizer: 0.5%~2%；
Become rusty transforming agent: 1%~8%；
Dispersing agent: 0.5%~2%；
Defoaming agent: 0.2%~0.6%；
Auxiliary rheological agents: 0.2%~1.5%；
Cosolvent: 2%~7%；
Water: surplus.
Preferably, the solid content of the vinylidene chloride-acrylate copolymer emulsion be 58wt%~63wt%, pH value be 1~
3。
Preferably, the modification of nylon powder is the nylon powder of hydrochloric Acid Modification.
Preferably, the partial size of the modification of nylon powder is 10~40 μm.
Preferably, the emulsion stabilizer is sulfosuccinate.
It is further preferred that the emulsion stabilizer be Dow Chemical GR-5M, GR-7M, GR-PG70 in extremely
Few one kind.
Preferably, the rust transforming agent is tannin aqueous acid.
Preferably, the dispersing agent be BYK-190, BYK-191, BYK-192, Tego-760w, Tego-755w in extremely
Few one kind.
Preferably, the defoaming agent is BYK-011, BYK-019, BYK-022, Tego-810, Tego-825, Tego-
At least one of 902w.
Preferably, the auxiliary rheological agents are organic modified bentonite hydrogel.
Preferably, the cosolvent is by cosolvent I and cosolvent II according to mass ratio (1~4): (1~3) compounds,
Cosolvent I is dipropylene, diacetone alcohol, ethylene glycol monomethyl ether, glycol propyl ether, diethylene glycol propyl ether, propylene glycol positive third
At least one of ether, cosolvent II are at least one of ethyl alcohol, normal propyl alcohol, isopropanol, butanol.
The preparation method of above-mentioned aqueous rust-proof coatings capable of coating with rust, comprising the following steps:
1) dispersion tank is added water to, then auxiliary rheological agents, a part of defoaming agent, emulsion stabilizer, dispersion are added while stirring
Agent and cosolvent are uniformly mixed；
2) by talcum powder, sericite and modification of nylon powder be added dispersion tank, be dispersed with stirring to system fineness reach 25 μm with
Under；
3) dispersion tank is added in vinylidene chloride-acrylate copolymer emulsion, be uniformly mixed, add rust transforming agent and remaining
Defoaming agent is uniformly mixed, and filtering obtains aqueous rust-proof coatings capable of coating with rust.
Preferably, the preparation method of above-mentioned aqueous rust-proof coatings capable of coating with rust, comprising the following steps:
1) add water to dispersion tank, start dispersion machine, adjust the revolving speed of dispersion machine to 300~800rpm, while stirring plus
Enter auxiliary rheological agents, a part of defoaming agent, emulsion stabilizer, dispersing agent and cosolvent, is uniformly mixed；
2) dispersion tank is added in talcum powder, sericite and modification of nylon powder, adjust the revolving speed of dispersion machine to 1000~
1500rpm is dispersed with stirring to system fineness and reaches 25 μm or less；
3) dispersion tank is added in vinylidene chloride-acrylate copolymer emulsion, be uniformly mixed, add rust transforming agent and remaining
Defoaming agent is uniformly mixed, and filtering obtains aqueous rust-proof coatings capable of coating with rust.
Preferably, the solid content of the step 3) aqueous rust-proof coatings capable of coating with rust is 52wt%~58wt%, pH
Value is that 2~6,25 DEG C of viscosity is 900~4000mPas.
The beneficial effects of the present invention are: aqueous rust-proof coatings of the invention are free of heavy metal and rust resisting pigment, there is safety
Environmental protection, fast drying, adhesive force is good, become rusty the advantages that conversion capability and anti-corrosion ability are excellent, storage stability is good, and can carry out band
Rust coating, using simplicity, construction cost is cheap, can both be applied over the steel substrate surface of fine and close rusty scale, can be used for
Rustless steel structure surface is as anticorrosive paint.
1) aqueous rust-proof coatings of the invention are using vinylidene chloride-acrylate copolymer emulsion as main film forming substance, film
The oxygen barrier effect that blocks water it is excellent, and its polarity is stronger, and the adhesive force of the film of formation is big, be coated on steel structure surface have it is preferable
Corrosion resistance；
2) it is added with laminar structured talcum powder and sericite in aqueous rust-proof coatings of the invention, can further mention
The physical barrier of high film acts on；
3) modification of nylon powder is added in aqueous rust-proof coatings of the invention, modification of nylon powder has excellent acidproof, resistance to
Alkali, water resistance, modification of nylon powder, talcum powder and sericite three be combined with each other, and can make the water-fast, corrosion-resistant, resistance to of film
Chemicals can greatly improve that (simple vinylidene chloride-acrylate copolymer emulsion is formed by film may only resistance to neutral salt spray
300h, and the film that aqueous rust-proof coatings of the invention are formed can be with the 600h of resistance to neutral salt spray)；
4) aqueous rust-proof coatings of the invention be directly watered dilution can coating, can brush, roller coating or spraying, it is only necessary to remove
The floating rust for removing substrate surface, exempts to polish, and coating decoration is easy, and coating rate of drying is fast, greatly shortens the duration, especially suitable for
The renovation of civil buildings, industrial plants, chemical plant storage tank, various different formed steel constructions etc., can both be applied over fine and close rusty scale
Steel substrate surface can be used for rustless steel structure surface as anticorrosive paint；
5) the rust conversion agent content in aqueous rust-proof coatings of the invention can flexibly be adjusted according to fine and close rusty scale thickness
Section, again without excess acid rust transforming agent residual while guaranteeing that rusty scale sufficiently converts, to further improve the resistance to of film
Aqueous and corrosion resistance；
6) aqueous rust-proof coatings of the invention can targetedly be applied to the steel knot of fine and close 1~100 μm of thickness of rusty scale
Structure, the steel structure surface that also can be applied to completely remove oxide layer is as anti-corrosion primer.
Specific embodiment
The present invention will be further explained combined with specific embodiments below and explanation.
Embodiment 1:
A kind of aqueous rust-proof coatings capable of coating with rust, raw material composition are as shown in the table:
A kind of raw material of aqueous rust-proof coatings capable of coating with rust of table 1 forms table
Performance test:
After having taken slight corrosion steel plate to remove floating rust and dust, the rusty scale of substrate is measured with a thickness of 0~10 μm, by embodiment
1 aqueous rust-proof coatings capable of coating with rust are sprayed on the substrate, in indoor maintenance 3 days, are tested for the property, performance test
As a result as shown in the table:
The performance test results of the aqueous rust-proof coatings capable of coating with rust of 2 embodiment 1 of table
Embodiment 2:
A kind of aqueous rust-proof coatings capable of coating with rust, raw material composition are as shown in the table:
A kind of raw material of aqueous rust-proof coatings capable of coating with rust of table 3 forms table
Performance test:
After taking the serious steel plate of corrosion to remove floating rust and dust, the rusty scale of substrate is measured with a thickness of 90~100 μm, will be implemented
The aqueous rust-proof coatings capable of coating with rust of example 2 are sprayed on the substrate, in indoor maintenance 3 days, are tested for the property, and performance is surveyed
Test result is as shown in the table:
The performance test results of the aqueous rust-proof coatings capable of coating with rust of 4 embodiment 2 of table
Embodiment 3:
A kind of aqueous rust-proof coatings capable of coating with rust, raw material composition are as shown in the table:
A kind of raw material of aqueous rust-proof coatings capable of coating with rust of table 5 forms table
Performance test:
After taking corrosion steel plate to remove floating rust and dust, measure the rusty scale of substrate with a thickness of 60~70 μm, by embodiment 3 can
The aqueous rust-proof coatings of application over rust are sprayed on the substrate, in indoor maintenance 3 days, are tested for the property, the performance test results
It is as shown in the table:
The performance test results of the aqueous rust-proof coatings capable of coating with rust of 6 embodiment 3 of table
Embodiment 4:
A kind of aqueous rust-proof coatings capable of coating with rust, raw material composition are as shown in the table:
A kind of raw material of aqueous rust-proof coatings capable of coating with rust of table 7 forms table
Performance test:
After taking the serious steel plate of corrosion to remove floating rust and dust, the rusty scale of substrate is measured with a thickness of 90~100 μm, will be implemented
The aqueous rust-proof coatings capable of coating with rust of example 4 are sprayed on the substrate, in indoor maintenance 3 days, are tested for the property, and performance is surveyed
Test result is as shown in the table:
The performance test results of the aqueous rust-proof coatings capable of coating with rust of 8 embodiment 4 of table
Comparative example 1:
The steady change type aqueous rusty priming paint of the RUST-X of Jiangsu Jinling Special Paint Co., Ltd..
After taking corrosion steel plate to remove floating rust and dust, the rusty scale of substrate is measured with a thickness of 40~50 μm, by above-mentioned RUST-X
Steadyization type aqueous rusty basecoat paint, in indoor maintenance 3 days, is tested for the property, the performance test results are as follows on the substrate
Shown in table:
The performance test results of the steady change type aqueous rusty priming paint of 9 RUST-X of table
Comparative example 2:
The H-809 of Nantong Repair-air Chemistry Bioengineering Co., Ltd. turns rust priming paint.
After taking corrosion steel plate to remove floating rust and dust, the rusty scale of substrate is measured with a thickness of 40~50 μm, above-mentioned H-809 is turned
Basecoat paint become rusty on the substrate, in indoor maintenance 3 days, is tested for the property, the performance test results are as shown in the table:
10 H-809 of table turns the performance test results of rust priming paint
From Examples 1 to 4 and comparative example 1~2: the VOC of aqueous rust-proof coatings capable of coating with rust of the invention contains
It measures low, is free of heavy metal, stable storing not only can be applied to almost rustless steel construction substrate surface, but also can be applied to cause
Close rusty scale thickness is up to 100 μm of steel construction substrate surface, and also with rate of drying is fast, film adhesive is good, corrosion resistance
Can be excellent the features such as；Aqueous rust-proof coatings capable of coating with rust of the invention not only adhesive force, impact resistance, water resistance, it is resistance in
Property salt fog etc. performance to be significantly better than RUST-X surely change type aqueous rusty priming paint and H-809 turn rust priming paint, and more
Environmentally friendly (VOC content is lower).
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of aqueous rust-proof coatings capable of coating with rust, it is characterised in that: consist of the following mass percentage components:
Vinylidene chloride-acrylate copolymer emulsion: 45%~70%；
Talcum powder: 6%~18%；
Sericite: 4%~8%；
Modification of nylon powder: 1%~4%；
Emulsion stabilizer: 0.5%~2%；
Become rusty transforming agent: 1%~8%；
Dispersing agent: 0.5%~2%；
Defoaming agent: 0.2%~0.6%；
Auxiliary rheological agents: 0.2%~1.5%；
Cosolvent: 2%~7%；
Water: surplus.
2. aqueous rust-proof coatings capable of coating with rust according to claim 1, it is characterised in that: the vinylidene chloride-the third
The solid content of olefin(e) acid copolymer emulsion is 58wt%~63wt%, pH value is 1~3.
3. aqueous rust-proof coatings capable of coating with rust according to claim 1, it is characterised in that: the modification of nylon powder is
The nylon powder of hydrochloric Acid Modification.
4. aqueous rust-proof coatings capable of coating with rust according to any one of claims 1 to 3, it is characterised in that: institute
The partial size for stating modification of nylon powder is 10~40 μm.
5. aqueous rust-proof coatings capable of coating with rust according to any one of claims 1 to 3, it is characterised in that: institute
Stating emulsion stabilizer is sulfosuccinate.
6. aqueous rust-proof coatings capable of coating with rust according to any one of claims 1 to 3, it is characterised in that: institute
Stating rust transforming agent is tannin aqueous acid.
7. aqueous rust-proof coatings capable of coating with rust according to any one of claims 1 to 3, it is characterised in that: institute
Stating dispersing agent is at least one of BYK-190, BYK-191, BYK-192, Tego-760w, Tego-755w；The defoaming agent
For at least one of BYK-011, BYK-019, BYK-022, Tego-810, Tego-825, Tego-902w.
8. aqueous rust-proof coatings capable of coating with rust according to any one of claims 1 to 3, it is characterised in that: institute
Stating auxiliary rheological agents is organic modified bentonite hydrogel.
9. aqueous rust-proof coatings capable of coating with rust according to any one of claims 1 to 3, it is characterised in that: institute
Cosolvent is stated by cosolvent I and cosolvent II according to mass ratio (1~4): (1~3) compounds, and cosolvent I is dipropylene glycol
At least one of butyl ether, diacetone alcohol, ethylene glycol monomethyl ether, glycol propyl ether, diethylene glycol propyl ether, Propylene glycol n-propyl ether, are helped
Solvent II is at least one of ethyl alcohol, normal propyl alcohol, isopropanol, butanol.
10. the preparation method of aqueous rust-proof coatings capable of coating with rust, feature described in any one of claim 1~9
It is: the following steps are included:
1) add water to dispersion tank, then while stirring be added auxiliary rheological agents, a part of defoaming agent, emulsion stabilizer, dispersing agent and
Cosolvent is uniformly mixed；
2) dispersion tank is added in talcum powder, sericite and modification of nylon powder, is dispersed with stirring to system fineness and reaches 25 μm or less；
3) dispersion tank is added in vinylidene chloride-acrylate copolymer emulsion, be uniformly mixed, add rust transforming agent and remaining defoaming
Agent is uniformly mixed, and filtering obtains aqueous rust-proof coatings capable of coating with rust.
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Cited By (5)
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| CN110229573A (en) * | 2019-06-14 | 2019-09-13 | 深圳安盾海洋新材料有限公司 | A kind of aqueous rusty anti-corrosive primer and preparation method thereof |
| CN111423792A (en) * | 2020-05-28 | 2020-07-17 | 涂创时代(苏州)科技开发有限公司 | Anticorrosion heat-insulation nano water-based integrated coating, coating and application |
| CN111662603A (en) * | 2020-05-09 | 2020-09-15 | 洛阳双瑞防腐工程技术有限公司 | Water-based rust conversion anticorrosive paint for steel structure and preparation method thereof |
| CN112795260A (en) * | 2021-01-18 | 2021-05-14 | 成都华兴邦得建筑装饰材料有限公司 | Water-based rust conversion shielding coating and preparation method thereof |
| CN113652129A (en) * | 2021-09-02 | 2021-11-16 | 深圳市广田环保涂料有限公司 | Rust-removal-free heat-insulation waterproof coating for metal roof and preparation method thereof |
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| CN110229573A (en) * | 2019-06-14 | 2019-09-13 | 深圳安盾海洋新材料有限公司 | A kind of aqueous rusty anti-corrosive primer and preparation method thereof |
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| CN112795260A (en) * | 2021-01-18 | 2021-05-14 | 成都华兴邦得建筑装饰材料有限公司 | Water-based rust conversion shielding coating and preparation method thereof |
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| CN113652129A (en) * | 2021-09-02 | 2021-11-16 | 深圳市广田环保涂料有限公司 | Rust-removal-free heat-insulation waterproof coating for metal roof and preparation method thereof |
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