CN102993943B - Modified silanized metal surface pre-treating agent containing octylphenol polyoxyethylene ether and preparation method thereof - Google Patents
Modified silanized metal surface pre-treating agent containing octylphenol polyoxyethylene ether and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a modified silanized metal surface pre-treating agent containing octylphenol polyoxyethylene ether. The pre-treating agent is prepared from the following raw material components in parts by weight: 100 parts of de-ionized water, 10-15 parts of modified coupling agent, 10-15 parts of propyl alcohol, 30-40 parts of silane coupling agent 791, 20-30 parts of silane coupling agent KH-570, 0.001-0.003 part of sodium perfluorooctane sulfonate, 0.3-0.5 part of tree ash, 4-6 parts of polyvinyl acetate emulsion, 2-3 parts of urea, 0.4-1.0 part of phenylethylphenol polyoxyethylene ether, 0.2-0.8 part of octylphenol polyoxyethylene ether, 0.005-0.01 part of lanthanum nitrate, and 0.1-0.3 part of phytic acid. By adopting coupling agent modification and compounding, and adding auxiliary agents, the mixture reacts to obtain the end product. The modified silanized metal surface pre-treating agent has the characteristics of being non-toxic, environment-friendly, and convenient to use; and a silane film is compact, uniform, large in adhesive force and good in corrosion resistance.
Description
Technical field
The present invention relates to metal conditioner technology, be specifically related to a kind of modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether and preparation method thereof.
Background technology
The corrosion of metallic substance all occurs all the time around us.About there is every year the metallic substance of 10% according to statistics for corrosion and cannot reclaiming, this not only causes the huge waste of metals resources, also serious threat is brought to normal production and personnel safety, carrying out surface treatment to metallic substance is a kind of conventional anti-corrosion method, is parco-lubrizing at present for coated metal pre-treatment main method.But traditional metal surface treating method also exists because having the problems such as pollution containing hazardous and noxious substances to environment, has been not suitable for the environmental requirement that human society is more and more higher.
Metallic substance, after phosphatization, can strengthen the sticking power between metallic matrix and coating, improves corrosion resistance nature.Bonderizing no doubt has plurality of advantages, but also there is the drawback that much himself cannot overcome: in etching solution, all contain the objectionable impurities such as phosphoric acid salt and heavy metal, and in treating processes, all more or less can produce sediment and obnoxious flavour, what impact was produced normally carries out, and the waste water COD of discharge and heavy metal will endanger environment if do not entered environmental protection treatment; In addition, bonderizing major part need be carried out under the condition of heating, and energy consumption is comparatively large, complex process, and operation is also inconvenient.Along with the development and progression of society, people are also more and more high to the requirement of coated metal prefinished products, not only wish that its self performance is excellent, more wish that it can meet growing environmental protection needs, HUMAN HEALTH requires and resources conservation requirement.These drawbacks of conventional phosphatizing process just seriously govern further developing and application of it.So people hope and can develop a kind of brand-new treatment process, while it can keep conventional phosphatizing treatment process advantage, can accomplish that again technique is simple, environmental protection, comprehensive cost is low.
Silanization treatment has following multiple advantage compared with conventional phosphatizing: without harmful heavy metal ions, not phosphorous, without the need to heating.Silane treatment process does not produce sediment, and the treatment time is short, controls easy.Treatment step is few, and can save table and adjust operation, tank liquor is reusable.The sticking power of effective raising paint to base material.Can the multiple base material such as collineation processing iron plate, galvanized sheet, aluminium sheet.But with regard to current domestic technique, not very ripe, in the type selecting of especially silane and auxiliary agent, also have a lot of not enough place.
Metallic surface silanization process has broad application prospects, but silane film formed by prior art exists that corrosion resistance is strong, film forming is uneven, do not possess the defect such as " selfreparing " performance or " selfreparing " poor performance, limits its development.
Summary of the invention
The invention discloses a kind of modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether and preparation method thereof.
The technical solution used in the present invention is as follows:
A kind of modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether, it is characterized in that, be made up of the feed composition of following weight part: deionized water 100, modification coupling agent 10-15, propyl alcohol 10-15, silane coupling agent 791 30-40, Silane coupling reagent KH-570 20-30, perfluoro octyl sulfonic acid sodium 0.001-0.003, tree ash 0.3-0.5, polyvinyl acetate emulsion 4-6, urea 2-3, styroyl phenol polyethenoxy ether 0.4-1.0, polyoxyethylene octylphenol ether 0.2-0.8, lanthanum nitrate 0.005-0.01, phytic acid 0.1-0.3.
Described a kind of modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether, it is characterized in that, be made up of the feed composition of following weight part: deionized water 100, modification coupling agent 13, propyl alcohol 14, Silane coupling reagent KH-570 25, silane coupling agent 791 35, dicumyl peroxide 1.5, Sodium perfluorooctanoate 0.0022, tree ash 0.3, polyvinyl acetate emulsion 4, urea 2, styroyl phenol polyethenoxy ether 0.6, polyoxyethylene octylphenol ether 0.5, lanthanum nitrate 0.007, phytic acid 0.25.
The preparation method of the described modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether, is characterized in that, comprise the following steps:
(1) modification coupling agent preparation
Water-soluble nanoscale silica sol is added 4-5% nano zinc powder, 3-5% ferric oxide, 4-6%2-aminoethyl 17 alkenyl imidazoline, be mixed and heated to 100-110 DEG C, cool after 20-30 minute;
(2) in stirring tank, first Silane coupling reagent KH-570 is added by formula rate amount, then dicumyl peroxide is added, after stirring 3-4 minute with the speed of 200-300rpm, add silane coupling agent 791 again, after stirring 3-5 minute with the speed of 300-400rpm, Sodium perfluorooctanoate and tree ash are added wherein, at room temperature with under the condition of protection of inert gas, stir 30-40 minute with the speed of 350-450rpm again, obtain built up silane couple A;
(3) by formula rate, deionized water is injected stirring tank, under whipped state, the modification coupling agent that step (1) is obtained is added in still, stir after 1-2 minute, add propyl alcohol again, continue to stir after 2-3 minute, then add polyvinyl acetate emulsion, stir 5-6 minute, obtain mixing solutions B, stirring velocity is 2000 ~ 2500rpm;
(4) mixed by A and B, then add urea, styroyl phenol polyethenoxy ether, polyoxyethylene octylphenol ether, phytic acid successively, under whipped state, isothermal reaction under 60-70 DEG C of condition, obtains mixed solution C;
(5) finally add lanthanum nitrate, stir after 10-15 minute, filter and obtain the finished product.
Use temperature: normal temperature, the treatment time: 3 ~ 5 minutes (drill traverse) 1 ~ 3 minute (spray)
Working liquid ph: 4.5-5.5 working concentration: 4-5%
Beneficial effect of the present invention:
The present invention is by the modification of coupling agent and composite, overcome silane film in prior art and there is the shortcoming that corrosion resistance is not strong, film forming is uneven, the present invention is by regulating formula materials, improve preparation technology, the modified silanized surface pretreatment agent obtained, has feature that is nontoxic, environmental protection, the silane film corrosion resistance formed in metallic surface is strong, film dense uniform, strong adhesion, produces without dust phenomenon, is widely used in the pre-treatment of the spraying paint that dusts of various metallic surface.
Embodiment
Embodiment 1
Raw material (kg) is taken: deionized water 100, modification coupling agent 13, propyl alcohol 14, Silane coupling reagent KH-570 25, silane coupling agent 791 35, dicumyl peroxide 1.5, Sodium perfluorooctanoate 0.0022, tree ash 0.3, polyvinyl acetate emulsion 4, urea 2, styroyl phenol polyethenoxy ether 0.6, polyoxyethylene octylphenol ether 0.5, lanthanum nitrate 0.007, phytic acid 0.25 by following weight
Preparation method:
(1) modification coupling agent preparation
Water-soluble nanoscale silica sol is added 5% nano zinc powder, 4% ferric oxide, 5% 2-aminoethyl 17 alkenyl imidazoline, be mixed and heated to 105 DEG C, cool after 20-30 minute;
(2) in stirring tank, first Silane coupling reagent KH-570 is added by formula rate amount, then dicumyl peroxide is added, after stirring 3-4 minute with the speed of 200-300rpm, add silane coupling agent 791 again, after stirring 3-5 minute with the speed of 300-400rpm, Sodium perfluorooctanoate and tree ash are added wherein, at room temperature with under the condition of protection of inert gas, stir 30-40 minute with the speed of 350-450rpm again, obtain built up silane couple A;
(3) by formula rate, deionized water is injected stirring tank, under whipped state, the modification coupling agent that step (1) is obtained is added in still, stir after 1-2 minute, add propyl alcohol again, continue to stir after 2-3 minute, then add polyvinyl acetate emulsion, stir 5-6 minute, obtain mixing solutions B, stirring velocity is 2000 ~ 2500rpm;
(4) mixed by A and B, then add urea, styroyl phenol polyethenoxy ether, polyoxyethylene octylphenol ether, phytic acid successively, under whipped state, isothermal reaction under 65 DEG C of conditions, obtains mixed solution C;
(5) finally add lanthanum nitrate, stir after 10-15 minute, filter and obtain the finished product.
The property indices of the silanized surface pretreating reagent that modified silanized surface pretreatment agent of the present invention and prior art are produced contrasts as following table:
| Project | Implement 1 | Prior art |
| Treatment time min | 4 | 20 |
| Treatment temp DEG C | Normal temperature | 140 |
| Post-treatment condition | Pure water is washed | First pickling, is washing with water |
| Tank liquor pH value | 5.0 | 9.0 |
| Silane film | Dense uniform | Rete is uneven |
During Surface silanization protection treatment process metal works of the present invention, there are energy-saving and environmental protection as can be seen from the table, the feature that effect is high, simultaneously silane film dense uniform.
Claims (1)
1. the modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether, it is characterized in that, be made up of the feed composition of following weight part: deionized water 100, modification coupling agent 13, propyl alcohol 14, Silane coupling reagent KH-570 25, silane coupling agent 791 35, dicumyl peroxide 1.5, Sodium perfluorooctanoate 0.0022, tree ash 0.3, polyvinyl acetate emulsion 4, urea 2, styroyl phenol polyethenoxy ether 0.6, polyoxyethylene octylphenol ether 0.5, lanthanum nitrate 0.007, phytic acid 0.25;
The preparation method of the described modified silanized metallic surface pretreating reagent containing polyoxyethylene octylphenol ether, comprises the following steps:
(1) modification coupling agent preparation
Water-soluble nanoscale silica sol is added 4-5% nano zinc powder, 3-5% ferric oxide, 4-6%2-aminoethyl 17 alkenyl imidazoline, be mixed and heated to 100-110 DEG C, cool after 20-30 minute;
(2) in stirring tank, first Silane coupling reagent KH-570 is added by formula rate amount, then dicumyl peroxide is added, after stirring 3-4 minute with the speed of 200-300rpm, add silane coupling agent 791 again, after stirring 3-5 minute with the speed of 300-400rpm, Sodium perfluorooctanoate and tree ash are added wherein, at room temperature with under the condition of protection of inert gas, stir 30-40 minute with the speed of 350-450rpm again, obtain built up silane couple A;
(3) by formula rate, deionized water is injected stirring tank, under whipped state, the modification coupling agent that step (1) is obtained is added in still, stir after 1-2 minute, add propyl alcohol again, continue to stir after 2-3 minute, then add polyvinyl acetate emulsion, stir 5-6 minute, obtain mixing solutions B, stirring velocity is 2000 ~ 2500rpm;
(4) mixed by A and B, then add urea, styroyl phenol polyethenoxy ether, polyoxyethylene octylphenol ether, phytic acid successively, under whipped state, isothermal reaction under 60-70 DEG C of condition, obtains mixed solution C;
(5) finally add lanthanum nitrate, stir after 10-15 minute, filter and obtain the finished product.
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| CN103450800A (en) * | 2013-08-29 | 2013-12-18 | 安徽省宿州市龙华机械制造有限公司 | Modified silanized metal surface pretreatment agent containing polyoxyethylene sorbitan monooleate and preparation method thereof |
| CN103450799A (en) * | 2013-08-29 | 2013-12-18 | 安徽省宿州市龙华机械制造有限公司 | Modified silanized metal surface pretreatment agent containing sodium carboxymethyl cellulose and preparation method thereof |
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| CN105624685A (en) * | 2015-12-31 | 2016-06-01 | 芜湖市金宇石化设备有限公司 | Preparation method for anti-corrosion basic fluid for anti-corrosion treatment of automobile aluminum pedal |
| CN105463438A (en) * | 2015-12-31 | 2016-04-06 | 芜湖市金宇石化设备有限公司 | Anti-corrosion treatment method for automobile aluminum pedal |
| CN105462397A (en) * | 2015-12-31 | 2016-04-06 | 辛范范 | Improved external wall paint and preparation method thereof |
| CN105694618A (en) * | 2016-03-04 | 2016-06-22 | 芜湖市金宇石化设备有限公司 | Treating agent for coating crane tube |
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