CN105088207A - Architectural aluminum profile chromate-free passivation treating fluid and preparation method thereof - Google Patents
Architectural aluminum profile chromate-free passivation treating fluid and preparation method thereof Download PDFInfo
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- CN105088207A CN105088207A CN201510521872.7A CN201510521872A CN105088207A CN 105088207 A CN105088207 A CN 105088207A CN 201510521872 A CN201510521872 A CN 201510521872A CN 105088207 A CN105088207 A CN 105088207A
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Abstract
The invention discloses an architectural aluminum profile chromate-free passivation treating fluid which comprises raw materials in parts by weight as follows: 10-10.5 parts of cerous nitrate, 2-2.2 parts of potassium permanganate, 0.1-0.2 part of chitosan, 0.1-0.2 part of nano antimony tin oxide, 0.3-0.4 part of ammonium metavanadate, 0.2-0.3 part of epoxypropane, 0.6-0.8 part of styrene, 0.2-0.3 part of acrylamide, 0.4-0.5 part of crylic acid, 0.05-0.1 part of azodiisobutyronitrile, 0.5-0.6 part of sodium allylsulfonate, 0.02-0.03 part of lauryl sodium sulfate, 0.9-1 part of cetane, 0.3-0.4 part of nanosilicon dioxide, 0.3-0.4 part of nanometer titania and an appropriate amount of deionized water. According to the treating fluid, a uniform oxidation film can be formed rapidly, and the formed film is more compact and uniform; and the compactness and the corrosion resistance of the oxidation film are improved by using chitosan, nano antimony tin oxide, ammonium metavanadate and epoxypropane.
Description
Technical field
The present invention relates to chromium-free metal surface treatment agent technical field, particularly relate to a kind of architectural aluminum section non-chromium passivation treatment fluid and preparation method thereof.
Background technology
Spray-painted aluminum profile normal chromic salt chemistry deactivation method that adopts before application carries out pre-treatment, but hexavalent chromium has carcinogenesis to human body in chromic salt process, deal with improperly and can cause serious pollution to environment, therefore chromating technique receives great concern, and some country has limited it and used.Recent domestic has carried out large quantity research to non-chromium inactivating technique, develops the multiple passivating solution system for handling such as rare earth, cobalt salt, silicate, molybdic acid, titanium/zirconate, has certain corrosion resistance nature.At present, employing rare-earth cerium compound is that the research of the non-chromium inactivating technique of main component is more, but cerium salt and oxidant species various, adopt cerous nitrate and potassium permanganate composite treating agent to carry out Passivation Treatment to aluminium section bar, obtain good film-formation result and outward appearance, but still to there is passive film even not for the passivation effect of this treatment agent, compactness is inadequate, processing speed is slow, the imperfect shortcoming of corrosion resistance, needs to improve.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of architectural aluminum section non-chromium passivation treatment fluid and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of architectural aluminum section non-chromium passivation treatment fluid, be made up of the raw material of following weight part: cerous nitrate 10-10.5, potassium permanganate 2-2.2, chitosan 0.1-0.2, nano antimony tin oxide 0.1-0.2, ammonium meta-vanadate 0.3-0.4, propylene oxide 0.2-0.3, vinylbenzene 0.6-0.8, acrylamide 0.2-0.3, vinylformic acid 0.4-0.5, Diisopropyl azodicarboxylate 0.05-0.1, sodium allylsulfonate 0.5-0.6, sodium lauryl sulphate 0.02-0.03, n-Hexadecane 0.9-1, silane coupling agent KH570 surface modified nano silicon 0.3-0.4, silane coupling agent KH570 surface-modified nano titanium dioxide 0.3-0.4, deionized water is appropriate.
The preparation method of described architectural aluminum section non-chromium passivation treatment fluid, comprises the following steps:
(1) sodium lauryl sulphate is dissolved in the deionized water of 7-7.5 weight part and forms the aqueous solution, n-Hexadecane is mixed with vinylbenzene, silane coupling agent KH570 surface modified nano silicon, silane coupling agent KH570 surface-modified nano titanium dioxide, nano antimony tin oxide, propylene oxide is added after being stirred to dissolving, then by above two kinds of liquid mixing, supersound process 3-4min under ultrasonic cell disruptor, obtains emulsion; Described emulsion and acrylamide, vinylformic acid, sodium allylsulfonate are mixed, stirs, pass into nitrogen 15-16min, regulate pH=8, be warming up to 60-62 DEG C, add Diisopropyl azodicarboxylate, continue stirring reaction 1-2h, obtain membrane-forming agent;
(2) cerous nitrate is mixed with the aqueous solution of 10-10.5g/L, add potassium permanganate by the concentration of 2-2.2g/L again and be mixed with solution, add membrane-forming agent and other remaining components that 0.9-1.1wt% (1) step obtains again, stir, supersound process 3-4min under ultrasonic cell disruptor, to obtain final product.
First aluminium section bar is carried out pre-treatment during use, then be immersed in treatment solution by aluminium section bar and carry out Passivation Treatment, temperature is 15-45 DEG C, and pH value is 1.8-4.5, and process 20-23min, takes out, and rinses with water, dries.
Advantage of the present invention is: treatment solution of the present invention, by using cerous nitrate, potassium permanganate, decreases environmental pollution; Film is made into by using nano silicon, nano titanium oxide and organic materials, make nanoparticle dispersed with system, can promote that passivation uniform composition is coated on aluminium shape surface fast, the uniform oxide film of quick formation, and nano silicon, nano titanium oxide have good antioxidant property, slowing down corrosion speed, improve paint application performance, reduce hole simultaneously, make the film of formation finer and close, even; By using chitosan, nano antimony tin oxide, ammonium meta-vanadate, propylene oxide, improve the compactness of oxide film, erosion resistance.
Embodiment
A kind of architectural aluminum section non-chromium passivation treatment fluid, is made up of the raw material of following weight part (kilogram): cerous nitrate 10, potassium permanganate 2, chitosan 0.1, nano antimony tin oxide 0.1, ammonium meta-vanadate 0.3, propylene oxide 0.2, vinylbenzene 0.6, acrylamide 0.2, vinylformic acid 0.4, Diisopropyl azodicarboxylate 0.05, sodium allylsulfonate 0.5, sodium lauryl sulphate 0.02, n-Hexadecane 0.9, silane coupling agent KH570 surface modified nano silicon 0.3, silane coupling agent KH570 surface-modified nano titanium dioxide 0.3, deionized water are appropriate.
The preparation method of described architectural aluminum section non-chromium passivation treatment fluid, comprises the following steps:
(1) sodium lauryl sulphate is dissolved in the deionized water of 7 weight parts and forms the aqueous solution, n-Hexadecane is mixed with vinylbenzene, silane coupling agent KH570 surface modified nano silicon, silane coupling agent KH570 surface-modified nano titanium dioxide, nano antimony tin oxide, propylene oxide is added after being stirred to dissolving, then by above two kinds of liquid mixing, supersound process 3min under ultrasonic cell disruptor, obtains emulsion; Described emulsion and acrylamide, vinylformic acid, sodium allylsulfonate are mixed, stirs, pass into nitrogen 15min, regulate pH=8, be warming up to 60 DEG C, add Diisopropyl azodicarboxylate, continue stirring reaction 1h, obtain membrane-forming agent;
(2) cerous nitrate is mixed with the aqueous solution of 10g/L, add potassium permanganate by the concentration of 2g/L again and be mixed with solution, then add the membrane-forming agent and other remaining components that 0.9wt% (1) step obtains, stir, supersound process 3min under ultrasonic cell disruptor, to obtain final product.
First aluminium section bar is carried out pre-treatment during use, then be immersed in treatment solution by aluminium section bar and carry out Passivation Treatment, temperature is 15 DEG C, and pH value is 1.8, and process 20min, takes out, and rinses with water, dries.
Passive film surface is finer and close, and naked eyes this film visible is golden yellow, has good outward appearance; After the test of the acetic acid salt spray of 1000h, corrosion-free, without obscission.
Claims (2)
1. an architectural aluminum section non-chromium passivation treatment fluid, it is characterized in that being made up of the raw material of following weight part: cerous nitrate 10-10.5, potassium permanganate 2-2.2, chitosan 0.1-0.2, nano antimony tin oxide 0.1-0.2, ammonium meta-vanadate 0.3-0.4, propylene oxide 0.2-0.3, vinylbenzene 0.6-0.8, acrylamide 0.2-0.3, vinylformic acid 0.4-0.5, Diisopropyl azodicarboxylate 0.05-0.1, sodium allylsulfonate 0.5-0.6, sodium lauryl sulphate 0.02-0.03, n-Hexadecane 0.9-1, silane coupling agent KH570 surface modified nano silicon 0.3-0.4, silane coupling agent KH570 surface-modified nano titanium dioxide 0.3-0.4, deionized water is appropriate.
2. the preparation method of architectural aluminum section non-chromium passivation treatment fluid according to claim 1, is characterized in that comprising the following steps:
(1) sodium lauryl sulphate is dissolved in the deionized water of 7-7.5 weight part and forms the aqueous solution, n-Hexadecane is mixed with vinylbenzene, silane coupling agent KH570 surface modified nano silicon, silane coupling agent KH570 surface-modified nano titanium dioxide, nano antimony tin oxide, propylene oxide is added after being stirred to dissolving, then by above two kinds of liquid mixing, supersound process 3-4min under ultrasonic cell disruptor, obtains emulsion; Described emulsion and acrylamide, vinylformic acid, sodium allylsulfonate are mixed, stirs, pass into nitrogen 15-16min, regulate pH=8, be warming up to 60-62 DEG C, add Diisopropyl azodicarboxylate, continue stirring reaction 1-2h, obtain membrane-forming agent;
(2) cerous nitrate is mixed with the aqueous solution of 10-10.5g/L, add potassium permanganate by the concentration of 2-2.2g/L again and be mixed with solution, add membrane-forming agent and other remaining components that 0.9-1.1wt% (1) step obtains again, stir, supersound process 3-4min under ultrasonic cell disruptor, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510521872.7A CN105088207A (en) | 2015-08-24 | 2015-08-24 | Architectural aluminum profile chromate-free passivation treating fluid and preparation method thereof |
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| CN201510521872.7A CN105088207A (en) | 2015-08-24 | 2015-08-24 | Architectural aluminum profile chromate-free passivation treating fluid and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835106A (en) * | 2016-12-30 | 2017-06-13 | 张庆 | A kind of good shitosan Inorganic whisker passivating film of film forming |
| CN107604347A (en) * | 2017-09-29 | 2018-01-19 | 马鞍山松鹤信息科技有限公司 | A kind of architectural shape surface conditioning agent and its preparation technology |
| CN114381724A (en) * | 2020-10-17 | 2022-04-22 | 苏州市汉宜化学有限公司 | High-temperature-resistant chromium-free passivator for tin and tin alloy |
-
2015
- 2015-08-24 CN CN201510521872.7A patent/CN105088207A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835106A (en) * | 2016-12-30 | 2017-06-13 | 张庆 | A kind of good shitosan Inorganic whisker passivating film of film forming |
| CN107604347A (en) * | 2017-09-29 | 2018-01-19 | 马鞍山松鹤信息科技有限公司 | A kind of architectural shape surface conditioning agent and its preparation technology |
| CN114381724A (en) * | 2020-10-17 | 2022-04-22 | 苏州市汉宜化学有限公司 | High-temperature-resistant chromium-free passivator for tin and tin alloy |
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Application publication date: 20151125 |