CN105088206A - High-adhesion aluminum profile chromate-free passivation treating fluid and preparation method thereof - Google Patents
High-adhesion aluminum profile chromate-free passivation treating fluid and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-adhesion 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, 0.3-0.4 part of hexafluorozirconic acid, 0.6-0.8 part of hydrofluoric acid, 0.3-0.4 part of maleic anhydride, 0.2-0.3 part of texanol, 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. The film formed by the treating fluid is more compact and uniform; and hexafluorozirconic acid, hydrofluoric acid, maleic anhydride and texanol are used, and not only the spreadability and the film-forming property are excellent, but also high adhesive force can be formed on the surface of an aluminum profile, so that falling is prevented.
Description
Technical field
The present invention relates to chromium-free metal surface treatment agent technical field, particularly relate to a kind of high adhesive force aluminium section bar 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 high adhesive force aluminium section bar non-chromium passivation treatment fluid and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of high adhesive force aluminium section bar 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, fluorine zirconic acid 0.3-0.4, hydrofluoric acid 0.6-0.8, maleic anhydride 0.3-0.4, Lauryl Alcohol ester 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 high adhesive force aluminium section bar 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 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 fluorine zirconic acid, hydrofluoric acid, maleic anhydride, Lauryl Alcohol ester, not only spreadability is good, good film-forming property, and can form stronger sticking power at aluminium shape surface, prevents from coming off.
Embodiment
A kind of high adhesive force aluminium section bar non-chromium passivation treatment fluid, is made up of the raw material of following weight part (kilogram): cerous nitrate 10, potassium permanganate 2, fluorine zirconic acid 0.3, hydrofluoric acid 0.6, maleic anhydride 0.3, Lauryl Alcohol ester 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 high adhesive force aluminium section bar 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 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. a high adhesive force aluminium section bar 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, fluorine zirconic acid 0.3-0.4, hydrofluoric acid 0.6-0.8, maleic anhydride 0.3-0.4, Lauryl Alcohol ester 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 high adhesive force aluminium section bar 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 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.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430375A (en) * | 2016-12-22 | 2017-02-22 | 郑州丽福爱生物技术有限公司 | Sewage treatment agent for controlling urban and rural polluted rivers and preparation method of sewage treatment agent |
| CN106587200A (en) * | 2016-12-22 | 2017-04-26 | 郑州丽福爱生物技术有限公司 | Sewage treatment agent for urban and rural polluted rivers, and preparation method thereof |
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2015
- 2015-08-24 CN CN201510521908.1A patent/CN105088206A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106430375A (en) * | 2016-12-22 | 2017-02-22 | 郑州丽福爱生物技术有限公司 | Sewage treatment agent for controlling urban and rural polluted rivers and preparation method of sewage treatment agent |
| CN106587200A (en) * | 2016-12-22 | 2017-04-26 | 郑州丽福爱生物技术有限公司 | Sewage treatment agent for urban and rural polluted rivers, and preparation method thereof |
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Application publication date: 20151125 |