CN103334098A - Zinc-coated steel plate - Google Patents
Zinc-coated steel plate Download PDFInfo
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- CN103334098A CN103334098A CN 201310236868 CN201310236868A CN103334098A CN 103334098 A CN103334098 A CN 103334098A CN 201310236868 CN201310236868 CN 201310236868 CN 201310236868 A CN201310236868 A CN 201310236868A CN 103334098 A CN103334098 A CN 103334098A
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Abstract
The invention discloses a zinc-coated steel plate, which belongs to the field of zinc-coated steel plates. The zinc-coated steel plate is obtained by coating surface treating agent on the surface of the zinc-coated steel plate, heating up and drying, and is provided with a surface treating coated film with adhesion amount of 50mg/m<2>-500mg/m<2> at each surface, wherein the surface treating agent comprises the following components: a water-soluble zirconium compound (A), tetraalkoxy silane (B), a compound (C) with an epoxy group, a chelating agent (D), a vanadic acid compound (E) and a metal compound (F) containing one or more metals in a group including Ti, Al and Zn; and a pH value of the surface treating agent is 8-10. The zinc-coated steel plate is adjusted to satisfy certain conditions, so that the zinc-coated steel plate, which has various performances including corrosion resistance and adaptation, and has excellent conductivity under severe condition that the steel plate contacts with a lining pad and the like at low-contact pressure while the corrosion resistance is not lowed, and the like, can be provided.
Description
Technical field
The invention provides a kind of zinc-based metal plated steel sheet, belong to the steel plate galvanized field.
Background technology
Hot-dip galvanizing sheet steel since its excellent corrosion resisting performance, good coating performance and clean outer present household electrical appliance, body of a motor car use widely with having obtained in the production such as plate.The requirement that hot dip is stopped steel plate coating is the strong adhesion of coating and substrate, does not come off during the punching press distortion, in addition good welding property, corrosion resistance nature and phosphorus characteristic will be arranged, with the erosion resistance after guaranteeing paint film adhesion and painting.Yet there is the efflorescence of coating in hot-dip galvanizing sheet steel and problem such as peels off in the punch process process of practical application, and the destruction of having caused coating further has influence on the erosion resistance of coating and the property removed.
Be accompanied by the digitized remarkable development, CPU high speed of household appliances in recent years etc., bring the problem of hurt of electromagnetic wave to come into one's own gradually about giving its peripheral equipment or human body.Shielded cell comes shielding electromagnetic wave by the former material of electroconductibility that constitutes shielded cell with reflection of electromagnetic wave.In addition, the more high electromagnetic reflectivity of electroconductibility of the former material of formation shielded cell is just more high, and electromagnetic wave shielding performance improves.Therefore, guaranteeing that aspect the electromagnetic wave shielding performance of shielded cell, the metal sheet that importantly constitutes shielded cell has high electroconductibility.In addition, because shielded cell is to make by metal sheet being formed processing, so shielded cell has discontinuous (seam or junction surface), at this discontinuous electromagnetic leakage or intrusion takes place easily.Therefore, in shielded cell, prevent electromagnetic leakage or intrusion at discontinuous liner that inserts electroconductibility usually.
Summary of the invention
According to above deficiency of the prior art, problem to be solved by this invention is: the zinc-based metal plated steel sheet that a kind of strong adhesion, advantages of good shielding performance are provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of zinc-based metal plated steel sheet, it is characterized in that, by coating surface treatment agent on the zinc-based metal plated steel sheet surface and carry out heat drying and obtain, and having each surperficial adhesion amount is the surface treatment capsule of 50～500mg/m2, wherein, described surface treatment agent, contain: water-soluble zirconium compound (A), tetraalkoxysilane (B), compound (C) with epoxy group(ing), sequestrant (D), vanadic acid compound (E) and containing by Ti, the metallic compound (F) of the metal more than at least a kind in the group that Al and Zn form, pH is 8～10, and be adjusted into the condition that satisfies following (I)～(V)
(I) mass ratio (A/B) of the Zr reduced mass of water-soluble zirconium compound (A) and tetraalkoxysilane (B) is 1.0～6.0;
(II) tetraalkoxysilane (B) is 0.1～1.6 with the mass ratio (B/C) with compound (C) of epoxy group(ing);
(III) tetraalkoxysilane (B) is 0.3～2.0 with the mass ratio (B/D) of sequestrant (D);
(IV) mass ratio (E/D) of the V reduced mass of vanadic acid compound (E) and sequestrant (D) is 0.03～1.0;
(V) mass ratio (F/D) of the total reduced mass of metal of metallic compound (F) and sequestrant (D) is 0.05～0.8.
In the formula of above-mentioned expression mass ratio, A represents water-soluble zirconium compound (A) Zr reduced mass, B represents the quality of tetraalkoxysilane (B), C represents to have the quality of the compound (C) of alkoxyl group, D represents the quality of sequestrant (D), E represents the V reduced mass of vanadic acid compound (E), and F represents the total reduced mass of metal of metallic compound (F).
Described surface treatment agent also contains lubricant (G), and to contain with respect to the total solids composition of described surface treatment agent be the described lubricant (G) of 1～10 mass percent.
Described surface treatment agent also contains non-ionic type Emulsion acrylic resin (H), and to contain with respect to the total solids composition of described surface treatment agent be the described non-ionic type Emulsion acrylic resin (H) of 0.5～45.0 mass percent.
Contain with respect to the total solids composition of described surface treatment agent is the described non-ionic type Emulsion acrylic resin (H) of 0.5～4.5 mass percent.
Compared with prior art, the beneficial effect that this zinc-based metal plated steel sheet has is: can provide have erosion resistance and each performance of adaptation, particularly under the condition that does not reduce erosion resistance, also good zinc-based metal plated steel sheet of conductivity under the severe condition that steel plate contacts with low contact pressure and liner etc.
Embodiment
Below the present invention will be further described:
Embodiment 1:
By coating surface treatment agent on the zinc-based metal plated steel sheet surface and carry out heat drying and obtain, and having each surperficial adhesion amount is the surface treatment capsule of 50～500mg/m2, wherein, described surface treatment agent, contain: water-soluble zirconium compound (A), tetraalkoxysilane (B), compound (C) with epoxy group(ing), sequestrant (D), vanadic acid compound (E) and containing by Ti, the metallic compound (F) of the metal more than at least a kind in the group that Al and Zn form, pH is 8～10, and be adjusted into the condition that satisfies following (I)～(V)
(I) mass ratio (A/B) of the Zr reduced mass of water-soluble zirconium compound (A) and tetraalkoxysilane (B) is 1.0～6.0;
(II) tetraalkoxysilane (B) is 0.1～1.6 with the mass ratio (B/C) with compound (C) of epoxy group(ing);
(III) tetraalkoxysilane (B) is 0.3～2.0 with the mass ratio (B/D) of sequestrant (D);
(IV) mass ratio (E/D) of the V reduced mass of vanadic acid compound (E) and sequestrant (D) is 0.03～1.0;
(V) mass ratio (F/D) of the total reduced mass of metal of metallic compound (F) and sequestrant (D) is 0.05～0.8.
In the formula of above-mentioned expression mass ratio, A represents water-soluble zirconium compound (A) Zr reduced mass, B represents the quality of tetraalkoxysilane (B), C represents to have the quality of the compound (C) of alkoxyl group, D represents the quality of sequestrant (D), E represents the V reduced mass of vanadic acid compound (E), and F represents the total reduced mass of metal of metallic compound (F).
Described surface treatment agent also contains lubricant (G), and to contain with respect to the total solids composition of described surface treatment agent be the described lubricant (G) of 1～10 mass percent.
Described surface treatment agent also contains non-ionic type Emulsion acrylic resin (H), and to contain with respect to the total solids composition of described surface treatment agent be the described non-ionic type Emulsion acrylic resin (H) of 0.5～45.0 mass percent.
Contain with respect to the total solids composition of described surface treatment agent is the described non-ionic type Emulsion acrylic resin (H) of 0.5～4.5 mass percent.
Hot-dip galvanizing sheet steel (GI) or with the alloyed hot-dip galvanized steel sheet after its alloying (GA) can also be enumerated pot galvanize Zn-5 mass percent Al alloy steel plate (GF), pot galvanize-55 mass percent aluminium alloy steel plate (GL), electrogalvanizing steel plate (EG), electro-galvanizing-Ni alloy steel plate (Zn-11 mass percent Ni) etc.
Use contains the surface treatment agent of water-soluble zirconium compound when the surface of zinc-based metal plated steel sheet formation surface treatment capsule, each performance of erosion resistance of the adaptation of the erosion resistance of this steel plate, the tunicle of formation and this steel plate behind the alkali degreasing is all good, can access as the thermotolerance of the characteristic of inorganic tunicle and the zinc-based metal plated steel sheet of excellent weldability.
The kind of the water-soluble zirconium compound that uses among the present invention (A) does not have particular restriction, for example can enumerate: zirconium nitrate, Zircosol ZN, zirconyl acetate, zirconyl sulfate, zirconium carbonate, ammonium zirconyl carbonate, zirconyl carbonate potassium, zirconyl carbonate sodium, fluorine zirconic acid etc., can use in them more than one.Wherein, from erosion resistance and the better aspect of conductivity of steel plate galvanized, preferred ammonium zirconyl carbonate and zirconyl carbonate sodium.
The surface treatment agent that uses among the present invention contains tetraalkoxysilane (B).When using the surface treatment agent that contains above-mentioned water-soluble zirconium and tetraalkoxysilane simultaneously to form surface treatment capsule on the surface of zinc-based metal plated steel sheet, each performance of erosion resistance of the adaptation of the erosion resistance of this steel plate, the tunicle of formation and this steel plate behind the alkali degreasing is all good, can access as the thermotolerance of the characteristic of inorganic tunicle and the zinc-based metal plated steel sheet of excellent weldability.The reason that obtains these good characteristics is still indeterminate, but infer be because and during with tetraalkoxysilane (B) and above-mentioned water-soluble zirconium (A), water-soluble zirconium (A) and tetraalkoxysilane (B) formation has the cause of three-dimensional cross-linked tunicle.
The kind of the tetraalkoxysilane that uses among the present invention (B), then there is not particular restriction as long as have four alkoxyl groups in the molecule, can enumerate tetramethoxy-silicane, tetraethoxysilane, tetrapropoxysilane and butoxy silane etc., can use in them more than a kind.Do not have particular restriction as alkoxyl group, can enumerate carbonatoms and be 1～4 alkoxyl group, preferred carbonatoms 1～3 is more preferably carbonatoms 1～2.That is, from the better viewpoint of the erosion resistance of zinc-based metal plated steel sheet, preferred tetraethoxysilane and tetramethoxy-silicane.
Claims (4)
1. zinc-based metal plated steel sheet, it is characterized in that, by coating surface treatment agent on the zinc-based metal plated steel sheet surface and carry out heat drying and obtain, and having each surperficial adhesion amount is the surface treatment capsule of 50～500mg/m2, wherein, described surface treatment agent, contain: water-soluble zirconium compound (A), tetraalkoxysilane (B), compound (C) with epoxy group(ing), sequestrant (D), vanadic acid compound (E) and containing by Ti, the metallic compound (F) of the metal more than at least a kind in the group that Al and Zn form, pH is 8～10, and be adjusted into the condition that satisfies following (I)～(V)
(I) mass ratio (A/B) of the Zr reduced mass of water-soluble zirconium compound (A) and tetraalkoxysilane (B) is 1.0～6.0;
(II) tetraalkoxysilane (B) is 0.1～1.6 with the mass ratio (B/C) with compound (C) of epoxy group(ing);
(III) tetraalkoxysilane (B) is 0.3～2.0 with the mass ratio (B/D) of sequestrant (D);
(IV) mass ratio (E/D) of the V reduced mass of vanadic acid compound (E) and sequestrant (D) is 0.03～1.0;
(V) mass ratio (F/D) of the total reduced mass of metal of metallic compound (F) and sequestrant (D) is 0.05～0.8.
2. zinc-based metal plated steel sheet as claimed in claim 1, it is characterized in that: described surface treatment agent also contains lubricant (G), and to contain with respect to the total solids composition of described surface treatment agent be the described lubricant (G) of 1～10 mass percent.
3. zinc-based metal plated steel sheet as claimed in claim 1 or 2, it is characterized in that: described surface treatment agent also contains non-ionic type Emulsion acrylic resin (H), and to contain with respect to the total solids composition of described surface treatment agent be the described non-ionic type Emulsion acrylic resin (H) of 0.5～45.0 mass percent.
4. zinc-based metal plated steel sheet as claimed in claim 3, it is characterized in that: containing with respect to the total solids composition of described surface treatment agent is the described non-ionic type Emulsion acrylic resin (H) of 0.5～4.5 mass percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310236868 CN103334098A (en) | 2013-06-14 | 2013-06-14 | Zinc-coated steel plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201310236868 CN103334098A (en) | 2013-06-14 | 2013-06-14 | Zinc-coated steel plate |
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| CN103334098A true CN103334098A (en) | 2013-10-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106637173A (en) * | 2017-01-13 | 2017-05-10 | 昆明理工大学 | Hot galvanized environment-friendly passivation solution and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106637173A (en) * | 2017-01-13 | 2017-05-10 | 昆明理工大学 | Hot galvanized environment-friendly passivation solution and preparation method thereof |
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Application publication date: 20131002 |