CN106756976A - Silane compound and its application for chemical composition coating post processing - Google Patents
Silane compound and its application for chemical composition coating post processing Download PDFInfo
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- CN106756976A CN106756976A CN201611057302.8A CN201611057302A CN106756976A CN 106756976 A CN106756976 A CN 106756976A CN 201611057302 A CN201611057302 A CN 201611057302A CN 106756976 A CN106756976 A CN 106756976A
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- chemical composition
- silane compound
- acid
- composition coating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/82—After-treatment
- C23C22/83—Chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- Organic Chemistry (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of silane compound for chemical composition coating post processing and its application, the silane compound main component being made is silane coupler, organic acid, alcohol, Nano sol, balance of water, the compound can be used as the phosphatization of coated metal pre-treatment, chromaking, and zirconates treatment etc. various chemical composition coatings post-processing approach, the compound is flexible to chemical composition coating process time, need not be washed after treatment, naturally dry in the shade or heated-air drying, the hole of chemical composition coating can be reduced after being processed using the compound, improve its compactness, strengthen the naked film properties of chemical composition coating, promote metallic matrix and polyester-type, epoxy type, the adhesive force of various organic coatings such as acrylic type, so as to further improve every physicochemical property of organic coating.
Description
Technical field
It is more particularly to a kind of for locating after chemical composition coating the present invention relates to a kind for the treatment of technology of protecting metallic surface
The silane compound of reason and its application.
Technical background
Application is an important step in modern product manufacture, to improve metal works matrix and organic coating
Adhesion, being generally required before application carries out pre-treatment to metal works, and wherein phosphatization and chromaking is the conversion being widely used
Membrane technology, in recent years the nano ceramics zirconates conversion film of environment-friendly type be also constantly applied to coated metal pre-treatment.
Because phosphating coat is larger into membrane pores, its naked film corrosion strength is have impact on, or even just formed before application is dried yellow
Rust, therefore need to be to being once passivated Seal treatment after phosphatization, passivation can be played to phosphating coat and filled out frequently with Cr VI closing
Fill, oxidation, obtain the more stable phosphating coat of performance.Trivalent chromium turn into substitute sexavalence chromium passivating be often applied to aluminium and its
In the Coating Pretreatment of alloy material, there is no the Cr VI that can be oozed out in trivalent chromium passivation film, so film layer does not review one's lessons by oneself reactivation
Power, is easy to corrode when passivating film is damaged, and to make up this defect, it is also extremely necessary to increase Seal treatment operation.
Existing common sealing technique is all containing such as chromium, the harmful metal ion such as zinc or nickel.The present invention puts forward a kind of water
Property silane compound, processing method can be applied to the post processing of metal surface chemical composition coating as an alternative.
CN201310094796.7 employs a kind of silane systems of the anticorrosion post processing for the coat of metal, though the technique using
Water/alcohol system, but its major part be alcohols (>80%), the solvent-borne type silane systems cannot realize the rule of Treatment of Metal Surface
Modelling is produced and applied.
The content of the invention
It is multiple using the silane it is an object of the invention to provide a kind of silane compound for chemical composition coating post processing
Compound carries out post processing closing to the chemical composition coating that metal surface is formed, with following advantage：(1) water again need not be carried out
Wash；(2) aqueous, environmental protective, without chromium, the harmful metal ion such as zinc or nickel；(3) process time flexibly (0.1-10min), can be simultaneously
Suitable for spray and impregnation technology；(4) hole of chemical composition coating can be reduced after processing, improves its compactness, enhancing chemistry turns
Change the naked film properties of film, promote the adhesive force of various organic coatings such as metallic matrix and polyester-type, epoxy type, acrylic type, from
And further improve every physicochemical property of organic coating.
The technology of the present invention side is specific as follows：
For the preparation of the silane compound of chemical composition coating post processing, the mass percent content of constitutive material each component
For：
Preferably, the preparation method of the compound is：The pH value of water is adjusted to 1-6 with organic acid in advance, is then added
Enter water-soluble polymer stabilizer, after dissolving or being well mixed, the mixture of silane and alcohol is slowly added in water, and constantly
Stirring, chelating agent and auxiliary agent are added into after solution is clarified again, and are stirred, and finally supply excess water.
In advance toward water is added in stirred tank, it is 1-6 then to add organic acid and adjust its pH value；Silane coupler and alcohol are mixed
It is slowly added in above-mentioned water after closing uniformly, and is stirred continuously until solution clarification；Nano sol is finally added into, and supplies remaining
The water of amount.
Preferably, described silane is selected from one or more in following structural formula：R-Si-(OR′)n(n=1,2,3) ,-
The group that R is represented can be the one kind in alkyl, amino, epoxy radicals, urea groups, isocyanate group, alkene acyloxy, vinyl ,-OR ' tables
The group for showing is methoxyl group, ethyoxyl or acyloxy；
Preferably, described organic acid be selected from formic acid, acetic acid, hydroxyacetic acid, citric acid, oxalic acid, butanedioic acid, malic acid,
Tartaric acid, one or more in sulfonic acid；
Preferably, described alcohol is selected from methyl alcohol, ethanol, isopropanol, propane diols, methyl propanediol, the one kind in glycerine
Or it is several；
Preferably, described Nano sol is selected from nano silicon dioxide sol, nano titanic oxide sol, nanometer titanium dioxide
Zirconium colloidal sol, one or more in nano alumina sol.
The invention also discloses application of the described silane compound in protecting metallic surface.
The application optimum condition is：Silane compound is sprayed or soaked to the metal works for having carried out chemical conversion film process
Stain 0.1-10min；Naturally dry in the shade, relative air humidity is not higher than 80%, or heated-air drying, 80-120 DEG C of drying temperature exists
The silane film of compact structure is formed on the chemical composition coating on metal workpiece base material surface, can play anti-well to metal surface
Corrosiveness.
Metal works to being disposed carry out organic coating application, can improve every physicochemical property of organic coating.
Compared with the sealing technique of metal surface chemical composition coating compare, the present invention has following advantage：(1) nothing
Need to be washed again；(2) aqueous, environmental protective, without chromium, the harmful metal ion such as zinc or nickel；(3) flexible (0.1- of process time
10min), spray and impregnation technology can be simultaneously applied to；(4) hole of chemical composition coating can be reduced after processing, improves it fine and close
Property, strengthen the naked film properties of chemical composition coating, promote various organic paintings such as metallic matrix and polyester-type, epoxy type, acrylic type
The adhesive force of material, so as to further improve every physicochemical property of organic coating.
Specific embodiment
Embodiment 1：
A) in terms of 100 parts of weight, toward stirred tank in add 55 parts of water, it is 6 that 0.1 part of citric acid of addition adjusts its pH value；Will
It is slowly added into above-mentioned after 30 parts of 3- (2- aminoethylaminos) propyl-triethoxysilicane coupling agents and 5 parts of ethanol are well mixed
In water, and it is stirred continuously until solution clarification；Then 3 parts of colloidal silicas are added into, the water of surplus is finally supplied；
B) by step A) obtained in aqueous silane compound the iron and steel parts of Zinc phosphating are post-processed, using spray
Pouring mode, process time is 0.5min；Need not be washed after treatment；Heated-air drying, 120 DEG C of drying temperature are carried out before application；
C epoxy polyester mixed-powder application) is carried out to the iron and steel parts being disposed, the attachment of polyester coatings can be improved
Power is 0 grade；Impact resistance 50kgcm, coating is without cracking, peeling；The 500h of resistance to neutral salt spray test, unilateral corrosion diffusion≤
2m, other regions of coating are without defects such as bubbling peelings.
Embodiment 2：
A) in terms of 100 parts of weight, toward stirred tank in add 50 parts of water, it is 4 that 0.5 part of oxalic acid of addition adjusts its pH value；By 20
(wherein 3- (2,3- the third oxygen of epoxy) propyl trimethoxy silicane is 15 parts, 2- (3,4- 7-oxa-bicyclo[4.1.0 base) to part epoxy radicals silicone hydride
Ethyl trimethoxy silane is 5 parts) and be slowly added in above-mentioned water after 4 parts of glycerine are well mixed, and be stirred continuously up to
Solution is clarified；Then 0.2 part of nano zirconium dioxide colloidal sol is added into, the water of surplus is finally supplied；
B) by step A) obtained in aqueous silane compound the aluminium foil for having carried out trivalent chromium treatment is post-processed, use
Impregnation method, process time is 5min；Need not be washed after treatment；Carry out nature before application to dry in the shade, relative air humidity
75%；
C acrylic paint coating) is carried out to the aluminium foil being disposed, can improve polyester coatings draws 0 grade of lattice adhesive force；
Solvent resistant is cleaned coating and is well combined, without the bad phenomenon such as swelling；The secondary adhesive force of water boiling resistance experiment (80 DEG C of * 48h) is good,
Coating is without peeling, the defect such as come off.
Embodiment 3：
B) in terms of 100 parts of weight, toward stirred tank in add 60 parts of water, it is 1 that 0.4 part of methanesulfonic acid of addition adjusts its pH value；Will
10 alkyl silanes (n-propyl triethoxysilane is 7.5 parts, and dimethyldiethoxysilane is 2.5 parts) and 2 parts of ethanol mixing
It is slowly added in above-mentioned water after uniform, and is stirred continuously until solution clarification；Then 2.5 parts of nano silicons are added into molten
Glue, finally supplies the water of surplus；
B) by step A) obtained in aqueous silane compound the cold-rolled steel sheet for having carried out ferric solid-acid treatment is carried out after locate
Reason, using impregnation method, process time is 10s；Then 105 DEG C of hot-air seasonings are carried out in baking oven；
C constant temperature and moisture test (30 DEG C of * Rh90%*4h/16h/24h)) is carried out to the cold-rolled steel sheet test plate (panel) being disposed, is tried
Plate surface improves naked film barrier propterty without visible rust spot, after polyester epoxy powder application is carried out to test plate (panel), the attachment of its coating
Power is 0 grade.
Claims (7)
1. it is a kind of for chemical composition coating post processing silane compound, it is characterised in that：The quality hundred of constitutive material each component
Fraction is：
The preparation method of the silane compound is：The pH value of water is adjusted to 1-6 with organic acid in advance, by silane coupler and alcohol
Mixture be slowly added in water, and be stirred continuously, after being added into Nano sol again after solution clarification, and stir and obtain final product
For the silane compound of chemical composition coating post processing.
2. silane compound as claimed in claim 1, it is characterised in that described silane coupler is selected from following structural formula
One or more：R-Si-(OR′)n, wherein n=1,2,3；
The group that-R is represented is the one kind in alkyl, amino, epoxy radicals, urea groups, isocyanate group, alkene acyloxy, vinyl；
The group that-OR ' is represented is methoxyl group, ethyoxyl or acyloxy.
3. silane compound as claimed in claim 1, it is characterised in that described organic acid is silane hydrolyzate accelerator, is selected from
Formic acid, acetic acid, hydroxyacetic acid, citric acid, oxalic acid, butanedioic acid, malic acid, tartaric acid, one or more in sulfonic acid.
4. silane compound as claimed in claim 1, it is characterised in that described alcohol is selected from methyl alcohol, ethanol, isopropanol, the third two
Alcohol, methyl propanediol, one or more in glycerine.
5. silane compound as claimed in claim 1, it is characterised in that it is molten that described Nano sol is selected from nano silicon
Glue, nano titanic oxide sol, nano zirconium dioxide colloidal sol, one or more in nano alumina sol.
6. application of the silane compound described in claim 1 in protecting metallic surface, it is characterised in that for chemical conversion
The post processing of film, the chemical composition coating is selected from：Ferric solid-acid film, zinc phosphating film, sexavalence chromaking film, trivalent chromaking film, zirconium
Salt conversion film, the one kind in anode oxide film.
7. application as claimed in claim 6, it is characterised in that be to the treatment conditions that chemical composition coating is post-processed：Process time
It is 0.1-10min；Processing mode is for spray or impregnates, and need not be washed after treatment；To after chemical conversion film process in air
Relative humidity is dried in the shade or 80-120 DEG C of heated-air drying naturally under conditions of being not higher than 80%, i.e., form structure in metallic substrate surface
Fine and close silane film, protective action is played to metal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057302.8A CN106756976A (en) | 2016-11-26 | 2016-11-26 | Silane compound and its application for chemical composition coating post processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611057302.8A CN106756976A (en) | 2016-11-26 | 2016-11-26 | Silane compound and its application for chemical composition coating post processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106756976A true CN106756976A (en) | 2017-05-31 |
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ID=58911487
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611057302.8A Pending CN106756976A (en) | 2016-11-26 | 2016-11-26 | Silane compound and its application for chemical composition coating post processing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109666928A (en) * | 2018-12-24 | 2019-04-23 | 东莞理工学院 | A kind of protective coating of fastener and preparation method thereof and its application |
| CN110923685A (en) * | 2019-12-10 | 2020-03-27 | 湖州织里宝丰铝业有限公司 | Surface passivation treatment process for aluminum alloy profile |
| CN111663133A (en) * | 2019-03-06 | 2020-09-15 | 南京派诺金属表面处理技术有限公司 | Silane treatment fluid and preparation method thereof |
| CN112695314A (en) * | 2020-12-09 | 2021-04-23 | 内蒙古第一机械集团股份有限公司 | Solution for enhancing corrosion resistance of metal parts and preparation method thereof |
| CN113717547A (en) * | 2021-08-27 | 2021-11-30 | 湖北新蓝天新材料股份有限公司 | Silicification treating agent for pearlescent pigment and silicification method thereof |
| CN113718240A (en) * | 2021-08-18 | 2021-11-30 | 东风商用车有限公司 | Surface treatment method for magnesium alloy before painting |
| CN114196326A (en) * | 2021-12-11 | 2022-03-18 | 河南中恒美新材料有限公司 | Reagent for powder electrostatic spraying pretreatment and preparation process thereof |
| CN115821275A (en) * | 2022-07-15 | 2023-03-21 | 宁波吉海金属科技有限公司 | Normal-temperature acid pickling brightening solution for aviation aluminum tubes |
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| CN102181228A (en) * | 2011-04-15 | 2011-09-14 | 龚向光 | A metal surface silanization treatment agent and its surface silanization treatment process |
| CN103215630A (en) * | 2013-04-23 | 2013-07-24 | 沈阳理工大学 | Method for sealing aluminum alloy anode oxide film pore by adopting organic-inorganic composite silica sol |
| CN104130378A (en) * | 2014-08-13 | 2014-11-05 | 山东一诺威聚氨酯股份有限公司 | Silane modified double-component polyurethane plastic size for courts and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US2141575A (en) * | 1937-04-02 | 1938-12-27 | Warp Harold | Composition of matter |
| WO1997021845A3 (en) * | 1995-11-30 | 1997-08-14 | Henkel Corp | Chromate treatment bath composition and process for application to metals |
| CN102181228A (en) * | 2011-04-15 | 2011-09-14 | 龚向光 | A metal surface silanization treatment agent and its surface silanization treatment process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109666928A (en) * | 2018-12-24 | 2019-04-23 | 东莞理工学院 | A kind of protective coating of fastener and preparation method thereof and its application |
| CN111663133A (en) * | 2019-03-06 | 2020-09-15 | 南京派诺金属表面处理技术有限公司 | Silane treatment fluid and preparation method thereof |
| CN110923685A (en) * | 2019-12-10 | 2020-03-27 | 湖州织里宝丰铝业有限公司 | Surface passivation treatment process for aluminum alloy profile |
| CN112695314A (en) * | 2020-12-09 | 2021-04-23 | 内蒙古第一机械集团股份有限公司 | Solution for enhancing corrosion resistance of metal parts and preparation method thereof |
| CN113718240A (en) * | 2021-08-18 | 2021-11-30 | 东风商用车有限公司 | Surface treatment method for magnesium alloy before painting |
| CN113717547A (en) * | 2021-08-27 | 2021-11-30 | 湖北新蓝天新材料股份有限公司 | Silicification treating agent for pearlescent pigment and silicification method thereof |
| CN114196326A (en) * | 2021-12-11 | 2022-03-18 | 河南中恒美新材料有限公司 | Reagent for powder electrostatic spraying pretreatment and preparation process thereof |
| CN115821275A (en) * | 2022-07-15 | 2023-03-21 | 宁波吉海金属科技有限公司 | Normal-temperature acid pickling brightening solution for aviation aluminum tubes |
| CN115821275B (en) * | 2022-07-15 | 2025-01-28 | 宁波吉海金属科技有限公司 | A kind of room temperature pickling brightening liquid for aviation aluminum tube |
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