CN102101974A - Novel process for improving organic film treatment metal surface - Google Patents
Novel process for improving organic film treatment metal surface Download PDFInfo
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- CN102101974A CN102101974A CN2010105708884A CN201010570888A CN102101974A CN 102101974 A CN102101974 A CN 102101974A CN 2010105708884 A CN2010105708884 A CN 2010105708884A CN 201010570888 A CN201010570888 A CN 201010570888A CN 102101974 A CN102101974 A CN 102101974A
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- silane
- phytic acid
- film
- silanization
- metal surface
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a novel process for improving an organic film treatment metal surface, which relates to the technical field of metal surface anti-corrosive treatment. The process is characterized by consisting of the following steps of: introducing a condensation product of modified phytic acid and ethanol amine into a silylanization process of an electroplating and blackening process; forming a silylanization film and a protective film of the condensation product of the modified phytic acid and the ethanol amine on the metal surface; and when Si-OH in silane is condensed and a silane film with a Si-O-Si three-dimensional netlike structure is formed on the metal surface, jointing the condensation product of the modified phytic acid and the ethanol amine with a polar group through a covalent bond and embedding into the polar group so as to form a silane-phytic acid composite film. The corrosion resistance of the composite film is greatly enhanced, the hard water resistance is remarkably enhanced, the production cost is lowered; the composite film can be separately applied to anticorrosion treatment on metals; and the application and popularization of a technology become possible.
Description
Technical field:
The present invention relates to preservative treatment technology field, metallic surface, refer more particularly to a kind of novel process of improving the organic membrane process metal surfaces.
Background technology:
Traditional plating and blackening are to use protecting metallic surface treatment technology very widely, though its protection effect is remarkable, environmental pollution is serious, does not more and more meet present environmental requirement.Develop a circular economy, to improving resource utilization and building a resource-conserving and environment-friendly society significant.The resource minimizing, utilize again, recirculation is to carry out and implement recycling economy, three big fundamental principles of comprehensive utilization of resources and cleaner production also are that environmental pollution prevention and control turns to front-end control from end treatment, the inevitable requirement of the realization social economy strategy of sustainable development.
At present, the silanization technology is ripe gradually as a kind of metallic surface pretreatment technology of environmental protection, silanization does not contain harmful heavy metal and other objectionable constituent such as zinc, nickel in handling, and does not need nitrite promotor yet, thereby has avoided the harm to human body of nitrite and degradation production thereof.Silane treatment also is no slag.The slag processing cost is zero, reduces cost of equipment maintenance, and does not show technological processs such as accent, passivation, and less production stage and short treatment time help to improve the production capacity of factory, can shorten new production line, save facility investment and floor space.And working and room temperature, film forming is rapid, energy efficiency; Can be supporting with roads, various back processing modes, such as dusting, electrophoresis, spraying paint etc.This technology has now had higher industrial applications level.But silane film is thinner relatively, though can satisfy the service requirements of paint industries such as automobile, household electrical appliances, but the application in traditional plating and blackening still is very limited, and traditional silane finish is very high to the requirement of water, between film stage, water hardness is had very high requirement, be rich in Ca in case adopt
2+, Mg
2+Ionic hard water will have influence on the polycondensation of oligomeric silane, thereby has hindered the formation of covalent linkage, and the variation that links of silanization film and metallic surface easily comes off, and is difficult to play the effect of protection.Owing to need before the film forming liquid susceptibility stronger to hard water of silane treatment technology, sample enter in the film forming liquid thoroughly to clean with deionized water.But use the deionized water cost higher, this treatment technology is difficult to be accepted by vast businessman.Traditional silanization is handled the corrosion-resistant treatments that rete can not be applied to metal separately.
Summary of the invention:
The present invention is directed to the deficiency that above-mentioned traditional silicon alkanisation is handled, provide a kind of corrosion resistance good, can be applicable to the corrosion-resistant treatments of the independent protection of metal, and can use the novel process of improving the organic membrane process metal surfaces of hard water.
Improve the novel process of organic membrane process metal surfaces; it is characterized in that: in the silanization process of plating and blackening, introduce through the phytic acid of modification and the condenses of thanomin; form the protective membrane of silanization film and modification phytic acid thanomin condenses in the metallic surface; the mutual condensation of Si-OH in silane; form when having the silane film of Si-O-Si tridimensional network in the metallic surface; modification phytic acid thanomin condenses also combines with its polar group by covalent linkage and inlays wherein; thereby the mechanical property of reinforced film; reduce the structure hole of film, form fine and close more silane phytic acid composite membrane.
Above-mentioned silanization process is that to utilize the silanization technology be the metallic surface rotproofing of main film forming substance with the silane coupling agent.
Above-mentioned silanization technology main film forming substance is a silane coupling agent, and silane is that a class contains silica-based hybrid thing, and its basic molecular formula is: R ' (CH2)
nSi (OR)
3Wherein OR is hydrolyzable group, R ' is an organo-functional group, two kinds of different chemical functional groups, one end can generate covalent linkage in the hydroxyl reaction of inorganic material surface, the other end can generate covalent linkage with resin, thereby two kinds of very big materials of nature difference are combined, and plays the effect that improves the matrix material corrosion resistance.
The anti-hard water principle of silane phytic acid composite membrane:
Poly-hydroxy silane and the phytic acid generation condensation reaction of the present invention by containing specific groups, utilize on the one hand phytic acid effectively the characteristic of the calcium ions and magnesium ions in the complexing hard water effectively improve the anti-performance of hard water of silane treatment product; Improve the effective covalent linkage density of silane and matrix surface bonded on the other hand, thereby improve the corrosion resistance and the cohesive force of metal.
This composite film is handled rete than simple silanization, not only corrosion resistance is greatly improved, can be successfully applied to the corrosion-resistant treatments of the independent protection of metal, and need not deionized water, can directly use hard water that sample is cleaned, reduce production cost significantly, made this The Application of Technology become possibility with popularizing.
Embodiment:
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Embodiment one:
Improve the novel process of organic membrane process metal surfaces; in the silanization process of metallic surface preservative treatment technology that with the silane coupling agent is main film forming substance, introduce through the phytic acid of modification and the condenses of thanomin; form the protective membrane of silanization film and modification phytic acid thanomin condenses in the metallic surface; the mutual condensation of Si-OH in silane; form when having the silane film of Si-O-Si tridimensional network in the metallic surface; modification phytic acid thanomin condenses also combines with its polar group by covalent linkage and inlays wherein; thereby the mechanical property of reinforced film; reduce the structure hole of film, form fine and close more silane phytic acid composite membrane.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in the foregoing description and the specification sheets only is preference of the present invention; be not used for limiting the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. improve the novel process of organic membrane process metal surfaces; it is characterized in that: in the silanization process of plating and blackening, introduce through the phytic acid of modification and the condenses of thanomin; form the protective membrane of silanization film and modification phytic acid thanomin condenses in the metallic surface; the mutual condensation of Si-OH in silane; form when having the silane film of Si-O-Si tridimensional network in the metallic surface; modification phytic acid thanomin condenses also combines with its polar group by covalent linkage and inlays wherein, forms silane phytic acid composite membrane.
2. the novel process of improving the organic membrane process metal surfaces according to claim 1 is characterized in that: above-mentioned silanization process is that to utilize the silanization technology be the metallic surface rotproofing of main film forming substance with the silane coupling agent.
3. the novel process of improving the organic membrane process metal surfaces according to claim 2, it is characterized in that: above-mentioned silanization technology main film forming substance is a silane coupling agent, silane is that a class contains silica-based hybrid thing, and its basic molecular formula is: R ' (CH2)
nSi (OR)
3Wherein OR is hydrolyzable group, R ' is an organo-functional group, two kinds of different chemical functional groups, one end can generate covalent linkage in the hydroxyl reaction of inorganic material surface, the other end can generate covalent linkage with resin, thereby two kinds of very big materials of nature difference are combined, and plays the effect that improves the matrix material corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105708884A CN102101974A (en) | 2010-12-02 | 2010-12-02 | Novel process for improving organic film treatment metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105708884A CN102101974A (en) | 2010-12-02 | 2010-12-02 | Novel process for improving organic film treatment metal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102101974A true CN102101974A (en) | 2011-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105708884A Pending CN102101974A (en) | 2010-12-02 | 2010-12-02 | Novel process for improving organic film treatment metal surface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534601A (en) * | 2011-12-28 | 2012-07-04 | 蚌埠市钰诚五金工贸有限公司 | Preparation process of metal surface protective treatment solution |
| CN102560469A (en) * | 2011-12-29 | 2012-07-11 | 蚌埠市钰诚五金工贸有限公司 | Metal surface silylation protection treating agent |
| CN102560465A (en) * | 2011-12-28 | 2012-07-11 | 蚌埠市钰诚五金工贸有限公司 | Metal surface protection pre-processing process |
| CN102605365A (en) * | 2011-12-29 | 2012-07-25 | 蚌埠市钰诚五金工贸有限公司 | Protecting-treating technology for metal surface |
-
2010
- 2010-12-02 CN CN2010105708884A patent/CN102101974A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534601A (en) * | 2011-12-28 | 2012-07-04 | 蚌埠市钰诚五金工贸有限公司 | Preparation process of metal surface protective treatment solution |
| CN102560465A (en) * | 2011-12-28 | 2012-07-11 | 蚌埠市钰诚五金工贸有限公司 | Metal surface protection pre-processing process |
| CN102560465B (en) * | 2011-12-28 | 2015-08-05 | 蚌埠市钰诚五金工贸有限公司 | A kind of metal surface protection pre-processing process |
| CN102560469A (en) * | 2011-12-29 | 2012-07-11 | 蚌埠市钰诚五金工贸有限公司 | Metal surface silylation protection treating agent |
| CN102605365A (en) * | 2011-12-29 | 2012-07-25 | 蚌埠市钰诚五金工贸有限公司 | Protecting-treating technology for metal surface |
| CN102605365B (en) * | 2011-12-29 | 2015-03-04 | 蚌埠市钰诚五金工贸有限公司 | Protecting-treating technology for metal surface |
| CN102560469B (en) * | 2011-12-29 | 2015-07-22 | 蚌埠市钰诚五金工贸有限公司 | Metal surface silylation protection treating agent |
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Application publication date: 20110622 |