CN106118149B - A kind of aqueous inorganic zinc-enriched coating and preparation method thereof - Google Patents
A kind of aqueous inorganic zinc-enriched coating and preparation method thereof Download PDFInfo
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- CN106118149B CN106118149B CN201610496517.3A CN201610496517A CN106118149B CN 106118149 B CN106118149 B CN 106118149B CN 201610496517 A CN201610496517 A CN 201610496517A CN 106118149 B CN106118149 B CN 106118149B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
- C09D1/04—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates with organic additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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Abstract
The invention discloses a kind of aqueous inorganic zinc-enriched coatings and preparation method thereof.The aqueous inorganic zinc-enriched coating includes first component and second component, and the weight ratio of first component and second component is 3:7；First component includes 80 parts by weight of aqueous silicate solution, 4 parts by weight of silane coupling agent, 15 parts by weight of silicone acrylic emulsion, and the wherein described anti-settling agent of 1 parts by weight of anti-settling agent is made of the attapulgite and silver-colored zinc titanium dioxide of zinc doping；Second component is made of zinc powder.Each ingredient in first component is first weighed when preparing the coating successively, is separately packed with component B after high-speed stirred uniform filtering and both obtains product.The coating is formed by that compact in paint film is good, and flexibility and impact resistance are good, are packed using two-component, extends storage stability, and reduce constructional difficulties, the method for preparing the coating is simply controllable, and low energy consumption, is easy to industrialized production.
Description
Technical field
The invention belongs to paint fields, and in particular to a kind of aqueous inorganic zinc-enriched coating and preparation method thereof.
Background technology
Aqueous inorganic zinc-enriched coating is developed rapidly and is applied in each developed country with its excellent antiseptic property.
The country is started in the aqueous inorganic in the 1980s, Tianjin chemical research institute begins one's study in the research of aqueous inorganic zinc-enriched coating
Zinc-rich paint.There is certain development to the nineties, such as the LW.1 types inorganic coating of Tianjin, the E06-l in Chongqing Three Gorges, Wuhan
Modern E777.1 etc..1994, upper starfish bridge sci-tech consultation Co., Ltd successfully developed QSZ.1 type high mode aqueous inorganics
Zinc-rich paint, and in the girder steel agent structure for being successfully applied to Xu Pu bridges in 1996.Research institute of China State Shipbuilding Corporation
It studies and the E06.99 type aqueous inorganic zinc-enriched coatings application developed is very extensive, this has benefited from its excellent corrosion resistance
And the coating construction performance of rapid curing film forming.
Zinc-rich paint is generally divided into organic zinc-rich paint and inorganic zinc coating two major classes according to the difference of film forming matter.
Organic zinc-rich paint is with synthetic resin such as epoxy, polyester resin etc. for film forming matter, using high-content zinc powder as the anti-of color stuffing
Become rusty coating, and product finalizes the design almost, and is widely used；Inorganic zinc coating is with inorganic polymer (such as silicate, phosphoric acid
Salt, weight plumbite etc.) it is film forming base fluid, zinc powder reacts, and zinc-iron complex compound is formed in metal surface, solid to be formed
Protect film.In recent years, more and more tighter to the limitation containing volatile organic solvent with the enhancing of people's environmental protection consciousness
Lattice, water paint, solventless coatings etc. become the mainstream of coating industry development, obtain people and more and more pay attention to.State at present
The base fluid of interior aqueous inorganic zinc-enriched coating is mainly the kinds such as silicate series, including sodium metasilicate, potassium silicate.Inorganic zinc coating
It is better than organic zinc-rich paint in electrostatic conductiveness, weatherability, heat resistance, solvent resistance, rust-preventing characteristic etc., especially when as list
When one coating, there is better durability and weatherability.So inorganic zinc coating is widely used in ocean and industrial environment
The long-lasting protection of steel construction, such as ship deck-plate, offshore steel structure, basin, bridge, television tower, chemical plant are developed in the world
Ethanol-soluble type self-curing inorganic zinc rich paint, base-material are ethyl orthosilicates under the catalysis of a small amount of hydrochloric acid, what hydrolytie polycondensation obtained
Ethyl polysilicate, feature are fast drying, good construction adaptability, are current most widely used inorganic zinc rich paints.Later, U.S.
NA5A is had developed first without VOC, and the aqueous inorganic potassium silicate anticorrosive coating that Corrosion Protection is excellent.Now, Osaka
The ZIES215 waterborne inorganic einc-rich primers of paint company exploitation have also accomplished zero contents of VOC, and rust-preventing characteristic is excellent, resistance to oil product and
Solvent soaking, heatproof is up to 400 DEG C.
But aqueous inorganic zinc-enriched coating is in constructional difficulties and the physical mechanical property of paint film etc. that there are still not
Foot.It is mainly manifested in：(1) microcosmic porous, shielding properties is poor.The content of zinc powder is up to 70 in general aqueous inorganic zinc-enriched coating
~80%, considerably beyond the critical size concentration (CPVC) of filler, the amount of inorganic silicate binder is own insufficient at this time
To fill the gap between zinc particle, cause coating easily porous.If being coated with other finishing coats on priming paint, finishing coat can be made to give birth to
Increase at the probability of bubble.(2) the working life difference of coating is short.When configuring coating, zinc powder addition is big, and zinc is an a kind of huge sum of money
Belong to, coating, which matches to postpone, to be prone to precipitate molding, and coating is made to fail, and is constructed to high quality, the high efficiency of coating and is brought difficulty.
(3) execution conditions are harsh.When curing of coatings, due to foring one layer of fine and close network between inorganic silicate, zinc powder, metal base
The junction of conjunction structure, coating and base material is a kind of zinc silicate polymers with chemical bonds, so metallic substrate surface
Processing must reach GB8923.88Sa2.5 grades or more.(4) brittleness of coating is poor.Since aqueous inorganic zinc-rich coating is by inorganic silicon
Hydrochlorate and zinc powder are made, and are in brittleness, coating is easy to crack, and the mechanical performances such as flexibility and impact resistance of coating are poor.China
Patent (CN 201510354462.8) is solved in the preparation of aqueous inorganic zinc-enriched coating by introducing organic water borne silicone acrylic emulsion
The deficiency of mechanical performance, is all greatly improved in water resistance and attachment and flexility；By introducing silane coupling agent
And adopting dropwise addition agitating mode by several times makes the storage stability of paint be improved.
So aqueous inorganic zinc-enriched coating is a kind of merits and demerits it is also significant that water paint, this is seriously affected
Its further genralrlization application.It constructs affected by environment larger with solidification, it is desirable to further shorten the time of its film-forming,
Construction requirement can be reduced again while not influencing its Corrosion Protection, also need to carry out deeper into R and D.
Invention content
Goal of the invention：In order to overcome deficiency in the prior art, the application draws up for high mode potassium silicate solution, and uses
Silicone acrylic emulsion and silane coupling agent are modified it, obtain the aqueous inorganic zinc-rich with superior antiseptic property and mechanical performance and apply
Material improves the adhesive force for improving coating while paint film applies film property, reduces difficulty of construction.
Technical solution：To achieve the above object, the present invention uses following technical scheme：
The weight ratio of a kind of aqueous inorganic zinc-enriched coating, including first component and second component, first component and second component is 3:7；
The first component includes the component of following parts by weight：
Aqueous silicate solution 70-80 parts by weight,
Silane coupling agent 1-5 parts by weight,
Silicone acrylic emulsion 10-15 parts by weight,
Trbasic zinc phosphate 1-10 parts by weight,
Anti-settling agent 1-5 parts by weight, wherein the anti-settling agent is made of the attapulgite and silver-colored zinc titanium dioxide of zinc doping；
The second component is made of zinc powder.
Preferably, the mass fraction of silicate or mass percent concentration are 70- in the aqueous silicate solution
80wt%..
Preferably, the aqueous silicate solution be potassium silicate aqueous solution, sodium silicate aqueous solution or lithium silicate aqueous solution one
Kind is several.
Preferably, the silane coupling agent include γ-(2,3- the third oxygen of epoxy) propyl trimethoxy silicane (i.e. KH560),
Methyltrimethoxysilane, methyltriethoxysilane.
The present invention is acted on using the connecting bridge of silane coupling agent, and silicone acrylic emulsion is introduced in inorganic polymer and is modified,
The advantages of having both organic siliconresin and acrylic emulsion using silicone acrylic emulsion has excellent water resistance, weather-proof after curing of coating
Property and mechanical performance.And simultaneously, the chemical constitution and polarity of silicone acrylic emulsion and silicate solutions are all not much different, it is not easy to occur
The advantages of phase separation, can be compounded well, and the solution obtained after compounding can preferably play the two, makes up aqueous inorganic
The defect of zinc-rich coating bad mechanical property, and its antiseptic property is not influenced.
Preferably, the solid content in the silicone acrylic emulsion is 45wt%.
Preferably, the mesh number of the zinc powder is 800 mesh, and purity is more than 98wt%.
Preferably, the weight ratio of the attapulgite of zinc doping and silver-colored zinc titanium dioxide is 1 in the anti-settling agent：0.2-1,
The zinc doping mass fraction of the attapulgite of middle zinc doping is 5-20wt%, and the doping total amount of silver-colored zinc is 3- in silver-colored zinc titanium dioxide
6wt%.
Present invention further proposes the preparation methods of above-mentioned aqueous inorganic zinc-enriched coating, include the following steps：
(1) aqueous silicate solution, silane coupling agent, silicone acrylic emulsion, trbasic zinc phosphate are weighed according to formula ratio described in claim 1
And anti-settling agent, it is sequentially placed into and is dispersed with stirring Multi Role Aircraft high speed and stirs evenly, obtain first component；
(2) after the first component stirred evenly step (1) stands defoaming, then by formula ratio zinc powder is added, continue with
80 mesh filter after 100rpm/min stirs evenly 30min, and packaging obtains product.
Preferably, in step (1), the rate of high-speed stirred is 1000r/min, mixing time 30min.
The base-material of aqueous inorganic zinc-enriched coating is mainly made of aqueous silicate solution, wherein Si-O keys and solid constituent (zinc
Powder), the ferro element of steel surface etc. generate silicate polymer.At the same time, the moisture and carbon dioxide in air are absorbed, after
Continuous reaction, mainly generates insoluble film and netted silicic acid zinc complex network, coating is connected with steel substrate, and makes
There is very high binding force between coating and matrix, plays the role of protecting steel.
Advantageous effect：Compared with prior art, the present invention has the following advantages：
(1) aqueous inorganic zinc-enriched coating dry film zinc prepared by the present invention contains 85% or more, is packed using two-component, and storage is steady
Qualitative to be not less than 6 months, it is excellent to be formed by the mechanical performances such as paint film adhesion and hardness, the 1000h of resistance to neutral salt spray test with
On, it is formed by that compact in paint film is good, and flexibility and impact resistance are good；
(2) preparation method of the present invention is simple for process, wherein the preparation of first component need to only be added at one time stirring can be completed,
Low energy consumption, easily realizes industrialized production；
(3) the invention introduces trbasic zinc phosphate, and trbasic zinc phosphate thermal stability is good, can significantly improve the corrosion-resistant of coating
Performance, but it is insoluble in water, than great, easily settles, trbasic zinc phosphate is dissolved in silicone acrylic emulsion, may be uniformly dispersed in
In the slurry of first component, while the addition of trbasic zinc phosphate can improve the compactness of paint film, and the corrosion resistance of coating is remarkably improved
10% or more；
(4) anti-settling agent that the present invention is made of the attapulgite and silver-colored zinc titanium dioxide of zinc doping, mixes in the anti-settling agent
Miscellaneous zinc is also possible to prevent precipitation molding, increases the storage stability of coating, reduce while improving coating dry film Zn content
Constructional difficulties degree.
Specific implementation mode
The present invention is further explained with reference to embodiment.
Embodiment 1
First weigh potassium silicate aqueous solution, 3kg γ-(the third oxygen of 2,3- epoxies) propyl trimethoxy silicane of 80kg 70wt%
The silicone acrylic emulsion, 5kg trbasic zinc phosphates, 1kg anti-settling agents that (i.e. KH560), 10kg solid contents are 45%, zinc doping wherein in anti-settling agent
The mass ratio of attapulgite and silver-colored zinc titanium dioxide is 1：0.2, it is added to being dispersed with stirring in Multi Role Aircraft, with 1000rpm/min
High-speed stirred 30min after standing a period of time defoaming, then weighs 233kg zinc powders, and continuation is stirred evenly with 100rpm/min
80 mesh filter after 30min, and packaging obtains product..
Embodiment 2
First weigh the potassium silicate aqueous solution, 5kg silane coupling agent KH560,13kg silicone acrylic emulsion, 2kg phosphorus of 75kg 75wt%
Sour zinc, 5kg anti-settling agents, the mass ratio of the attapulgite of zinc doping and silver-colored zinc titanium dioxide is 1 wherein in anti-settling agent：1, it is added extremely
It is dispersed with stirring in Multi Role Aircraft, with 1000rpm/min high-speed stirred 30min, after standing a period of time defoaming, then weighs 233kg
Zinc powder continues 80 mesh after stirring evenly 30min with 100rpm/min and filters, and packaging obtains product..
Embodiment 3
First weigh potassium silicate aqueous solution, 5kg methyltrimethoxysilane, 15kg silicone acrylic emulsions, the 8kg of 70kg 80wt%
Trbasic zinc phosphate, 2kg anti-settling agents, the mass ratio of the attapulgite of zinc doping and silver-colored zinc titanium dioxide is 1 wherein in anti-settling agent：0.5, add
Enter to being dispersed with stirring in Multi Role Aircraft, with 1000rpm/min high-speed stirred 30min, after standing a period of time defoaming, then weighs
233kg zinc powders continue 80 mesh after stirring evenly 30min with 100rpm/min and filter, and packaging obtains product..
Comparative example 1
Basic experimental conditions with embodiment 1, the difference is that not adding trbasic zinc phosphate in prepared coating.
Comparative example 2
Basic experimental conditions are with embodiment 1, and institute is not the difference is that add anti-settling agent.
The coating prepared by embodiment 1-3 and comparative example 1-2 is directly coated respectively with the bar of 120# or spraying method
On tinplate.It should be noted that when preparing the coating sample for testing impact resistance and adhesive force, tinplate is first used
20# sand paper is polished, and is then wiped with acetone.All coatings are tested for the property after being dried at room temperature for 1 week.Embodiment 1-3 and
The main performance testing result of coating prepared by comparative example 1-2 is shown in Table 1.
The main performance of coating prepared by 1 embodiment 2-4 of table
Above example is to play the role of illustrating example to the technical concept of the present invention, can not limit the present invention with this
Protection domain, those skilled in the art modify and are equal in the spirit and scope for not departing from technical solution of the present invention
It replaces, should all fall within the scope and spirit of the invention.
Claims (5)
1. a kind of aqueous inorganic zinc-enriched coating, it is characterised in that：The coating is grouped as by first component and second group, first component and second
The weight ratio of component is 3:7；
The first component includes the component of following parts by weight：
Aqueous silicate solution 70-80 parts by weight, the mass fraction 70-80 wt% of silicate in the aqueous silicate solution,
Silane coupling agent 1-5 parts by weight,
Silicone acrylic emulsion 10-15 parts by weight, the solid content in the silicone acrylic emulsion are 45 wt%,
Trbasic zinc phosphate 1-10 parts by weight,
Anti-settling agent 1-5 parts by weight, wherein the anti-settling agent is made of the attapulgite and silver-colored zinc titanium dioxide of zinc doping；
The second component is made of zinc powder, and the mesh number of the zinc powder is 800 mesh, and purity is more than 98 wt%；
The weight ratio of the attapulgite of zinc doping and silver-colored zinc titanium dioxide is 1 in the anti-settling agent：0.2-1, wherein zinc doping
The zinc doping mass fraction of attapulgite is 5-20 wt%, and the doping total amount of silver-colored zinc is 3-6 wt% in silver-colored zinc titanium dioxide.
2. aqueous inorganic zinc-enriched coating according to claim 1, it is characterised in that：The aqueous silicate solution is potassium silicate
The one or more of aqueous solution, sodium silicate aqueous solution or lithium silicate aqueous solution.
3. aqueous inorganic zinc-enriched coating according to claim 1, it is characterised in that：The silane coupling agent includes γ-
(the third oxygen of 2,3- epoxies) propyl trimethoxy silicane, methyltrimethoxysilane, methyltriethoxysilane.
4. a kind of preparation method of aqueous inorganic zinc-enriched coating as described in any one of claims 1-3, it is characterised in that：Including
Following steps：
（1）Aqueous silicate solution, silane coupling agent, silicone acrylic emulsion, trbasic zinc phosphate are weighed according to formula ratio described in claim 1 and are prevented
Heavy agent is sequentially placed into and is dispersed with stirring Multi Role Aircraft high speed and stirs evenly, obtains first component；
（2）By step（1）After the first component stirred evenly stands defoaming, then by formula ratio addition zinc powder, continue with 100 rpm/
80 mesh filter after min stirs evenly 30 min, and packaging obtains product.
5. the preparation method of aqueous inorganic zinc-enriched coating according to claim 4, it is characterised in that：In step（1）In, it is high
The rate of speed stirring is 1000 r/min, and mixing time is 30 min.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107189618A (en) * | 2017-05-27 | 2017-09-22 | 太仓卡斯特姆新材料有限公司 | A kind of waterborne inorganic einc-rich primer and preparation method thereof |
| CN108659588A (en) * | 2018-04-19 | 2018-10-16 | 唐山滦硕无机硅化物有限公司 | A kind of organo-mineral complexing paint binder and its preparation method and application |
| CN109468001A (en) * | 2018-09-19 | 2019-03-15 | 惠州市惠阳区嘉泰涂料有限公司 | A kind of waterborne inorganic einc-rich primer and preparation method thereof |
| CN110527329A (en) * | 2019-08-08 | 2019-12-03 | 深圳航天科技创新研究院 | A kind of anti-algae zinc-rich anti-corrosive paint of inorganic graphite alkene antibacterial and preparation method thereof |
| CN111690276A (en) * | 2020-07-21 | 2020-09-22 | 北京莱恩斯新材料科技有限公司 | Silicate inorganic water-based paint and preparation method thereof |
| CN114574014B (en) * | 2022-03-03 | 2023-04-21 | 广州集泰化工股份有限公司 | Water-based inorganic zinc-rich paint easy to construct and preparation method and application thereof |
| CN115851013B (en) * | 2022-12-26 | 2023-06-30 | 无锡华东锌盾科技有限公司 | High-film-thickness anti-cracking inorganic zinc-rich anti-slip paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104771A (en) * | 2007-08-20 | 2008-01-16 | 维新环保涂料（深圳）有限公司 | Water-based epoxy zinc-rich primer |
| CN104974626A (en) * | 2015-06-25 | 2015-10-14 | 武汉铁神化工有限公司 | Corrosion-preventing aqueous inorganic zinc-rich primer as well as preparation method and application thereof |
-
2016
- 2016-06-30 CN CN201610496517.3A patent/CN106118149B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104771A (en) * | 2007-08-20 | 2008-01-16 | 维新环保涂料（深圳）有限公司 | Water-based epoxy zinc-rich primer |
| CN104974626A (en) * | 2015-06-25 | 2015-10-14 | 武汉铁神化工有限公司 | Corrosion-preventing aqueous inorganic zinc-rich primer as well as preparation method and application thereof |
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Denomination of invention: A waterborne inorganic zinc rich coating and its preparation method Effective date of registration: 20201225 Granted publication date: 20181012 Pledgee: China Merchants Bank Limited by Share Ltd. Wuxi branch Pledgor: WUXI HUADONG ZINDN TECHNOLOGY Co.,Ltd. Registration number: Y2020320010257 |