CN104532258A - Preparation method of room-temperature curable nano sol hybridized polyalkylene oxide aluminum alloy surface preservative - Google Patents
Preparation method of room-temperature curable nano sol hybridized polyalkylene oxide aluminum alloy surface preservative Download PDFInfo
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Abstract
The invention discloses a preparation method of a room-temperature curable nano sol hybridized polyalkylene oxide aluminum alloy surface preservative and belongs to the technical field of metal preservatives. The preservative contains three components A, B and C, wherein the component A comprises an aqueous nano sol, an organic solvent, an acid-base regulator, a corrosion inhibitor and the like; the component B is an epoxy silane coupling agent KH560; and the component C is a curing agent and a leveling agent. The preparation method comprises the following steps: firstly, slowly dropwise adding the prepared component B into the component A; adjusting the pH value of the system to 3-4; dispersing three hours at a high speed of 1500 r/m by using a dispersing machine; then adding the component C in proportion; continuously dispersing 5 minutes and filtering; and finally, preparing the metal preservative. The metal surface preservative can be coated on the surface of an aluminum alloy panel by virtue of methods such as spraying, roller coating, spin coating and the like. The metal surface preservative disclosed by the invention is simple in preparation process and low in cost and has relatively strong corrosion resistance, high/low-temperature resistance and storage stability. Meanwhile, the preservative is low in discharge of VOC and environment-friendly and safe.
Description
Technical field
The invention belongs to anticolodal technical field, be specifically related to a kind of preparation method of Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable.
Background technology
Aluminum-aluminum alloy material has the features such as cost is low, light weight, excellent thermostability and mechanical property, in field widespread uses such as aerospace, automobile, machinofacture, marine ships.Aluminium surface can form one deck passive film under field conditions (factors).When aluminium alloy is exposed in corrosive environment, oxide film easily breaks, and causes corrosion phenomenon.The protection of metallic surface mainly adopts chromic salt anodizing process traditionally.The method preservative effect is excellent, but environmental pollution is serious.Therefore, the focus that environment amenable surface preparation technology becomes research is developed.
Such as, patent US5126074 discloses a kind of method of mixing the alkaline-earth metal hydrophosphate coating being configured to have antiseptic property adopting " hydrogen phosphate " negatively charged ion, and this coating can be applicable to aluminum alloy surface, and provides certain preservative activity.Patent CN101139500A discloses the treatment solution being become to be grouped into by silane coupling agent, organometallic compound, silicate, phosphoric acid etc.; treatment solution is coated on aluminum alloy surface and forms coating after heating, drying, this coating can provide effective corrosionproof protection to aluminum alloy base material.Patent GB1380748 discloses a kind of coating composition; the colloidal sol that the copolymerization that this coating composition comprises titanium ester cohydrolysis and trialkoxy silane obtains; by this coating in the coating of aluminum alloy surface and thermofixation film forming, corrosionproof protection can be realized to aluminum alloy base material.N.C. Rosero etc. take TEOS as inorganic precursor, MPS is silane coupling agent, EGDMA is organic monomer, adopts sol-gel process and obtains acrylic hybrid inorganic-organic corrosion protection coating through being heating and curing in aluminum alloy surface, and research finds that this coating has certain corrosion resistance nature.
Above technical literature can provide corrosionproof protection to aluminium alloy to a certain extent, but is mostly solvent based coating, and need through the process that is heating and curing, and this not only consumes the energy, and the waving of a large amount of organic solvent in coating
Send out the harm of pollution and the human body caused air.
Summary of the invention
The object of the invention is to, Nano sol hydridization polyalkylene oxide surface treatment agent is the fast setting film forming by the epoxy bond in epoxy silane and solidifying agent, and this treatment agent can be made at room temperature to solidify use.Be simultaneously inorganic materials with Nano sol, make organic-inorganic hybridized aqueous corrosion protection coating by sol-gel technique.Therefore this sanitas does not need external thermal source to assist, and is water-based masking liquid simultaneously, wherein only containing a small amount of alcoholic solvent, avoids the volatilization of a large amount of toxic organic solvents, reduces the pollution to environment.
For achieving the above object, technical scheme provided by the present invention is as follows:
The preparation method of the Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of a kind of ambient temperature curable of the present invention, is characterized in that having following process and step:
A. design (include formulation components (A), formulation components (B), formulation components (C), three's gross weight is in the 100%) formulation components (A) of formulated component:
Water nano colloidal sol 30-50%,
Solvent 5-10%,
Soda acid 1-2%,
Inhibiter 1-2%; Formulation components (B):
Silane coupling agent 40-60%;
Formulation components (C):
Amino curing agent 0.5-2%,
Flow agent 0.5-1%;
B. the preparation of sanitas
The B component of corresponding proportional quantity is joined slowly in the component A of corresponding proportional quantity and mix, then add component C, then through stirring and filter final obtained product.
Above-mentioned water nano colloidal sol is any one in water-based nano silicon dioxide, aluminum oxide, zirconia sol, and the solid content of Nano sol is 10% ~ 15%, and median size is at 60 ~ 70nm, and pH value is 5 ~ 6.
Above-mentioned organic solvent is any one in Virahol, ethanol, methyl alcohol.
Above-mentioned acid-base modifier is any one in Glacial acetic acid, dust technology, dilute sulphuric acid, and to be adjusted to pH be 3 ~ 4.
Above-mentioned inhibiter is any one in cerate, molybdate and phosphoric acid salt.
Above-mentioned silane coupling agent is epoxy silane coupling agent KH560.
Above-mentioned amino curing agent is any one in diethylenetriamine DETA, aminosiloxane KH560.
Above-mentioned flow agent is any one in auxiliary agent B YK-333, the BYK-346 of Bi Ke chemistry, BYK-348, BASF auxiliary agent EFKA-3580.
The application method of sanitas
Be coated in aluminum alloy base material surface by one or more in the methods such as spraying, dip-coating, roller coating, spin coating, obtained a coating film of smooth even.Coating action is complete, and wet film is solidified by room temperature environment, forms the coating of thickness at about 30-50um.
Accompanying drawing explanation
Fig. 1 is preparation flow figure of the present invention.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1:
The preparation method (see Fig. 1) of the Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of a kind of ambient temperature curable of the present embodiment, it comprises the following steps:
A. the design of formulated component
Formulation components (A):
Water nano colloidal sol 30%,
Solvent 5%,
Soda acid 1%,
Inhibiter 1%; Formulation components (B):
Silane coupling agent 60%;
Formulation components (C):
Amino curing agent 2%,
Flow agent 1%;
B. the preparation of sanitas
The B component of corresponding proportional quantity is joined slowly in the component A of corresponding proportional quantity and mix, then add component C, then through stirring and filter final obtained product;
The application method of sanitas
Adopt the mode of spraying to be coated in above aluminum alloy base material, control spray gun mist degree, load, air output are suitable for, first with coating rinse spray gun to be painted, again by cleaned aluminum alloy plate materials fixed placement, be sprayed on base material by coating uniformly, make coating smooth, thickness is moderate not to trickle.
Coating action is complete, is placed by substrate level, and avoid dust around, wet film is solidified by room temperature environment, forms the coating of thickness at about 30-50um.
In above-mentioned preparation process, it specifically comprises the steps:
the preparation of component A:
The component A water nano zirconia sol of mass ratio 30%, 1% cerous nitrate inhibiter, 5% Virahol organic solvent are joined high speed dispersor high speed successively and stir, make its dispersing and mixing even, stirring velocity is set as 800 revs/min, while dispersion, dropwise add Glacial acetic acid, and check solution acid alkalinity with pH meter, until pH value reaches 5-6.
add B component:
The component B silane coupling agent KH560 of mass ratio 60% is added dropwise in above-mentioned dispersion machine lentamente, regulates dispersion machine stirring velocity to be 1500 revs/min, keep the high speed dispersion time to be 3 hours.
add component C:
Be that the component C of the solidifying agent diethylenetriamine of 2% and the flow agent BYK-333 of 1% joins in dispersion machine by mass ratio, continue dispersion 5 minutes.Close dispersion machine, stop stirring, filter with 400 order nylon filtering cloths, obtain the finished product, deposit stand-by in loading air-tight bottle.
The performance test of sanitas film
What test ground adopted is sandblasting aluminium alloy plate, and film mode is spraying, and build is about 30um, drying conditions is 25 DEG C, 50% relative humidity, and time of drying is 5 days, spray and carry out performance test after 5 days, test environment conditions is normal temperature and pressure, and the performance test results is as shown in table 1.
Embodiment 2
The present embodiment its be from the difference of embodiment 1 ratio of component A and B component and quality proportioning different.This Metal surface anti-corrosion agent is by component A, and B component and component C form.Wherein the ratio of component A and quality proportioning as follows: water nano zirconia sol 35%, cerous nitrate inhibiter 2%, Virahol organic solvent 5%; Ratio and the quality proportioning of B component are as follows: silane coupling agent KH560 55%; Ratio and the quality proportioning of component C are as follows: solidifying agent diethylenetriamine 2% and flow agent BYK-333 1%.The performance test results is as shown in table 1.
Embodiment 3
The present embodiment and the difference of embodiment 1 are that component A water nano colloidal sol used is different.This metal conditioner is by component A, and B component and component C form.Wherein the ratio of component A and quality proportioning as follows: water nano alumina sol 40%, cerous nitrate inhibiter 1%, Virahol organic solvent 10%; Ratio and the quality proportioning of B component are as follows: silane coupling agent KH560 50%; Ratio and the quality proportioning of component C are as follows: solidifying agent diethylenetriamine 1% and flow agent BYK-333 1%.The performance test results is as shown in table 1.
The performance test results of table 1 sanitas film
Claims (8)
1. a preparation method for the Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable, is characterized in that having following process and step:
A. design (include formulation components (A), formulation components (B), formulation components (C), three's gross weight is in the 100%) formulation components (A) of formulated component:
Water nano colloidal sol 30-50%,
Solvent 5-10%,
Soda acid 1-2%,
Inhibiter 1-2%; Formulation components (B):
Silane coupling agent 40-60%;
Formulation components (C):
Amino curing agent 0.5-2%,
Flow agent 0.5-1%;
B. the preparation of sanitas:
The B component of corresponding proportional quantity is joined slowly in the component A of corresponding proportional quantity and mix, then add component C, then through stirring and filter final obtained product.
2. the preparation method of the Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of a kind of ambient temperature curable according to claim 1, it is characterized in that, described water nano colloidal sol is any one in water-based nano silicon dioxide, aluminum oxide, zirconia sol.
3. the preparation method of the Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of a kind of ambient temperature curable according to claim 1, is characterized in that, described organic solvent is any one in Virahol, ethanol, methyl alcohol.
4. the preparation method of a kind of Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable according to claim 1, is characterized in that: described acid-base modifier is the one in Glacial acetic acid, dust technology, dilute sulphuric acid, and to be adjusted to pH be 3 ~ 4.
5. the preparation method of a kind of Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable according to claim 1, is characterized in that: described inhibiter is the one in cerate, molybdate and phosphoric acid salt.
6. the preparation method of a kind of Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable according to claim 1, is characterized in that: described silane coupling agent is epoxy silane coupling agent KH560.
7. the preparation method of a kind of Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable according to claim 1, is characterized in that: described amino curing agent is any one in diethylenetriamine (DETA), amino silicane coupling agent (KH550).
8. the preparation method of a kind of Nano sol hydridization polyalkylene oxide aluminium alloy surface anti-corrosion agent of ambient temperature curable according to claim 1, is characterized in that: described flow agent is any one in auxiliary agent B YK-333, the BYK-346 of Bi Ke chemistry, BYK-348, BASF auxiliary agent EFKA-3580.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398333A (en) * | 2016-09-10 | 2017-02-15 | 上海大学 | Preparation method of nano sol hybrid polysiloxane magnesium alloy surface preservative |
| CN107090245A (en) * | 2017-06-14 | 2017-08-25 | 浙江洋铭实业有限公司 | The anticorrosive paint and anti-corrosion method of a kind of aluminum alloy ladder |
| CN108359289A (en) * | 2018-03-15 | 2018-08-03 | 南安市创培电子科技有限公司 | The preparation method of a kind of electronic equipment surface preservative |
| CN115011154A (en) * | 2022-06-20 | 2022-09-06 | 常州大学 | Preparation method of novel nano organic silicon composite coating capable of being cured at normal temperature with high efficiency |
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| CN102732071A (en) * | 2012-06-25 | 2012-10-17 | 浙江赛凡新材料有限公司 | Preparation method for self-cleaning nanometer composite sol for metal aluminum plate corrosion resistance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398333A (en) * | 2016-09-10 | 2017-02-15 | 上海大学 | Preparation method of nano sol hybrid polysiloxane magnesium alloy surface preservative |
| CN107090245A (en) * | 2017-06-14 | 2017-08-25 | 浙江洋铭实业有限公司 | The anticorrosive paint and anti-corrosion method of a kind of aluminum alloy ladder |
| CN108359289A (en) * | 2018-03-15 | 2018-08-03 | 南安市创培电子科技有限公司 | The preparation method of a kind of electronic equipment surface preservative |
| CN115011154A (en) * | 2022-06-20 | 2022-09-06 | 常州大学 | Preparation method of novel nano organic silicon composite coating capable of being cured at normal temperature with high efficiency |
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Application publication date: 20150422 |