CN105062272A - Metal corrosion prevention coating with added organic bentonite - Google Patents
Metal corrosion prevention coating with added organic bentonite Download PDFInfo
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- CN105062272A CN105062272A CN201510421909.9A CN201510421909A CN105062272A CN 105062272 A CN105062272 A CN 105062272A CN 201510421909 A CN201510421909 A CN 201510421909A CN 105062272 A CN105062272 A CN 105062272A
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Abstract
The invention discloses a metal corrosion prevention coating with added organic bentonite as well as a preparation method of the coating. The organic bentonite is added during preparation of the zinc-rich coating; after the organic bentonite is added to the coating, the coating leveling property is good, the sagging phenomenon is avoided, the problem of settlement of zinc powder in the zinc-rich coating can be well solved, and the performance of the coating can be greatly improved, so that the zinc-rich corrosion prevention coating with excellent comprehensive performance is prepared.
Description
Technical field
The present invention relates to a kind of metal anti-corrosive paint and preparation method thereof, particularly a kind of zinc-rich anti-corrosive paint and preparation method thereof, belong to painting field.
Background technology
Metal iron and steel we life in purposes widely, as automotive industry, production, construction industry, transportation, etc. industry.Within 2014, global crude steel output reaches 16.62 hundred million tons, increases by 1.2% on a year-on-year basis, and wherein Chinese crude steel output reaches 8.23 hundred million tons.But iron and steel has the poor shortcoming of rotproofness, corrosion is generally that between metallic surface and medium, generation chemistry or electrochemistry heterogeneous reaction cause, the mechanical property such as intensity, toughness of ferrous materials significantly can be reduced after corroding, destroy the geometrical shape of hardware, shorten the work-ing life of equipment.In order to improve the work-ing life of iron and steel, people delay the corrosion speed of iron and steel by various mode, as improved base material, increasing metal plating etc.By add other materials to suppress in pure metal or stop the corrosion shortcoming of iron and steel to be compared with original material, its physicals often lacks to some extent.And increase metal plating, such as galvanizing, electric arc zn spraying.But there is the problems such as difficulty of construction is large, environmental pollution in view of these techniques, and zinc layers is once the impaired drawbacks such as reparation that are difficult to, and brings corresponding difficulty to practical application.And apply one deck zinc rich primer at steel surface, and namely can be anticorrosion, do not change again the character of material itself.Containing a large amount of zinc powder in zinc-rich paint, close contact between zinc particles, between zinc particles and steel surface, the current potential of zinc is more negative than iron, so zinc atom easily loses electronics and becomes anode in electrolyte solution, iron rule is negative electrode.In positive column, zinc is corroded owing to losing electronics, and in cathodic area, steel surface constantly obtains electronics, thus is protected.After film has site tissue damage, expose matrix metal, can flow to iron and steel exposed portion at less area internal corrosion electric current, then the product of zinc is just deposited on and forms layer protecting film herein, delays corrosion and continues to occur.
Zinc-rich paint is divided into organic zinc rich paint and inorganic zinc coating, and it is film forming binder that organic zinc-rich paint commonly uses epoxy resin, chlorinated rubber, Vinylite and urethane resin.But the poor electric conductivity of the organic binder of organic zinc-rich paint.Inorganic zinc coating is divided into again solvent-borne type and water-based two class.Wherein aqueous inorganic zinc-enriched coating is made up of aqueous inorganic silicate (receive, potassium, lithium) resin, zinc powder, auxiliary agent etc.Aqueous inorganic zinc-enriched coating is due to its organic solvent-free, there is free from extraneous odour, do not fire the advantages such as not quick-fried, free from environmental pollution, but in waterborne zinc-rich dope preparing process, there will be sedimentation phenomenon, in order to overcome above shortcoming, in coating, add people's anti-settling agent, in coating, namely introduce loose webs thixotropy structure, material particle can be made to suspend and not lump, prevent from expecting particles settling, improve coating property, keep excellent levelling property, finally delay coating sedimentation.
Organobentonite is for raw material with natural smectite (mainly hectorite and wilkinite), react with pin salt (as quaternary ammonium salt) and form, add in coating, coating leveling is good, no sag phenomenon, the settlement issues of zinc powder in zinc-rich paint can be solved well, greatly improve the performance of coating.The present invention, by preparing in zinc-rich paint process, adds organobentonite, prepares a kind of zinc-rich anti-corrosive paint of excellent combination property.
Summary of the invention
Open a kind of interpolation bentonite metal anti-corrosive paint of the present invention and preparation method thereof, contained by this coating, the mass percent of component is:
Potassium silicate 20%-30%;
Super-fine zinc dust 45%-60%;
Organosilicon crylic acid latex 10%-20%;
Titanate coupling agent 3%-5%;
MgCl
2aqueous solution 3%-4%;
Organobentonite 4%-6%.
A kind of interpolation bentonite metal anti-corrosive paint, its preparation method comprises the steps:
(1) potassium silicate solution is poured in container, slowly heat;
(2) when being heated to 60-75 DEG C, organosilicon crylic acid latex is slowly added in container, and ceaselessly stir, after interpolation, stop heating;
(3) in container, add appropriate titanate coupling agent again, high-speed stirring;
(4) add zinc powder, ceaselessly stir;
(5) finally add appropriate MgCl successively
2the aqueous solution and organobentonite, obtain a kind of stable metal protective system.
Preferentially, step (4) in, added zinc powder is 500-600 order.
The present invention has following advantages and characteristic:
(1) preparation technology is simple;
(2) paint stability is good.
Embodiment
Embodiment one:
200g potassium silicate solution is poured in a heatable container, slow heating, after solution temperature reaches 60 DEG C, then drips 100g organosilicon crylic acid latex in container, and ceaselessly stir, after dropwising, stop heating, after system temperature is down to room temperature, 30g titanate coupling agent is added again in container, and improve stirring velocity, then add the 500 order super-fine zinc dusts of 600g, finally add 30gMgCl successively
2the aqueous solution and 40g organobentonite, obtain a kind of stable metal protective system.
Embodiment two:
500g potassium silicate solution is poured in a heatable container, slow heating, after solution temperature reaches 65 DEG C, then drips 200g organosilicon crylic acid latex in container, and ceaselessly stir, after dropwising, stop heating, after system temperature is down to room temperature, 100g titanate coupling agent is added again in container, and improve stirring velocity, then add the 550 order super-fine zinc dusts of 1000g, finally add 80gMgCl successively
2the aqueous solution and 120g organobentonite, obtain a kind of stable metal protective system.
Embodiment three:
1500g potassium silicate solution is poured in a heatable container, slow heating, after solution temperature reaches 75 DEG C, then drips 750g organosilicon crylic acid latex in container, and ceaselessly stir, after dropwising, stop heating, after system temperature is down to room temperature, 150g titanate coupling agent is added again in container, and improve stirring velocity, then add the 600 order super-fine zinc dusts of 2550g, finally add 150gMgCl successively
2the aqueous solution and 200g organobentonite, obtain a kind of stable metal protective system.
Claims (3)
1. one kind is added bentonite metal anti-corrosive paint and preparation method thereof, and it is characterized in that, this preparation method comprises the following steps:
(1) potassium silicate solution is poured in container, slowly heat;
(2) when being heated to 60-75 DEG C, organosilicon crylic acid latex is slowly added in container, and ceaselessly stir, after interpolation, stop heating;
(3) in container, add appropriate titanate coupling agent again, high-speed stirring;
(4) add zinc powder, ceaselessly stir;
(5) finally add appropriate MgCl successively
2the aqueous solution and organobentonite, obtain a kind of stable metal protective system.
2. one according to claim 1 adds bentonite metal anti-corrosive paint and preparation method thereof, it is characterized in that, step (4) in, added zinc powder is 500-600 order, and interpolation mass percent is 45%-60%.
3. one according to claim 1 adds bentonite metal anti-corrosive paint and preparation method thereof, it is characterized in that, step (5) in, it is 4%-6% that bentonite adds mass percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510421909.9A CN105062272A (en) | 2015-07-19 | 2015-07-19 | Metal corrosion prevention coating with added organic bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510421909.9A CN105062272A (en) | 2015-07-19 | 2015-07-19 | Metal corrosion prevention coating with added organic bentonite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105062272A true CN105062272A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510421909.9A Pending CN105062272A (en) | 2015-07-19 | 2015-07-19 | Metal corrosion prevention coating with added organic bentonite |
Country Status (1)
| Country | Link |
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| CN (1) | CN105062272A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205432A (en) * | 2006-12-19 | 2008-06-25 | 唐小菊 | Heat insulating coatings and preparation thereof |
| CN101328387A (en) * | 2008-08-01 | 2008-12-24 | 河海大学 | Modified self-curing non-chromium zinc based anti-corrosive paint and preparation thereof |
| CN103756377A (en) * | 2014-01-22 | 2014-04-30 | 沈阳工业大学 | Modified silicate waterborne zinc-rich anticorrosive coating employing organic montmorillonite as anti-settling dispersant |
-
2015
- 2015-07-19 CN CN201510421909.9A patent/CN105062272A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205432A (en) * | 2006-12-19 | 2008-06-25 | 唐小菊 | Heat insulating coatings and preparation thereof |
| CN101328387A (en) * | 2008-08-01 | 2008-12-24 | 河海大学 | Modified self-curing non-chromium zinc based anti-corrosive paint and preparation thereof |
| CN103756377A (en) * | 2014-01-22 | 2014-04-30 | 沈阳工业大学 | Modified silicate waterborne zinc-rich anticorrosive coating employing organic montmorillonite as anti-settling dispersant |
Non-Patent Citations (2)
| Title |
|---|
| 张鹏飞等: ""水性无机富锌涂料及其改性"", 《上海涂料》 * |
| 彭图治: "《浙江省第二届青年学术论坛文集》", 31 October 2001, 中国科学技术出版社 * |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151118 |
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| WD01 | Invention patent application deemed withdrawn after publication |