CN104059495B - Chromium-free passivation liquid and its production and use and metal material - Google Patents
Chromium-free passivation liquid and its production and use and metal material Download PDFInfo
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Abstract
The preparation method that the invention provides a kind of chromium-free passivation liquid, the method includes water, silane coupler, water-soluble silicate, accelerator, cilicon oxide filler and water-soluble film-forming resin successively mix homogeneously. Present invention also offers the chromium-free passivation liquid and above-mentioned chromium-free passivation liquid purposes in preparing metal material that prepare according to preparation method as above. Present invention also offers a kind of metal material, this metal material includes metal base and the coating being attached on this metal base, and described coating is the cured product of chromium-free passivation liquid as above. The corrosion resistance of the protecting film that chromium-free passivation liquid provided by the invention is formed is very excellent. Additionally, the storage endurance of chromium-free passivation liquid provided by the invention is very excellent, can at room temperature store 180 days after preparation completes and not occur obvious character to change and hydraulic performance decline.
Description
Technical field
The present invention relates to metal protection field, in particular it relates to the purposes of the preparation method of a kind of chromium-free passivation liquid, this preparation method chromium-free passivation liquid obtained, this chromium-free passivation liquid and metal material.
Background technology
Metal material, including hot-dip galvanized metal material and hot-dip aluminizing zinc metal material, in order to prevent corrosion, all can apply a layer Cr-free passivation liquid to form protecting film on the surface of metal material. Thus the performance of chromium-free passivation liquid is particularly significant for the anti-corrosion of metal material.
Such as, CN101608306A discloses a kind of passivating solution, falls within a kind of chromium-free passivation liquid, it is characterized in that, this passivating solution is the aqueous solution containing water-soluble molybdenum compound, boric acid, water soluble organic substance and Ludox, and wherein, described water soluble organic substance is the mixture of alcohol and organic carboxyl acid.
But it is demonstrated experimentally that the corrosion resistance of the protecting film of this chromium-free passivation liquid formation is still poor.
Summary of the invention
The defect that the corrosion resistance of the protecting film that it is an object of the invention to overcome existing chromium-free passivation liquid to be formed is poor, it is provided that a kind of chromium-free passivation liquid that can form the good protecting film of corrosion resistance.
To achieve these goals, the preparation method that the invention provides a kind of chromium-free passivation liquid, the method includes water, silane coupler, water-soluble silicate, accelerator, cilicon oxide filler and water-soluble film-forming resin successively mix homogeneously; Described silane coupler is CH2=C(CH3)COO(CH2)3Si(OCH3)3、CH2=C(CH3)COO(CH2)3Si(OC2H5)3、CH2=C(CH3)COO(CH2)3SiCH3(OCH3)2And CH2=C(CH3)COO(CH2)3SiCH3(OC2H5)2In at least one; Described accelerator is thiourea and/or carbamide.
Present invention also offers the chromium-free passivation liquid prepared according to preparation method as above.
Present invention also offers above-mentioned chromium-free passivation liquid purposes in preparing metal material.
Present invention also offers a kind of metal material, this metal material includes metal base and the coating being attached on this metal base, described metal base is at least one in galvanizing metal base, hot-dip aluminizing zinc metal base and hot-dip aluminizing zinc magnesium metal base material, it is characterized in that, described coating is the cured product of chromium-free passivation liquid as above.
By technique scheme, the corrosion resistance of the protecting film that chromium-free passivation liquid provided by the invention is formed is very excellent. Additionally, the storage endurance of chromium-free passivation liquid provided by the invention is very excellent, can at room temperature store 180 days after preparation completes and not occur obvious character to change and hydraulic performance decline.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the specific embodiment of the present invention is described in detail. It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
The preparation method that the invention provides a kind of chromium-free passivation liquid, the method includes water, silane coupler, water-soluble silicate, accelerator, cilicon oxide filler and water-soluble film-forming resin successively mix homogeneously; Described silane coupler is CH2=C(CH3)COO(CH2)3Si(OCH3)3、CH2=C(CH3)COO(CH2)3Si(OC2H5)3、CH2=C(CH3)COO(CH2)3SiCH3(OCH3)2And CH2=C(CH3)COO(CH2)3SiCH3(OC2H5)2In at least one; Described accelerator is thiourea and/or carbamide.
Wherein, in detail, the method includes: (1), by water and described silane coupler mix homogeneously, obtains uniform liquid A; (2) by described uniform liquid A and water-soluble silicate mix homogeneously, uniform liquid B is obtained; (3) by described uniform liquid B and accelerator mix homogeneously, uniform liquid C is obtained; (4) by described uniform liquid C and cilicon oxide filler mix homogeneously, uniform liquid D is obtained; (5) described uniform liquid D is mixed homogeneously with water-soluble film-forming resin, obtain uniform liquid E. Wherein, there is no particular limitation for the method for mix homogeneously, as long as uniform stablizing mutually can be obtained, it is preferable that make mixing more uniform by stirring.
Preparation method according to chromium-free passivation liquid provided by the invention, wherein, relative to the described water-soluble silicate of 1 weight portion, the consumption of described silane coupler can be 0.5-4.5 weight portion, it is preferred to 1.4-1.8 weight portion.
Wherein, relative to the described water-soluble silicate of 1 weight portion, the consumption of described accelerator can be 0.2-1.8 weight portion, it is preferred to 0.5-0.7 weight portion.
Wherein, relative to the described water-soluble silicate of 1 weight portion, the consumption of described cilicon oxide filler can be 0.25-2.2 weight portion, it is preferred to 0.6-0.85 weight portion.
Wherein, relative to the described water-soluble silicate of 1 weight portion, in solid, the consumption of described water-soluble film-forming resin can be 0.8-6.8 weight portion, it is preferred to 2.1-2.7 weight portion. Herein solid be used for calculating or representing that the solid implication of solid content is identical, be water-soluble film-forming resin and remove remaining composition after solvent.
Wherein, relative to the described water-soluble silicate of 1 weight portion, the consumption of water is 10-100 weight portion, it is preferred to 25-40 weight portion. It should be noted that the consumption of water described in the present invention refers to the amount of the additionally water of interpolation, do not include in above-mentioned other component added with solution or emulsion mode with the amount of water.
Preparation method according to chromium-free passivation liquid provided by the invention, wherein, described silane coupler is CH2=C(CH3)COO(CH2)3Si(OCH3)3、CH2=C(CH3)COO(CH2)3Si(OC2H5)3、CH2=C(CH3)COO(CH2)3SiCH3(OCH3)2And CH2=C(CH3)COO(CH2)3SiCH3(OC2H5)2In at least one. Wherein, CH2=C(CH3)COO(CH2)3Si(OCH3)3(being called γ-methacryloxypropyl trimethoxy silane), CH2=C(CH3)COO(CH2)3Si(OC2H5)3(being called γ-methacryloxypropyl), CH2=C(CH3)COO(CH2)3SiCH3(OCH3)2(being called γ-methacryloyloxypropyl methyl dimethoxysilane) and CH2=C(CH3)COO(CH2)3SiCH3(OC2H5)2(being called γ-methacryloyloxypropyl methyl diethoxy silane) can serve as silane coupler, the commercially available commodity shown in various above-mentioned chemical formula that can be used as silane coupler may be used to the present invention, such as purchased from the commercially available product that the trade mark of Debang Chemical New Material Co., Ltd. is DB-570, DB-571 and DB-572, and the commercially available product that the trade mark is Luer-1512 purchased from Rule, Shanghai Chemical trade company limited.Wherein, it is preferable that described silane coupler is CH2=C(CH3)COO(CH2)3Si(OCH3)3。
Preparation method according to chromium-free passivation liquid provided by the invention, wherein, described water-soluble silicate can be sodium silicate and/or potassium silicate. Described sodium silicate can be at least one in anhydrous sodium metasilicate, SODIUM METASILICATE PENTAHYDRATE and nine water sodium silicate. Further, the consumption of described water-soluble silicate is to calculate with the gauge of anhydrous silicate.
Preparation method according to chromium-free passivation liquid provided by the invention, wherein, described cilicon oxide filler does not have special requirement, it is possible to for the various fillers based on silicon oxide, such as, described cilicon oxide filler can be nano-silica powder and/or nano silicon dioxide sol; Under preferable case, the particle diameter of the silicon oxide in described cilicon oxide filler can be 5-90nm, it is more preferably 5-30nm, such as, the commercially available product that the trade mark is AT-30, AT-30S, AT-40, AT-30A and AT-20 purchased from Asahi Denka Co., Ltd. or the commercially available product that the trade mark is SS-25 and SS-30 purchased from Shandong Bai Te new material company limited can be used. And, the consumption of cilicon oxide filler is to calculate with the weight of silicon oxide itself, the consumption of such as nano silicon dioxide sol is to calculate with the gauge of the silicon dioxide in colloidal sol, the numerical computations obtained after being namely multiplied by its dioxide-containing silica percent (weight) with the weight of nano silicon dioxide sol.
Preparation method according to chromium-free passivation liquid provided by the invention, wherein, described water-soluble film-forming resin can be various water miscible and can be used in the modified of film forming or unmodified resin, described resin can use with suitable object form, such as water-soluble emulsion, at least one in water-soluble solution and water-soluble solid, the not special requirement of the present invention, as long as can be used in film forming, such as, described water-soluble film-forming resin can be the water-soluble polyester film-forming resin (water-soluble film-forming resin namely obtained by polyalcohols monomer and polynary acids monomer polymerization, such as purchased from Guangzhou Lapo Fine Chemicals Co., Ltd., the polyester resin of trade mark CB2200), the water solublity phenylpropyl alcohol film-forming resin (water-soluble film-forming resin namely obtained by styrene monomer and acrylic acid (ester) class monomer polymerization, such as purchased from Guangzhou Chao Long Chemical Industry Science Co., Ltd, the trade mark is the styrene-acrylic emulsion of xy-108b), soluble epoxide film-forming resin (the water-soluble film-forming resin namely obtained by the monomer polymerization containing epoxy radicals, such as purchased from Dongguan City Heima Chemical Co., Ltd., the trade mark is the epoxy resin of BH620), soluble polyurethane film-forming resin (the water-soluble film-forming resin namely obtained by multicomponent isocyanate class monomer and multi-hydroxy compounds monomer polymerization, such as purchased from Jinjiang, Fujian Province Jian Hua company, the polyurethane resin of the trade mark 812), water-soluble silicon the third film-forming resin (water-soluble film-forming resin namely obtained by silicone based monomer and acrylic acid (ester) class monomer polymerization, make the country prosperous paint company TC-05 type silicone acrylic emulsion in such as Qingdao, solid content is 48 weight %), water-soluble acrylic film-forming resin (the water-soluble film-forming resin namely obtained by acrylic acid (ester) class monomer polymerization, such as purchased from the acrylic resin that the trade mark is A-3418 of Guangzhou Ou Peng chemical industry) and the water-soluble fluorine carbon film-forming resin (water-soluble film-forming resin namely obtained by fluorinated monomer polymerization, such as purchased from Beijing Shouchuang Nano Techn Co., Ltd., the trade mark is the water-base fluorocarbon emulsion of SKFT-I) at least one,Under preferable case, described water-soluble film-forming resin is at least one in water solublity phenylpropyl alcohol film-forming resin, soluble epoxide film-forming resin, water-soluble silicon the third film-forming resin, water-soluble acrylic film-forming resin, soluble polyurethane film-forming resin and water-soluble polyester film-forming resin. It is highly preferred that wherein, described water-soluble silicon the third film-forming resin is Silomer8861 emulsion (purchased from RichdaleSpecialChemicalsInc., Rui De special chemical company).
Preparation method according to chromium-free passivation liquid provided by the invention, wherein, in order to improve the greasy property of the protecting film of formation further, under preferable case, this preparation method also includes: mixed homogeneously with lubricating auxiliary agent by the material after water and silane coupler mix homogeneously, and described lubricating auxiliary agent is one or more in the water-based emulsion of dimethicone, polyether-modified polysiloxanes, the water-based emulsion of Tissuemat E and the water-based emulsion of OPE.
It is highly preferred that relative to the described water-soluble silicate of 1 weight portion, the content of described lubricating auxiliary agent is 0.2-1.8 weight portion, more preferably 0.5-0.7 weight portion.
Wherein, the solid content of the water-based emulsion of described dimethicone can be 10-90 weight %, it is preferred to 30-80 weight %. It should be noted that the water-based emulsion of dimethicone is when being used for preparing chromium-free passivation liquid provided by the invention, its consumption refers to the numerical value that the gross weight of water-based emulsion obtains after being multiplied by its solid content. It should be noted that the solid content of the water-based emulsion of described dimethicone refers to the content of the dimethicone used by the water-based emulsion preparing described dimethicone. Described dimethicone refers to water-insoluble unmodified dimethicone.
Wherein, the dimethyl-silicon oil viscosity in the water-based emulsion of described dimethicone can be 500-50000mPa s, it is preferred to 1000-40000mPa s, more preferably 1500-30000mPa s.
Wherein, described polyether-modified polysiloxanes is commonly called as water-soluble dimethyl silicone oil, and existing various water-soluble dimethyl silicone oil all can be used for realizing the purpose of the present invention as described lubricating auxiliary agent in the present invention. Preferred described polyether-modified polysiloxanes is viscosity is 100-10000mPa s, it is preferred to 500-8000mPa s, more preferably 1000-6000mPa s, is further preferably the water-soluble dimethyl silicone oil of 2000-5000mPa s.
It should be noted that when not doing contrary explanation in the present invention, described viscosity refers to the apparent viscosity numerical value recorded at 25 DEG C.
Wherein, the water-based emulsion of described Tissuemat E can be the water-based emulsion that conventionally will obtain after Tissuemat E emulsifying, and the solid content of the water-based emulsion of described Tissuemat E can be 30-60 weight %, it is preferred to 40-50 weight %. It should be noted that the water-based emulsion of Tissuemat E is when being used for preparing chromium-free passivation liquid provided by the invention, its consumption refers to the numerical value that the gross weight of water-based emulsion obtains after being multiplied by its solid content.
Wherein, the fusing point of the Tissuemat E in the water-based emulsion of described Tissuemat E can be 90-130 DEG C, it is preferred to 100-120 DEG C, more preferably 105-115 DEG C.
Wherein, the water-based emulsion of described OPE can be the water-based emulsion that conventionally will obtain after OPE emulsifying, and the solid content of the water-based emulsion of described OPE can be 30-60 weight %, it is preferred to 40-50 weight %.It should be noted that the water-based emulsion of OPE is when being used for preparing chromium-free passivation liquid provided by the invention, its consumption refers to the numerical value that the gross weight of water-based emulsion obtains after being multiplied by its solid content.
Wherein, the fusing point of the OPE in the water-based emulsion of described OPE can be 80-120 DEG C, it is preferred to 90-115 DEG C, more preferably 100-110 DEG C.
It should be noted that when not making contrary explanation in the present invention, the fusing point of Tissuemat E and OPE refers to the numerical value that the mensuration according to GB/T2539-2008 pertroleum wax fusing point-cooling curve method measures.
Wherein, the acid number of the OPE in the water-based emulsion of described OPE can be 5-60mgKOH/g, it is preferred to 10-50mgKOH/g. Wherein, described acid number is the numerical value measured according to GB/T264-83 petroleum product acid value measuring method.
Present invention also offers the chromium-free passivation liquid prepared according to preparation method as above. Wherein, preparation method as above obtains add water-soluble film-forming resin mix homogeneously after material (that is, the uniform liquid E obtained) may act as the present invention chromium-free passivation liquid use.
Additionally, the chromium-free passivation liquid of the present invention can also contain other various components not affecting chromium-free passivation liquid character, one or more in dyestuff, pigment, dispersant and defoamer. With the gross weight of this chromium-free passivation liquid for benchmark, the content of other component is less than 20 weight %, it is preferable that less than 10 weight %. Described defoamer can be various defoamer well known in the art, for instance one or more in polyethers defoamer, high-carbon alcohol defoaming agent and silicon class defoamer etc. More specifically, described defoamer can be one or more in the SD-401 series defoamer commercially available from such as Co., Ltd of Dongying dan big Creative Science and Technology Co. Ltd. Under preferable case, with the total amount of described chromium-free passivation liquid for benchmark, the content of described defoamer is 0.01-0.05 weight %.
Correspondingly, the preparation method of chromium-free passivation liquid provided by the invention can also include the step that adds other various components not affecting chromium-free passivation liquid character mix homogeneously. These other various components not affecting chromium-free passivation liquid character can add after adding water-soluble film-forming resin.
The chromium-free passivation liquid of the present invention can directly use without dilution.
Present invention also offers above-mentioned chromium-free passivation liquid purposes in preparing metal material. Above-mentioned chromium-free passivation liquid can be used for preparing various metal material in the way of this area is conventional.
According to metal material provided by the invention, this metal material includes galvanizing metal base and the coating being attached on this metal base, described metal base is at least one in galvanizing metal base, hot-dip aluminizing zinc metal base and hot-dip aluminizing zinc magnesium metal base material, it is characterized in that, described coating is the cured product of chromium-free passivation liquid as above.
Wherein, described galvanizing metal base can be the metal base containing zinc coating, and in described zinc coating, the content of zinc can be 92.5-95.5 weight %. Described zinc coating also can contain other conventional ingredient, such as silicon.
Wherein, described hot-dip aluminizing zinc metal base can be the metal base containing zinc-aluminium coating, and in described zinc-aluminium coating, the content of zinc can be 41.5-43.5 weight %, and the content of aluminum can be 51.5-55.0 weight %. Described zinc-aluminium coating also can contain other conventional ingredient, such as silicon.
Wherein, hot-dip aluminizing zinc magnesium metal base material can be the metal base containing aluminum zinc-magnesium coating, and in described aluminum zinc-magnesium coating, the content of zinc can be 85.5-99.2 weight %, and the content of aluminum can be 0.2-11 weight %, and the content of magnesium can be 0.5-3 weight %.Described aluminum zinc-magnesium coating also can contain other conventional ingredient, such as silicon.
According to metal material provided by the invention, wherein, the thickness of described coating can be the general thickness of the erosion shield on metal base, in order to improve the performance of described coating, under preferable case, the thickness of described coating is 0.05-2 micron, it is preferable that can be 0.1-1 micron. Wherein, the thickness of coating is to use XRF(fluorescence spectrophotometer) measuring instrument measure numerical value.
According to metal material provided by the invention, wherein, the method adhering to described coating on metal base can include being attached on the surface of metal base by described chromium-free passivation liquid, then dry, dry temperature can be 60-120 DEG C, it is preferred to 90-110 DEG C, the time can be the 0.5-3 second. The consumption of described chromium-free passivation liquid can be determined according to the thickness of coating.
Wherein, described dry method, it is possible to for one or more in hot air drying, sensing heating and infrared radiation heating.
In the present invention, when not doing contrary explanation, the volume of all liq and solid refers both to 20 DEG C, the volume of 1 standard atmosphere pressure.
Hereinafter by embodiment, the present invention will be explained in further detail.
Embodiment 1
By the silane coupler (CH of the water of 28 weight portions and 1.6 weight portions2=C(CH3)COO(CH2)3Si(OCH3)3, purchased from Debang Chemical New Material Co., Ltd., trade mark DB-570) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid A.
The water-soluble silicate (metasilicate pentahydrate sodium, purchased from Qingdao great Run Chemical Co., Ltd.) of whole uniform liquid A and 1 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid B.
The accelerator (thiourea) of whole uniform liquid B and 0.6 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid C.
Cilicon oxide filler (nano silicon dioxide sol by whole uniform liquid C and 0.72 weight portion, purchased from Shandong Bai Te new material company limited, the trade mark is SS-30, and weight is in silicon dioxide) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid D.
By the water-soluble film-forming resin of whole uniform liquid D and 2.4 weight portions (in solid), ((Silomer8861 emulsion is (purchased from RichdaleSpecialChemicalsInc. for water-soluble silicon the third film-forming resin, Rui De special chemical company, solid content is 43 weight %))) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid E. Uniform liquid E is the chromium-free passivation liquid of the present embodiment.
Comparative example 1
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, the container that mixing is used is first simultaneously introduced water, silane coupler, water-soluble silicate, accelerator, cilicon oxide filler and water-soluble film-forming resin, under the mixing speed of 1500 revs/min, mixing, to uniformly, obtains the chromium-free passivation liquid of this comparative example again.
Comparative example 2
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, by water, water-soluble film-forming resin, water-soluble silicate, accelerator, cilicon oxide filler and silane coupler successively mix homogeneously, obtain the chromium-free passivation liquid of this comparative example. That is, the application of sample order of silane coupler and water-soluble film-forming resin is exchanged.
Comparative example 3
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, by water, silane coupler, cilicon oxide filler, accelerator, water-soluble silicate and water-soluble film-forming resin successively mix homogeneously, obtain the chromium-free passivation liquid of this comparative example. That is, the application of sample order of water-soluble silicate and cilicon oxide filler is exchanged.
Embodiment 2
By the silane coupler (CH of the water of 25 weight portions and 1.4 weight portions2=C(CH3)COO(CH2)3Si(OCH3)3, purchased from Debang Chemical New Material Co., Ltd., trade mark DB-570) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid A.
The water-soluble silicate (potassium silicate, purchased from Baoding Run Feng Industrial Co., Ltd.) of whole uniform liquid A and 1 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid B.
By the accelerator of whole uniform liquid B and 0.5 weight portion (thiourea and carbamide etc. weight mixture) under the mixing speed of 1500 revs/min mixing to uniformly, obtaining uniform liquid C.
The cilicon oxide filler (nano silicon dioxide sol, purchased from Asahi Denka Co., Ltd., the trade mark is AT-30, and weight is in silicon dioxide) of whole uniform liquid C and 0.6 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid D.
By the water-soluble film-forming resin of whole uniform liquid D and 2.1 weight portions (in solid), ((Silomer8861 emulsion is (purchased from RichdaleSpecialChemicalsInc. for water-soluble silicon the third film-forming resin, Rui De special chemical company, solid content is 43 weight %))) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid E. Uniform liquid E is the chromium-free passivation liquid of the present embodiment.
Embodiment 3
By the silane coupler (CH of the water of 40 weight portions and 1.8 weight portions2=C(CH3)COO(CH2)3Si(OCH3)3, purchased from Debang Chemical New Material Co., Ltd., trade mark DB-570) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid A.
The water-soluble silicate (metasilicate pentahydrate sodium, purchased from Qingdao great Run Chemical Co., Ltd.) of whole uniform liquid A and 1 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid B.
The accelerator (carbamide) of whole uniform liquid B and 0.7 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid C.
The cilicon oxide filler (nano silicon dioxide sol, purchased from Asahi Denka Co., Ltd., the trade mark is AT-30, and weight is in silicon dioxide) of whole uniform liquid C and 0.85 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid D.
By the water-soluble film-forming resin of whole uniform liquid D and 2.7 weight portions (in solid), ((Silomer8861 emulsion is (purchased from RichdaleSpecialChemicalsInc. for water-soluble silicon the third film-forming resin, Rui De special chemical company, solid content is 43 weight %))) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid E. Uniform liquid E is the chromium-free passivation liquid of the present embodiment.
Embodiment 4
By the silane coupler (CH of the water of 90 weight portions and 0.6 weight portion2=C(CH3)COO(CH2)3Si(OCH3)3, purchased from Debang Chemical New Material Co., Ltd., trade mark DB-570) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid A.
The water-soluble silicate (metasilicate pentahydrate sodium, purchased from Qingdao great Run Chemical Co., Ltd.) of whole uniform liquid A and 1 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid B.
The accelerator (thiourea) of whole uniform liquid B and 0.3 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid C.
Cilicon oxide filler (nano silicon dioxide sol by whole uniform liquid C and 2.1 weight portions, purchased from Shandong Bai Te new material company limited, the trade mark is SS-30, and weight is in silicon dioxide) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid D.
By the water-soluble film-forming resin of whole uniform liquid D and 6.5 weight portions (in solid), ((Silomer8861 emulsion is (purchased from RichdaleSpecialChemicalsInc. for water-soluble silicon the third film-forming resin, Rui De special chemical company, solid content is 43 weight %))) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid E. Uniform liquid E is the chromium-free passivation liquid of the present embodiment.
Embodiment 5
By the silane coupler (CH of the water of 15 weight portions and 4.5 weight portions2=C(CH3)COO(CH2)3Si(OCH3)3, purchased from Debang Chemical New Material Co., Ltd., trade mark DB-570) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid A.
The water-soluble silicate (metasilicate pentahydrate sodium, purchased from Qingdao great Run Chemical Co., Ltd.) of whole uniform liquid A and 1 weight portion is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid B.
The accelerator (thiourea) of whole uniform liquid B and 1.7 weight portions is mixed under the mixing speed of 1500 revs/min to uniformly, obtain uniform liquid C.
Cilicon oxide filler (nano silicon dioxide sol by whole uniform liquid C and 0.3 weight portion, purchased from Shandong Bai Te new material company limited, the trade mark is SS-30, and weight is in silicon dioxide) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid D.
By the water-soluble film-forming resin of whole uniform liquid D and 1.0 weight portions (in solid), ((Silomer8861 emulsion is (purchased from RichdaleSpecialChemicalsInc. for water-soluble silicon the third film-forming resin, Rui De special chemical company, solid content is 43 weight %))) mix to uniformly under the mixing speed of 1500 revs/min, obtain uniform liquid E. Uniform liquid E is the chromium-free passivation liquid of the present embodiment.
Embodiment 6
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, silane coupler is CH2=C(CH3)COO(CH2)3Si(OC2H5)3(purchased from Debang Chemical New Material Co., Ltd., trade mark DB-572).
Embodiment 7
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, silane coupler is CH2=C(CH3)COO(CH2)3SiCH3(OCH3)2(purchased from Debang Chemical New Material Co., Ltd., trade mark DB-571).
Embodiment 8
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, silane coupler is CH2=C(CH3)COO(CH2)3SiCH3(OC2H5)2(purchased from Rule, Shanghai Chemical trade company limited, trade mark Luer-1512).
Embodiment 9
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, (make the country prosperous paint company TC-05 type silicone acrylic emulsion in Qingdao to use water-soluble silicon the third film-forming resin, solid content is 48 weight %) as water-soluble film-forming resin, and (obtaining the material after water and silane coupler mix homogeneously adds lubricating auxiliary agent after the 1:1 mixing by weight of the water-based emulsion of dimethicone and polyether-modified polysiloxanes, the water-based emulsion of dimethicone is purchased from Nanjing Hua Tuo Chemical Co., Ltd., the trade mark is HTR-1, solid content is 30 weight %, it is obtained by after the dimethicone emulsifying that the apparent viscosity at 25 DEG C is 25000mPa S, polyether-modified polysiloxanes is purchased from the grand dyeing and finishing auxiliaries for textile Co., Ltd., Factory in Dongguan, and the apparent viscosity at 25 DEG C is 3000mPa S) and mix homogeneously, wherein, relative to the water-soluble silicate of 1 weight portion, the consumption of lubricating auxiliary agent is 0.6 weight portion.
Embodiment 10
Chromium-free passivation liquid is prepared according to the method for embodiment 9, the difference is that, without lubricating auxiliary agent.
Embodiment 11
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, use water solublity phenylpropyl alcohol film-forming resin (purchased from Guangzhou Chao Long Chemical Industry Science Co., Ltd, the trade mark is the styrene-acrylic emulsion of xy-108b) as water-soluble film-forming resin, and (obtaining the material after water and silane coupler mix homogeneously adds lubricating auxiliary agent after the 1:1 mixing by weight of the water-based emulsion of Tissuemat E and the water-based emulsion of OPE, the water-based emulsion of Tissuemat E is purchased from Dongguan City Hong Guang plastic material business department, solid content is 48 weight %, the fusing point of Tissuemat E is 110-115 DEG C,The water-based emulsion of OPE is purchased from Beijing Zhong Guan special wax company limited, solid content is 48 weight %, the fusing point of OPE is 105-110 DEG C, acid number is 14-21mgKOH/g) and mix homogeneously, wherein, relative to the water-soluble silicate of 1 weight portion, the consumption of lubricating auxiliary agent is 0.5 weight portion.
Embodiment 12
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, use soluble epoxide film-forming resin (purchased from Dongguan City Heima Chemical Co., Ltd., the trade mark is the aqueous epoxy resin emulsion of BH620) as water-soluble film-forming resin, and the material after water and silane coupler mix homogeneously will add the lubricating auxiliary agent (water-based emulsion of dimethicone, purchased from Guangzhou Si Luoke Chemical Co., Ltd., solid content is 80 weight %, it is obtained by after the dimethicone emulsifying that the apparent viscosity at 25 DEG C is 1500mPa S) and mix homogeneously, wherein, water-soluble silicate relative to 1 weight portion, the consumption of lubricating auxiliary agent is 0.7 weight portion.
Embodiment 13
Chromium-free passivation liquid is prepared according to the method for embodiment 1, the difference is that, use water-soluble polyester film-forming resin (purchased from Yancheng, Jiangsu Province Ju Ke Chemical Co., Ltd., the trade mark is the waterborne polyester of PE-10030-P) as water-soluble film-forming resin, and the material after water and silane coupler mix homogeneously will add the lubricating auxiliary agent (water-based emulsion of dimethicone, purchased from Guangzhou Si Luoke Chemical Co., Ltd., solid content is 80 weight %, it is obtained by after the dimethicone emulsifying that the apparent viscosity at 25 DEG C is 1500mPa S) and mix homogeneously, wherein, water-soluble silicate relative to 1 weight portion, the consumption of lubricating auxiliary agent is 0.7 weight portion.
Preparation embodiment 1
The chromium-free passivation liquid that Example 1-13 and comparative example 1-3 obtains is respectively applied in galvanized steel plain sheet (purchased from Pangang Group Panzhihua Steel Vanadium Co., Ltd., model DX54D, containing zinc 95 weight % in zinc coat) surface, hot air drying 2 seconds at 90-110 DEG C, respectively obtain the galvanized steel plain sheet after process. Wherein, coating amount makes the thickness of the coating on the galvanized steel plain sheet after processing be 0.8 micron. The thickness of coating is to use XRF(fluorescence spectrophotometer) measuring instrument measure numerical value. Wherein, this prepares the chromium-free passivation liquid used in embodiment is all stored the chromium-free passivation liquid of 1 day after having prepared (namely obtaining uniform liquid E).
Preparation embodiment 2-4
Galvanized steel plain sheet after processing according to the method preparation of preparation embodiment 1, the difference is that, the chromium-free passivation liquid of use is all stored the chromium-free passivation liquid of 60,120 and 180 days after having prepared (namely obtaining uniform liquid E).
Testing example 1
By the requirement of regulation in GB/T101251997, carry out neutral salt spray test, measure the corrosion resisting property of the galvanized steel plain sheet after the process of preparation embodiment 1-4 respectively. It is qualified to be considered as by " salt spray test 120h, corrosion area < 3% ".
On M-2000 ring block type friction and wear tester, measure the coefficient of kinetic friction of the coating of the galvanized steel plain sheet after the process that preparation embodiment 1 obtains according to its description.
Test result as above is as shown in table 1. Natural law in bracket represents the storage time of chromium-free passivation liquid.
Table 1
Data according to table 1 are visible, and the corrosion resistance of the protecting film that chromium-free passivation liquid provided by the invention is formed is very excellent, and the storage endurance of chromium-free passivation liquid provided by the invention is also very excellent. And, data according to table 1 are visible, at the described water-soluble silicate preferably with respect to 1 weight portion, the content of described accelerator is 0.5-0.7 weight portion, and the consumption of described silane coupler is 1.4-1.8 weight portion, and the consumption of described cilicon oxide filler is 0.6-0.85 weight portion, in solid, the consumption of described water-soluble film-forming resin is 2.1-2.7 weight portion, when the consumption of water is 25-40 weight portion, it is possible to improve the corrosion resistance of the protecting film that described chromium-free passivation liquid is formed further.And, data according to table 1 are visible, when preferred described water-soluble silicon the third film-forming resin is Silomer8861 emulsion, or preferred described raw mixture possibly together with lubricating auxiliary agent when, it is possible to improve further the lubricity of the protecting film that described chromium-free passivation liquid is formed.
The preferred embodiment of the present invention described in detail above; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. a preparation method for chromium-free passivation liquid, the method includes water, silane coupler, water-soluble silicate, accelerator, cilicon oxide filler and water-soluble film-forming resin successively mix homogeneously; Described silane coupler is CH2=C (CH3)COO(CH2)3Si(OCH3)3、CH2=C (CH3)COO(CH2)3Si(OC2H5)3、CH2=C (CH3)COO(CH2)3SiCH3(OCH3)2And CH2=C (CH3)COO(CH2)3SiCH3(OC2H5)2In at least one; Described accelerator is thiourea and/or carbamide;
Wherein, described water-soluble silicate relative to 1 weight portion, the consumption of described accelerator is 0.2-1.8 weight portion, the consumption of described silane coupler is 0.5-4.5 weight portion, the consumption of described cilicon oxide filler is 0.25-2.2 weight portion, in solid, the consumption of described water-soluble film-forming resin is 0.8-6.8 weight portion, and the consumption of water is 10-100 weight portion.
2. preparation method according to claim 1, wherein, described water-soluble silicate relative to 1 weight portion, the consumption of described accelerator is 0.5-0.7 weight portion, the consumption of described silane coupler is 1.4-1.8 weight portion, and the consumption of described cilicon oxide filler is 0.6-0.85 weight portion, in solid, the consumption of described water-soluble film-forming resin is 2.1-2.7 weight portion, and the consumption of water is 25-40 weight portion.
3. preparation method according to claim 1 and 2, wherein, described silane coupler is CH2=C (CH3)COO(CH2)3Si(OCH3)3。
4. preparation method according to claim 1 and 2, wherein, described cilicon oxide filler is nano-silica powder and/or nano silicon dioxide sol.
5. preparation method according to claim 1 and 2, wherein, described water-soluble film-forming resin is at least one in water-soluble polyester film-forming resin, water solublity phenylpropyl alcohol film-forming resin, soluble epoxide film-forming resin, soluble polyurethane film-forming resin, water-soluble silicon the third film-forming resin, water-soluble acrylic film-forming resin and water-soluble fluorine carbon film-forming resin.
6. preparation method according to claim 5, wherein, described water-soluble silicon the third film-forming resin is Silomer8861 emulsion.
7. preparation method according to claim 1 and 2, wherein, this preparation method also includes: mixed homogeneously with lubricating auxiliary agent by the material after water and silane coupler mix homogeneously, described lubricating auxiliary agent is one or more in the water-based emulsion of dimethicone, polyether-modified polysiloxanes, the water-based emulsion of Tissuemat E and the water-based emulsion of OPE, relative to the described water-soluble silicate of 1 weight portion, the consumption of described lubricating auxiliary agent is 0.2-1.8 weight portion.
8. the chromium-free passivation liquid that in claim 1-7, preparation method described in any one prepares.
9. the purposes in preparing metal material of the chromium-free passivation liquid described in claim 8.
10. a metal material, this metal material includes metal base and the coating being attached on this metal base, described metal base is at least one in galvanizing metal base, hot-dip aluminizing zinc metal base and hot-dip aluminizing zinc magnesium metal base material, it is characterized in that, described coating is the cured product of the chromium-free passivation liquid described in claim 8.
11. metal material according to claim 10, wherein, the thickness of described coating is 0.1-1 micron.
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CN105803435A (en) * | 2016-05-03 | 2016-07-27 | 太仓市武锋金属制品有限公司 | Chromate-free passivation process of environment-friendly steel flywheel |
CN106086392B (en) * | 2016-07-13 | 2017-10-31 | 湘潭大学 | A kind of passivator for being used to suppress oxidation of pyrite and the method that pyrite is handled based on passivator |
CN106480443B (en) * | 2016-12-02 | 2018-10-12 | 兰州理工大学 | A kind of processing method for enabling aluminum alloy to surface and obtaining golden yellow passivating film |
CN109136896A (en) * | 2017-06-19 | 2019-01-04 | 镇江瑞德新材料科技研发有限公司 | A kind of preparation method of chromium-free passivation liquid |
CN108004536A (en) * | 2017-11-22 | 2018-05-08 | 无锡伊佩克科技有限公司 | A kind of chrome-free tanning agent and preparation method thereof |
CN109763121B (en) * | 2019-03-15 | 2021-01-29 | 武汉迪赛环保新材料股份有限公司 | Water-based chromium-free passivator for hot-dip galvanized steel pipe and preparation method thereof |
CN109763086B (en) * | 2019-03-15 | 2021-02-09 | 武汉迪赛环保新材料股份有限公司 | Manufacturing method of environment-friendly hot-dip galvanized steel pipe |
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